1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "ci/ciReplay.hpp"
28 #include "classfile/altHashing.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "interpreter/linkResolver.hpp"
35 #ifndef SERIALGC
36 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
37 #endif // SERIALGC
38 #include "memory/allocation.hpp"
39 #include "memory/allocation.inline.hpp"
40 #include "memory/gcLocker.inline.hpp"
41 #include "memory/oopFactory.hpp"
42 #include "memory/universe.inline.hpp"
43 #include "oops/instanceKlass.hpp"
44 #include "oops/instanceOop.hpp"
45 #include "oops/markOop.hpp"
46 #include "oops/method.hpp"
47 #include "oops/objArrayKlass.hpp"
48 #include "oops/objArrayOop.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "oops/symbol.hpp"
51 #include "oops/typeArrayKlass.hpp"
52 #include "oops/typeArrayOop.hpp"
53 #include "prims/jni.h"
54 #include "prims/jniCheck.hpp"
55 #include "prims/jniExport.hpp"
56 #include "prims/jniFastGetField.hpp"
57 #include "prims/jvm.h"
58 #include "prims/jvm_misc.hpp"
59 #include "prims/jvmtiExport.hpp"
60 #include "prims/jvmtiThreadState.hpp"
61 #include "runtime/compilationPolicy.hpp"
62 #include "runtime/fieldDescriptor.hpp"
63 #include "runtime/fprofiler.hpp"
64 #include "runtime/handles.inline.hpp"
65 #include "runtime/interfaceSupport.hpp"
66 #include "runtime/java.hpp"
67 #include "runtime/javaCalls.hpp"
68 #include "runtime/jfieldIDWorkaround.hpp"
69 #include "runtime/reflection.hpp"
70 #include "runtime/sharedRuntime.hpp"
71 #include "runtime/signature.hpp"
72 #include "runtime/thread.inline.hpp"
73 #include "runtime/vm_operations.hpp"
74 #include "services/runtimeService.hpp"
75 #include "trace/tracing.hpp"
76 #include "trace/traceEventTypes.hpp"
77 #include "utilities/defaultStream.hpp"
78 #include "utilities/dtrace.hpp"
79 #include "utilities/events.hpp"
80 #include "utilities/histogram.hpp"
81 #ifdef TARGET_OS_FAMILY_linux
82 # include "os_linux.inline.hpp"
83 #endif
84 #ifdef TARGET_OS_FAMILY_solaris
85 # include "os_solaris.inline.hpp"
86 #endif
87 #ifdef TARGET_OS_FAMILY_windows
88 # include "os_windows.inline.hpp"
89 #endif
90 #ifdef TARGET_OS_FAMILY_bsd
91 # include "os_bsd.inline.hpp"
92 #endif
93
94 static jint CurrentVersion = JNI_VERSION_1_6;
95
96
97 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
98 // '-return' probe regardless of the return path is taken out of the function.
99 // Methods that have multiple return paths use this to avoid having to
100 // instrument each return path. Methods that use CHECK or THROW must use this
101 // since those macros can cause an immedate uninstrumented return.
102 //
103 // In order to get the return value, a reference to the variable containing
104 // the return value must be passed to the contructor of the object, and
105 // the return value must be set before return (since the mark object has
106 // a reference to it).
107 //
108 // Example:
109 // DT_RETURN_MARK_DECL(SomeFunc, int);
110 // JNI_ENTRY(int, SomeFunc, ...)
111 // int return_value = 0;
112 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
113 // foo(CHECK_0)
114 // return_value = 5;
115 // return return_value;
116 // JNI_END
117 #ifndef USDT2
118 #define DT_RETURN_MARK_DECL(name, type) \
119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
120 DTRACE_ONLY( \
121 class DTraceReturnProbeMark_##name { \
122 public: \
123 const type& _ret_ref; \
124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
125 ~DTraceReturnProbeMark_##name() { \
126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
127 } \
128 } \
129 )
130 // Void functions are simpler since there's no return value
131 #define DT_VOID_RETURN_MARK_DECL(name) \
132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
133 DTRACE_ONLY( \
134 class DTraceReturnProbeMark_##name { \
135 public: \
136 ~DTraceReturnProbeMark_##name() { \
137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
138 } \
139 } \
140 )
141
142 #else /* USDT2 */
143
144 #define DT_RETURN_MARK_DECL(name, type, probe) \
145 DTRACE_ONLY( \
146 class DTraceReturnProbeMark_##name { \
147 public: \
148 const type& _ret_ref; \
149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
150 ~DTraceReturnProbeMark_##name() { \
151 probe; \
152 } \
153 } \
154 )
155 // Void functions are simpler since there's no return value
156 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
157 DTRACE_ONLY( \
158 class DTraceReturnProbeMark_##name { \
159 public: \
160 ~DTraceReturnProbeMark_##name() { \
161 probe; \
162 } \
163 } \
164 )
165 #endif /* USDT2 */
166
167 // Place these macros in the function to mark the return. Non-void
168 // functions need the type and address of the return value.
169 #define DT_RETURN_MARK(name, type, ref) \
170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
171 #define DT_VOID_RETURN_MARK(name) \
172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
173
174
175 // Use these to select distinct code for floating-point vs. non-floating point
176 // situations. Used from within common macros where we need slightly
177 // different behavior for Float/Double
178 #define FP_SELECT_Boolean(intcode, fpcode) intcode
179 #define FP_SELECT_Byte(intcode, fpcode) intcode
180 #define FP_SELECT_Char(intcode, fpcode) intcode
181 #define FP_SELECT_Short(intcode, fpcode) intcode
182 #define FP_SELECT_Object(intcode, fpcode) intcode
183 #define FP_SELECT_Int(intcode, fpcode) intcode
184 #define FP_SELECT_Long(intcode, fpcode) intcode
185 #define FP_SELECT_Float(intcode, fpcode) fpcode
186 #define FP_SELECT_Double(intcode, fpcode) fpcode
187 #define FP_SELECT(TypeName, intcode, fpcode) \
188 FP_SELECT_##TypeName(intcode, fpcode)
189
190 #define COMMA ,
191
192 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
193 // (dtrace doesn't do FP yet)
194 #ifndef USDT2
195 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
196 FP_SELECT(TypeName, \
197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
198 #else /* USDT2 */
199 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
200 FP_SELECT(TypeName, \
201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
202 #endif /* USDT2 */
203 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
204 FP_SELECT(TypeName, \
205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
206
207
208 // out-of-line helpers for class jfieldIDWorkaround:
209
210 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
212 uintptr_t as_uint = (uintptr_t) id;
213 intptr_t offset = raw_instance_offset(id);
214 if (is_checked_jfieldID(id)) {
215 if (!klass_hash_ok(k, id)) {
216 return false;
217 }
218 }
219 return InstanceKlass::cast(k)->contains_field_offset(offset);
220 } else {
221 JNIid* result = (JNIid*) id;
222 #ifdef ASSERT
223 return result != NULL && result->is_static_field_id();
224 #else
225 return result != NULL;
226 #endif
227 }
228 }
229
230
231 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
232 if (offset <= small_offset_mask) {
233 Klass* field_klass = k;
234 Klass* super_klass = field_klass->super();
235 // With compressed oops the most super class with nonstatic fields would
236 // be the owner of fields embedded in the header.
237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
239 field_klass = super_klass; // super contains the field also
240 super_klass = field_klass->super();
241 }
242 debug_only(No_Safepoint_Verifier nosafepoint;)
243 uintptr_t klass_hash = field_klass->identity_hash();
244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
245 } else {
246 #if 0
247 #ifndef PRODUCT
248 {
249 ResourceMark rm;
250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
251 }
252 #endif
253 #endif
254 return 0;
255 }
256 }
257
258 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
259 uintptr_t as_uint = (uintptr_t) id;
260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
261 do {
262 debug_only(No_Safepoint_Verifier nosafepoint;)
263 // Could use a non-blocking query for identity_hash here...
264 if ((k->identity_hash() & klass_mask) == klass_hash)
265 return true;
266 k = k->super();
267 } while (k != NULL);
268 return false;
269 }
270
271 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
273 uintptr_t as_uint = (uintptr_t) id;
274 intptr_t offset = raw_instance_offset(id);
275 if (VerifyJNIFields) {
276 if (is_checked_jfieldID(id)) {
277 guarantee(klass_hash_ok(k, id),
278 "Bug in native code: jfieldID class must match object");
279 } else {
280 #if 0
281 #ifndef PRODUCT
282 if (Verbose) {
283 ResourceMark rm;
284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
285 }
286 #endif
287 #endif
288 }
289 }
290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
291 "Bug in native code: jfieldID offset must address interior of object");
292 }
293
294 // Pick a reasonable higher bound for local capacity requested
295 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
296 // high because a test (or very unusual application) may try to allocate
297 // that many handles and run out of swap space. An implementation is
298 // permitted to allocate more handles than the ensured capacity, so this
299 // value is set high enough to prevent compatibility problems.
300 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
301
302
303 // Wrapper to trace JNI functions
304
305 #ifdef ASSERT
306 Histogram* JNIHistogram;
307 static volatile jint JNIHistogram_lock = 0;
308
309 class JNITraceWrapper : public StackObj {
310 public:
311 JNITraceWrapper(const char* format, ...) {
312 if (TraceJNICalls) {
313 va_list ap;
314 va_start(ap, format);
315 tty->print("JNI ");
316 tty->vprint_cr(format, ap);
317 va_end(ap);
318 }
319 }
320 };
321
322 class JNIHistogramElement : public HistogramElement {
323 public:
324 JNIHistogramElement(const char* name);
325 };
326
327 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
328 _name = elementName;
329 uintx count = 0;
330
331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
333 count +=1;
334 if ( (WarnOnStalledSpinLock > 0)
335 && (count % WarnOnStalledSpinLock == 0)) {
336 warning("JNIHistogram_lock seems to be stalled");
337 }
338 }
339 }
340
341
342 if(JNIHistogram == NULL)
343 JNIHistogram = new Histogram("JNI Call Counts",100);
344
345 JNIHistogram->add_element(this);
346 Atomic::dec(&JNIHistogram_lock);
347 }
348
349 #define JNICountWrapper(arg) \
350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
352 if (e != NULL) e->increment_count()
353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
354 #else
355 #define JNIWrapper(arg)
356 #endif
357
358
359 // Implementation of JNI entries
360
361 #ifndef USDT2
362 DT_RETURN_MARK_DECL(DefineClass, jclass);
363 #else /* USDT2 */
364 DT_RETURN_MARK_DECL(DefineClass, jclass
365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
366 #endif /* USDT2 */
367
368 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
369 const jbyte *buf, jsize bufLen))
370 JNIWrapper("DefineClass");
371
372 #ifndef USDT2
373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
374 env, name, loaderRef, buf, bufLen);
375 #else /* USDT2 */
376 HOTSPOT_JNI_DEFINECLASS_ENTRY(
377 env, (char*) name, loaderRef, (char*) buf, bufLen);
378 #endif /* USDT2 */
379 jclass cls = NULL;
380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
381
382 TempNewSymbol class_name = NULL;
383 // Since exceptions can be thrown, class initialization can take place
384 // if name is NULL no check for class name in .class stream has to be made.
385 if (name != NULL) {
386 const int str_len = (int)strlen(name);
387 if (str_len > Symbol::max_length()) {
388 // It's impossible to create this class; the name cannot fit
389 // into the constant pool.
390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
391 }
392 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
393 }
394 ResourceMark rm(THREAD);
395 ClassFileStream st((u1*) buf, bufLen, NULL);
396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
397
398 if (UsePerfData && !class_loader.is_null()) {
399 // check whether the current caller thread holds the lock or not.
400 // If not, increment the corresponding counter
401 if (ObjectSynchronizer::
402 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
403 ObjectSynchronizer::owner_self) {
404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
405 }
406 }
407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
408 Handle(), &st, true,
409 CHECK_NULL);
410
411 if (TraceClassResolution && k != NULL) {
412 trace_class_resolution(k);
413 }
414
415 cls = (jclass)JNIHandles::make_local(
416 env, k->java_mirror());
417 return cls;
418 JNI_END
419
420
421
422 static bool first_time_FindClass = true;
423
424 #ifndef USDT2
425 DT_RETURN_MARK_DECL(FindClass, jclass);
426 #else /* USDT2 */
427 DT_RETURN_MARK_DECL(FindClass, jclass
428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
429 #endif /* USDT2 */
430
431 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
432 JNIWrapper("FindClass");
433 #ifndef USDT2
434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
435 #else /* USDT2 */
436 HOTSPOT_JNI_FINDCLASS_ENTRY(
437 env, (char *)name);
438 #endif /* USDT2 */
439
440 jclass result = NULL;
441 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
442
443 // Remember if we are the first invocation of jni_FindClass
444 bool first_time = first_time_FindClass;
445 first_time_FindClass = false;
446
447 // Sanity check the name: it cannot be null or larger than the maximum size
448 // name we can fit in the constant pool.
449 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
450 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
451 }
452
453 //%note jni_3
454 Handle loader;
455 Handle protection_domain;
456 // Find calling class
457 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
458 if (k.not_null()) {
459 loader = Handle(THREAD, k->class_loader());
460 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
461 // in the correct class context.
462 if (loader.is_null() &&
463 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
464 JavaValue result(T_OBJECT);
465 JavaCalls::call_static(&result, k,
466 vmSymbols::getFromClass_name(),
467 vmSymbols::void_class_signature(),
468 thread);
469 if (HAS_PENDING_EXCEPTION) {
470 Handle ex(thread, thread->pending_exception());
471 CLEAR_PENDING_EXCEPTION;
472 THROW_HANDLE_0(ex);
473 }
474 oop mirror = (oop) result.get_jobject();
475 loader = Handle(THREAD,
476 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
477 protection_domain = Handle(THREAD,
478 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
479 }
480 } else {
481 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
482 loader = Handle(THREAD, SystemDictionary::java_system_loader());
483 }
484
485 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
486 result = find_class_from_class_loader(env, sym, true, loader,
487 protection_domain, true, thread);
488
489 if (TraceClassResolution && result != NULL) {
490 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
491 }
492
493 // If we were the first invocation of jni_FindClass, we enable compilation again
494 // rather than just allowing invocation counter to overflow and decay.
495 // Controlled by flag DelayCompilationDuringStartup.
496 if (first_time && !CompileTheWorld)
497 CompilationPolicy::completed_vm_startup();
498
499 return result;
500 JNI_END
501
502 #ifndef USDT2
503 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
504 #else /* USDT2 */
505 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
506 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
507 #endif /* USDT2 */
508
509 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
510 JNIWrapper("FromReflectedMethod");
511 #ifndef USDT2
512 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
513 #else /* USDT2 */
514 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
515 env, method);
516 #endif /* USDT2 */
517 jmethodID ret = NULL;
518 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
519
520 // method is a handle to a java.lang.reflect.Method object
521 oop reflected = JNIHandles::resolve_non_null(method);
522 oop mirror = NULL;
523 int slot = 0;
524
525 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
526 mirror = java_lang_reflect_Constructor::clazz(reflected);
527 slot = java_lang_reflect_Constructor::slot(reflected);
528 } else {
529 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
530 mirror = java_lang_reflect_Method::clazz(reflected);
531 slot = java_lang_reflect_Method::slot(reflected);
532 }
533 Klass* k = java_lang_Class::as_Klass(mirror);
534
535 KlassHandle k1(THREAD, k);
536 // Make sure class is initialized before handing id's out to methods
537 k1()->initialize(CHECK_NULL);
538 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
539 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
540 return ret;
541 JNI_END
542
543 #ifndef USDT2
544 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
545 #else /* USDT2 */
546 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
547 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
548 #endif /* USDT2 */
549
550 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
551 JNIWrapper("FromReflectedField");
552 #ifndef USDT2
553 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
554 #else /* USDT2 */
555 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
556 env, field);
557 #endif /* USDT2 */
558 jfieldID ret = NULL;
559 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
560
561 // field is a handle to a java.lang.reflect.Field object
562 oop reflected = JNIHandles::resolve_non_null(field);
563 oop mirror = java_lang_reflect_Field::clazz(reflected);
564 Klass* k = java_lang_Class::as_Klass(mirror);
565 int slot = java_lang_reflect_Field::slot(reflected);
566 int modifiers = java_lang_reflect_Field::modifiers(reflected);
567
568 KlassHandle k1(THREAD, k);
569 // Make sure class is initialized before handing id's out to fields
570 k1()->initialize(CHECK_NULL);
571
572 // First check if this is a static field
573 if (modifiers & JVM_ACC_STATIC) {
574 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
575 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
576 assert(id != NULL, "corrupt Field object");
577 debug_only(id->set_is_static_field_id();)
578 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
579 ret = jfieldIDWorkaround::to_static_jfieldID(id);
580 return ret;
581 }
582
583 // The slot is the index of the field description in the field-array
584 // The jfieldID is the offset of the field within the object
585 // It may also have hash bits for k, if VerifyJNIFields is turned on.
586 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
587 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
588 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
589 return ret;
590 JNI_END
591
592 #ifndef USDT2
593 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
594 #else /* USDT2 */
595 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
596 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
597 #endif /* USDT2 */
598
599 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
600 JNIWrapper("ToReflectedMethod");
601 #ifndef USDT2
602 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
603 #else /* USDT2 */
604 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
605 env, cls, (uintptr_t) method_id, isStatic);
606 #endif /* USDT2 */
607 jobject ret = NULL;
608 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
609
610 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
611 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
612 oop reflection_method;
613 if (m->is_initializer()) {
614 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
615 } else {
616 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
617 }
618 ret = JNIHandles::make_local(env, reflection_method);
619 return ret;
620 JNI_END
621
622 #ifndef USDT2
623 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
624 #else /* USDT2 */
625 DT_RETURN_MARK_DECL(GetSuperclass, jclass
626 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
627 #endif /* USDT2 */
628
629 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
630 JNIWrapper("GetSuperclass");
631 #ifndef USDT2
632 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
633 #else /* USDT2 */
634 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
635 env, sub);
636 #endif /* USDT2 */
637 jclass obj = NULL;
638 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
639
640 oop mirror = JNIHandles::resolve_non_null(sub);
641 // primitive classes return NULL
642 if (java_lang_Class::is_primitive(mirror)) return NULL;
643
644 // Rules of Class.getSuperClass as implemented by KLass::java_super:
645 // arrays return Object
646 // interfaces return NULL
647 // proper classes return Klass::super()
648 Klass* k = java_lang_Class::as_Klass(mirror);
649 if (k->is_interface()) return NULL;
650
651 // return mirror for superclass
652 Klass* super = k->java_super();
653 // super2 is the value computed by the compiler's getSuperClass intrinsic:
654 debug_only(Klass* super2 = ( k->oop_is_array()
655 ? SystemDictionary::Object_klass()
656 : k->super() ) );
657 assert(super == super2,
658 "java_super computation depends on interface, array, other super");
659 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
660 return obj;
661 JNI_END
662
663 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
664 JNIWrapper("IsSubclassOf");
665 #ifndef USDT2
666 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
667 #else /* USDT2 */
668 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
669 env, sub, super);
670 #endif /* USDT2 */
671 oop sub_mirror = JNIHandles::resolve_non_null(sub);
672 oop super_mirror = JNIHandles::resolve_non_null(super);
673 if (java_lang_Class::is_primitive(sub_mirror) ||
674 java_lang_Class::is_primitive(super_mirror)) {
675 jboolean ret = (sub_mirror == super_mirror);
676 #ifndef USDT2
677 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
678 #else /* USDT2 */
679 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
680 ret);
681 #endif /* USDT2 */
682 return ret;
683 }
684 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
685 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
686 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
687 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
688 JNI_TRUE : JNI_FALSE;
689 #ifndef USDT2
690 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
691 #else /* USDT2 */
692 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
693 ret);
694 #endif /* USDT2 */
695 return ret;
696 JNI_END
697
698 #ifndef USDT2
699 DT_RETURN_MARK_DECL(Throw, jint);
700 #else /* USDT2 */
701 DT_RETURN_MARK_DECL(Throw, jint
702 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
703 #endif /* USDT2 */
704
705 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
706 JNIWrapper("Throw");
707 #ifndef USDT2
708 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
709 #else /* USDT2 */
710 HOTSPOT_JNI_THROW_ENTRY(
711 env, obj);
712 #endif /* USDT2 */
713 jint ret = JNI_OK;
714 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
715
716 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
717 ShouldNotReachHere();
718 JNI_END
719
720 #ifndef USDT2
721 DT_RETURN_MARK_DECL(ThrowNew, jint);
722 #else /* USDT2 */
723 DT_RETURN_MARK_DECL(ThrowNew, jint
724 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
725 #endif /* USDT2 */
726
727 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
728 JNIWrapper("ThrowNew");
729 #ifndef USDT2
730 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
731 #else /* USDT2 */
732 HOTSPOT_JNI_THROWNEW_ENTRY(
733 env, clazz, (char *) message);
734 #endif /* USDT2 */
735 jint ret = JNI_OK;
736 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
737
738 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
739 Symbol* name = k->name();
740 Handle class_loader (THREAD, k->class_loader());
741 Handle protection_domain (THREAD, k->protection_domain());
742 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
743 ShouldNotReachHere();
744 JNI_END
745
746
747 // JNI functions only transform a pending async exception to a synchronous
748 // exception in ExceptionOccurred and ExceptionCheck calls, since
749 // delivering an async exception in other places won't change the native
750 // code's control flow and would be harmful when native code further calls
751 // JNI functions with a pending exception. Async exception is also checked
752 // during the call, so ExceptionOccurred/ExceptionCheck won't return
753 // false but deliver the async exception at the very end during
754 // state transition.
755
756 static void jni_check_async_exceptions(JavaThread *thread) {
757 assert(thread == Thread::current(), "must be itself");
758 thread->check_and_handle_async_exceptions();
759 }
760
761 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
762 JNIWrapper("ExceptionOccurred");
763 #ifndef USDT2
764 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
765 #else /* USDT2 */
766 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
767 env);
768 #endif /* USDT2 */
769 jni_check_async_exceptions(thread);
770 oop exception = thread->pending_exception();
771 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
772 #ifndef USDT2
773 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
774 #else /* USDT2 */
775 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
776 ret);
777 #endif /* USDT2 */
778 return ret;
779 JNI_END
780
781
782 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
783 JNIWrapper("ExceptionDescribe");
784 #ifndef USDT2
785 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
786 #else /* USDT2 */
787 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
788 env);
789 #endif /* USDT2 */
790 if (thread->has_pending_exception()) {
791 Handle ex(thread, thread->pending_exception());
792 thread->clear_pending_exception();
793 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
794 // Don't print anything if we are being killed.
795 } else {
796 jio_fprintf(defaultStream::error_stream(), "Exception ");
797 if (thread != NULL && thread->threadObj() != NULL) {
798 ResourceMark rm(THREAD);
799 jio_fprintf(defaultStream::error_stream(),
800 "in thread \"%s\" ", thread->get_thread_name());
801 }
802 if (ex->is_a(SystemDictionary::Throwable_klass())) {
803 JavaValue result(T_VOID);
804 JavaCalls::call_virtual(&result,
805 ex,
806 KlassHandle(THREAD,
807 SystemDictionary::Throwable_klass()),
808 vmSymbols::printStackTrace_name(),
809 vmSymbols::void_method_signature(),
810 THREAD);
811 // If an exception is thrown in the call it gets thrown away. Not much
812 // we can do with it. The native code that calls this, does not check
813 // for the exception - hence, it might still be in the thread when DestroyVM gets
814 // called, potentially causing a few asserts to trigger - since no pending exception
815 // is expected.
816 CLEAR_PENDING_EXCEPTION;
817 } else {
818 ResourceMark rm(THREAD);
819 jio_fprintf(defaultStream::error_stream(),
820 ". Uncaught exception of type %s.",
821 ex->klass()->external_name());
822 }
823 }
824 }
825 #ifndef USDT2
826 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
827 #else /* USDT2 */
828 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
829 );
830 #endif /* USDT2 */
831 JNI_END
832
833
834 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
835 JNIWrapper("ExceptionClear");
836 #ifndef USDT2
837 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
838 #else /* USDT2 */
839 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
840 env);
841 #endif /* USDT2 */
842
843 // The jni code might be using this API to clear java thrown exception.
844 // So just mark jvmti thread exception state as exception caught.
845 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
846 if (state != NULL && state->is_exception_detected()) {
847 state->set_exception_caught();
848 }
849 thread->clear_pending_exception();
850 #ifndef USDT2
851 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
852 #else /* USDT2 */
853 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
854 );
855 #endif /* USDT2 */
856 JNI_END
857
858
859 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
860 JNIWrapper("FatalError");
861 #ifndef USDT2
862 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
863 #else /* USDT2 */
864 HOTSPOT_JNI_FATALERROR_ENTRY(
865 env, (char *) msg);
866 #endif /* USDT2 */
867 tty->print_cr("FATAL ERROR in native method: %s", msg);
868 thread->print_stack();
869 os::abort(); // Dump core and abort
870 JNI_END
871
872
873 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
874 JNIWrapper("PushLocalFrame");
875 #ifndef USDT2
876 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
877 #else /* USDT2 */
878 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
879 env, capacity);
880 #endif /* USDT2 */
881 //%note jni_11
882 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
883 #ifndef USDT2
884 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
885 #else /* USDT2 */
886 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
887 (uint32_t)JNI_ERR);
888 #endif /* USDT2 */
889 return JNI_ERR;
890 }
891 JNIHandleBlock* old_handles = thread->active_handles();
892 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
893 assert(new_handles != NULL, "should not be NULL");
894 new_handles->set_pop_frame_link(old_handles);
895 thread->set_active_handles(new_handles);
896 jint ret = JNI_OK;
897 #ifndef USDT2
898 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
899 #else /* USDT2 */
900 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
901 ret);
902 #endif /* USDT2 */
903 return ret;
904 JNI_END
905
906
907 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
908 JNIWrapper("PopLocalFrame");
909 #ifndef USDT2
910 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
911 #else /* USDT2 */
912 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
913 env, result);
914 #endif /* USDT2 */
915 //%note jni_11
916 Handle result_handle(thread, JNIHandles::resolve(result));
917 JNIHandleBlock* old_handles = thread->active_handles();
918 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
919 if (new_handles != NULL) {
920 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
921 // This way code will still work if PopLocalFrame is called without a corresponding
922 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
923 // the release_block call will release the blocks.
924 thread->set_active_handles(new_handles);
925 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
926 JNIHandleBlock::release_block(old_handles, thread); // may block
927 result = JNIHandles::make_local(thread, result_handle());
928 }
929 #ifndef USDT2
930 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
931 #else /* USDT2 */
932 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
933 result);
934 #endif /* USDT2 */
935 return result;
936 JNI_END
937
938
939 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
940 JNIWrapper("NewGlobalRef");
941 #ifndef USDT2
942 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
943 #else /* USDT2 */
944 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
945 env, ref);
946 #endif /* USDT2 */
947 Handle ref_handle(thread, JNIHandles::resolve(ref));
948 jobject ret = JNIHandles::make_global(ref_handle);
949 #ifndef USDT2
950 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
951 #else /* USDT2 */
952 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
953 ret);
954 #endif /* USDT2 */
955 return ret;
956 JNI_END
957
958 // Must be JNI_ENTRY (with HandleMark)
959 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
960 JNIWrapper("DeleteGlobalRef");
961 #ifndef USDT2
962 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
963 #else /* USDT2 */
964 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
965 env, ref);
966 #endif /* USDT2 */
967 JNIHandles::destroy_global(ref);
968 #ifndef USDT2
969 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
970 #else /* USDT2 */
971 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
972 );
973 #endif /* USDT2 */
974 JNI_END
975
976 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
977 JNIWrapper("DeleteLocalRef");
978 #ifndef USDT2
979 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
980 #else /* USDT2 */
981 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
982 env, obj);
983 #endif /* USDT2 */
984 JNIHandles::destroy_local(obj);
985 #ifndef USDT2
986 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
987 #else /* USDT2 */
988 HOTSPOT_JNI_DELETELOCALREF_RETURN(
989 );
990 #endif /* USDT2 */
991 JNI_END
992
993 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
994 JNIWrapper("IsSameObject");
995 #ifndef USDT2
996 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
997 #else /* USDT2 */
998 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
999 env, r1, r2);
1000 #endif /* USDT2 */
1001 oop a = JNIHandles::resolve(r1);
1002 oop b = JNIHandles::resolve(r2);
1003 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1004 #ifndef USDT2
1005 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1006 #else /* USDT2 */
1007 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1008 ret);
1009 #endif /* USDT2 */
1010 return ret;
1011 JNI_END
1012
1013
1014 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1015 JNIWrapper("NewLocalRef");
1016 #ifndef USDT2
1017 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1018 #else /* USDT2 */
1019 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1020 env, ref);
1021 #endif /* USDT2 */
1022 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1023 #ifndef USDT2
1024 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1025 #else /* USDT2 */
1026 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1027 ret);
1028 #endif /* USDT2 */
1029 return ret;
1030 JNI_END
1031
1032 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1033 JNIWrapper("EnsureLocalCapacity");
1034 #ifndef USDT2
1035 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1036 #else /* USDT2 */
1037 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1038 env, capacity);
1039 #endif /* USDT2 */
1040 jint ret;
1041 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1042 ret = JNI_OK;
1043 } else {
1044 ret = JNI_ERR;
1045 }
1046 #ifndef USDT2
1047 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1048 #else /* USDT2 */
1049 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1050 ret);
1051 #endif /* USDT2 */
1052 return ret;
1053 JNI_END
1054
1055 // Return the Handle Type
1056 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1057 JNIWrapper("GetObjectRefType");
1058 #ifndef USDT2
1059 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1060 #else /* USDT2 */
1061 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1062 env, obj);
1063 #endif /* USDT2 */
1064 jobjectRefType ret;
1065 if (JNIHandles::is_local_handle(thread, obj) ||
1066 JNIHandles::is_frame_handle(thread, obj))
1067 ret = JNILocalRefType;
1068 else if (JNIHandles::is_global_handle(obj))
1069 ret = JNIGlobalRefType;
1070 else if (JNIHandles::is_weak_global_handle(obj))
1071 ret = JNIWeakGlobalRefType;
1072 else
1073 ret = JNIInvalidRefType;
1074 #ifndef USDT2
1075 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1076 #else /* USDT2 */
1077 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1078 (void *) ret);
1079 #endif /* USDT2 */
1080 return ret;
1081 JNI_END
1082
1083
1084 class JNI_ArgumentPusher : public SignatureIterator {
1085 protected:
1086 JavaCallArguments* _arguments;
1087
1088 virtual void get_bool () = 0;
1089 virtual void get_char () = 0;
1090 virtual void get_short () = 0;
1091 virtual void get_byte () = 0;
1092 virtual void get_int () = 0;
1093 virtual void get_long () = 0;
1094 virtual void get_float () = 0;
1095 virtual void get_double () = 0;
1096 virtual void get_object () = 0;
1097
1098 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1099 this->_return_type = T_ILLEGAL;
1100 _arguments = NULL;
1101 }
1102
1103 public:
1104 virtual void iterate( uint64_t fingerprint ) = 0;
1105
1106 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1107
1108 inline void do_bool() { if (!is_return_type()) get_bool(); }
1109 inline void do_char() { if (!is_return_type()) get_char(); }
1110 inline void do_short() { if (!is_return_type()) get_short(); }
1111 inline void do_byte() { if (!is_return_type()) get_byte(); }
1112 inline void do_int() { if (!is_return_type()) get_int(); }
1113 inline void do_long() { if (!is_return_type()) get_long(); }
1114 inline void do_float() { if (!is_return_type()) get_float(); }
1115 inline void do_double() { if (!is_return_type()) get_double(); }
1116 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1117 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1118 inline void do_void() { }
1119
1120 JavaCallArguments* arguments() { return _arguments; }
1121 void push_receiver(Handle h) { _arguments->push_oop(h); }
1122 };
1123
1124
1125 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1126 protected:
1127 va_list _ap;
1128
1129 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1130 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1131 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1132 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1133 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1134
1135 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1136
1137 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1138 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1139 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1140 inline void get_object() { jobject l = va_arg(_ap, jobject);
1141 _arguments->push_oop(Handle((oop *)l, false)); }
1142
1143 inline void set_ap(va_list rap) {
1144 #ifdef va_copy
1145 va_copy(_ap, rap);
1146 #elif defined (__va_copy)
1147 __va_copy(_ap, rap);
1148 #else
1149 _ap = rap;
1150 #endif
1151 }
1152
1153 public:
1154 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1155 : JNI_ArgumentPusher(signature) {
1156 set_ap(rap);
1157 }
1158 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1159 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1160 set_ap(rap);
1161 }
1162
1163 // Optimized path if we have the bitvector form of signature
1164 void iterate( uint64_t fingerprint ) {
1165 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1166 else {
1167 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1168 result_feature_mask);
1169
1170 assert(fingerprint, "Fingerprint should not be 0");
1171 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1172 while ( 1 ) {
1173 switch ( fingerprint & parameter_feature_mask ) {
1174 case bool_parm:
1175 case char_parm:
1176 case short_parm:
1177 case byte_parm:
1178 case int_parm:
1179 get_int();
1180 break;
1181 case obj_parm:
1182 get_object();
1183 break;
1184 case long_parm:
1185 get_long();
1186 break;
1187 case float_parm:
1188 get_float();
1189 break;
1190 case double_parm:
1191 get_double();
1192 break;
1193 case done_parm:
1194 return;
1195 break;
1196 default:
1197 ShouldNotReachHere();
1198 break;
1199 }
1200 fingerprint >>= parameter_feature_size;
1201 }
1202 }
1203 }
1204 };
1205
1206
1207 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1208 protected:
1209 const jvalue *_ap;
1210
1211 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1212 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1213 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1214 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1215 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1216
1217 inline void get_long() { _arguments->push_long((_ap++)->j); }
1218 inline void get_float() { _arguments->push_float((_ap++)->f); }
1219 inline void get_double() { _arguments->push_double((_ap++)->d);}
1220 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1221
1222 inline void set_ap(const jvalue *rap) { _ap = rap; }
1223
1224 public:
1225 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1226 : JNI_ArgumentPusher(signature) {
1227 set_ap(rap);
1228 }
1229 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1230 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1231 set_ap(rap);
1232 }
1233
1234 // Optimized path if we have the bitvector form of signature
1235 void iterate( uint64_t fingerprint ) {
1236 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1237 else {
1238 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1239 result_feature_mask);
1240 assert(fingerprint, "Fingerprint should not be 0");
1241 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1242 while ( 1 ) {
1243 switch ( fingerprint & parameter_feature_mask ) {
1244 case bool_parm:
1245 get_bool();
1246 break;
1247 case char_parm:
1248 get_char();
1249 break;
1250 case short_parm:
1251 get_short();
1252 break;
1253 case byte_parm:
1254 get_byte();
1255 break;
1256 case int_parm:
1257 get_int();
1258 break;
1259 case obj_parm:
1260 get_object();
1261 break;
1262 case long_parm:
1263 get_long();
1264 break;
1265 case float_parm:
1266 get_float();
1267 break;
1268 case double_parm:
1269 get_double();
1270 break;
1271 case done_parm:
1272 return;
1273 break;
1274 default:
1275 ShouldNotReachHere();
1276 break;
1277 }
1278 fingerprint >>= parameter_feature_size;
1279 }
1280 }
1281 }
1282 };
1283
1284
1285 enum JNICallType {
1286 JNI_STATIC,
1287 JNI_VIRTUAL,
1288 JNI_NONVIRTUAL
1289 };
1290
1291 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
1292 assert(!method.is_null() , "method should not be null");
1293
1294 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1295 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1296 KlassHandle spec_klass (THREAD, method->method_holder());
1297 Symbol* name = method->name();
1298 Symbol* signature = method->signature();
1299 CallInfo info;
1300 LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1301 return info.selected_method();
1302 }
1303
1304 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
1305 assert(!method.is_null() , "method should not be null");
1306
1307 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1308 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1309 KlassHandle spec_klass (THREAD, method->method_holder());
1310 Symbol* name = method->name();
1311 Symbol* signature = method->signature();
1312 CallInfo info;
1313 LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1314 return info.selected_method();
1315 }
1316
1317
1318
1319 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1320 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1321
1322 // Create object to hold arguments for the JavaCall, and associate it with
1323 // the jni parser
1324 ResourceMark rm(THREAD);
1325 int number_of_parameters = method->size_of_parameters();
1326 JavaCallArguments java_args(number_of_parameters);
1327 args->set_java_argument_object(&java_args);
1328
1329 assert(method->is_static(), "method should be static");
1330
1331 // Fill out JavaCallArguments object
1332 args->iterate( Fingerprinter(method).fingerprint() );
1333 // Initialize result type
1334 result->set_type(args->get_ret_type());
1335
1336 // Invoke the method. Result is returned as oop.
1337 JavaCalls::call(result, method, &java_args, CHECK);
1338
1339 // Convert result
1340 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1341 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1342 }
1343 }
1344
1345
1346 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1347 oop recv = JNIHandles::resolve(receiver);
1348 if (recv == NULL) {
1349 THROW(vmSymbols::java_lang_NullPointerException());
1350 }
1351 Handle h_recv(THREAD, recv);
1352
1353 int number_of_parameters;
1354 Method* selected_method;
1355 {
1356 Method* m = Method::resolve_jmethod_id(method_id);
1357 number_of_parameters = m->size_of_parameters();
1358 Klass* holder = m->method_holder();
1359 if (!(holder)->is_interface()) {
1360 // non-interface call -- for that little speed boost, don't handlize
1361 debug_only(No_Safepoint_Verifier nosafepoint;)
1362 if (call_type == JNI_VIRTUAL) {
1363 // jni_GetMethodID makes sure class is linked and initialized
1364 // so m should have a valid vtable index.
1365 int vtbl_index = m->vtable_index();
1366 if (vtbl_index != Method::nonvirtual_vtable_index) {
1367 Klass* k = h_recv->klass();
1368 // k might be an arrayKlassOop but all vtables start at
1369 // the same place. The cast is to avoid virtual call and assertion.
1370 InstanceKlass *ik = (InstanceKlass*)k;
1371 selected_method = ik->method_at_vtable(vtbl_index);
1372 } else {
1373 // final method
1374 selected_method = m;
1375 }
1376 } else {
1377 // JNI_NONVIRTUAL call
1378 selected_method = m;
1379 }
1380 } else {
1381 // interface call
1382 KlassHandle h_holder(THREAD, holder);
1383
1384 int itbl_index = m->cached_itable_index();
1385 if (itbl_index == -1) {
1386 itbl_index = klassItable::compute_itable_index(m);
1387 m->set_cached_itable_index(itbl_index);
1388 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1389 }
1390 Klass* k = h_recv->klass();
1391 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1392 }
1393 }
1394
1395 methodHandle method(THREAD, selected_method);
1396
1397 // Create object to hold arguments for the JavaCall, and associate it with
1398 // the jni parser
1399 ResourceMark rm(THREAD);
1400 JavaCallArguments java_args(number_of_parameters);
1401 args->set_java_argument_object(&java_args);
1402
1403 // handle arguments
1404 assert(!method->is_static(), "method should not be static");
1405 args->push_receiver(h_recv); // Push jobject handle
1406
1407 // Fill out JavaCallArguments object
1408 args->iterate( Fingerprinter(method).fingerprint() );
1409 // Initialize result type
1410 result->set_type(args->get_ret_type());
1411
1412 // Invoke the method. Result is returned as oop.
1413 JavaCalls::call(result, method, &java_args, CHECK);
1414
1415 // Convert result
1416 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1417 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1418 }
1419 }
1420
1421
1422 static instanceOop alloc_object(jclass clazz, TRAPS) {
1423 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1424 k()->check_valid_for_instantiation(false, CHECK_NULL);
1425 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1426 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1427 return ih;
1428 }
1429
1430 #ifndef USDT2
1431 DT_RETURN_MARK_DECL(AllocObject, jobject);
1432 #else /* USDT2 */
1433 DT_RETURN_MARK_DECL(AllocObject, jobject
1434 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1435 #endif /* USDT2 */
1436
1437 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1438 JNIWrapper("AllocObject");
1439
1440 #ifndef USDT2
1441 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1442 #else /* USDT2 */
1443 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1444 env, clazz);
1445 #endif /* USDT2 */
1446 jobject ret = NULL;
1447 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1448
1449 instanceOop i = alloc_object(clazz, CHECK_NULL);
1450 ret = JNIHandles::make_local(env, i);
1451 return ret;
1452 JNI_END
1453
1454 #ifndef USDT2
1455 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1456 #else /* USDT2 */
1457 DT_RETURN_MARK_DECL(NewObjectA, jobject
1458 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1459 #endif /* USDT2 */
1460
1461 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1462 JNIWrapper("NewObjectA");
1463 #ifndef USDT2
1464 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1465 #else /* USDT2 */
1466 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1467 env, clazz, (uintptr_t) methodID);
1468 #endif /* USDT2 */
1469 jobject obj = NULL;
1470 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1471
1472 instanceOop i = alloc_object(clazz, CHECK_NULL);
1473 obj = JNIHandles::make_local(env, i);
1474 JavaValue jvalue(T_VOID);
1475 JNI_ArgumentPusherArray ap(methodID, args);
1476 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1477 return obj;
1478 JNI_END
1479
1480 #ifndef USDT2
1481 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1482 #else /* USDT2 */
1483 DT_RETURN_MARK_DECL(NewObjectV, jobject
1484 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1485 #endif /* USDT2 */
1486
1487 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1488 JNIWrapper("NewObjectV");
1489 #ifndef USDT2
1490 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1491 #else /* USDT2 */
1492 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1493 env, clazz, (uintptr_t) methodID);
1494 #endif /* USDT2 */
1495 jobject obj = NULL;
1496 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1497
1498 instanceOop i = alloc_object(clazz, CHECK_NULL);
1499 obj = JNIHandles::make_local(env, i);
1500 JavaValue jvalue(T_VOID);
1501 JNI_ArgumentPusherVaArg ap(methodID, args);
1502 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1503 return obj;
1504 JNI_END
1505
1506 #ifndef USDT2
1507 DT_RETURN_MARK_DECL(NewObject, jobject);
1508 #else /* USDT2 */
1509 DT_RETURN_MARK_DECL(NewObject, jobject
1510 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1511 #endif /* USDT2 */
1512
1513 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1514 JNIWrapper("NewObject");
1515 #ifndef USDT2
1516 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1517 #else /* USDT2 */
1518 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1519 env, clazz, (uintptr_t) methodID);
1520 #endif /* USDT2 */
1521 jobject obj = NULL;
1522 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1523
1524 instanceOop i = alloc_object(clazz, CHECK_NULL);
1525 obj = JNIHandles::make_local(env, i);
1526 va_list args;
1527 va_start(args, methodID);
1528 JavaValue jvalue(T_VOID);
1529 JNI_ArgumentPusherVaArg ap(methodID, args);
1530 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1531 va_end(args);
1532 return obj;
1533 JNI_END
1534
1535
1536 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1537 JNIWrapper("GetObjectClass");
1538 #ifndef USDT2
1539 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1540 #else /* USDT2 */
1541 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1542 env, obj);
1543 #endif /* USDT2 */
1544 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1545 jclass ret =
1546 (jclass) JNIHandles::make_local(env, k->java_mirror());
1547 #ifndef USDT2
1548 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1549 #else /* USDT2 */
1550 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1551 ret);
1552 #endif /* USDT2 */
1553 return ret;
1554 JNI_END
1555
1556 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1557 JNIWrapper("IsInstanceOf");
1558 #ifndef USDT2
1559 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1560 #else /* USDT2 */
1561 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1562 env, obj, clazz);
1563 #endif /* USDT2 */
1564 jboolean ret = JNI_TRUE;
1565 if (obj != NULL) {
1566 ret = JNI_FALSE;
1567 Klass* k = java_lang_Class::as_Klass(
1568 JNIHandles::resolve_non_null(clazz));
1569 if (k != NULL) {
1570 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1571 }
1572 }
1573 #ifndef USDT2
1574 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1575 #else /* USDT2 */
1576 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1577 ret);
1578 #endif /* USDT2 */
1579 return ret;
1580 JNI_END
1581
1582
1583 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1584 const char *sig, bool is_static, TRAPS) {
1585 // %%%% This code should probably just call into a method in the LinkResolver
1586 //
1587 // The class should have been loaded (we have an instance of the class
1588 // passed in) so the method and signature should already be in the symbol
1589 // table. If they're not there, the method doesn't exist.
1590 const char *name_to_probe = (name_str == NULL)
1591 ? vmSymbols::object_initializer_name()->as_C_string()
1592 : name_str;
1593 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1594 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1595
1596 if (name == NULL || signature == NULL) {
1597 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1598 }
1599
1600 // Throw a NoSuchMethodError exception if we have an instance of a
1601 // primitive java.lang.Class
1602 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1603 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1604 }
1605
1606 KlassHandle klass(THREAD,
1607 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1608
1609 // Make sure class is linked and initialized before handing id's out to
1610 // Method*s.
1611 klass()->initialize(CHECK_NULL);
1612
1613 Method* m;
1614 if (name == vmSymbols::object_initializer_name() ||
1615 name == vmSymbols::class_initializer_name()) {
1616 // Never search superclasses for constructors
1617 if (klass->oop_is_instance()) {
1618 m = InstanceKlass::cast(klass())->find_method(name, signature);
1619 } else {
1620 m = NULL;
1621 }
1622 } else {
1623 m = klass->lookup_method(name, signature);
1624 // Look up interfaces
1625 if (m == NULL && klass->oop_is_instance()) {
1626 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1627 signature);
1628 }
1629 }
1630 if (m == NULL || (m->is_static() != is_static)) {
1631 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1632 }
1633 return m->jmethod_id();
1634 }
1635
1636
1637 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1638 const char *name, const char *sig))
1639 JNIWrapper("GetMethodID");
1640 #ifndef USDT2
1641 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1642 #else /* USDT2 */
1643 HOTSPOT_JNI_GETMETHODID_ENTRY(
1644 env, clazz, (char *) name, (char *) sig);
1645 #endif /* USDT2 */
1646 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1647 #ifndef USDT2
1648 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1649 #else /* USDT2 */
1650 HOTSPOT_JNI_GETMETHODID_RETURN(
1651 (uintptr_t) ret);
1652 #endif /* USDT2 */
1653 return ret;
1654 JNI_END
1655
1656
1657 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1658 const char *name, const char *sig))
1659 JNIWrapper("GetStaticMethodID");
1660 #ifndef USDT2
1661 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1662 #else /* USDT2 */
1663 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1664 env, (char *) clazz, (char *) name, (char *)sig);
1665 #endif /* USDT2 */
1666 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1667 #ifndef USDT2
1668 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1669 #else /* USDT2 */
1670 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1671 (uintptr_t) ret);
1672 #endif /* USDT2 */
1673 return ret;
1674 JNI_END
1675
1676
1677
1678 //
1679 // Calling Methods
1680 //
1681
1682 #ifndef USDT2
1683 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1684 \
1685 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1686 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1687 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1688 \
1689 JNI_ENTRY(ResultType, \
1690 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1691 JNIWrapper("Call" XSTR(Result) "Method"); \
1692 \
1693 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1694 ResultType ret = 0;\
1695 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1696 (const ResultType&)ret);\
1697 \
1698 va_list args; \
1699 va_start(args, methodID); \
1700 JavaValue jvalue(Tag); \
1701 JNI_ArgumentPusherVaArg ap(methodID, args); \
1702 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1703 va_end(args); \
1704 ret = jvalue.get_##ResultType(); \
1705 return ret;\
1706 JNI_END \
1707 \
1708 \
1709 JNI_ENTRY(ResultType, \
1710 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1711 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1712 \
1713 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1714 ResultType ret = 0;\
1715 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1716 (const ResultType&)ret);\
1717 \
1718 JavaValue jvalue(Tag); \
1719 JNI_ArgumentPusherVaArg ap(methodID, args); \
1720 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1721 ret = jvalue.get_##ResultType(); \
1722 return ret;\
1723 JNI_END \
1724 \
1725 \
1726 JNI_ENTRY(ResultType, \
1727 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1728 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1729 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1730 ResultType ret = 0;\
1731 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1732 (const ResultType&)ret);\
1733 \
1734 JavaValue jvalue(Tag); \
1735 JNI_ArgumentPusherArray ap(methodID, args); \
1736 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1737 ret = jvalue.get_##ResultType(); \
1738 return ret;\
1739 JNI_END
1740
1741 // the runtime type of subword integral basic types is integer
1742 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1743 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1744 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1745 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1746
1747 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1748 DEFINE_CALLMETHOD(jint, Int, T_INT)
1749 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1750 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1751 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1752
1753 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1754 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1755 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1756
1757 #else /* USDT2 */
1758
1759 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1760 , EntryProbe, ReturnProbe) \
1761 \
1762 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1763 , ReturnProbe); \
1764 \
1765 JNI_ENTRY(ResultType, \
1766 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1767 JNIWrapper("Call" XSTR(Result) "Method"); \
1768 \
1769 EntryProbe; \
1770 ResultType ret = 0;\
1771 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1772 (const ResultType&)ret);\
1773 \
1774 va_list args; \
1775 va_start(args, methodID); \
1776 JavaValue jvalue(Tag); \
1777 JNI_ArgumentPusherVaArg ap(methodID, args); \
1778 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1779 va_end(args); \
1780 ret = jvalue.get_##ResultType(); \
1781 return ret;\
1782 JNI_END
1783
1784 // the runtime type of subword integral basic types is integer
1785 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1786 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1787 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1788 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1789 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1790 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1791 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1792 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1793 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1794 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1795 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1796 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1797
1798 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1799 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1800 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1801 DEFINE_CALLMETHOD(jint, Int, T_INT,
1802 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1803 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1804 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1805 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1806 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1807 // Float and double probes don't return value because dtrace doesn't currently support it
1808 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1809 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1810 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1811 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1812 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1813 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1814
1815 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1816 , EntryProbe, ReturnProbe) \
1817 \
1818 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1819 , ReturnProbe); \
1820 \
1821 JNI_ENTRY(ResultType, \
1822 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1823 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1824 \
1825 EntryProbe;\
1826 ResultType ret = 0;\
1827 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1828 (const ResultType&)ret);\
1829 \
1830 JavaValue jvalue(Tag); \
1831 JNI_ArgumentPusherVaArg ap(methodID, args); \
1832 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1833 ret = jvalue.get_##ResultType(); \
1834 return ret;\
1835 JNI_END
1836
1837 // the runtime type of subword integral basic types is integer
1838 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1839 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1840 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1841 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1842 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1843 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1844 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1845 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1846 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1847 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1848 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1849 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1850
1851 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1852 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1853 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1854 DEFINE_CALLMETHODV(jint, Int, T_INT,
1855 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1856 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1857 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1858 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1859 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1860 // Float and double probes don't return value because dtrace doesn't currently support it
1861 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1862 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1863 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1864 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1865 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1866 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1867
1868 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1869 , EntryProbe, ReturnProbe) \
1870 \
1871 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1872 , ReturnProbe); \
1873 \
1874 JNI_ENTRY(ResultType, \
1875 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1876 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1877 EntryProbe; \
1878 ResultType ret = 0;\
1879 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1880 (const ResultType&)ret);\
1881 \
1882 JavaValue jvalue(Tag); \
1883 JNI_ArgumentPusherArray ap(methodID, args); \
1884 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1885 ret = jvalue.get_##ResultType(); \
1886 return ret;\
1887 JNI_END
1888
1889 // the runtime type of subword integral basic types is integer
1890 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1891 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1892 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1893 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1894 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1895 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1896 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1897 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1898 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1899 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1900 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1901 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1902
1903 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1904 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1905 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1906 DEFINE_CALLMETHODA(jint, Int, T_INT,
1907 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1908 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1909 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1910 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1911 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1912 // Float and double probes don't return value because dtrace doesn't currently support it
1913 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1914 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1915 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1916 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1917 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1918 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1919
1920 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1921 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1922 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1923
1924 #endif /* USDT2 */
1925
1926 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1927 JNIWrapper("CallVoidMethod");
1928 #ifndef USDT2
1929 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1930 #else /* USDT2 */
1931 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1932 env, obj, (uintptr_t) methodID);
1933 #endif /* USDT2 */
1934 DT_VOID_RETURN_MARK(CallVoidMethod);
1935
1936 va_list args;
1937 va_start(args, methodID);
1938 JavaValue jvalue(T_VOID);
1939 JNI_ArgumentPusherVaArg ap(methodID, args);
1940 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1941 va_end(args);
1942 JNI_END
1943
1944
1945 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1946 JNIWrapper("CallVoidMethodV");
1947 #ifndef USDT2
1948 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1949 #else /* USDT2 */
1950 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1951 env, obj, (uintptr_t) methodID);
1952 #endif /* USDT2 */
1953 DT_VOID_RETURN_MARK(CallVoidMethodV);
1954
1955 JavaValue jvalue(T_VOID);
1956 JNI_ArgumentPusherVaArg ap(methodID, args);
1957 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1958 JNI_END
1959
1960
1961 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1962 JNIWrapper("CallVoidMethodA");
1963 #ifndef USDT2
1964 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1965 #else /* USDT2 */
1966 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1967 env, obj, (uintptr_t) methodID);
1968 #endif /* USDT2 */
1969 DT_VOID_RETURN_MARK(CallVoidMethodA);
1970
1971 JavaValue jvalue(T_VOID);
1972 JNI_ArgumentPusherArray ap(methodID, args);
1973 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1974 JNI_END
1975
1976
1977 #ifndef USDT2
1978 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1979 \
1980 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1981 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1982 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1983 \
1984 JNI_ENTRY(ResultType, \
1985 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1986 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1987 \
1988 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1989 ResultType ret;\
1990 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1991 (const ResultType&)ret);\
1992 \
1993 va_list args; \
1994 va_start(args, methodID); \
1995 JavaValue jvalue(Tag); \
1996 JNI_ArgumentPusherVaArg ap(methodID, args); \
1997 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1998 va_end(args); \
1999 ret = jvalue.get_##ResultType(); \
2000 return ret;\
2001 JNI_END \
2002 \
2003 JNI_ENTRY(ResultType, \
2004 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2005 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
2006 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
2007 ResultType ret;\
2008 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2009 (const ResultType&)ret);\
2010 \
2011 JavaValue jvalue(Tag); \
2012 JNI_ArgumentPusherVaArg ap(methodID, args); \
2013 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2014 ret = jvalue.get_##ResultType(); \
2015 return ret;\
2016 JNI_END \
2017 \
2018 JNI_ENTRY(ResultType, \
2019 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2020 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2021 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
2022 ResultType ret;\
2023 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2024 (const ResultType&)ret);\
2025 \
2026 JavaValue jvalue(Tag); \
2027 JNI_ArgumentPusherArray ap(methodID, args); \
2028 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2029 ret = jvalue.get_##ResultType(); \
2030 return ret;\
2031 JNI_END
2032
2033 // the runtime type of subword integral basic types is integer
2034 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2035 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2036 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2037 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2038
2039 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2040 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2041 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2042 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2043 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2044
2045
2046 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2047 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2048 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2049
2050 #else /* USDT2 */
2051
2052 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2053 , EntryProbe, ReturnProbe) \
2054 \
2055 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2056 , ReturnProbe);\
2057 \
2058 JNI_ENTRY(ResultType, \
2059 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2060 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2061 \
2062 EntryProbe;\
2063 ResultType ret;\
2064 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2065 (const ResultType&)ret);\
2066 \
2067 va_list args; \
2068 va_start(args, methodID); \
2069 JavaValue jvalue(Tag); \
2070 JNI_ArgumentPusherVaArg ap(methodID, args); \
2071 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2072 va_end(args); \
2073 ret = jvalue.get_##ResultType(); \
2074 return ret;\
2075 JNI_END
2076
2077 // the runtime type of subword integral basic types is integer
2078 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2079 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2080 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2081 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2082 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2083 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2084 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2085 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2086 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2087 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2088 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2089 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2090
2091 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2092 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2093 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2094 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2095 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2096 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2097 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2098 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2099 // Float and double probes don't return value because dtrace doesn't currently support it
2100 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2101 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2102 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2103 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2104 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2105 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2106 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2107
2108 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2109 , EntryProbe, ReturnProbe) \
2110 \
2111 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2112 , ReturnProbe);\
2113 \
2114 JNI_ENTRY(ResultType, \
2115 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2116 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2117 \
2118 EntryProbe;\
2119 ResultType ret;\
2120 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2121 (const ResultType&)ret);\
2122 \
2123 JavaValue jvalue(Tag); \
2124 JNI_ArgumentPusherVaArg ap(methodID, args); \
2125 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2126 ret = jvalue.get_##ResultType(); \
2127 return ret;\
2128 JNI_END
2129
2130 // the runtime type of subword integral basic types is integer
2131 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2132 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2133 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2134 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2135 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2136 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2137 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2138 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2139 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2140 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2141 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2142 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2143
2144 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2145 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2146 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2147 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2148 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2149 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2150 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2151 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2152 // Float and double probes don't return value because dtrace doesn't currently support it
2153 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2154 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2155 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2156 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2157 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2158 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2159 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2160
2161 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2162 , EntryProbe, ReturnProbe) \
2163 \
2164 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2165 , ReturnProbe);\
2166 \
2167 JNI_ENTRY(ResultType, \
2168 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2169 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2170 \
2171 EntryProbe;\
2172 ResultType ret;\
2173 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2174 (const ResultType&)ret);\
2175 \
2176 JavaValue jvalue(Tag); \
2177 JNI_ArgumentPusherArray ap(methodID, args); \
2178 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2179 ret = jvalue.get_##ResultType(); \
2180 return ret;\
2181 JNI_END
2182
2183 // the runtime type of subword integral basic types is integer
2184 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2185 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2186 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2187 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2188 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2189 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2190 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2191 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2192 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2193 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2194 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2195 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2196
2197 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2198 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2199 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2200 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2201 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2202 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2203 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2204 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2205 // Float and double probes don't return value because dtrace doesn't currently support it
2206 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2207 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2208 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2209 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2210 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2211 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2212 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2213
2214 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2215 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2216 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2217 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2218 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2219 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2220 #endif /* USDT2 */
2221
2222 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2223 JNIWrapper("CallNonvirtualVoidMethod");
2224
2225 #ifndef USDT2
2226 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2227 env, obj, cls, methodID);
2228 #else /* USDT2 */
2229 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2230 env, obj, cls, (uintptr_t) methodID);
2231 #endif /* USDT2 */
2232 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2233
2234 va_list args;
2235 va_start(args, methodID);
2236 JavaValue jvalue(T_VOID);
2237 JNI_ArgumentPusherVaArg ap(methodID, args);
2238 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2239 va_end(args);
2240 JNI_END
2241
2242
2243 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2244 JNIWrapper("CallNonvirtualVoidMethodV");
2245
2246 #ifndef USDT2
2247 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2248 env, obj, cls, methodID);
2249 #else /* USDT2 */
2250 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2251 env, obj, cls, (uintptr_t) methodID);
2252 #endif /* USDT2 */
2253 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2254
2255 JavaValue jvalue(T_VOID);
2256 JNI_ArgumentPusherVaArg ap(methodID, args);
2257 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2258 JNI_END
2259
2260
2261 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2262 JNIWrapper("CallNonvirtualVoidMethodA");
2263 #ifndef USDT2
2264 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2265 env, obj, cls, methodID);
2266 #else /* USDT2 */
2267 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2268 env, obj, cls, (uintptr_t) methodID);
2269 #endif /* USDT2 */
2270 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2271 JavaValue jvalue(T_VOID);
2272 JNI_ArgumentPusherArray ap(methodID, args);
2273 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2274 JNI_END
2275
2276
2277 #ifndef USDT2
2278 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2279 \
2280 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2281 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2282 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2283 \
2284 JNI_ENTRY(ResultType, \
2285 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2286 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2287 \
2288 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2289 ResultType ret = 0;\
2290 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2291 (const ResultType&)ret);\
2292 \
2293 va_list args; \
2294 va_start(args, methodID); \
2295 JavaValue jvalue(Tag); \
2296 JNI_ArgumentPusherVaArg ap(methodID, args); \
2297 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2298 va_end(args); \
2299 ret = jvalue.get_##ResultType(); \
2300 return ret;\
2301 JNI_END \
2302 \
2303 JNI_ENTRY(ResultType, \
2304 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2305 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2306 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2307 ResultType ret = 0;\
2308 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2309 (const ResultType&)ret);\
2310 \
2311 JavaValue jvalue(Tag); \
2312 JNI_ArgumentPusherVaArg ap(methodID, args); \
2313 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2314 ret = jvalue.get_##ResultType(); \
2315 return ret;\
2316 JNI_END \
2317 \
2318 JNI_ENTRY(ResultType, \
2319 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2320 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2321 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2322 ResultType ret = 0;\
2323 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2324 (const ResultType&)ret);\
2325 \
2326 JavaValue jvalue(Tag); \
2327 JNI_ArgumentPusherArray ap(methodID, args); \
2328 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2329 ret = jvalue.get_##ResultType(); \
2330 return ret;\
2331 JNI_END
2332
2333 // the runtime type of subword integral basic types is integer
2334 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2335 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2336 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2337 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2338
2339 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2340 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2341 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2342 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2343 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2344
2345
2346 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2347 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2348 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2349
2350 #else /* USDT2 */
2351
2352 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2353 , EntryProbe, ResultProbe) \
2354 \
2355 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2356 , ResultProbe); \
2357 \
2358 JNI_ENTRY(ResultType, \
2359 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2360 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2361 \
2362 EntryProbe; \
2363 ResultType ret = 0;\
2364 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2365 (const ResultType&)ret);\
2366 \
2367 va_list args; \
2368 va_start(args, methodID); \
2369 JavaValue jvalue(Tag); \
2370 JNI_ArgumentPusherVaArg ap(methodID, args); \
2371 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2372 va_end(args); \
2373 ret = jvalue.get_##ResultType(); \
2374 return ret;\
2375 JNI_END
2376
2377 // the runtime type of subword integral basic types is integer
2378 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2379 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2380 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2381 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2382 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2383 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2384 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2385 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2386 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2387 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2388 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2389 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2390
2391 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2392 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2393 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2394 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2395 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2396 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2397 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2398 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2399 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2400 // Float and double probes don't return value because dtrace doesn't currently support it
2401 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2402 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2403 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2404 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2405 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2406 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2407
2408 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2409 , EntryProbe, ResultProbe) \
2410 \
2411 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2412 , ResultProbe); \
2413 \
2414 JNI_ENTRY(ResultType, \
2415 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2416 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2417 \
2418 EntryProbe; \
2419 ResultType ret = 0;\
2420 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2421 (const ResultType&)ret);\
2422 \
2423 JavaValue jvalue(Tag); \
2424 JNI_ArgumentPusherVaArg ap(methodID, args); \
2425 /* Make sure class is initialized before trying to invoke its method */ \
2426 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2427 k()->initialize(CHECK_0); \
2428 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2429 va_end(args); \
2430 ret = jvalue.get_##ResultType(); \
2431 return ret;\
2432 JNI_END
2433
2434 // the runtime type of subword integral basic types is integer
2435 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2436 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2437 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2438 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2439 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2440 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2441 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2442 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2443 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2444 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2445 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2446 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2447
2448 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2449 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2450 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2451 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2452 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2453 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2454 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2455 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2456 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2457 // Float and double probes don't return value because dtrace doesn't currently support it
2458 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2459 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2460 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2461 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2462 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2463 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2464
2465 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2466 , EntryProbe, ResultProbe) \
2467 \
2468 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2469 , ResultProbe); \
2470 \
2471 JNI_ENTRY(ResultType, \
2472 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2473 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2474 \
2475 EntryProbe; \
2476 ResultType ret = 0;\
2477 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2478 (const ResultType&)ret);\
2479 \
2480 JavaValue jvalue(Tag); \
2481 JNI_ArgumentPusherArray ap(methodID, args); \
2482 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2483 ret = jvalue.get_##ResultType(); \
2484 return ret;\
2485 JNI_END
2486
2487 // the runtime type of subword integral basic types is integer
2488 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2489 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2490 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2491 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2492 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2493 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2494 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2495 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2496 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2497 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2498 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2499 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2500
2501 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2502 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2503 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2504 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2505 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2506 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2507 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2508 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2509 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2510 // Float and double probes don't return value because dtrace doesn't currently support it
2511 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2512 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2513 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2514 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2515 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2516 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2517
2518 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2519 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2520 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2521 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2522 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2523 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2524 #endif /* USDT2 */
2525
2526 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2527 JNIWrapper("CallStaticVoidMethod");
2528 #ifndef USDT2
2529 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2530 #else /* USDT2 */
2531 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2532 env, cls, (uintptr_t) methodID);
2533 #endif /* USDT2 */
2534 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2535
2536 va_list args;
2537 va_start(args, methodID);
2538 JavaValue jvalue(T_VOID);
2539 JNI_ArgumentPusherVaArg ap(methodID, args);
2540 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2541 va_end(args);
2542 JNI_END
2543
2544
2545 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2546 JNIWrapper("CallStaticVoidMethodV");
2547 #ifndef USDT2
2548 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2549 #else /* USDT2 */
2550 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2551 env, cls, (uintptr_t) methodID);
2552 #endif /* USDT2 */
2553 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2554
2555 JavaValue jvalue(T_VOID);
2556 JNI_ArgumentPusherVaArg ap(methodID, args);
2557 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2558 JNI_END
2559
2560
2561 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2562 JNIWrapper("CallStaticVoidMethodA");
2563 #ifndef USDT2
2564 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2565 #else /* USDT2 */
2566 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2567 env, cls, (uintptr_t) methodID);
2568 #endif /* USDT2 */
2569 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2570
2571 JavaValue jvalue(T_VOID);
2572 JNI_ArgumentPusherArray ap(methodID, args);
2573 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2574 JNI_END
2575
2576
2577 //
2578 // Accessing Fields
2579 //
2580
2581
2582 #ifndef USDT2
2583 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2584 #else /* USDT2 */
2585 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2586 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2587 #endif /* USDT2 */
2588
2589 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2590 const char *name, const char *sig))
2591 JNIWrapper("GetFieldID");
2592 #ifndef USDT2
2593 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2594 #else /* USDT2 */
2595 HOTSPOT_JNI_GETFIELDID_ENTRY(
2596 env, clazz, (char *) name, (char *) sig);
2597 #endif /* USDT2 */
2598 jfieldID ret = 0;
2599 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2600
2601 // The class should have been loaded (we have an instance of the class
2602 // passed in) so the field and signature should already be in the symbol
2603 // table. If they're not there, the field doesn't exist.
2604 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2605 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2606 if (fieldname == NULL || signame == NULL) {
2607 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2608 }
2609 KlassHandle k(THREAD,
2610 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2611 // Make sure class is initialized before handing id's out to fields
2612 k()->initialize(CHECK_NULL);
2613
2614 fieldDescriptor fd;
2615 if (!k()->oop_is_instance() ||
2616 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2617 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2618 }
2619
2620 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2621 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2622 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2623 return ret;
2624 JNI_END
2625
2626
2627 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2628 JNIWrapper("GetObjectField");
2629 #ifndef USDT2
2630 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2631 #else /* USDT2 */
2632 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2633 env, obj, (uintptr_t) fieldID);
2634 #endif /* USDT2 */
2635 oop o = JNIHandles::resolve_non_null(obj);
2636 Klass* k = o->klass();
2637 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2638 // Keep JVMTI addition small and only check enabled flag here.
2639 // jni_GetField_probe() assumes that is okay to create handles.
2640 if (JvmtiExport::should_post_field_access()) {
2641 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2642 }
2643 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2644 #ifndef SERIALGC
2645 // If G1 is enabled and we are accessing the value of the referent
2646 // field in a reference object then we need to register a non-null
2647 // referent with the SATB barrier.
2648 if (UseG1GC) {
2649 bool needs_barrier = false;
2650
2651 if (ret != NULL &&
2652 offset == java_lang_ref_Reference::referent_offset &&
2653 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2654 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2655 needs_barrier = true;
2656 }
2657
2658 if (needs_barrier) {
2659 oop referent = JNIHandles::resolve(ret);
2660 G1SATBCardTableModRefBS::enqueue(referent);
2661 }
2662 }
2663 #endif // SERIALGC
2664 #ifndef USDT2
2665 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2666 #else /* USDT2 */
2667 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2668 ret);
2669 #endif /* USDT2 */
2670 return ret;
2671 JNI_END
2672
2673
2674 #ifndef USDT2
2675 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2676 \
2677 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2678 \
2679 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2680 JNIWrapper("Get" XSTR(Result) "Field"); \
2681 \
2682 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2683 Return ret = 0;\
2684 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2685 \
2686 oop o = JNIHandles::resolve_non_null(obj); \
2687 Klass* k = o->klass(); \
2688 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2689 /* Keep JVMTI addition small and only check enabled flag here. */ \
2690 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2691 /* and creates a ResetNoHandleMark. */ \
2692 if (JvmtiExport::should_post_field_access()) { \
2693 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2694 } \
2695 ret = o->Fieldname##_field(offset); \
2696 return ret; \
2697 JNI_END
2698
2699 DEFINE_GETFIELD(jboolean, bool, Boolean)
2700 DEFINE_GETFIELD(jbyte, byte, Byte)
2701 DEFINE_GETFIELD(jchar, char, Char)
2702 DEFINE_GETFIELD(jshort, short, Short)
2703 DEFINE_GETFIELD(jint, int, Int)
2704 DEFINE_GETFIELD(jlong, long, Long)
2705 DEFINE_GETFIELD(jfloat, float, Float)
2706 DEFINE_GETFIELD(jdouble, double, Double)
2707
2708 #else /* USDT2 */
2709
2710 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2711 , EntryProbe, ReturnProbe) \
2712 \
2713 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2714 , ReturnProbe); \
2715 \
2716 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2717 JNIWrapper("Get" XSTR(Result) "Field"); \
2718 \
2719 EntryProbe; \
2720 Return ret = 0;\
2721 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2722 \
2723 oop o = JNIHandles::resolve_non_null(obj); \
2724 Klass* k = o->klass(); \
2725 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2726 /* Keep JVMTI addition small and only check enabled flag here. */ \
2727 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2728 /* and creates a ResetNoHandleMark. */ \
2729 if (JvmtiExport::should_post_field_access()) { \
2730 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2731 } \
2732 ret = o->Fieldname##_field(offset); \
2733 return ret; \
2734 JNI_END
2735
2736 DEFINE_GETFIELD(jboolean, bool, Boolean
2737 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2738 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2739 DEFINE_GETFIELD(jbyte, byte, Byte
2740 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2741 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2742 DEFINE_GETFIELD(jchar, char, Char
2743 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2744 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2745 DEFINE_GETFIELD(jshort, short, Short
2746 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2747 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2748 DEFINE_GETFIELD(jint, int, Int
2749 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2750 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2751 DEFINE_GETFIELD(jlong, long, Long
2752 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2753 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2754 // Float and double probes don't return value because dtrace doesn't currently support it
2755 DEFINE_GETFIELD(jfloat, float, Float
2756 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2757 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2758 DEFINE_GETFIELD(jdouble, double, Double
2759 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2760 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2761 #endif /* USDT2 */
2762
2763 address jni_GetBooleanField_addr() {
2764 return (address)jni_GetBooleanField;
2765 }
2766 address jni_GetByteField_addr() {
2767 return (address)jni_GetByteField;
2768 }
2769 address jni_GetCharField_addr() {
2770 return (address)jni_GetCharField;
2771 }
2772 address jni_GetShortField_addr() {
2773 return (address)jni_GetShortField;
2774 }
2775 address jni_GetIntField_addr() {
2776 return (address)jni_GetIntField;
2777 }
2778 address jni_GetLongField_addr() {
2779 return (address)jni_GetLongField;
2780 }
2781 address jni_GetFloatField_addr() {
2782 return (address)jni_GetFloatField;
2783 }
2784 address jni_GetDoubleField_addr() {
2785 return (address)jni_GetDoubleField;
2786 }
2787
2788 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2789 JNIWrapper("SetObjectField");
2790 #ifndef USDT2
2791 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2792 #else /* USDT2 */
2793 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2794 env, obj, (uintptr_t) fieldID, value);
2795 #endif /* USDT2 */
2796 oop o = JNIHandles::resolve_non_null(obj);
2797 Klass* k = o->klass();
2798 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2799 // Keep JVMTI addition small and only check enabled flag here.
2800 // jni_SetField_probe_nh() assumes that is not okay to create handles
2801 // and creates a ResetNoHandleMark.
2802 if (JvmtiExport::should_post_field_modification()) {
2803 jvalue field_value;
2804 field_value.l = value;
2805 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2806 }
2807 o->obj_field_put(offset, JNIHandles::resolve(value));
2808 #ifndef USDT2
2809 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2810 #else /* USDT2 */
2811 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2812 );
2813 #endif /* USDT2 */
2814 JNI_END
2815
2816 #ifndef USDT2
2817 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2818 \
2819 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2820 JNIWrapper("Set" XSTR(Result) "Field"); \
2821 \
2822 FP_SELECT_##Result( \
2823 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2824 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2825 \
2826 oop o = JNIHandles::resolve_non_null(obj); \
2827 Klass* k = o->klass(); \
2828 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2829 /* Keep JVMTI addition small and only check enabled flag here. */ \
2830 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2831 /* and creates a ResetNoHandleMark. */ \
2832 if (JvmtiExport::should_post_field_modification()) { \
2833 jvalue field_value; \
2834 field_value.unionType = value; \
2835 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2836 } \
2837 o->Fieldname##_field_put(offset, value); \
2838 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2839 JNI_END
2840
2841 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2842 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2843 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2844 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2845 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2846 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2847 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2848 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2849
2850 #else /* USDT2 */
2851
2852 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2853 , EntryProbe, ReturnProbe) \
2854 \
2855 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2856 JNIWrapper("Set" XSTR(Result) "Field"); \
2857 \
2858 EntryProbe; \
2859 \
2860 oop o = JNIHandles::resolve_non_null(obj); \
2861 Klass* k = o->klass(); \
2862 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2863 /* Keep JVMTI addition small and only check enabled flag here. */ \
2864 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2865 /* and creates a ResetNoHandleMark. */ \
2866 if (JvmtiExport::should_post_field_modification()) { \
2867 jvalue field_value; \
2868 field_value.unionType = value; \
2869 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2870 } \
2871 o->Fieldname##_field_put(offset, value); \
2872 ReturnProbe; \
2873 JNI_END
2874
2875 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2876 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2877 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2878 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2879 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2880 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2881 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2882 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2883 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2884 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2885 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2886 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2887 DEFINE_SETFIELD(jint, int, Int, 'I', i
2888 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2889 HOTSPOT_JNI_SETINTFIELD_RETURN())
2890 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2891 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2892 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2893 // Float and double probes don't return value because dtrace doesn't currently support it
2894 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2895 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2896 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2897 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2898 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2899 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2900 #endif /* USDT2 */
2901
2902 #ifndef USDT2
2903 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2904 #else /* USDT2 */
2905 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2906 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2907 #endif /* USDT2 */
2908
2909 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2910 JNIWrapper("ToReflectedField");
2911 #ifndef USDT2
2912 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2913 env, cls, fieldID, isStatic);
2914 #else /* USDT2 */
2915 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2916 env, cls, (uintptr_t) fieldID, isStatic);
2917 #endif /* USDT2 */
2918 jobject ret = NULL;
2919 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2920
2921 fieldDescriptor fd;
2922 bool found = false;
2923 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2924
2925 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2926
2927 if (isStatic) {
2928 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2929 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2930 assert(id->is_static_field_id(), "invalid static field id");
2931 found = id->find_local_field(&fd);
2932 } else {
2933 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2934 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2935 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2936 }
2937 assert(found, "bad fieldID passed into jni_ToReflectedField");
2938 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2939 ret = JNIHandles::make_local(env, reflected);
2940 return ret;
2941 JNI_END
2942
2943
2944 //
2945 // Accessing Static Fields
2946 //
2947 #ifndef USDT2
2948 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2949 #else /* USDT2 */
2950 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2951 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2952 #endif /* USDT2 */
2953
2954 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2955 const char *name, const char *sig))
2956 JNIWrapper("GetStaticFieldID");
2957 #ifndef USDT2
2958 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2959 #else /* USDT2 */
2960 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2961 env, clazz, (char *) name, (char *) sig);
2962 #endif /* USDT2 */
2963 jfieldID ret = NULL;
2964 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2965
2966 // The class should have been loaded (we have an instance of the class
2967 // passed in) so the field and signature should already be in the symbol
2968 // table. If they're not there, the field doesn't exist.
2969 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2970 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2971 if (fieldname == NULL || signame == NULL) {
2972 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2973 }
2974 KlassHandle k(THREAD,
2975 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2976 // Make sure class is initialized before handing id's out to static fields
2977 k()->initialize(CHECK_NULL);
2978
2979 fieldDescriptor fd;
2980 if (!k()->oop_is_instance() ||
2981 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2982 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2983 }
2984
2985 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2986 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2987 debug_only(id->set_is_static_field_id();)
2988
2989 debug_only(id->verify(fd.field_holder()));
2990
2991 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2992 return ret;
2993 JNI_END
2994
2995
2996 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2997 JNIWrapper("GetStaticObjectField");
2998 #ifndef USDT2
2999 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
3000 #else /* USDT2 */
3001 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
3002 env, clazz, (uintptr_t) fieldID);
3003 #endif /* USDT2 */
3004 #if INCLUDE_JNI_CHECK
3005 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
3006 #endif // INCLUDE_JNI_CHECK
3007 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3008 assert(id->is_static_field_id(), "invalid static field id");
3009 // Keep JVMTI addition small and only check enabled flag here.
3010 // jni_GetField_probe() assumes that is okay to create handles.
3011 if (JvmtiExport::should_post_field_access()) {
3012 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
3013 }
3014 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
3015 #ifndef USDT2
3016 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
3017 #else /* USDT2 */
3018 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
3019 ret);
3020 #endif /* USDT2 */
3021 return ret;
3022 JNI_END
3023
3024 #ifndef USDT2
3025 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3026 \
3027 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3028 \
3029 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3030 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3031 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3032 Return ret = 0;\
3033 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3034 (const Return&)ret);\
3035 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3036 assert(id->is_static_field_id(), "invalid static field id"); \
3037 /* Keep JVMTI addition small and only check enabled flag here. */ \
3038 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3039 if (JvmtiExport::should_post_field_access()) { \
3040 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3041 } \
3042 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3043 return ret;\
3044 JNI_END
3045
3046 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3047 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3048 DEFINE_GETSTATICFIELD(jchar, char, Char)
3049 DEFINE_GETSTATICFIELD(jshort, short, Short)
3050 DEFINE_GETSTATICFIELD(jint, int, Int)
3051 DEFINE_GETSTATICFIELD(jlong, long, Long)
3052 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3053 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3054
3055 #else /* USDT2 */
3056
3057 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3058 , EntryProbe, ReturnProbe) \
3059 \
3060 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3061 , ReturnProbe); \
3062 \
3063 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3064 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3065 EntryProbe; \
3066 Return ret = 0;\
3067 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3068 (const Return&)ret);\
3069 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3070 assert(id->is_static_field_id(), "invalid static field id"); \
3071 /* Keep JVMTI addition small and only check enabled flag here. */ \
3072 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3073 if (JvmtiExport::should_post_field_access()) { \
3074 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3075 } \
3076 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3077 return ret;\
3078 JNI_END
3079
3080 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3081 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3082 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3083 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3084 DEFINE_GETSTATICFIELD(jchar, char, Char
3085 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3086 DEFINE_GETSTATICFIELD(jshort, short, Short
3087 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3088 DEFINE_GETSTATICFIELD(jint, int, Int
3089 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3090 DEFINE_GETSTATICFIELD(jlong, long, Long
3091 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3092 // Float and double probes don't return value because dtrace doesn't currently support it
3093 DEFINE_GETSTATICFIELD(jfloat, float, Float
3094 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3095 DEFINE_GETSTATICFIELD(jdouble, double, Double
3096 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3097 #endif /* USDT2 */
3098
3099 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3100 JNIWrapper("SetStaticObjectField");
3101 #ifndef USDT2
3102 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3103 #else /* USDT2 */
3104 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3105 env, clazz, (uintptr_t) fieldID, value);
3106 #endif /* USDT2 */
3107 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3108 assert(id->is_static_field_id(), "invalid static field id");
3109 // Keep JVMTI addition small and only check enabled flag here.
3110 // jni_SetField_probe() assumes that is okay to create handles.
3111 if (JvmtiExport::should_post_field_modification()) {
3112 jvalue field_value;
3113 field_value.l = value;
3114 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3115 }
3116 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3117 #ifndef USDT2
3118 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3119 #else /* USDT2 */
3120 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3121 );
3122 #endif /* USDT2 */
3123 JNI_END
3124
3125
3126 #ifndef USDT2
3127 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3128 \
3129 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3130 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3131 FP_SELECT_##Result( \
3132 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3133 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3134 \
3135 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3136 assert(id->is_static_field_id(), "invalid static field id"); \
3137 /* Keep JVMTI addition small and only check enabled flag here. */ \
3138 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3139 if (JvmtiExport::should_post_field_modification()) { \
3140 jvalue field_value; \
3141 field_value.unionType = value; \
3142 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3143 } \
3144 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3145 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3146 JNI_END
3147
3148 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3149 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3150 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3151 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3152 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3153 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3154 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3155 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3156
3157 #else /* USDT2 */
3158
3159 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3160 , EntryProbe, ReturnProbe) \
3161 \
3162 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3163 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3164 EntryProbe; \
3165 \
3166 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3167 assert(id->is_static_field_id(), "invalid static field id"); \
3168 /* Keep JVMTI addition small and only check enabled flag here. */ \
3169 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3170 if (JvmtiExport::should_post_field_modification()) { \
3171 jvalue field_value; \
3172 field_value.unionType = value; \
3173 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3174 } \
3175 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3176 ReturnProbe;\
3177 JNI_END
3178
3179 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3180 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3181 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3182 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3183 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3184 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3185 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3186 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3187 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3188 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3189 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3190 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3191 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3192 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3193 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3194 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3195 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3196 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3197 // Float and double probes don't return value because dtrace doesn't currently support it
3198 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3199 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3200 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3201 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3202 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3203 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3204 #endif /* USDT2 */
3205
3206 //
3207 // String Operations
3208 //
3209
3210 // Unicode Interface
3211
3212 #ifndef USDT2
3213 DT_RETURN_MARK_DECL(NewString, jstring);
3214 #else /* USDT2 */
3215 DT_RETURN_MARK_DECL(NewString, jstring
3216 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3217 #endif /* USDT2 */
3218
3219 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3220 JNIWrapper("NewString");
3221 #ifndef USDT2
3222 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3223 #else /* USDT2 */
3224 HOTSPOT_JNI_NEWSTRING_ENTRY(
3225 env, (uint16_t *) unicodeChars, len);
3226 #endif /* USDT2 */
3227 jstring ret = NULL;
3228 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3229 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3230 ret = (jstring) JNIHandles::make_local(env, string);
3231 return ret;
3232 JNI_END
3233
3234
3235 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3236 JNIWrapper("GetStringLength");
3237 #ifndef USDT2
3238 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3239 #else /* USDT2 */
3240 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3241 env, string);
3242 #endif /* USDT2 */
3243 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3244 #ifndef USDT2
3245 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3246 #else /* USDT2 */
3247 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3248 ret);
3249 #endif /* USDT2 */
3250 return ret;
3251 JNI_END
3252
3253
3254 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3255 JNIEnv *env, jstring string, jboolean *isCopy))
3256 JNIWrapper("GetStringChars");
3257 #ifndef USDT2
3258 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3259 #else /* USDT2 */
3260 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3261 env, string, (uintptr_t *) isCopy);
3262 #endif /* USDT2 */
3263 //%note jni_5
3264 if (isCopy != NULL) {
3265 *isCopy = JNI_TRUE;
3266 }
3267 oop s = JNIHandles::resolve_non_null(string);
3268 int s_len = java_lang_String::length(s);
3269 typeArrayOop s_value = java_lang_String::value(s);
3270 int s_offset = java_lang_String::offset(s);
3271 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination
3272 if (s_len > 0) {
3273 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3274 }
3275 buf[s_len] = 0;
3276 #ifndef USDT2
3277 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3278 #else /* USDT2 */
3279 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3280 buf);
3281 #endif /* USDT2 */
3282 return buf;
3283 JNI_END
3284
3285
3286 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3287 JNIWrapper("ReleaseStringChars");
3288 #ifndef USDT2
3289 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3290 #else /* USDT2 */
3291 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3292 env, str, (uint16_t *) chars);
3293 #endif /* USDT2 */
3294 //%note jni_6
3295 if (chars != NULL) {
3296 // Since String objects are supposed to be immutable, don't copy any
3297 // new data back. A bad user will have to go after the char array.
3298 FreeHeap((void*) chars);
3299 }
3300 #ifndef USDT2
3301 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3302 #else /* USDT2 */
3303 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3304 );
3305 #endif /* USDT2 */
3306 JNI_END
3307
3308
3309 // UTF Interface
3310
3311 #ifndef USDT2
3312 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3313 #else /* USDT2 */
3314 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3315 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3316 #endif /* USDT2 */
3317
3318 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3319 JNIWrapper("NewStringUTF");
3320 #ifndef USDT2
3321 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3322 #else /* USDT2 */
3323 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3324 env, (char *) bytes);
3325 #endif /* USDT2 */
3326 jstring ret;
3327 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3328
3329 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3330 ret = (jstring) JNIHandles::make_local(env, result);
3331 return ret;
3332 JNI_END
3333
3334
3335 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3336 JNIWrapper("GetStringUTFLength");
3337 #ifndef USDT2
3338 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3339 #else /* USDT2 */
3340 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3341 env, string);
3342 #endif /* USDT2 */
3343 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3344 #ifndef USDT2
3345 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3346 #else /* USDT2 */
3347 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3348 ret);
3349 #endif /* USDT2 */
3350 return ret;
3351 JNI_END
3352
3353
3354 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3355 JNIWrapper("GetStringUTFChars");
3356 #ifndef USDT2
3357 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3358 #else /* USDT2 */
3359 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3360 env, string, (uintptr_t *) isCopy);
3361 #endif /* USDT2 */
3362 oop java_string = JNIHandles::resolve_non_null(string);
3363 size_t length = java_lang_String::utf8_length(java_string);
3364 char* result = AllocateHeap(length + 1, mtInternal);
3365 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3366 if (isCopy != NULL) *isCopy = JNI_TRUE;
3367 #ifndef USDT2
3368 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3369 #else /* USDT2 */
3370 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3371 result);
3372 #endif /* USDT2 */
3373 return result;
3374 JNI_END
3375
3376
3377 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3378 JNIWrapper("ReleaseStringUTFChars");
3379 #ifndef USDT2
3380 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3381 #else /* USDT2 */
3382 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3383 env, str, (char *) chars);
3384 #endif /* USDT2 */
3385 if (chars != NULL) {
3386 FreeHeap((char*) chars);
3387 }
3388 #ifndef USDT2
3389 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3390 #else /* USDT2 */
3391 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3392 );
3393 #endif /* USDT2 */
3394 JNI_END
3395
3396
3397 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3398 JNIWrapper("GetArrayLength");
3399 #ifndef USDT2
3400 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3401 #else /* USDT2 */
3402 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3403 env, array);
3404 #endif /* USDT2 */
3405 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3406 assert(a->is_array(), "must be array");
3407 jsize ret = a->length();
3408 #ifndef USDT2
3409 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3410 #else /* USDT2 */
3411 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3412 ret);
3413 #endif /* USDT2 */
3414 return ret;
3415 JNI_END
3416
3417
3418 //
3419 // Object Array Operations
3420 //
3421
3422 #ifndef USDT2
3423 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3424 #else /* USDT2 */
3425 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3426 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3427 #endif /* USDT2 */
3428
3429 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3430 JNIWrapper("NewObjectArray");
3431 #ifndef USDT2
3432 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3433 #else /* USDT2 */
3434 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3435 env, length, elementClass, initialElement);
3436 #endif /* USDT2 */
3437 jobjectArray ret = NULL;
3438 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3439 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3440 Klass* ako = ek()->array_klass(CHECK_NULL);
3441 KlassHandle ak = KlassHandle(THREAD, ako);
3442 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3443 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3444 oop initial_value = JNIHandles::resolve(initialElement);
3445 if (initial_value != NULL) { // array already initialized with NULL
3446 for (int index = 0; index < length; index++) {
3447 result->obj_at_put(index, initial_value);
3448 }
3449 }
3450 ret = (jobjectArray) JNIHandles::make_local(env, result);
3451 return ret;
3452 JNI_END
3453
3454 #ifndef USDT2
3455 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3456 #else /* USDT2 */
3457 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3458 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3459 #endif /* USDT2 */
3460
3461 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3462 JNIWrapper("GetObjectArrayElement");
3463 #ifndef USDT2
3464 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3465 #else /* USDT2 */
3466 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3467 env, array, index);
3468 #endif /* USDT2 */
3469 jobject ret = NULL;
3470 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3471 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3472 if (a->is_within_bounds(index)) {
3473 ret = JNIHandles::make_local(env, a->obj_at(index));
3474 return ret;
3475 } else {
3476 char buf[jintAsStringSize];
3477 sprintf(buf, "%d", index);
3478 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3479 }
3480 JNI_END
3481
3482 #ifndef USDT2
3483 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3484 #else /* USDT2 */
3485 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3486 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3487 #endif /* USDT2 */
3488
3489 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3490 JNIWrapper("SetObjectArrayElement");
3491 #ifndef USDT2
3492 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3493 #else /* USDT2 */
3494 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3495 env, array, index, value);
3496 #endif /* USDT2 */
3497 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3498
3499 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3500 oop v = JNIHandles::resolve(value);
3501 if (a->is_within_bounds(index)) {
3502 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3503 a->obj_at_put(index, v);
3504 } else {
3505 THROW(vmSymbols::java_lang_ArrayStoreException());
3506 }
3507 } else {
3508 char buf[jintAsStringSize];
3509 sprintf(buf, "%d", index);
3510 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3511 }
3512 JNI_END
3513
3514
3515 #ifndef USDT2
3516 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3517 \
3518 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3519 \
3520 JNI_ENTRY(Return, \
3521 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3522 JNIWrapper("New" XSTR(Result) "Array"); \
3523 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3524 Return ret = NULL;\
3525 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3526 \
3527 oop obj= oopFactory::Allocator(len, CHECK_0); \
3528 ret = (Return) JNIHandles::make_local(env, obj); \
3529 return ret;\
3530 JNI_END
3531
3532 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3533 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3534 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3535 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3536 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3537 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3538 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3539 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3540
3541 #else /* USDT2 */
3542
3543 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3544 ,EntryProbe,ReturnProbe) \
3545 \
3546 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3547 , ReturnProbe); \
3548 \
3549 JNI_ENTRY(Return, \
3550 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3551 JNIWrapper("New" XSTR(Result) "Array"); \
3552 EntryProbe; \
3553 Return ret = NULL;\
3554 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3555 \
3556 oop obj= oopFactory::Allocator(len, CHECK_0); \
3557 ret = (Return) JNIHandles::make_local(env, obj); \
3558 return ret;\
3559 JNI_END
3560
3561 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3562 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3563 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3564 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3565 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3566 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3567 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3568 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3569 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3570 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3571 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3572 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3573 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3574 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3575 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3576 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3577 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3578 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3579 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3580 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3581 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3582 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3583 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3584 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3585 #endif /* USDT2 */
3586
3587 // Return an address which will fault if the caller writes to it.
3588
3589 static char* get_bad_address() {
3590 static char* bad_address = NULL;
3591 if (bad_address == NULL) {
3592 size_t size = os::vm_allocation_granularity();
3593 bad_address = os::reserve_memory(size);
3594 if (bad_address != NULL) {
3595 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3596 /*is_committed*/false);
3597 }
3598 }
3599 return bad_address;
3600 }
3601
3602
3603 #ifndef USDT2
3604 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3605 \
3606 JNI_QUICK_ENTRY(ElementType*, \
3607 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3608 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3609 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3610 /* allocate an chunk of memory in c land */ \
3611 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3612 ElementType* result; \
3613 int len = a->length(); \
3614 if (len == 0) { \
3615 /* Empty array: legal but useless, can't return NULL. \
3616 * Return a pointer to something useless. \
3617 * Avoid asserts in typeArrayOop. */ \
3618 result = (ElementType*)get_bad_address(); \
3619 } else { \
3620 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3621 /* copy the array to the c chunk */ \
3622 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3623 } \
3624 if (isCopy) *isCopy = JNI_TRUE; \
3625 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3626 return result; \
3627 JNI_END
3628
3629 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3630 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3631 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3632 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3633 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3634 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3635 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3636 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3637
3638 #else /* USDT2 */
3639
3640 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3641 , EntryProbe, ReturnProbe) \
3642 \
3643 JNI_QUICK_ENTRY(ElementType*, \
3644 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3645 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3646 EntryProbe; \
3647 /* allocate an chunk of memory in c land */ \
3648 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3649 ElementType* result; \
3650 int len = a->length(); \
3651 if (len == 0) { \
3652 /* Empty array: legal but useless, can't return NULL. \
3653 * Return a pointer to something useless. \
3654 * Avoid asserts in typeArrayOop. */ \
3655 result = (ElementType*)get_bad_address(); \
3656 } else { \
3657 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3658 /* copy the array to the c chunk */ \
3659 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3660 } \
3661 if (isCopy) *isCopy = JNI_TRUE; \
3662 ReturnProbe; \
3663 return result; \
3664 JNI_END
3665
3666 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3667 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3668 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3669 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3670 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3671 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3672 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3673 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3674 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3675 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3676 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3677 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3678 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3679 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3680 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3681 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3682 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3683 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3684 // Float and double probes don't return value because dtrace doesn't currently support it
3685 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3686 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3687 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3688 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3689 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3690 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3691 #endif /* USDT2 */
3692
3693 #ifndef USDT2
3694 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3695 \
3696 JNI_QUICK_ENTRY(void, \
3697 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3698 ElementType *buf, jint mode)) \
3699 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3700 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3701 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3702 int len = a->length(); \
3703 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3704 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3705 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3706 } \
3707 if ((mode == 0) || (mode == JNI_ABORT)) { \
3708 FreeHeap(buf); \
3709 } \
3710 } \
3711 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3712 JNI_END
3713
3714 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3715 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3716 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3722
3723 #else /* USDT2 */
3724
3725 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3726 , EntryProbe, ReturnProbe);\
3727 \
3728 JNI_QUICK_ENTRY(void, \
3729 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3730 ElementType *buf, jint mode)) \
3731 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3732 EntryProbe; \
3733 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3734 int len = a->length(); \
3735 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3736 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3737 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3738 } \
3739 if ((mode == 0) || (mode == JNI_ABORT)) { \
3740 FreeHeap(buf); \
3741 } \
3742 } \
3743 ReturnProbe; \
3744 JNI_END
3745
3746 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3747 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3748 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3749 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3750 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3751 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3752 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3753 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3754 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3755 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3756 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3757 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3758 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3759 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3760 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3761 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3762 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3763 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3764 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3765 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3766 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3767 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3768 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3769 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3770 #endif /* USDT2 */
3771
3772 #ifndef USDT2
3773 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3774 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3775 \
3776 JNI_ENTRY(void, \
3777 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3778 jsize len, ElementType *buf)) \
3779 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3780 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3781 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3782 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3783 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3784 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3785 } else { \
3786 if (len > 0) { \
3787 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3788 memcpy((u_char*) buf, \
3789 (u_char*) src->Tag##_at_addr(start), \
3790 len << sc); \
3791 } \
3792 } \
3793 JNI_END
3794
3795 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3796 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3797 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3798 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3799 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3800 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3801 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3802 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3803
3804 #else /* USDT2 */
3805
3806 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3807 , EntryProbe, ReturnProbe); \
3808 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3809 , ReturnProbe); \
3810 \
3811 JNI_ENTRY(void, \
3812 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3813 jsize len, ElementType *buf)) \
3814 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3815 EntryProbe; \
3816 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3817 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3818 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3819 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3820 } else { \
3821 if (len > 0) { \
3822 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3823 memcpy((u_char*) buf, \
3824 (u_char*) src->Tag##_at_addr(start), \
3825 len << sc); \
3826 } \
3827 } \
3828 JNI_END
3829
3830 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3831 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3832 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3833 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3834 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3835 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3836 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3837 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3838 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3839 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3840 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3841 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3842 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3843 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3844 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3845 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3846 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3847 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3848 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3849 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3850 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3851 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3852 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3853 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3854 #endif /* USDT2 */
3855
3856 #ifndef USDT2
3857 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3858 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3859 \
3860 JNI_ENTRY(void, \
3861 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3862 jsize len, const ElementType *buf)) \
3863 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3864 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3865 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3866 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3867 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3868 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3869 } else { \
3870 if (len > 0) { \
3871 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3872 memcpy((u_char*) dst->Tag##_at_addr(start), \
3873 (u_char*) buf, \
3874 len << sc); \
3875 } \
3876 } \
3877 JNI_END
3878
3879 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3880 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3881 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3882 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3883 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3884 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3885 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3886 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3887
3888 #else /* USDT2 */
3889
3890 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3891 , EntryProbe, ReturnProbe); \
3892 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3893 ,ReturnProbe); \
3894 \
3895 JNI_ENTRY(void, \
3896 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3897 jsize len, const ElementType *buf)) \
3898 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3899 EntryProbe; \
3900 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3901 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3902 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3903 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3904 } else { \
3905 if (len > 0) { \
3906 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3907 memcpy((u_char*) dst->Tag##_at_addr(start), \
3908 (u_char*) buf, \
3909 len << sc); \
3910 } \
3911 } \
3912 JNI_END
3913
3914 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3915 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3916 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3917 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3918 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3919 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3920 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3921 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3922 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3923 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3924 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3925 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3926 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3927 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3928 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3929 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3930 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3931 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3932 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3933 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3934 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3935 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3936 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3937 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3938 #endif /* USDT2 */
3939
3940
3941 //
3942 // Interception of natives
3943 //
3944
3945 // The RegisterNatives call being attempted tried to register with a method that
3946 // is not native. Ask JVM TI what prefixes have been specified. Then check
3947 // to see if the native method is now wrapped with the prefixes. See the
3948 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3949 static Method* find_prefixed_native(KlassHandle k,
3950 Symbol* name, Symbol* signature, TRAPS) {
3951 #if INCLUDE_JVMTI
3952 ResourceMark rm(THREAD);
3953 Method* method;
3954 int name_len = name->utf8_length();
3955 char* name_str = name->as_utf8();
3956 int prefix_count;
3957 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3958 for (int i = 0; i < prefix_count; i++) {
3959 char* prefix = prefixes[i];
3960 int prefix_len = (int)strlen(prefix);
3961
3962 // try adding this prefix to the method name and see if it matches another method name
3963 int trial_len = name_len + prefix_len;
3964 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3965 strcpy(trial_name_str, prefix);
3966 strcat(trial_name_str, name_str);
3967 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3968 if (trial_name == NULL) {
3969 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3970 }
3971 method = k()->lookup_method(trial_name, signature);
3972 if (method == NULL) {
3973 continue; // signature doesn't match, try the next prefix
3974 }
3975 if (method->is_native()) {
3976 method->set_is_prefixed_native();
3977 return method; // wahoo, we found a prefixed version of the method, return it
3978 }
3979 // found as non-native, so prefix is good, add it, probably just need more prefixes
3980 name_len = trial_len;
3981 name_str = trial_name_str;
3982 }
3983 #endif // INCLUDE_JVMTI
3984 return NULL; // not found
3985 }
3986
3987 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3988 Method* method = k()->lookup_method(name, signature);
3989 if (method == NULL) {
3990 ResourceMark rm;
3991 stringStream st;
3992 st.print("Method %s name or signature does not match",
3993 Method::name_and_sig_as_C_string(k(), name, signature));
3994 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3995 }
3996 if (!method->is_native()) {
3997 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3998 method = find_prefixed_native(k, name, signature, THREAD);
3999 if (method == NULL) {
4000 ResourceMark rm;
4001 stringStream st;
4002 st.print("Method %s is not declared as native",
4003 Method::name_and_sig_as_C_string(k(), name, signature));
4004 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4005 }
4006 }
4007
4008 if (entry != NULL) {
4009 method->set_native_function(entry,
4010 Method::native_bind_event_is_interesting);
4011 } else {
4012 method->clear_native_function();
4013 }
4014 if (PrintJNIResolving) {
4015 ResourceMark rm(THREAD);
4016 tty->print_cr("[Registering JNI native method %s.%s]",
4017 method->method_holder()->external_name(),
4018 method->name()->as_C_string());
4019 }
4020 return true;
4021 }
4022
4023 #ifndef USDT2
4024 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4025 #else /* USDT2 */
4026 DT_RETURN_MARK_DECL(RegisterNatives, jint
4027 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4028 #endif /* USDT2 */
4029
4030 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4031 const JNINativeMethod *methods,
4032 jint nMethods))
4033 JNIWrapper("RegisterNatives");
4034 #ifndef USDT2
4035 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4036 #else /* USDT2 */
4037 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4038 env, clazz, (void *) methods, nMethods);
4039 #endif /* USDT2 */
4040 jint ret = 0;
4041 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4042
4043 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4044
4045 for (int index = 0; index < nMethods; index++) {
4046 const char* meth_name = methods[index].name;
4047 const char* meth_sig = methods[index].signature;
4048 int meth_name_len = (int)strlen(meth_name);
4049
4050 // The class should have been loaded (we have an instance of the class
4051 // passed in) so the method and signature should already be in the symbol
4052 // table. If they're not there, the method doesn't exist.
4053 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4054 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4055
4056 if (name == NULL || signature == NULL) {
4057 ResourceMark rm;
4058 stringStream st;
4059 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4060 // Must return negative value on failure
4061 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4062 }
4063
4064 bool res = register_native(h_k, name, signature,
4065 (address) methods[index].fnPtr, THREAD);
4066 if (!res) {
4067 ret = -1;
4068 break;
4069 }
4070 }
4071 return ret;
4072 JNI_END
4073
4074
4075 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4076 JNIWrapper("UnregisterNatives");
4077 #ifndef USDT2
4078 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4079 #else /* USDT2 */
4080 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4081 env, clazz);
4082 #endif /* USDT2 */
4083 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4084 //%note jni_2
4085 if (k->oop_is_instance()) {
4086 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4087 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4088 if (m->is_native()) {
4089 m->clear_native_function();
4090 m->set_signature_handler(NULL);
4091 }
4092 }
4093 }
4094 #ifndef USDT2
4095 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4096 #else /* USDT2 */
4097 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4098 0);
4099 #endif /* USDT2 */
4100 return 0;
4101 JNI_END
4102
4103 //
4104 // Monitor functions
4105 //
4106
4107 #ifndef USDT2
4108 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4109 #else /* USDT2 */
4110 DT_RETURN_MARK_DECL(MonitorEnter, jint
4111 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4112 #endif /* USDT2 */
4113
4114 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4115 #ifndef USDT2
4116 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4117 #else /* USDT2 */
4118 HOTSPOT_JNI_MONITORENTER_ENTRY(
4119 env, jobj);
4120 #endif /* USDT2 */
4121 jint ret = JNI_ERR;
4122 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4123
4124 // If the object is null, we can't do anything with it
4125 if (jobj == NULL) {
4126 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4127 }
4128
4129 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4130 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4131 ret = JNI_OK;
4132 return ret;
4133 JNI_END
4134
4135 #ifndef USDT2
4136 DT_RETURN_MARK_DECL(MonitorExit, jint);
4137 #else /* USDT2 */
4138 DT_RETURN_MARK_DECL(MonitorExit, jint
4139 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4140 #endif /* USDT2 */
4141
4142 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4143 #ifndef USDT2
4144 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4145 #else /* USDT2 */
4146 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4147 env, jobj);
4148 #endif /* USDT2 */
4149 jint ret = JNI_ERR;
4150 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4151
4152 // Don't do anything with a null object
4153 if (jobj == NULL) {
4154 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4155 }
4156
4157 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4158 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4159
4160 ret = JNI_OK;
4161 return ret;
4162 JNI_END
4163
4164 //
4165 // Extensions
4166 //
4167
4168 #ifndef USDT2
4169 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4170 #else /* USDT2 */
4171 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4172 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4173 #endif /* USDT2 */
4174
4175 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4176 JNIWrapper("GetStringRegion");
4177 #ifndef USDT2
4178 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4179 #else /* USDT2 */
4180 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4181 env, string, start, len, buf);
4182 #endif /* USDT2 */
4183 DT_VOID_RETURN_MARK(GetStringRegion);
4184 oop s = JNIHandles::resolve_non_null(string);
4185 int s_len = java_lang_String::length(s);
4186 if (start < 0 || len < 0 || start + len > s_len) {
4187 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4188 } else {
4189 if (len > 0) {
4190 int s_offset = java_lang_String::offset(s);
4191 typeArrayOop s_value = java_lang_String::value(s);
4192 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4193 }
4194 }
4195 JNI_END
4196
4197 #ifndef USDT2
4198 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4199 #else /* USDT2 */
4200 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4201 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4202 #endif /* USDT2 */
4203
4204 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4205 JNIWrapper("GetStringUTFRegion");
4206 #ifndef USDT2
4207 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4208 #else /* USDT2 */
4209 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4210 env, string, start, len, buf);
4211 #endif /* USDT2 */
4212 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4213 oop s = JNIHandles::resolve_non_null(string);
4214 int s_len = java_lang_String::length(s);
4215 if (start < 0 || len < 0 || start + len > s_len) {
4216 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4217 } else {
4218 //%note jni_7
4219 if (len > 0) {
4220 ResourceMark rm(THREAD);
4221 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4222 int utf_len = (int)strlen(utf_region);
4223 memcpy(buf, utf_region, utf_len);
4224 buf[utf_len] = 0;
4225 } else {
4226 // JDK null-terminates the buffer even in len is zero
4227 if (buf != NULL) {
4228 buf[0] = 0;
4229 }
4230 }
4231 }
4232 JNI_END
4233
4234
4235 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4236 JNIWrapper("GetPrimitiveArrayCritical");
4237 #ifndef USDT2
4238 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4239 #else /* USDT2 */
4240 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4241 env, array, (uintptr_t *) isCopy);
4242 #endif /* USDT2 */
4243 GC_locker::lock_critical(thread);
4244 if (isCopy != NULL) {
4245 *isCopy = JNI_FALSE;
4246 }
4247 oop a = JNIHandles::resolve_non_null(array);
4248 assert(a->is_array(), "just checking");
4249 BasicType type;
4250 if (a->is_objArray()) {
4251 type = T_OBJECT;
4252 } else {
4253 type = TypeArrayKlass::cast(a->klass())->element_type();
4254 }
4255 void* ret = arrayOop(a)->base(type);
4256 #ifndef USDT2
4257 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4258 #else /* USDT2 */
4259 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4260 ret);
4261 #endif /* USDT2 */
4262 return ret;
4263 JNI_END
4264
4265
4266 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4267 JNIWrapper("ReleasePrimitiveArrayCritical");
4268 #ifndef USDT2
4269 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4270 #else /* USDT2 */
4271 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4272 env, array, carray, mode);
4273 #endif /* USDT2 */
4274 // The array, carray and mode arguments are ignored
4275 GC_locker::unlock_critical(thread);
4276 #ifndef USDT2
4277 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4278 #else /* USDT2 */
4279 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4280 );
4281 #endif /* USDT2 */
4282 JNI_END
4283
4284
4285 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4286 JNIWrapper("GetStringCritical");
4287 #ifndef USDT2
4288 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4289 #else /* USDT2 */
4290 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4291 env, string, (uintptr_t *) isCopy);
4292 #endif /* USDT2 */
4293 GC_locker::lock_critical(thread);
4294 if (isCopy != NULL) {
4295 *isCopy = JNI_FALSE;
4296 }
4297 oop s = JNIHandles::resolve_non_null(string);
4298 int s_len = java_lang_String::length(s);
4299 typeArrayOop s_value = java_lang_String::value(s);
4300 int s_offset = java_lang_String::offset(s);
4301 const jchar* ret;
4302 if (s_len > 0) {
4303 ret = s_value->char_at_addr(s_offset);
4304 } else {
4305 ret = (jchar*) s_value->base(T_CHAR);
4306 }
4307 #ifndef USDT2
4308 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4309 #else /* USDT2 */
4310 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4311 (uint16_t *) ret);
4312 #endif /* USDT2 */
4313 return ret;
4314 JNI_END
4315
4316
4317 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4318 JNIWrapper("ReleaseStringCritical");
4319 #ifndef USDT2
4320 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4321 #else /* USDT2 */
4322 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4323 env, str, (uint16_t *) chars);
4324 #endif /* USDT2 */
4325 // The str and chars arguments are ignored
4326 GC_locker::unlock_critical(thread);
4327 #ifndef USDT2
4328 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4329 #else /* USDT2 */
4330 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4331 );
4332 #endif /* USDT2 */
4333 JNI_END
4334
4335
4336 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4337 JNIWrapper("jni_NewWeakGlobalRef");
4338 #ifndef USDT2
4339 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4340 #else /* USDT2 */
4341 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4342 env, ref);
4343 #endif /* USDT2 */
4344 Handle ref_handle(thread, JNIHandles::resolve(ref));
4345 jweak ret = JNIHandles::make_weak_global(ref_handle);
4346 #ifndef USDT2
4347 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4348 #else /* USDT2 */
4349 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4350 ret);
4351 #endif /* USDT2 */
4352 return ret;
4353 JNI_END
4354
4355 // Must be JNI_ENTRY (with HandleMark)
4356 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4357 JNIWrapper("jni_DeleteWeakGlobalRef");
4358 #ifndef USDT2
4359 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4360 #else /* USDT2 */
4361 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4362 env, ref);
4363 #endif /* USDT2 */
4364 JNIHandles::destroy_weak_global(ref);
4365 #ifndef USDT2
4366 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4367 #else /* USDT2 */
4368 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4369 );
4370 #endif /* USDT2 */
4371 JNI_END
4372
4373
4374 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4375 JNIWrapper("jni_ExceptionCheck");
4376 #ifndef USDT2
4377 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4378 #else /* USDT2 */
4379 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4380 env);
4381 #endif /* USDT2 */
4382 jni_check_async_exceptions(thread);
4383 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4384 #ifndef USDT2
4385 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4386 #else /* USDT2 */
4387 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4388 ret);
4389 #endif /* USDT2 */
4390 return ret;
4391 JNI_END
4392
4393
4394 // Initialization state for three routines below relating to
4395 // java.nio.DirectBuffers
4396 static jint directBufferSupportInitializeStarted = 0;
4397 static volatile jint directBufferSupportInitializeEnded = 0;
4398 static volatile jint directBufferSupportInitializeFailed = 0;
4399 static jclass bufferClass = NULL;
4400 static jclass directBufferClass = NULL;
4401 static jclass directByteBufferClass = NULL;
4402 static jmethodID directByteBufferConstructor = NULL;
4403 static jfieldID directBufferAddressField = NULL;
4404 static jfieldID bufferCapacityField = NULL;
4405
4406 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4407 Handle loader; // null (bootstrap) loader
4408 Handle protection_domain; // null protection domain
4409
4410 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4411 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4412
4413 if (TraceClassResolution && result != NULL) {
4414 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4415 }
4416 return result;
4417 }
4418
4419 // These lookups are done with the NULL (bootstrap) ClassLoader to
4420 // circumvent any security checks that would be done by jni_FindClass.
4421 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4422 {
4423 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4424 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4425 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4426 return true;
4427 }
4428 JNI_END
4429
4430
4431 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4432 if (directBufferSupportInitializeFailed) {
4433 return false;
4434 }
4435
4436 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4437 if (!lookupDirectBufferClasses(env)) {
4438 directBufferSupportInitializeFailed = 1;
4439 return false;
4440 }
4441
4442 // Make global references for these
4443 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4444 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4445 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4446
4447 // Get needed field and method IDs
4448 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4449 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4450 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4451
4452 if ((directByteBufferConstructor == NULL) ||
4453 (directBufferAddressField == NULL) ||
4454 (bufferCapacityField == NULL)) {
4455 directBufferSupportInitializeFailed = 1;
4456 return false;
4457 }
4458
4459 directBufferSupportInitializeEnded = 1;
4460 } else {
4461 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4462 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4463 // os::sleep which requires the VM state transition. On other platforms, it
4464 // is not necessary. The following call to change the VM state is purposely
4465 // put inside the loop to avoid potential deadlock when multiple threads
4466 // try to call this method. See 6791815 for more details.
4467 ThreadInVMfromNative tivn(thread);
4468 os::yield_all();
4469 }
4470 }
4471
4472 return !directBufferSupportInitializeFailed;
4473 }
4474
4475 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4476 {
4477 // thread_from_jni_environment() will block if VM is gone.
4478 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4479
4480 JNIWrapper("jni_NewDirectByteBuffer");
4481 #ifndef USDT2
4482 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4483 #else /* USDT2 */
4484 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4485 env, address, capacity);
4486 #endif /* USDT2 */
4487
4488 if (!directBufferSupportInitializeEnded) {
4489 if (!initializeDirectBufferSupport(env, thread)) {
4490 #ifndef USDT2
4491 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4492 #else /* USDT2 */
4493 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4494 NULL);
4495 #endif /* USDT2 */
4496 return NULL;
4497 }
4498 }
4499
4500 // Being paranoid about accidental sign extension on address
4501 jlong addr = (jlong) ((uintptr_t) address);
4502 // NOTE that package-private DirectByteBuffer constructor currently
4503 // takes int capacity
4504 jint cap = (jint) capacity;
4505 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4506 #ifndef USDT2
4507 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4508 #else /* USDT2 */
4509 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4510 ret);
4511 #endif /* USDT2 */
4512 return ret;
4513 }
4514
4515 #ifndef USDT2
4516 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4517 #else /* USDT2 */
4518 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4519 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4520 #endif /* USDT2 */
4521
4522 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4523 {
4524 // thread_from_jni_environment() will block if VM is gone.
4525 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4526
4527 JNIWrapper("jni_GetDirectBufferAddress");
4528 #ifndef USDT2
4529 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4530 #else /* USDT2 */
4531 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4532 env, buf);
4533 #endif /* USDT2 */
4534 void* ret = NULL;
4535 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4536
4537 if (!directBufferSupportInitializeEnded) {
4538 if (!initializeDirectBufferSupport(env, thread)) {
4539 return 0;
4540 }
4541 }
4542
4543 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4544 return 0;
4545 }
4546
4547 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4548 return ret;
4549 }
4550
4551 #ifndef USDT2
4552 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4553 #else /* USDT2 */
4554 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4555 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4556 #endif /* USDT2 */
4557
4558 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4559 {
4560 // thread_from_jni_environment() will block if VM is gone.
4561 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4562
4563 JNIWrapper("jni_GetDirectBufferCapacity");
4564 #ifndef USDT2
4565 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4566 #else /* USDT2 */
4567 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4568 env, buf);
4569 #endif /* USDT2 */
4570 jlong ret = -1;
4571 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4572
4573 if (!directBufferSupportInitializeEnded) {
4574 if (!initializeDirectBufferSupport(env, thread)) {
4575 ret = 0;
4576 return ret;
4577 }
4578 }
4579
4580 if (buf == NULL) {
4581 return -1;
4582 }
4583
4584 if (!env->IsInstanceOf(buf, directBufferClass)) {
4585 return -1;
4586 }
4587
4588 // NOTE that capacity is currently an int in the implementation
4589 ret = env->GetIntField(buf, bufferCapacityField);
4590 return ret;
4591 }
4592
4593
4594 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4595 JNIWrapper("GetVersion");
4596 #ifndef USDT2
4597 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4598 #else /* USDT2 */
4599 HOTSPOT_JNI_GETVERSION_ENTRY(
4600 env);
4601 #endif /* USDT2 */
4602 #ifndef USDT2
4603 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4604 #else /* USDT2 */
4605 HOTSPOT_JNI_GETVERSION_RETURN(
4606 CurrentVersion);
4607 #endif /* USDT2 */
4608 return CurrentVersion;
4609 JNI_END
4610
4611 extern struct JavaVM_ main_vm;
4612
4613 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4614 JNIWrapper("jni_GetJavaVM");
4615 #ifndef USDT2
4616 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4617 #else /* USDT2 */
4618 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4619 env, (void **) vm);
4620 #endif /* USDT2 */
4621 *vm = (JavaVM *)(&main_vm);
4622 #ifndef USDT2
4623 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4624 #else /* USDT2 */
4625 HOTSPOT_JNI_GETJAVAVM_RETURN(
4626 JNI_OK);
4627 #endif /* USDT2 */
4628 return JNI_OK;
4629 JNI_END
4630
4631 // Structure containing all jni functions
4632 struct JNINativeInterface_ jni_NativeInterface = {
4633 NULL,
4634 NULL,
4635 NULL,
4636
4637 NULL,
4638
4639 jni_GetVersion,
4640
4641 jni_DefineClass,
4642 jni_FindClass,
4643
4644 jni_FromReflectedMethod,
4645 jni_FromReflectedField,
4646
4647 jni_ToReflectedMethod,
4648
4649 jni_GetSuperclass,
4650 jni_IsAssignableFrom,
4651
4652 jni_ToReflectedField,
4653
4654 jni_Throw,
4655 jni_ThrowNew,
4656 jni_ExceptionOccurred,
4657 jni_ExceptionDescribe,
4658 jni_ExceptionClear,
4659 jni_FatalError,
4660
4661 jni_PushLocalFrame,
4662 jni_PopLocalFrame,
4663
4664 jni_NewGlobalRef,
4665 jni_DeleteGlobalRef,
4666 jni_DeleteLocalRef,
4667 jni_IsSameObject,
4668
4669 jni_NewLocalRef,
4670 jni_EnsureLocalCapacity,
4671
4672 jni_AllocObject,
4673 jni_NewObject,
4674 jni_NewObjectV,
4675 jni_NewObjectA,
4676
4677 jni_GetObjectClass,
4678 jni_IsInstanceOf,
4679
4680 jni_GetMethodID,
4681
4682 jni_CallObjectMethod,
4683 jni_CallObjectMethodV,
4684 jni_CallObjectMethodA,
4685 jni_CallBooleanMethod,
4686 jni_CallBooleanMethodV,
4687 jni_CallBooleanMethodA,
4688 jni_CallByteMethod,
4689 jni_CallByteMethodV,
4690 jni_CallByteMethodA,
4691 jni_CallCharMethod,
4692 jni_CallCharMethodV,
4693 jni_CallCharMethodA,
4694 jni_CallShortMethod,
4695 jni_CallShortMethodV,
4696 jni_CallShortMethodA,
4697 jni_CallIntMethod,
4698 jni_CallIntMethodV,
4699 jni_CallIntMethodA,
4700 jni_CallLongMethod,
4701 jni_CallLongMethodV,
4702 jni_CallLongMethodA,
4703 jni_CallFloatMethod,
4704 jni_CallFloatMethodV,
4705 jni_CallFloatMethodA,
4706 jni_CallDoubleMethod,
4707 jni_CallDoubleMethodV,
4708 jni_CallDoubleMethodA,
4709 jni_CallVoidMethod,
4710 jni_CallVoidMethodV,
4711 jni_CallVoidMethodA,
4712
4713 jni_CallNonvirtualObjectMethod,
4714 jni_CallNonvirtualObjectMethodV,
4715 jni_CallNonvirtualObjectMethodA,
4716 jni_CallNonvirtualBooleanMethod,
4717 jni_CallNonvirtualBooleanMethodV,
4718 jni_CallNonvirtualBooleanMethodA,
4719 jni_CallNonvirtualByteMethod,
4720 jni_CallNonvirtualByteMethodV,
4721 jni_CallNonvirtualByteMethodA,
4722 jni_CallNonvirtualCharMethod,
4723 jni_CallNonvirtualCharMethodV,
4724 jni_CallNonvirtualCharMethodA,
4725 jni_CallNonvirtualShortMethod,
4726 jni_CallNonvirtualShortMethodV,
4727 jni_CallNonvirtualShortMethodA,
4728 jni_CallNonvirtualIntMethod,
4729 jni_CallNonvirtualIntMethodV,
4730 jni_CallNonvirtualIntMethodA,
4731 jni_CallNonvirtualLongMethod,
4732 jni_CallNonvirtualLongMethodV,
4733 jni_CallNonvirtualLongMethodA,
4734 jni_CallNonvirtualFloatMethod,
4735 jni_CallNonvirtualFloatMethodV,
4736 jni_CallNonvirtualFloatMethodA,
4737 jni_CallNonvirtualDoubleMethod,
4738 jni_CallNonvirtualDoubleMethodV,
4739 jni_CallNonvirtualDoubleMethodA,
4740 jni_CallNonvirtualVoidMethod,
4741 jni_CallNonvirtualVoidMethodV,
4742 jni_CallNonvirtualVoidMethodA,
4743
4744 jni_GetFieldID,
4745
4746 jni_GetObjectField,
4747 jni_GetBooleanField,
4748 jni_GetByteField,
4749 jni_GetCharField,
4750 jni_GetShortField,
4751 jni_GetIntField,
4752 jni_GetLongField,
4753 jni_GetFloatField,
4754 jni_GetDoubleField,
4755
4756 jni_SetObjectField,
4757 jni_SetBooleanField,
4758 jni_SetByteField,
4759 jni_SetCharField,
4760 jni_SetShortField,
4761 jni_SetIntField,
4762 jni_SetLongField,
4763 jni_SetFloatField,
4764 jni_SetDoubleField,
4765
4766 jni_GetStaticMethodID,
4767
4768 jni_CallStaticObjectMethod,
4769 jni_CallStaticObjectMethodV,
4770 jni_CallStaticObjectMethodA,
4771 jni_CallStaticBooleanMethod,
4772 jni_CallStaticBooleanMethodV,
4773 jni_CallStaticBooleanMethodA,
4774 jni_CallStaticByteMethod,
4775 jni_CallStaticByteMethodV,
4776 jni_CallStaticByteMethodA,
4777 jni_CallStaticCharMethod,
4778 jni_CallStaticCharMethodV,
4779 jni_CallStaticCharMethodA,
4780 jni_CallStaticShortMethod,
4781 jni_CallStaticShortMethodV,
4782 jni_CallStaticShortMethodA,
4783 jni_CallStaticIntMethod,
4784 jni_CallStaticIntMethodV,
4785 jni_CallStaticIntMethodA,
4786 jni_CallStaticLongMethod,
4787 jni_CallStaticLongMethodV,
4788 jni_CallStaticLongMethodA,
4789 jni_CallStaticFloatMethod,
4790 jni_CallStaticFloatMethodV,
4791 jni_CallStaticFloatMethodA,
4792 jni_CallStaticDoubleMethod,
4793 jni_CallStaticDoubleMethodV,
4794 jni_CallStaticDoubleMethodA,
4795 jni_CallStaticVoidMethod,
4796 jni_CallStaticVoidMethodV,
4797 jni_CallStaticVoidMethodA,
4798
4799 jni_GetStaticFieldID,
4800
4801 jni_GetStaticObjectField,
4802 jni_GetStaticBooleanField,
4803 jni_GetStaticByteField,
4804 jni_GetStaticCharField,
4805 jni_GetStaticShortField,
4806 jni_GetStaticIntField,
4807 jni_GetStaticLongField,
4808 jni_GetStaticFloatField,
4809 jni_GetStaticDoubleField,
4810
4811 jni_SetStaticObjectField,
4812 jni_SetStaticBooleanField,
4813 jni_SetStaticByteField,
4814 jni_SetStaticCharField,
4815 jni_SetStaticShortField,
4816 jni_SetStaticIntField,
4817 jni_SetStaticLongField,
4818 jni_SetStaticFloatField,
4819 jni_SetStaticDoubleField,
4820
4821 jni_NewString,
4822 jni_GetStringLength,
4823 jni_GetStringChars,
4824 jni_ReleaseStringChars,
4825
4826 jni_NewStringUTF,
4827 jni_GetStringUTFLength,
4828 jni_GetStringUTFChars,
4829 jni_ReleaseStringUTFChars,
4830
4831 jni_GetArrayLength,
4832
4833 jni_NewObjectArray,
4834 jni_GetObjectArrayElement,
4835 jni_SetObjectArrayElement,
4836
4837 jni_NewBooleanArray,
4838 jni_NewByteArray,
4839 jni_NewCharArray,
4840 jni_NewShortArray,
4841 jni_NewIntArray,
4842 jni_NewLongArray,
4843 jni_NewFloatArray,
4844 jni_NewDoubleArray,
4845
4846 jni_GetBooleanArrayElements,
4847 jni_GetByteArrayElements,
4848 jni_GetCharArrayElements,
4849 jni_GetShortArrayElements,
4850 jni_GetIntArrayElements,
4851 jni_GetLongArrayElements,
4852 jni_GetFloatArrayElements,
4853 jni_GetDoubleArrayElements,
4854
4855 jni_ReleaseBooleanArrayElements,
4856 jni_ReleaseByteArrayElements,
4857 jni_ReleaseCharArrayElements,
4858 jni_ReleaseShortArrayElements,
4859 jni_ReleaseIntArrayElements,
4860 jni_ReleaseLongArrayElements,
4861 jni_ReleaseFloatArrayElements,
4862 jni_ReleaseDoubleArrayElements,
4863
4864 jni_GetBooleanArrayRegion,
4865 jni_GetByteArrayRegion,
4866 jni_GetCharArrayRegion,
4867 jni_GetShortArrayRegion,
4868 jni_GetIntArrayRegion,
4869 jni_GetLongArrayRegion,
4870 jni_GetFloatArrayRegion,
4871 jni_GetDoubleArrayRegion,
4872
4873 jni_SetBooleanArrayRegion,
4874 jni_SetByteArrayRegion,
4875 jni_SetCharArrayRegion,
4876 jni_SetShortArrayRegion,
4877 jni_SetIntArrayRegion,
4878 jni_SetLongArrayRegion,
4879 jni_SetFloatArrayRegion,
4880 jni_SetDoubleArrayRegion,
4881
4882 jni_RegisterNatives,
4883 jni_UnregisterNatives,
4884
4885 jni_MonitorEnter,
4886 jni_MonitorExit,
4887
4888 jni_GetJavaVM,
4889
4890 jni_GetStringRegion,
4891 jni_GetStringUTFRegion,
4892
4893 jni_GetPrimitiveArrayCritical,
4894 jni_ReleasePrimitiveArrayCritical,
4895
4896 jni_GetStringCritical,
4897 jni_ReleaseStringCritical,
4898
4899 jni_NewWeakGlobalRef,
4900 jni_DeleteWeakGlobalRef,
4901
4902 jni_ExceptionCheck,
4903
4904 jni_NewDirectByteBuffer,
4905 jni_GetDirectBufferAddress,
4906 jni_GetDirectBufferCapacity,
4907
4908 // New 1_6 features
4909
4910 jni_GetObjectRefType
4911 };
4912
4913
4914 // For jvmti use to modify jni function table.
4915 // Java threads in native contiues to run until it is transitioned
4916 // to VM at safepoint. Before the transition or before it is blocked
4917 // for safepoint it may access jni function table. VM could crash if
4918 // any java thread access the jni function table in the middle of memcpy.
4919 // To avoid this each function pointers are copied automically.
4920 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4921 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4922 intptr_t *a = (intptr_t *) jni_functions();
4923 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4924 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4925 Atomic::store_ptr(*b++, a++);
4926 }
4927 }
4928
4929 void quicken_jni_functions() {
4930 // Replace Get<Primitive>Field with fast versions
4931 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4932 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4933 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4934 // windows x86 currently needs SEH wrapper and the gain of the fast
4935 // versions currently isn't certain for server vm on uniprocessor.
4936 && os::is_MP()
4937 #endif
4938 ) {
4939 address func;
4940 func = JNI_FastGetField::generate_fast_get_boolean_field();
4941 if (func != (address)-1) {
4942 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4943 }
4944 func = JNI_FastGetField::generate_fast_get_byte_field();
4945 if (func != (address)-1) {
4946 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4947 }
4948 func = JNI_FastGetField::generate_fast_get_char_field();
4949 if (func != (address)-1) {
4950 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4951 }
4952 func = JNI_FastGetField::generate_fast_get_short_field();
4953 if (func != (address)-1) {
4954 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4955 }
4956 func = JNI_FastGetField::generate_fast_get_int_field();
4957 if (func != (address)-1) {
4958 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4959 }
4960 func = JNI_FastGetField::generate_fast_get_long_field();
4961 if (func != (address)-1) {
4962 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4963 }
4964 func = JNI_FastGetField::generate_fast_get_float_field();
4965 if (func != (address)-1) {
4966 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4967 }
4968 func = JNI_FastGetField::generate_fast_get_double_field();
4969 if (func != (address)-1) {
4970 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4971 }
4972 }
4973 }
4974
4975 // Returns the function structure
4976 struct JNINativeInterface_* jni_functions() {
4977 #if INCLUDE_JNI_CHECK
4978 if (CheckJNICalls) return jni_functions_check();
4979 #endif // INCLUDE_JNI_CHECK
4980 return &jni_NativeInterface;
4981 }
4982
4983 // Returns the function structure
4984 struct JNINativeInterface_* jni_functions_nocheck() {
4985 return &jni_NativeInterface;
4986 }
4987
4988
4989 // Invocation API
4990
4991
4992 // Forward declaration
4993 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4994
4995 // Global invocation API vars
4996 volatile jint vm_created = 0;
4997 // Indicate whether it is safe to recreate VM
4998 volatile jint safe_to_recreate_vm = 1;
4999 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5000
5001
5002 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
5003 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5004
5005 #ifndef USDT2
5006 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5007 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5008 #else /* USDT2 */
5009 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5010 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5011 #endif /* USDT2 */
5012
5013 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5014 #ifndef USDT2
5015 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5016 #else /* USDT2 */
5017 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5018 args_);
5019 #endif /* USDT2 */
5020 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5021 jint ret = JNI_ERR;
5022 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5023
5024 if (Threads::is_supported_jni_version(args->version)) {
5025 ret = JNI_OK;
5026 }
5027 // 1.1 style no longer supported in hotspot.
5028 // According the JNI spec, we should update args->version on return.
5029 // We also use the structure to communicate with launcher about default
5030 // stack size.
5031 if (args->version == JNI_VERSION_1_1) {
5032 args->version = JNI_VERSION_1_2;
5033 // javaStackSize is int in arguments structure
5034 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5035 args->javaStackSize = (jint)(ThreadStackSize * K);
5036 }
5037 return ret;
5038 }
5039
5040 #ifndef PRODUCT
5041
5042 #include "gc_implementation/g1/g1PreserveMarkQueue.hpp"
5043 #include "gc_interface/collectedHeap.hpp"
5044 #include "utilities/quickSort.hpp"
5045 #if INCLUDE_VM_STRUCTS
5046 #include "runtime/vmStructs.hpp"
5047 #endif
5048
5049 #define run_unit_test(unit_test_function_call) \
5050 tty->print_cr("Running test: " #unit_test_function_call); \
5051 unit_test_function_call
5052
5053 void execute_internal_vm_tests() {
5054 if (ExecuteInternalVMTests) {
5055 tty->print_cr("Running internal VM tests");
5056 run_unit_test(arrayOopDesc::test_max_array_length());
5057 run_unit_test(CollectedHeap::test_is_in());
5058 run_unit_test(QuickSort::test_quick_sort());
5059 run_unit_test(AltHashing::test_alt_hash());
5060 run_unit_test(g1PreserveMarkChunkTests());
5061 run_unit_test(g1PreserveMarkQueueTests());
5062 #if INCLUDE_VM_STRUCTS
5063 run_unit_test(VMStructs::test());
5064 #endif
5065 tty->print_cr("All internal VM tests passed");
5066 }
5067 }
5068
5069 #undef run_unit_test
5070
5071 #endif
5072
5073 #ifndef USDT2
5074 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5075 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5076 #else /* USDT2 */
5077 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5078 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5079 #endif /* USDT2 */
5080
5081 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5082 #ifndef USDT2
5083 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5084 #else /* USDT2 */
5085 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5086 (void **) vm, penv, args);
5087 #endif /* USDT2 */
5088
5089 jint result = JNI_ERR;
5090 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5091
5092 // We're about to use Atomic::xchg for synchronization. Some Zero
5093 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5094 // but __sync_lock_test_and_set is not guaranteed to do what we want
5095 // on all architectures. So we check it works before relying on it.
5096 #if defined(ZERO) && defined(ASSERT)
5097 {
5098 jint a = 0xcafebabe;
5099 jint b = Atomic::xchg(0xdeadbeef, &a);
5100 void *c = &a;
5101 void *d = Atomic::xchg_ptr(&b, &c);
5102 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5103 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5104 }
5105 #endif // ZERO && ASSERT
5106
5107 // At the moment it's only possible to have one Java VM,
5108 // since some of the runtime state is in global variables.
5109
5110 // We cannot use our mutex locks here, since they only work on
5111 // Threads. We do an atomic compare and exchange to ensure only
5112 // one thread can call this method at a time
5113
5114 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5115 // the add/dec implementations are dependent on whether we are running
5116 // on a multiprocessor, and at this stage of initialization the os::is_MP
5117 // function used to determine this will always return false. Atomic::xchg
5118 // does not have this problem.
5119 if (Atomic::xchg(1, &vm_created) == 1) {
5120 return JNI_ERR; // already created, or create attempt in progress
5121 }
5122 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5123 return JNI_ERR; // someone tried and failed and retry not allowed.
5124 }
5125
5126 assert(vm_created == 1, "vm_created is true during the creation");
5127
5128 /**
5129 * Certain errors during initialization are recoverable and do not
5130 * prevent this method from being called again at a later time
5131 * (perhaps with different arguments). However, at a certain
5132 * point during initialization if an error occurs we cannot allow
5133 * this function to be called again (or it will crash). In those
5134 * situations, the 'canTryAgain' flag is set to false, which atomically
5135 * sets safe_to_recreate_vm to 1, such that any new call to
5136 * JNI_CreateJavaVM will immediately fail using the above logic.
5137 */
5138 bool can_try_again = true;
5139
5140 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5141 if (result == JNI_OK) {
5142 JavaThread *thread = JavaThread::current();
5143 /* thread is thread_in_vm here */
5144 *vm = (JavaVM *)(&main_vm);
5145 *(JNIEnv**)penv = thread->jni_environment();
5146
5147 // Tracks the time application was running before GC
5148 RuntimeService::record_application_start();
5149
5150 // Notify JVMTI
5151 if (JvmtiExport::should_post_thread_life()) {
5152 JvmtiExport::post_thread_start(thread);
5153 }
5154
5155 EVENT_BEGIN(TraceEventThreadStart, event);
5156 EVENT_COMMIT(event,
5157 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5158
5159 // Check if we should compile all classes on bootclasspath
5160 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
5161 NOT_PRODUCT(if (ReplayCompiles) ciReplay::replay(thread);)
5162 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5163 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5164 } else {
5165 if (can_try_again) {
5166 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5167 safe_to_recreate_vm = 1;
5168 }
5169
5170 // Creation failed. We must reset vm_created
5171 *vm = 0;
5172 *(JNIEnv**)penv = 0;
5173 // reset vm_created last to avoid race condition. Use OrderAccess to
5174 // control both compiler and architectural-based reordering.
5175 OrderAccess::release_store(&vm_created, 0);
5176 }
5177
5178 NOT_PRODUCT(test_error_handler(ErrorHandlerTest));
5179 NOT_PRODUCT(execute_internal_vm_tests());
5180 return result;
5181 }
5182
5183 #ifndef USDT2
5184 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5185 JavaVM**, jsize, jsize*);
5186 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5187 #endif /* !USDT2 */
5188
5189 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5190 // See bug 4367188, the wrapper can sometimes cause VM crashes
5191 // JNIWrapper("GetCreatedJavaVMs");
5192 #ifndef USDT2
5193 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5194 vm_buf, bufLen, numVMs);
5195 #else /* USDT2 */
5196 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5197 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5198 #endif /* USDT2 */
5199 if (vm_created) {
5200 if (numVMs != NULL) *numVMs = 1;
5201 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5202 } else {
5203 if (numVMs != NULL) *numVMs = 0;
5204 }
5205 #ifndef USDT2
5206 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5207 #else /* USDT2 */
5208 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5209 JNI_OK);
5210 #endif /* USDT2 */
5211 return JNI_OK;
5212 }
5213
5214 extern "C" {
5215
5216 #ifndef USDT2
5217 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5218 #else /* USDT2 */
5219 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5220 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5221 #endif /* USDT2 */
5222
5223 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5224 #ifndef USDT2
5225 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5226 #else /* USDT2 */
5227 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5228 vm);
5229 #endif /* USDT2 */
5230 jint res = JNI_ERR;
5231 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5232
5233 if (!vm_created) {
5234 res = JNI_ERR;
5235 return res;
5236 }
5237
5238 JNIWrapper("DestroyJavaVM");
5239 JNIEnv *env;
5240 JavaVMAttachArgs destroyargs;
5241 destroyargs.version = CurrentVersion;
5242 destroyargs.name = (char *)"DestroyJavaVM";
5243 destroyargs.group = NULL;
5244 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5245 if (res != JNI_OK) {
5246 return res;
5247 }
5248
5249 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5250 JavaThread* thread = JavaThread::current();
5251 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5252 if (Threads::destroy_vm()) {
5253 // Should not change thread state, VM is gone
5254 vm_created = false;
5255 res = JNI_OK;
5256 return res;
5257 } else {
5258 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5259 res = JNI_ERR;
5260 return res;
5261 }
5262 }
5263
5264
5265 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5266 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5267
5268 // Check below commented out from JDK1.2fcs as well
5269 /*
5270 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5271 return JNI_EVERSION;
5272 }
5273 */
5274
5275 Thread* t = ThreadLocalStorage::get_thread_slow();
5276 if (t != NULL) {
5277 // If the thread has been attached this operation is a no-op
5278 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5279 return JNI_OK;
5280 }
5281
5282 // Create a thread and mark it as attaching so it will be skipped by the
5283 // ThreadsListEnumerator - see CR 6404306
5284 JavaThread* thread = new JavaThread(true);
5285
5286 // Set correct safepoint info. The thread is going to call into Java when
5287 // initializing the Java level thread object. Hence, the correct state must
5288 // be set in order for the Safepoint code to deal with it correctly.
5289 thread->set_thread_state(_thread_in_vm);
5290 // Must do this before initialize_thread_local_storage
5291 thread->record_stack_base_and_size();
5292
5293 thread->initialize_thread_local_storage();
5294
5295 if (!os::create_attached_thread(thread)) {
5296 delete thread;
5297 return JNI_ERR;
5298 }
5299 // Enable stack overflow checks
5300 thread->create_stack_guard_pages();
5301
5302 thread->initialize_tlab();
5303
5304 thread->cache_global_variables();
5305
5306 // Crucial that we do not have a safepoint check for this thread, since it has
5307 // not been added to the Thread list yet.
5308 { Threads_lock->lock_without_safepoint_check();
5309 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5310 // avoid this thread trying to do a GC before it is added to the thread-list
5311 thread->set_active_handles(JNIHandleBlock::allocate_block());
5312 Threads::add(thread, daemon);
5313 Threads_lock->unlock();
5314 }
5315 // Create thread group and name info from attach arguments
5316 oop group = NULL;
5317 char* thread_name = NULL;
5318 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5319 group = JNIHandles::resolve(args->group);
5320 thread_name = args->name; // may be NULL
5321 }
5322 if (group == NULL) group = Universe::main_thread_group();
5323
5324 // Create Java level thread object and attach it to this thread
5325 bool attach_failed = false;
5326 {
5327 EXCEPTION_MARK;
5328 HandleMark hm(THREAD);
5329 Handle thread_group(THREAD, group);
5330 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5331 if (HAS_PENDING_EXCEPTION) {
5332 CLEAR_PENDING_EXCEPTION;
5333 // cleanup outside the handle mark.
5334 attach_failed = true;
5335 }
5336 }
5337
5338 if (attach_failed) {
5339 // Added missing cleanup
5340 thread->cleanup_failed_attach_current_thread();
5341 return JNI_ERR;
5342 }
5343
5344 // mark the thread as no longer attaching
5345 // this uses a fence to push the change through so we don't have
5346 // to regrab the threads_lock
5347 thread->set_done_attaching_via_jni();
5348
5349 // Set java thread status.
5350 java_lang_Thread::set_thread_status(thread->threadObj(),
5351 java_lang_Thread::RUNNABLE);
5352
5353 // Notify the debugger
5354 if (JvmtiExport::should_post_thread_life()) {
5355 JvmtiExport::post_thread_start(thread);
5356 }
5357
5358 EVENT_BEGIN(TraceEventThreadStart, event);
5359 EVENT_COMMIT(event,
5360 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5361
5362 *(JNIEnv**)penv = thread->jni_environment();
5363
5364 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5365 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5366 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5367 // needed.
5368
5369 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5370
5371 // Perform any platform dependent FPU setup
5372 os::setup_fpu();
5373
5374 return JNI_OK;
5375 }
5376
5377
5378 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5379 #ifndef USDT2
5380 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5381 #else /* USDT2 */
5382 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5383 vm, penv, _args);
5384 #endif /* USDT2 */
5385 if (!vm_created) {
5386 #ifndef USDT2
5387 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5388 #else /* USDT2 */
5389 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5390 (uint32_t) JNI_ERR);
5391 #endif /* USDT2 */
5392 return JNI_ERR;
5393 }
5394
5395 JNIWrapper("AttachCurrentThread");
5396 jint ret = attach_current_thread(vm, penv, _args, false);
5397 #ifndef USDT2
5398 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5399 #else /* USDT2 */
5400 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5401 ret);
5402 #endif /* USDT2 */
5403 return ret;
5404 }
5405
5406
5407 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5408 #ifndef USDT2
5409 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5410 #else /* USDT2 */
5411 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5412 vm);
5413 #endif /* USDT2 */
5414 VM_Exit::block_if_vm_exited();
5415
5416 JNIWrapper("DetachCurrentThread");
5417
5418 // If the thread has been deattacted the operations is a no-op
5419 if (ThreadLocalStorage::thread() == NULL) {
5420 #ifndef USDT2
5421 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5422 #else /* USDT2 */
5423 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5424 JNI_OK);
5425 #endif /* USDT2 */
5426 return JNI_OK;
5427 }
5428
5429 JavaThread* thread = JavaThread::current();
5430 if (thread->has_last_Java_frame()) {
5431 #ifndef USDT2
5432 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5433 #else /* USDT2 */
5434 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5435 (uint32_t) JNI_ERR);
5436 #endif /* USDT2 */
5437 // Can't detach a thread that's running java, that can't work.
5438 return JNI_ERR;
5439 }
5440
5441 // Safepoint support. Have to do call-back to safepoint code, if in the
5442 // middel of a safepoint operation
5443 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5444
5445 // XXX: Note that JavaThread::exit() call below removes the guards on the
5446 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5447 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5448 // of the guards is visible in jni_AttachCurrentThread above,
5449 // the removal of the guards is buried below in JavaThread::exit()
5450 // here. The abstraction should be more symmetrically either exposed
5451 // or hidden (e.g. it could probably be hidden in the same
5452 // (platform-dependent) methods where we do alternate stack
5453 // maintenance work?)
5454 thread->exit(false, JavaThread::jni_detach);
5455 delete thread;
5456
5457 #ifndef USDT2
5458 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5459 #else /* USDT2 */
5460 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5461 JNI_OK);
5462 #endif /* USDT2 */
5463 return JNI_OK;
5464 }
5465
5466 #ifndef USDT2
5467 DT_RETURN_MARK_DECL(GetEnv, jint);
5468 #else /* USDT2 */
5469 DT_RETURN_MARK_DECL(GetEnv, jint
5470 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5471 #endif /* USDT2 */
5472
5473 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5474 #ifndef USDT2
5475 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5476 #else /* USDT2 */
5477 HOTSPOT_JNI_GETENV_ENTRY(
5478 vm, penv, version);
5479 #endif /* USDT2 */
5480 jint ret = JNI_ERR;
5481 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5482
5483 if (!vm_created) {
5484 *penv = NULL;
5485 ret = JNI_EDETACHED;
5486 return ret;
5487 }
5488
5489 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5490 return ret;
5491 }
5492
5493 #ifndef JVMPI_VERSION_1
5494 // need these in order to be polite about older agents
5495 #define JVMPI_VERSION_1 ((jint)0x10000001)
5496 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5497 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5498 #endif // !JVMPI_VERSION_1
5499
5500 Thread* thread = ThreadLocalStorage::thread();
5501 if (thread != NULL && thread->is_Java_thread()) {
5502 if (Threads::is_supported_jni_version_including_1_1(version)) {
5503 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5504 ret = JNI_OK;
5505 return ret;
5506
5507 } else if (version == JVMPI_VERSION_1 ||
5508 version == JVMPI_VERSION_1_1 ||
5509 version == JVMPI_VERSION_1_2) {
5510 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5511 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5512 ret = JNI_EVERSION;
5513 return ret;
5514 } else if (JvmtiExport::is_jvmdi_version(version)) {
5515 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5516 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5517 ret = JNI_EVERSION;
5518 return ret;
5519 } else {
5520 *penv = NULL;
5521 ret = JNI_EVERSION;
5522 return ret;
5523 }
5524 } else {
5525 *penv = NULL;
5526 ret = JNI_EDETACHED;
5527 return ret;
5528 }
5529 }
5530
5531
5532 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5533 #ifndef USDT2
5534 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5535 #else /* USDT2 */
5536 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5537 vm, penv, _args);
5538 #endif /* USDT2 */
5539 if (!vm_created) {
5540 #ifndef USDT2
5541 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5542 #else /* USDT2 */
5543 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5544 (uint32_t) JNI_ERR);
5545 #endif /* USDT2 */
5546 return JNI_ERR;
5547 }
5548
5549 JNIWrapper("AttachCurrentThreadAsDaemon");
5550 jint ret = attach_current_thread(vm, penv, _args, true);
5551 #ifndef USDT2
5552 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5553 #else /* USDT2 */
5554 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5555 ret);
5556 #endif /* USDT2 */
5557 return ret;
5558 }
5559
5560
5561 } // End extern "C"
5562
5563 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5564 NULL,
5565 NULL,
5566 NULL,
5567
5568 jni_DestroyJavaVM,
5569 jni_AttachCurrentThread,
5570 jni_DetachCurrentThread,
5571 jni_GetEnv,
5572 jni_AttachCurrentThreadAsDaemon
5573 };