1 /*
2 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26
27 #include <new>
28
29 #include "classfile/classLoaderData.hpp"
30 #include "classfile/modules.hpp"
31 #include "classfile/protectionDomainCache.hpp"
32 #include "classfile/stringTable.hpp"
33 #include "code/codeCache.hpp"
34 #include "compiler/methodMatcher.hpp"
35 #include "compiler/directivesParser.hpp"
36 #include "gc/shared/gcConfig.hpp"
37 #include "gc/shared/genCollectedHeap.hpp"
38 #include "jvmtifiles/jvmtiEnv.hpp"
39 #include "memory/metadataFactory.hpp"
40 #include "memory/metaspaceShared.inline.hpp"
41 #include "memory/iterator.hpp"
42 #include "memory/resourceArea.hpp"
43 #include "memory/universe.hpp"
44 #include "memory/oopFactory.hpp"
45 #include "oops/array.hpp"
46 #include "oops/constantPool.inline.hpp"
47 #include "oops/method.inline.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/objArrayOop.inline.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "oops/typeArrayOop.inline.hpp"
52 #include "prims/resolvedMethodTable.hpp"
53 #include "prims/wbtestmethods/parserTests.hpp"
54 #include "prims/whitebox.inline.hpp"
55 #include "runtime/arguments.hpp"
56 #include "runtime/compilationPolicy.hpp"
57 #include "runtime/deoptimization.hpp"
58 #include "runtime/fieldDescriptor.inline.hpp"
59 #include "runtime/flags/jvmFlag.hpp"
60 #include "runtime/frame.inline.hpp"
61 #include "runtime/handshake.hpp"
62 #include "runtime/interfaceSupport.inline.hpp"
63 #include "runtime/javaCalls.hpp"
64 #include "runtime/jniHandles.inline.hpp"
65 #include "runtime/os.hpp"
66 #include "runtime/sweeper.hpp"
67 #include "runtime/thread.hpp"
68 #include "runtime/threadSMR.hpp"
69 #include "runtime/vm_version.hpp"
70 #include "services/memoryService.hpp"
71 #include "utilities/align.hpp"
72 #include "utilities/debug.hpp"
73 #include "utilities/elfFile.hpp"
74 #include "utilities/exceptions.hpp"
75 #include "utilities/macros.hpp"
76 #if INCLUDE_CDS
77 #include "prims/cdsoffsets.hpp"
78 #endif // INCLUDE_CDS
79 #if INCLUDE_G1GC
80 #include "gc/g1/g1CollectedHeap.inline.hpp"
81 #include "gc/g1/g1ConcurrentMark.hpp"
82 #include "gc/g1/g1ConcurrentMarkThread.hpp"
83 #include "gc/g1/heapRegionRemSet.hpp"
84 #endif // INCLUDE_G1GC
85 #if INCLUDE_PARALLELGC
86 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
87 #include "gc/parallel/adjoiningGenerations.hpp"
88 #endif // INCLUDE_PARALLELGC
89 #if INCLUDE_NMT
90 #include "services/mallocSiteTable.hpp"
91 #include "services/memTracker.hpp"
92 #include "utilities/nativeCallStack.hpp"
93 #endif // INCLUDE_NMT
94
95 #ifdef LINUX
96 #include "osContainer_linux.hpp"
97 #endif
98
99 #define SIZE_T_MAX_VALUE ((size_t) -1)
100
101 #define CHECK_JNI_EXCEPTION_(env, value) \
102 do { \
103 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
104 THREAD->clear_pending_jni_exception_check(); \
105 if (HAS_PENDING_EXCEPTION) { \
106 return(value); \
107 } \
108 } while (0)
109
110 #define CHECK_JNI_EXCEPTION(env) \
111 do { \
112 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
113 THREAD->clear_pending_jni_exception_check(); \
114 if (HAS_PENDING_EXCEPTION) { \
115 return; \
116 } \
117 } while (0)
118
119 bool WhiteBox::_used = false;
120 volatile bool WhiteBox::compilation_locked = false;
121
122 class VM_WhiteBoxOperation : public VM_Operation {
123 public:
124 VM_WhiteBoxOperation() { }
125 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
126 bool allow_nested_vm_operations() const { return true; }
127 };
128
129
130 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
131 return (jlong)(void*)JNIHandles::resolve(obj);
132 WB_END
133
134 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
135 return heapOopSize;
136 WB_END
137
138 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
139 return os::vm_page_size();
140 WB_END
141
142 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
143 return os::vm_allocation_granularity();
144 WB_END
145
146 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
147 return os::large_page_size();
148 WB_END
149
150 class WBIsKlassAliveClosure : public LockedClassesDo {
151 Symbol* _name;
152 bool _found;
153 public:
154 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
155
156 void do_klass(Klass* k) {
157 if (_found) return;
158 Symbol* ksym = k->name();
159 if (ksym->fast_compare(_name) == 0) {
160 _found = true;
161 }
162 }
163
164 bool found() const {
165 return _found;
166 }
167 };
168
169 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
170 oop h_name = JNIHandles::resolve(name);
171 if (h_name == NULL) return false;
172 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
173 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
174
175 WBIsKlassAliveClosure closure(sym);
176 ClassLoaderDataGraph::classes_do(&closure);
177
178 return closure.found();
179 WB_END
180
181 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
182 oop h_name = JNIHandles::resolve(name);
183 if (h_name == NULL) return false;
184 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_0);
185 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
186 return (jint)sym->refcount();
187 WB_END
188
189
190 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
191 #if INCLUDE_JVMTI
192 ResourceMark rm;
193 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
194 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
195 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
196 assert(err == JVMTI_ERROR_NONE, "must not fail");
197 #endif
198 }
199 WB_END
200
201 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
202 #if INCLUDE_JVMTI
203 ResourceMark rm;
204 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
205 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
206 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
207 assert(err == JVMTI_ERROR_NONE, "must not fail");
208 #endif
209 }
210 WB_END
211
212
213 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
214 return (jlong)Arguments::max_heap_for_compressed_oops();
215 }
216 WB_END
217
218 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
219 CollectorPolicy * p = Universe::heap()->collector_policy();
220 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
221 SIZE_FORMAT " Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
222 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
223 p->space_alignment(), p->heap_alignment());
224 }
225 WB_END
226
227 #ifndef PRODUCT
228 // Forward declaration
229 void TestReservedSpace_test();
230 void TestReserveMemorySpecial_test();
231 void TestVirtualSpace_test();
232 void TestMetaspaceUtils_test();
233 #endif
234
235 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
236 #ifndef PRODUCT
237 TestReservedSpace_test();
238 TestReserveMemorySpecial_test();
239 TestVirtualSpace_test();
240 TestMetaspaceUtils_test();
241 #endif
242 WB_END
243
244 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
245 size_t granularity = os::vm_allocation_granularity();
246 ReservedHeapSpace rhs(100 * granularity, granularity, false);
247 VirtualSpace vs;
248 vs.initialize(rhs, 50 * granularity);
249
250 // Check if constraints are complied
251 if (!( UseCompressedOops && rhs.base() != NULL &&
252 Universe::narrow_oop_base() != NULL &&
253 Universe::narrow_oop_use_implicit_null_checks() )) {
254 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
255 "\tUseCompressedOops is %d\n"
256 "\trhs.base() is " PTR_FORMAT "\n"
257 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
258 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
259 UseCompressedOops,
260 p2i(rhs.base()),
261 p2i(Universe::narrow_oop_base()),
262 Universe::narrow_oop_use_implicit_null_checks());
263 return;
264 }
265 tty->print_cr("Reading from no access area... ");
266 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
267 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
268 WB_END
269
270 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
271 size_t magnitude, size_t iterations) {
272 size_t granularity = os::vm_allocation_granularity();
273 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false);
274 VirtualSpace vs;
275 if (!vs.initialize(rhs, 0)) {
276 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
277 return 3;
278 }
279
280 int seed = os::random();
281 tty->print_cr("Random seed is %d", seed);
282 os::init_random(seed);
283
284 for (size_t i = 0; i < iterations; i++) {
285
286 // Whether we will shrink or grow
287 bool shrink = os::random() % 2L == 0;
288
289 // Get random delta to resize virtual space
290 size_t delta = (size_t)os::random() % magnitude;
291
292 // If we are about to shrink virtual space below zero, then expand instead
293 if (shrink && vs.committed_size() < delta) {
294 shrink = false;
295 }
296
297 // Resizing by delta
298 if (shrink) {
299 vs.shrink_by(delta);
300 } else {
301 // If expanding fails expand_by will silently return false
302 vs.expand_by(delta, true);
303 }
304 }
305 return 0;
306 }
307
308 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
309 jlong reserved_space_size, jlong magnitude, jlong iterations))
310 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
311 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
312 iterations);
313 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
314 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
315 return 1;
316 }
317
318 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
319 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
320 if (sizeof(size_t) < sizeof(jlong)) {
321 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
322 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
323 || iterations > size_t_max_value) {
324 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
325 return 2;
326 }
327 }
328
329 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
330 (size_t) magnitude, (size_t) iterations);
331 WB_END
332
333 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
334 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
335 WB_END
336
337 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
338 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
339 WB_END
340
341 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
342 return GCConfig::is_gc_selected_ergonomically();
343 WB_END
344
345 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
346 oop p = JNIHandles::resolve(obj);
347 #if INCLUDE_G1GC
348 if (UseG1GC) {
349 G1CollectedHeap* g1h = G1CollectedHeap::heap();
350 const HeapRegion* hr = g1h->heap_region_containing(p);
351 if (hr == NULL) {
352 return false;
353 }
354 return !(hr->is_young());
355 }
356 #endif
357 #if INCLUDE_PARALLELGC
358 if (UseParallelGC) {
359 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
360 return !psh->is_in_young(p);
361 }
362 #endif
363 #if INCLUDE_ZGC
364 if (UseZGC) {
365 return Universe::heap()->is_in(p);
366 }
367 #endif
368 GenCollectedHeap* gch = GenCollectedHeap::heap();
369 return !gch->is_in_young(p);
370 WB_END
371
372 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
373 oop p = JNIHandles::resolve(obj);
374 return p->size() * HeapWordSize;
375 WB_END
376
377 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
378 size_t alignment = Universe::heap()->collector_policy()->space_alignment();
379 return (jlong)alignment;
380 WB_END
381
382 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
383 size_t alignment = Universe::heap()->collector_policy()->heap_alignment();
384 return (jlong)alignment;
385 WB_END
386
387 WB_ENTRY(jboolean, WB_SupportsConcurrentGCPhaseControl(JNIEnv* env, jobject o))
388 return Universe::heap()->supports_concurrent_phase_control();
389 WB_END
390
391 WB_ENTRY(jobjectArray, WB_GetConcurrentGCPhases(JNIEnv* env, jobject o))
392 const char* const* phases = Universe::heap()->concurrent_phases();
393 jint nphases = 0;
394 for ( ; phases[nphases] != NULL; ++nphases) ;
395
396 ResourceMark rm(thread);
397 ThreadToNativeFromVM ttn(thread);
398 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
399 CHECK_JNI_EXCEPTION_(env, NULL);
400
401 jobjectArray result = env->NewObjectArray(nphases, clazz, NULL);
402 CHECK_JNI_EXCEPTION_(env, NULL);
403
404 // If push fails, return with pending exception.
405 if (env->PushLocalFrame(nphases) < 0) return NULL;
406 for (jint i = 0; i < nphases; ++i) {
407 jstring phase = env->NewStringUTF(phases[i]);
408 CHECK_JNI_EXCEPTION_(env, NULL);
409 env->SetObjectArrayElement(result, i, phase);
410 CHECK_JNI_EXCEPTION_(env, NULL);
411 }
412 env->PopLocalFrame(NULL);
413
414 return result;
415 WB_END
416
417 WB_ENTRY(jboolean, WB_RequestConcurrentGCPhase(JNIEnv* env, jobject o, jstring name))
418 Handle h_name(THREAD, JNIHandles::resolve(name));
419 ResourceMark rm;
420 const char* c_name = java_lang_String::as_utf8_string(h_name());
421 return Universe::heap()->request_concurrent_phase(c_name);
422 WB_END
423
424 #if INCLUDE_G1GC
425
426 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
427 if (UseG1GC) {
428 G1CollectedHeap* g1h = G1CollectedHeap::heap();
429 oop result = JNIHandles::resolve(obj);
430 const HeapRegion* hr = g1h->heap_region_containing(result);
431 return hr->is_humongous();
432 }
433 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
434 WB_END
435
436 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
437 if (UseG1GC) {
438 G1CollectedHeap* g1h = G1CollectedHeap::heap();
439 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
440 return hr->is_humongous();
441 }
442 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
443 WB_END
444
445 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
446 if (UseG1GC) {
447 G1CollectedHeap* g1h = G1CollectedHeap::heap();
448 const HeapRegion* hr = g1h->heap_region_containing((void*) addr);
449 return hr->is_free();
450 }
451 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
452 WB_END
453
454 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
455 if (UseG1GC) {
456 G1CollectedHeap* g1h = G1CollectedHeap::heap();
457 size_t nr = g1h->max_regions();
458 return (jlong)nr;
459 }
460 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
461 WB_END
462
463 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
464 if (UseG1GC) {
465 G1CollectedHeap* g1h = G1CollectedHeap::heap();
466 size_t nr = g1h->num_free_regions();
467 return (jlong)nr;
468 }
469 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
470 WB_END
471
472 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
473 if (UseG1GC) {
474 G1CollectedHeap* g1h = G1CollectedHeap::heap();
475 return g1h->concurrent_mark()->cm_thread()->during_cycle();
476 }
477 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
478 WB_END
479
480 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
481 if (UseG1GC) {
482 G1CollectedHeap* g1h = G1CollectedHeap::heap();
483 if (!g1h->concurrent_mark()->cm_thread()->during_cycle()) {
484 g1h->collect(GCCause::_wb_conc_mark);
485 return true;
486 }
487 return false;
488 }
489 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1StartMarkCycle: G1 GC is not enabled");
490 WB_END
491
492 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
493 if (UseG1GC) {
494 return (jint)HeapRegion::GrainBytes;
495 }
496 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
497 WB_END
498
499 #endif // INCLUDE_G1GC
500
501 #if INCLUDE_PARALLELGC
502
503 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
504 if (UseParallelGC) {
505 return ParallelScavengeHeap::heap()->gens()->virtual_spaces()->alignment();
506 }
507 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
508 WB_END
509
510 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
511 if (UseParallelGC) {
512 return ParallelScavengeHeap::heap()->generation_alignment();
513 }
514 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
515 WB_END
516
517 #endif // INCLUDE_PARALLELGC
518
519 #if INCLUDE_G1GC
520
521 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
522 if (UseG1GC) {
523 ResourceMark rm(THREAD);
524 G1CollectedHeap* g1h = G1CollectedHeap::heap();
525 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
526 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
527 return JNIHandles::make_local(env, h());
528 }
529 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
530 WB_END
531
532 class OldRegionsLivenessClosure: public HeapRegionClosure {
533
534 private:
535 const int _liveness;
536 size_t _total_count;
537 size_t _total_memory;
538 size_t _total_memory_to_free;
539
540 public:
541 OldRegionsLivenessClosure(int liveness) :
542 _liveness(liveness),
543 _total_count(0),
544 _total_memory(0),
545 _total_memory_to_free(0) { }
546
547 size_t total_count() { return _total_count; }
548 size_t total_memory() { return _total_memory; }
549 size_t total_memory_to_free() { return _total_memory_to_free; }
550
551 bool do_heap_region(HeapRegion* r) {
552 if (r->is_old()) {
553 size_t prev_live = r->marked_bytes();
554 size_t live = r->live_bytes();
555 size_t size = r->used();
556 size_t reg_size = HeapRegion::GrainBytes;
557 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
558 _total_memory += size;
559 ++_total_count;
560 if (size == reg_size) {
561 // we don't include non-full regions since they are unlikely included in mixed gc
562 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
563 _total_memory_to_free += size - prev_live;
564 }
565 }
566 }
567 return false;
568 }
569 };
570
571
572 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
573 if (!UseG1GC) {
574 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
575 }
576 if (liveness < 0) {
577 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
578 }
579
580 G1CollectedHeap* g1h = G1CollectedHeap::heap();
581 OldRegionsLivenessClosure rli(liveness);
582 g1h->heap_region_iterate(&rli);
583
584 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
585 result->long_at_put(0, rli.total_count());
586 result->long_at_put(1, rli.total_memory());
587 result->long_at_put(2, rli.total_memory_to_free());
588 return (jlongArray) JNIHandles::make_local(env, result);
589 WB_END
590
591 #endif // INCLUDE_G1GC
592
593 #if INCLUDE_NMT
594 // Alloc memory using the test memory type so that we can use that to see if
595 // NMT picks it up correctly
596 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
597 jlong addr = 0;
598 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
599 return addr;
600 WB_END
601
602 // Alloc memory with pseudo call stack. The test can create psudo malloc
603 // allocation site to stress the malloc tracking.
604 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
605 address pc = (address)(size_t)pseudo_stack;
606 NativeCallStack stack(&pc, 1);
607 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
608 WB_END
609
610 // Free the memory allocated by NMTAllocTest
611 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
612 os::free((void*)(uintptr_t)mem);
613 WB_END
614
615 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
616 jlong addr = 0;
617
618 addr = (jlong)(uintptr_t)os::reserve_memory(size);
619 MemTracker::record_virtual_memory_type((address)addr, mtTest);
620
621 return addr;
622 WB_END
623
624 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
625 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((size_t)size, (char*)(uintptr_t)addr);
626 MemTracker::record_virtual_memory_type((address)addr, mtTest);
627
628 return addr;
629 WB_END
630
631 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
632 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
633 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
634 WB_END
635
636 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
637 os::uncommit_memory((char *)(uintptr_t)addr, size);
638 WB_END
639
640 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
641 os::release_memory((char *)(uintptr_t)addr, size);
642 WB_END
643
644 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
645 // Test that we can downgrade NMT levels but not upgrade them.
646 if (MemTracker::tracking_level() == NMT_off) {
647 MemTracker::transition_to(NMT_off);
648 return MemTracker::tracking_level() == NMT_off;
649 } else {
650 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
651 MemTracker::transition_to(NMT_summary);
652 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
653
654 // Can't go to detail once NMT is set to summary.
655 MemTracker::transition_to(NMT_detail);
656 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
657
658 // Shutdown sets tracking level to minimal.
659 MemTracker::shutdown();
660 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
661
662 // Once the tracking level is minimal, we cannot increase to summary.
663 // The code ignores this request instead of asserting because if the malloc site
664 // table overflows in another thread, it tries to change the code to summary.
665 MemTracker::transition_to(NMT_summary);
666 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
667
668 // Really can never go up to detail, verify that the code would never do this.
669 MemTracker::transition_to(NMT_detail);
670 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
671 return MemTracker::tracking_level() == NMT_minimal;
672 }
673 WB_END
674
675 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
676 int hash_size = MallocSiteTable::hash_buckets();
677 assert(hash_size > 0, "NMT hash_size should be > 0");
678 return (jint)hash_size;
679 WB_END
680 #endif // INCLUDE_NMT
681
682 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
683 assert(method != NULL, "method should not be null");
684 ThreadToNativeFromVM ttn(thread);
685 return env->FromReflectedMethod(method);
686 }
687
688 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
689 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
690 private:
691 int _result;
692 const bool _make_not_entrant;
693 public:
694 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
695 _result(0), _make_not_entrant(make_not_entrant) { }
696 int result() const { return _result; }
697
698 void doit() {
699 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
700 if (t->has_last_Java_frame()) {
701 for (StackFrameStream fst(t, UseBiasedLocking); !fst.is_done(); fst.next()) {
702 frame* f = fst.current();
703 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
704 RegisterMap* reg_map = fst.register_map();
705 Deoptimization::deoptimize(t, *f, reg_map);
706 if (_make_not_entrant) {
707 CompiledMethod* cm = CodeCache::find_compiled(f->pc());
708 assert(cm != NULL, "sanity check");
709 cm->make_not_entrant();
710 }
711 ++_result;
712 }
713 }
714 }
715 }
716 }
717 };
718
719 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
720 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
721 VMThread::execute(&op);
722 return op.result();
723 WB_END
724
725 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
726 MutexLockerEx mu(Compile_lock);
727 CodeCache::mark_all_nmethods_for_deoptimization();
728 VM_Deoptimize op;
729 VMThread::execute(&op);
730 WB_END
731
732 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
733 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
734 int result = 0;
735 CHECK_JNI_EXCEPTION_(env, result);
736 MutexLockerEx mu(Compile_lock);
737 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
738 if (is_osr) {
739 result += mh->mark_osr_nmethods();
740 } else if (mh->code() != NULL) {
741 mh->code()->mark_for_deoptimization();
742 ++result;
743 }
744 result += CodeCache::mark_for_deoptimization(mh());
745 if (result > 0) {
746 VM_Deoptimize op;
747 VMThread::execute(&op);
748 }
749 return result;
750 WB_END
751
752 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
753 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
754 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
755 MutexLockerEx mu(Compile_lock);
756 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
757 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
758 if (code == NULL) {
759 return JNI_FALSE;
760 }
761 return (code->is_alive() && !code->is_marked_for_deoptimization());
762 WB_END
763
764 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
765 if (method == NULL || comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
766 return false;
767 }
768 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
769 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
770 MutexLockerEx mu(Compile_lock);
771 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
772 if (is_osr) {
773 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
774 } else {
775 return CompilationPolicy::can_be_compiled(mh, comp_level);
776 }
777 WB_END
778
779 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
780 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
781 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
782 MutexLockerEx mu(Compile_lock);
783 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
784 return mh->queued_for_compilation();
785 WB_END
786
787 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
788 if (compLevel < CompLevel_none || compLevel > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
789 return false; // Intrinsic is not available on a non-existent compilation level.
790 }
791 jmethodID method_id, compilation_context_id;
792 method_id = reflected_method_to_jmid(thread, env, method);
793 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
794 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
795
796 DirectiveSet* directive;
797 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
798 assert(comp != NULL, "compiler not available");
799 if (compilation_context != NULL) {
800 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
801 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
802 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
803 directive = DirectivesStack::getMatchingDirective(cch, comp);
804 } else {
805 // Calling with NULL matches default directive
806 directive = DirectivesStack::getDefaultDirective(comp);
807 }
808 bool result = comp->is_intrinsic_available(mh, directive);
809 DirectivesStack::release(directive);
810 return result;
811 WB_END
812
813 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
814 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
815 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
816 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
817 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
818 return (code != NULL ? code->comp_level() : CompLevel_none);
819 WB_END
820
821 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
822 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
823 CHECK_JNI_EXCEPTION(env);
824 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
825 if (is_osr) {
826 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
827 } else {
828 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
829 }
830 WB_END
831
832 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
833 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
834 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
835 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
836 CompiledMethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
837 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
838 WB_END
839
840 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
841 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
842 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
843 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
844 bool result = mh->dont_inline();
845 mh->set_dont_inline(value == JNI_TRUE);
846 return result;
847 WB_END
848
849 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
850 if (comp_level == CompLevel_any) {
851 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
852 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
853 } else {
854 return CompileBroker::queue_size(comp_level);
855 }
856 WB_END
857
858 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
859 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
860 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
861 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
862 bool result = mh->force_inline();
863 mh->set_force_inline(value == JNI_TRUE);
864 return result;
865 WB_END
866
867 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, Thread* THREAD) {
868 // Screen for unavailable/bad comp level or null method
869 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
870 if (method == NULL) {
871 tty->print_cr("WB error: request to compile NULL method");
872 return false;
873 }
874 if (comp_level > MIN2((CompLevel) TieredStopAtLevel, CompLevel_highest_tier)) {
875 tty->print_cr("WB error: invalid compilation level %d", comp_level);
876 return false;
877 }
878 if (comp == NULL) {
879 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
880 return false;
881 }
882
883 // Check if compilation is blocking
884 methodHandle mh(THREAD, method);
885 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
886 bool is_blocking = !directive->BackgroundCompilationOption;
887 DirectivesStack::release(directive);
888
889 // Compile method and check result
890 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), CompileTask::Reason_Whitebox, THREAD);
891 MutexLockerEx mu(Compile_lock);
892 bool is_queued = mh->queued_for_compilation();
893 if ((!is_blocking && is_queued) || nm != NULL) {
894 return true;
895 }
896 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
897 mh->print_short_name(tty);
898 tty->cr();
899 if (is_blocking && is_queued) {
900 tty->print_cr("WB error: blocking compilation is still in queue!");
901 }
902 return false;
903 }
904
905 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
906 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
907 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
908 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
909 WB_END
910
911 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
912 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
913 return WhiteBox::compile_method(ik->class_initializer(), comp_level, InvocationEntryBci, THREAD);
914 WB_END
915
916 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
917 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
918 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
919
920 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
921 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
922 bool result = directive->PrintAssemblyOption;
923 DirectivesStack::release(directive);
924
925 return result;
926 WB_END
927
928 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
929 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
930 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
931
932 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
933
934 ResourceMark rm;
935 const char* error_msg = NULL;
936 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
937 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
938
939 if (m == NULL) {
940 assert(error_msg != NULL, "Always have an error message");
941 tty->print_cr("Got error: %s", error_msg);
942 return -1; // Pattern failed
943 }
944
945 // Pattern works - now check if it matches
946 int result;
947 if (m->match(mh, InlineMatcher::force_inline)) {
948 result = 2; // Force inline match
949 } else if (m->match(mh, InlineMatcher::dont_inline)) {
950 result = 1; // Dont inline match
951 } else {
952 result = 0; // No match
953 }
954 delete m;
955 return result;
956 WB_END
957
958 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
959 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
960 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
961
962 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
963
964 ResourceMark rm;
965 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
966
967 const char* error_msg = NULL;
968
969 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg);
970 if (m == NULL) {
971 assert(error_msg != NULL, "Must have error_msg");
972 tty->print_cr("Got error: %s", error_msg);
973 return -1;
974 }
975
976 // Pattern works - now check if it matches
977 int result = m->matches(mh);
978 delete m;
979 assert(result == 0 || result == 1, "Result out of range");
980 return result;
981 WB_END
982
983 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
984 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
985 CHECK_JNI_EXCEPTION(env);
986 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
987 MutexLockerEx mu(Compile_lock);
988 MethodData* mdo = mh->method_data();
989 MethodCounters* mcs = mh->method_counters();
990
991 if (mdo != NULL) {
992 mdo->init();
993 ResourceMark rm;
994 int arg_count = mdo->method()->size_of_parameters();
995 for (int i = 0; i < arg_count; i++) {
996 mdo->set_arg_modified(i, 0);
997 }
998 MutexLockerEx mu(mdo->extra_data_lock());
999 mdo->clean_method_data(/*always_clean*/true);
1000 }
1001
1002 mh->clear_not_c1_compilable();
1003 mh->clear_not_c2_compilable();
1004 mh->clear_not_c2_osr_compilable();
1005 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1006 if (mcs != NULL) {
1007 mcs->backedge_counter()->init();
1008 mcs->invocation_counter()->init();
1009 mcs->set_interpreter_invocation_count(0);
1010 mcs->set_interpreter_throwout_count(0);
1011
1012 #ifdef TIERED
1013 mcs->set_rate(0.0F);
1014 mh->set_prev_event_count(0);
1015 mh->set_prev_time(0);
1016 #endif
1017 }
1018 WB_END
1019
1020 template <typename T>
1021 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAt)(const char*, T*, bool, bool)) {
1022 if (name == NULL) {
1023 return false;
1024 }
1025 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1026 const char* flag_name = env->GetStringUTFChars(name, NULL);
1027 CHECK_JNI_EXCEPTION_(env, false);
1028 JVMFlag::Error result = (*TAt)(flag_name, value, true, true);
1029 env->ReleaseStringUTFChars(name, flag_name);
1030 return (result == JVMFlag::SUCCESS);
1031 }
1032
1033 template <typename T>
1034 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, JVMFlag::Error (*TAtPut)(const char*, T*, JVMFlag::Flags)) {
1035 if (name == NULL) {
1036 return false;
1037 }
1038 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1039 const char* flag_name = env->GetStringUTFChars(name, NULL);
1040 CHECK_JNI_EXCEPTION_(env, false);
1041 JVMFlag::Error result = (*TAtPut)(flag_name, value, JVMFlag::INTERNAL);
1042 env->ReleaseStringUTFChars(name, flag_name);
1043 return (result == JVMFlag::SUCCESS);
1044 }
1045
1046 template <typename T>
1047 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1048 ResourceMark rm(thread);
1049 jclass clazz = env->FindClass(name->as_C_string());
1050 CHECK_JNI_EXCEPTION_(env, NULL);
1051 jmethodID methodID = env->GetStaticMethodID(clazz,
1052 vmSymbols::valueOf_name()->as_C_string(),
1053 sig->as_C_string());
1054 CHECK_JNI_EXCEPTION_(env, NULL);
1055 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1056 CHECK_JNI_EXCEPTION_(env, NULL);
1057 return result;
1058 }
1059
1060 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1061 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1062 }
1063 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1064 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1065 }
1066 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1067 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1068 }
1069 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1070 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1071 }*/
1072 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1073 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1074 }
1075
1076 static JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1077 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1078 const char* flag_name = env->GetStringUTFChars(name, NULL);
1079 CHECK_JNI_EXCEPTION_(env, NULL);
1080 JVMFlag* result = JVMFlag::find_flag(flag_name, strlen(flag_name), true, true);
1081 env->ReleaseStringUTFChars(name, flag_name);
1082 return result;
1083 }
1084
1085 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1086 JVMFlag* flag = getVMFlag(thread, env, name);
1087 return (flag != NULL) && flag->is_constant_in_binary();
1088 WB_END
1089
1090 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1091 JVMFlag* flag = getVMFlag(thread, env, name);
1092 return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
1093 WB_END
1094
1095 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1096 bool result;
1097 if (GetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAt)) {
1098 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1099 return booleanBox(thread, env, result);
1100 }
1101 return NULL;
1102 WB_END
1103
1104 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1105 int result;
1106 if (GetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAt)) {
1107 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1108 return longBox(thread, env, result);
1109 }
1110 return NULL;
1111 WB_END
1112
1113 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1114 uint result;
1115 if (GetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAt)) {
1116 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1117 return longBox(thread, env, result);
1118 }
1119 return NULL;
1120 WB_END
1121
1122 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1123 intx result;
1124 if (GetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAt)) {
1125 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1126 return longBox(thread, env, result);
1127 }
1128 return NULL;
1129 WB_END
1130
1131 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1132 uintx result;
1133 if (GetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAt)) {
1134 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1135 return longBox(thread, env, result);
1136 }
1137 return NULL;
1138 WB_END
1139
1140 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1141 uint64_t result;
1142 if (GetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAt)) {
1143 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1144 return longBox(thread, env, result);
1145 }
1146 return NULL;
1147 WB_END
1148
1149 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1150 size_t result;
1151 if (GetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAt)) {
1152 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1153 return longBox(thread, env, result);
1154 }
1155 return NULL;
1156 WB_END
1157
1158 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1159 double result;
1160 if (GetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAt)) {
1161 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1162 return doubleBox(thread, env, result);
1163 }
1164 return NULL;
1165 WB_END
1166
1167 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1168 ccstr ccstrResult;
1169 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAt)) {
1170 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1171 jstring result = env->NewStringUTF(ccstrResult);
1172 CHECK_JNI_EXCEPTION_(env, NULL);
1173 return result;
1174 }
1175 return NULL;
1176 WB_END
1177
1178 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1179 bool result = value == JNI_TRUE ? true : false;
1180 SetVMFlag <bool> (thread, env, name, &result, &JVMFlag::boolAtPut);
1181 WB_END
1182
1183 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1184 int result = value;
1185 SetVMFlag <int> (thread, env, name, &result, &JVMFlag::intAtPut);
1186 WB_END
1187
1188 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1189 uint result = value;
1190 SetVMFlag <uint> (thread, env, name, &result, &JVMFlag::uintAtPut);
1191 WB_END
1192
1193 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1194 intx result = value;
1195 SetVMFlag <intx> (thread, env, name, &result, &JVMFlag::intxAtPut);
1196 WB_END
1197
1198 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1199 uintx result = value;
1200 SetVMFlag <uintx> (thread, env, name, &result, &JVMFlag::uintxAtPut);
1201 WB_END
1202
1203 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1204 uint64_t result = value;
1205 SetVMFlag <uint64_t> (thread, env, name, &result, &JVMFlag::uint64_tAtPut);
1206 WB_END
1207
1208 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1209 size_t result = value;
1210 SetVMFlag <size_t> (thread, env, name, &result, &JVMFlag::size_tAtPut);
1211 WB_END
1212
1213 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1214 double result = value;
1215 SetVMFlag <double> (thread, env, name, &result, &JVMFlag::doubleAtPut);
1216 WB_END
1217
1218 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1219 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1220 const char* ccstrValue;
1221 if (value == NULL) {
1222 ccstrValue = NULL;
1223 }
1224 else {
1225 ccstrValue = env->GetStringUTFChars(value, NULL);
1226 CHECK_JNI_EXCEPTION(env);
1227 }
1228 ccstr ccstrResult = ccstrValue;
1229 bool needFree;
1230 {
1231 ThreadInVMfromNative ttvfn(thread); // back to VM
1232 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &JVMFlag::ccstrAtPut);
1233 }
1234 if (value != NULL) {
1235 env->ReleaseStringUTFChars(value, ccstrValue);
1236 }
1237 if (needFree) {
1238 FREE_C_HEAP_ARRAY(char, ccstrResult);
1239 }
1240 WB_END
1241
1242 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1243 WhiteBox::compilation_locked = true;
1244 WB_END
1245
1246 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1247 MonitorLockerEx mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1248 WhiteBox::compilation_locked = false;
1249 mo.notify_all();
1250 WB_END
1251
1252 WB_ENTRY(void, WB_ForceNMethodSweep(JNIEnv* env, jobject o))
1253 // Force a code cache sweep and block until it finished
1254 NMethodSweeper::force_sweep();
1255 WB_END
1256
1257 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1258 ResourceMark rm(THREAD);
1259 int len;
1260 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1261 return (StringTable::lookup(name, len) != NULL);
1262 WB_END
1263
1264 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1265 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1266 Universe::heap()->collect(GCCause::_wb_full_gc);
1267 #if INCLUDE_G1GC
1268 if (UseG1GC) {
1269 // Needs to be cleared explicitly for G1
1270 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1271 }
1272 #endif // INCLUDE_G1GC
1273 WB_END
1274
1275 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1276 Universe::heap()->collect(GCCause::_wb_young_gc);
1277 WB_END
1278
1279 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1280 // static+volatile in order to force the read to happen
1281 // (not be eliminated by the compiler)
1282 static char c;
1283 static volatile char* p;
1284
1285 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
1286 if (p == NULL) {
1287 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1288 }
1289
1290 c = *p;
1291 WB_END
1292
1293 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1294 const char* features = VM_Version::features_string();
1295 ThreadToNativeFromVM ttn(thread);
1296 jstring features_string = env->NewStringUTF(features);
1297
1298 CHECK_JNI_EXCEPTION_(env, NULL);
1299
1300 return features_string;
1301 WB_END
1302
1303 int WhiteBox::get_blob_type(const CodeBlob* code) {
1304 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1305 if (code->is_aot()) {
1306 return -1;
1307 }
1308 return CodeCache::get_code_heap(code)->code_blob_type();
1309 }
1310
1311 CodeHeap* WhiteBox::get_code_heap(int blob_type) {
1312 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1313 return CodeCache::get_code_heap(blob_type);
1314 }
1315
1316 struct CodeBlobStub {
1317 CodeBlobStub(const CodeBlob* blob) :
1318 name(os::strdup(blob->name())),
1319 size(blob->size()),
1320 blob_type(WhiteBox::get_blob_type(blob)),
1321 address((jlong) blob) { }
1322 ~CodeBlobStub() { os::free((void*) name); }
1323 const char* const name;
1324 const jint size;
1325 const jint blob_type;
1326 const jlong address;
1327 };
1328
1329 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1330 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1331 CHECK_JNI_EXCEPTION_(env, NULL);
1332 jobjectArray result = env->NewObjectArray(4, clazz, NULL);
1333
1334 jstring name = env->NewStringUTF(cb->name);
1335 CHECK_JNI_EXCEPTION_(env, NULL);
1336 env->SetObjectArrayElement(result, 0, name);
1337
1338 jobject obj = integerBox(thread, env, cb->size);
1339 CHECK_JNI_EXCEPTION_(env, NULL);
1340 env->SetObjectArrayElement(result, 1, obj);
1341
1342 obj = integerBox(thread, env, cb->blob_type);
1343 CHECK_JNI_EXCEPTION_(env, NULL);
1344 env->SetObjectArrayElement(result, 2, obj);
1345
1346 obj = longBox(thread, env, cb->address);
1347 CHECK_JNI_EXCEPTION_(env, NULL);
1348 env->SetObjectArrayElement(result, 3, obj);
1349
1350 return result;
1351 }
1352
1353 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1354 ResourceMark rm(THREAD);
1355 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1356 CHECK_JNI_EXCEPTION_(env, NULL);
1357 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1358 CompiledMethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1359 jobjectArray result = NULL;
1360 if (code == NULL) {
1361 return result;
1362 }
1363 int comp_level = code->comp_level();
1364 int insts_size = comp_level == CompLevel_aot ? code->code_end() - code->code_begin() : code->insts_size();
1365
1366 ThreadToNativeFromVM ttn(thread);
1367 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1368 CHECK_JNI_EXCEPTION_(env, NULL);
1369 result = env->NewObjectArray(5, clazz, NULL);
1370 if (result == NULL) {
1371 return result;
1372 }
1373
1374 CodeBlobStub stub(code);
1375 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1376 CHECK_JNI_EXCEPTION_(env, NULL);
1377 env->SetObjectArrayElement(result, 0, codeBlob);
1378
1379 jobject level = integerBox(thread, env, comp_level);
1380 CHECK_JNI_EXCEPTION_(env, NULL);
1381 env->SetObjectArrayElement(result, 1, level);
1382
1383 jbyteArray insts = env->NewByteArray(insts_size);
1384 CHECK_JNI_EXCEPTION_(env, NULL);
1385 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1386 env->SetObjectArrayElement(result, 2, insts);
1387
1388 jobject id = integerBox(thread, env, code->compile_id());
1389 CHECK_JNI_EXCEPTION_(env, NULL);
1390 env->SetObjectArrayElement(result, 3, id);
1391
1392 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1393 CHECK_JNI_EXCEPTION_(env, NULL);
1394 env->SetObjectArrayElement(result, 4, entry_point);
1395
1396 return result;
1397 WB_END
1398
1399 CodeBlob* WhiteBox::allocate_code_blob(int size, int blob_type) {
1400 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1401 BufferBlob* blob;
1402 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1403 if (full_size < size) {
1404 full_size += align_up(size - full_size, oopSize);
1405 }
1406 {
1407 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1408 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1409 if (blob != NULL) {
1410 ::new (blob) BufferBlob("WB::DummyBlob", full_size);
1411 }
1412 }
1413 // Track memory usage statistic after releasing CodeCache_lock
1414 MemoryService::track_code_cache_memory_usage();
1415 return blob;
1416 }
1417
1418 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1419 if (size < 0) {
1420 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1421 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1422 }
1423 return (jlong) WhiteBox::allocate_code_blob(size, blob_type);
1424 WB_END
1425
1426 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1427 if (addr == 0) {
1428 return;
1429 }
1430 BufferBlob::free((BufferBlob*) addr);
1431 WB_END
1432
1433 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1434 ResourceMark rm;
1435 GrowableArray<CodeBlobStub*> blobs;
1436 {
1437 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1438 CodeHeap* heap = WhiteBox::get_code_heap(blob_type);
1439 if (heap == NULL) {
1440 return NULL;
1441 }
1442 for (CodeBlob* cb = (CodeBlob*) heap->first();
1443 cb != NULL; cb = (CodeBlob*) heap->next(cb)) {
1444 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1445 new (stub) CodeBlobStub(cb);
1446 blobs.append(stub);
1447 }
1448 }
1449 if (blobs.length() == 0) {
1450 return NULL;
1451 }
1452 ThreadToNativeFromVM ttn(thread);
1453 jobjectArray result = NULL;
1454 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1455 CHECK_JNI_EXCEPTION_(env, NULL);
1456 result = env->NewObjectArray(blobs.length(), clazz, NULL);
1457 CHECK_JNI_EXCEPTION_(env, NULL);
1458 if (result == NULL) {
1459 return result;
1460 }
1461 int i = 0;
1462 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1463 it != blobs.end(); ++it) {
1464 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1465 CHECK_JNI_EXCEPTION_(env, NULL);
1466 env->SetObjectArrayElement(result, i, obj);
1467 CHECK_JNI_EXCEPTION_(env, NULL);
1468 ++i;
1469 }
1470 return result;
1471 WB_END
1472
1473 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1474 return CompileBroker::get_compilation_activity_mode();
1475 WB_END
1476
1477 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1478 if (addr == 0) {
1479 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1480 "WB_GetCodeBlob: addr is null");
1481 }
1482 ThreadToNativeFromVM ttn(thread);
1483 CodeBlobStub stub((CodeBlob*) addr);
1484 return codeBlob2objectArray(thread, env, &stub);
1485 WB_END
1486
1487 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1488 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1489 CHECK_JNI_EXCEPTION_(env, 0);
1490 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1491 return (jlong) mh->method_data();
1492 WB_END
1493
1494 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1495 return (jlong) Thread::current()->stack_size();
1496 WB_END
1497
1498 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1499 JavaThread* t = JavaThread::current();
1500 return (jlong) t->stack_available(os::current_stack_pointer()) - (jlong)JavaThread::stack_shadow_zone_size();
1501 WB_END
1502
1503
1504 int WhiteBox::array_bytes_to_length(size_t bytes) {
1505 return Array<u1>::bytes_to_length(bytes);
1506 }
1507
1508 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1509 if (size < 0) {
1510 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1511 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1512 }
1513
1514 oop class_loader_oop = JNIHandles::resolve(class_loader);
1515 ClassLoaderData* cld = class_loader_oop != NULL
1516 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1517 : ClassLoaderData::the_null_class_loader_data();
1518
1519 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1520
1521 return (jlong)(uintptr_t)metadata;
1522 WB_END
1523
1524 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
1525 oop class_loader_oop = JNIHandles::resolve(class_loader);
1526 ClassLoaderData* cld = class_loader_oop != NULL
1527 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1528 : ClassLoaderData::the_null_class_loader_data();
1529
1530 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
1531 WB_END
1532
1533 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1534 jstring version, jstring location, jobjectArray packages))
1535 ResourceMark rm(THREAD);
1536
1537 objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages));
1538 objArrayHandle packages_h(THREAD, packages_oop);
1539 int num_packages = (packages_h == NULL ? 0 : packages_h->length());
1540
1541 char** pkgs = NULL;
1542 if (num_packages > 0) {
1543 pkgs = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char*, num_packages);
1544 for (int x = 0; x < num_packages; x++) {
1545 oop pkg_str = packages_h->obj_at(x);
1546 if (pkg_str == NULL || !pkg_str->is_a(SystemDictionary::String_klass())) {
1547 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
1548 err_msg("Bad package name"));
1549 }
1550 pkgs[x] = java_lang_String::as_utf8_string(pkg_str);
1551 }
1552 }
1553 Modules::define_module(module, is_open, version, location, (const char* const*)pkgs, num_packages, CHECK);
1554 WB_END
1555
1556 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1557 ResourceMark rm(THREAD);
1558 char* package_name = NULL;
1559 if (package != NULL) {
1560 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1561 }
1562 Modules::add_module_exports_qualified(from_module, package_name, to_module, CHECK);
1563 WB_END
1564
1565 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1566 ResourceMark rm(THREAD);
1567 char* package_name = NULL;
1568 if (package != NULL) {
1569 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1570 }
1571 Modules::add_module_exports_to_all_unnamed(module, package_name, CHECK);
1572 WB_END
1573
1574 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1575 ResourceMark rm(THREAD);
1576 char* package_name = NULL;
1577 if (package != NULL) {
1578 package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package));
1579 }
1580 Modules::add_module_exports(module, package_name, NULL, CHECK);
1581 WB_END
1582
1583 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1584 Modules::add_reads_module(from_module, source_module, CHECK);
1585 WB_END
1586
1587 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1588 if (inc < 0) {
1589 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1590 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1591 }
1592
1593 jlong max_size_t = (jlong) ((size_t) -1);
1594 if (inc > max_size_t) {
1595 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1596 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1597 }
1598
1599 size_t new_cap_until_GC = 0;
1600 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1601 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1602 if (!success) {
1603 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1604 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1605 "due to contention with another thread");
1606 }
1607 return (jlong) new_cap_until_GC;
1608 WB_END
1609
1610 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1611 return (jlong) MetaspaceGC::capacity_until_GC();
1612 WB_END
1613
1614 WB_ENTRY(jboolean, WB_MetaspaceShouldConcurrentCollect(JNIEnv* env, jobject wb))
1615 return MetaspaceGC::should_concurrent_collect();
1616 WB_END
1617
1618 WB_ENTRY(jlong, WB_MetaspaceReserveAlignment(JNIEnv* env, jobject wb))
1619 return (jlong)Metaspace::reserve_alignment();
1620 WB_END
1621
1622 WB_ENTRY(void, WB_AssertMatchingSafepointCalls(JNIEnv* env, jobject o, jboolean mutexSafepointValue, jboolean attemptedNoSafepointValue))
1623 Monitor::SafepointCheckRequired sfpt_check_required = mutexSafepointValue ?
1624 Monitor::_safepoint_check_always :
1625 Monitor::_safepoint_check_never;
1626 MutexLockerEx ml(new Mutex(Mutex::leaf, "SFPT_Test_lock", true, sfpt_check_required),
1627 attemptedNoSafepointValue == JNI_TRUE);
1628 WB_END
1629
1630 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1631 oop obj_oop = JNIHandles::resolve(obj);
1632 return (jboolean) obj_oop->mark()->has_monitor();
1633 WB_END
1634
1635 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1636 VM_ForceSafepoint force_safepoint_op;
1637 VMThread::execute(&force_safepoint_op);
1638 WB_END
1639
1640 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1641 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1642 return (jlong) ik->constants();
1643 WB_END
1644
1645 WB_ENTRY(jint, WB_GetConstantPoolCacheIndexTag(JNIEnv* env, jobject wb))
1646 return ConstantPool::CPCACHE_INDEX_TAG;
1647 WB_END
1648
1649 WB_ENTRY(jint, WB_GetConstantPoolCacheLength(JNIEnv* env, jobject wb, jclass klass))
1650 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1651 ConstantPool* cp = ik->constants();
1652 if (cp->cache() == NULL) {
1653 return -1;
1654 }
1655 return cp->cache()->length();
1656 WB_END
1657
1658 WB_ENTRY(jint, WB_ConstantPoolRemapInstructionOperandFromCache(JNIEnv* env, jobject wb, jclass klass, jint index))
1659 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1660 ConstantPool* cp = ik->constants();
1661 if (cp->cache() == NULL) {
1662 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), "Constant pool does not have a cache");
1663 }
1664 jint cpci = index;
1665 jint cpciTag = ConstantPool::CPCACHE_INDEX_TAG;
1666 if (cpciTag > cpci || cpci >= cp->cache()->length() + cpciTag) {
1667 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool cache index is out of range");
1668 }
1669 jint cpi = cp->remap_instruction_operand_from_cache(cpci);
1670 return cpi;
1671 WB_END
1672
1673 WB_ENTRY(jint, WB_ConstantPoolEncodeIndyIndex(JNIEnv* env, jobject wb, jint index))
1674 return ConstantPool::encode_invokedynamic_index(index);
1675 WB_END
1676
1677 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1678 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1679 VMThread::execute(&clear_ics);
1680 WB_END
1681
1682 template <typename T>
1683 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1684 assert(value != NULL, "sanity");
1685 if (method == NULL || name == NULL) {
1686 return false;
1687 }
1688 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1689 CHECK_JNI_EXCEPTION_(env, false);
1690 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1691 // can't be in VM when we call JNI
1692 ThreadToNativeFromVM ttnfv(thread);
1693 const char* flag_name = env->GetStringUTFChars(name, NULL);
1694 CHECK_JNI_EXCEPTION_(env, false);
1695 bool result = CompilerOracle::has_option_value(mh, flag_name, *value);
1696 env->ReleaseStringUTFChars(name, flag_name);
1697 return result;
1698 }
1699
1700 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1701 bool result;
1702 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
1703 // can't be in VM when we call JNI
1704 ThreadToNativeFromVM ttnfv(thread);
1705 return booleanBox(thread, env, result);
1706 }
1707 return NULL;
1708 WB_END
1709
1710 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1711 intx result;
1712 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
1713 // can't be in VM when we call JNI
1714 ThreadToNativeFromVM ttnfv(thread);
1715 return longBox(thread, env, result);
1716 }
1717 return NULL;
1718 WB_END
1719
1720 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1721 uintx result;
1722 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
1723 // can't be in VM when we call JNI
1724 ThreadToNativeFromVM ttnfv(thread);
1725 return longBox(thread, env, result);
1726 }
1727 return NULL;
1728 WB_END
1729
1730 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1731 double result;
1732 if (GetMethodOption <double> (thread, env, method, name, &result)) {
1733 // can't be in VM when we call JNI
1734 ThreadToNativeFromVM ttnfv(thread);
1735 return doubleBox(thread, env, result);
1736 }
1737 return NULL;
1738 WB_END
1739
1740 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
1741 ccstr ccstrResult;
1742 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
1743 // can't be in VM when we call JNI
1744 ThreadToNativeFromVM ttnfv(thread);
1745 jstring result = env->NewStringUTF(ccstrResult);
1746 CHECK_JNI_EXCEPTION_(env, NULL);
1747 return result;
1748 }
1749 return NULL;
1750 WB_END
1751
1752 WB_ENTRY(jboolean, WB_IsShared(JNIEnv* env, jobject wb, jobject obj))
1753 oop obj_oop = JNIHandles::resolve(obj);
1754 return MetaspaceShared::is_archive_object(obj_oop);
1755 WB_END
1756
1757 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
1758 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1759 WB_END
1760
1761 WB_ENTRY(jboolean, WB_AreSharedStringsIgnored(JNIEnv* env))
1762 return !StringTable::shared_string_mapped();
1763 WB_END
1764
1765 WB_ENTRY(jobject, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass clazz))
1766 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1767 if (k->is_instance_klass()) {
1768 InstanceKlass *ik = InstanceKlass::cast(k);
1769 ConstantPool *cp = ik->constants();
1770 objArrayOop refs = cp->resolved_references();
1771 return (jobject)JNIHandles::make_local(env, refs);
1772 } else {
1773 return NULL;
1774 }
1775 WB_END
1776
1777 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
1778 return MetaspaceShared::open_archive_heap_region_mapped();
1779 WB_END
1780
1781 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
1782 #if INCLUDE_CDS
1783 # ifdef _LP64
1784 if (!UseCompressedOops || !UseCompressedClassPointers) {
1785 // On 64-bit VMs, CDS is supported only with compressed oops/pointers
1786 return false;
1787 }
1788 # endif // _LP64
1789 return true;
1790 #else
1791 return false;
1792 #endif // INCLUDE_CDS
1793 WB_END
1794
1795 WB_ENTRY(jboolean, WB_IsJavaHeapArchiveSupported(JNIEnv* env))
1796 return MetaspaceShared::is_heap_object_archiving_allowed();
1797 WB_END
1798
1799
1800 WB_ENTRY(jboolean, WB_IsJFRIncludedInVmBuild(JNIEnv* env))
1801 #if INCLUDE_JFR
1802 return true;
1803 #else
1804 return false;
1805 #endif // INCLUDE_JFR
1806 WB_END
1807
1808 #if INCLUDE_CDS
1809
1810 WB_ENTRY(jint, WB_GetOffsetForName(JNIEnv* env, jobject o, jstring name))
1811 ResourceMark rm;
1812 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
1813 int result = CDSOffsets::find_offset(c_name);
1814 return (jint)result;
1815 WB_END
1816
1817 #endif // INCLUDE_CDS
1818
1819 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
1820 class TraceSelfClosure : public ThreadClosure {
1821 jint _num_threads_completed;
1822
1823 void do_thread(Thread* th) {
1824 assert(th->is_Java_thread(), "sanity");
1825 JavaThread* jt = (JavaThread*)th;
1826 ResourceMark rm;
1827
1828 jt->print_on(tty);
1829 jt->print_stack_on(tty);
1830 tty->cr();
1831 Atomic::inc(&_num_threads_completed);
1832 }
1833
1834 public:
1835 TraceSelfClosure() : _num_threads_completed(0) {}
1836
1837 jint num_threads_completed() const { return _num_threads_completed; }
1838 };
1839 TraceSelfClosure tsc;
1840
1841 if (all_threads) {
1842 Handshake::execute(&tsc);
1843 } else {
1844 oop thread_oop = JNIHandles::resolve(thread_handle);
1845 if (thread_oop != NULL) {
1846 JavaThread* target = java_lang_Thread::thread(thread_oop);
1847 Handshake::execute(&tsc, target);
1848 }
1849 }
1850 return tsc.num_threads_completed();
1851 WB_END
1852
1853 //Some convenience methods to deal with objects from java
1854 int WhiteBox::offset_for_field(const char* field_name, oop object,
1855 Symbol* signature_symbol) {
1856 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
1857 Thread* THREAD = Thread::current();
1858
1859 //Get the class of our object
1860 Klass* arg_klass = object->klass();
1861 //Turn it into an instance-klass
1862 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
1863
1864 //Create symbols to look for in the class
1865 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
1866 THREAD);
1867
1868 //To be filled in with an offset of the field we're looking for
1869 fieldDescriptor fd;
1870
1871 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
1872 if (res == NULL) {
1873 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
1874 name_symbol->as_C_string());
1875 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
1876 }
1877
1878 //fetch the field at the offset we've found
1879 int dest_offset = fd.offset();
1880
1881 return dest_offset;
1882 }
1883
1884
1885 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
1886 int offset = offset_for_field(field_name, object,
1887 vmSymbols::string_signature());
1888 oop string = object->obj_field(offset);
1889 if (string == NULL) {
1890 return NULL;
1891 }
1892 const char* ret = java_lang_String::as_utf8_string(string);
1893 return ret;
1894 }
1895
1896 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
1897 int offset =
1898 offset_for_field(field_name, object, vmSymbols::bool_signature());
1899 bool ret = (object->bool_field(offset) == JNI_TRUE);
1900 return ret;
1901 }
1902
1903 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
1904 ResourceMark rm;
1905 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1906
1907 // one by one registration natives for exception catching
1908 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
1909 CHECK_JNI_EXCEPTION(env);
1910 for (int i = 0, n = method_count; i < n; ++i) {
1911 // Skip dummy entries
1912 if (method_array[i].fnPtr == NULL) continue;
1913 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
1914 jthrowable throwable_obj = env->ExceptionOccurred();
1915 if (throwable_obj != NULL) {
1916 env->ExceptionClear();
1917 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1918 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1919 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1920 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1921 method_array[i].name, method_array[i].signature);
1922 }
1923 } else {
1924 // Registration failed unexpectedly.
1925 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1926 method_array[i].name, method_array[i].signature);
1927 env->UnregisterNatives(wbclass);
1928 break;
1929 }
1930 }
1931 }
1932 }
1933
1934 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
1935 // can't be in VM when we call JNI
1936 ThreadToNativeFromVM ttnfv(thread);
1937 const char* dir = env->GetStringUTFChars(compDirect, NULL);
1938 CHECK_JNI_EXCEPTION_(env, 0);
1939 int ret;
1940 {
1941 ThreadInVMfromNative ttvfn(thread); // back to VM
1942 ret = DirectivesParser::parse_string(dir, tty);
1943 }
1944 env->ReleaseStringUTFChars(compDirect, dir);
1945 // -1 for error parsing directive. Return 0 as number of directives added.
1946 if (ret == -1) {
1947 ret = 0;
1948 }
1949 return (jint) ret;
1950 WB_END
1951
1952 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
1953 DirectivesStack::pop(count);
1954 WB_END
1955
1956 // Checks that the library libfile has the noexecstack bit set.
1957 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1958 jboolean ret = false;
1959 #ifdef LINUX
1960 // Can't be in VM when we call JNI.
1961 ThreadToNativeFromVM ttnfv(thread);
1962 const char* lf = env->GetStringUTFChars(libfile, NULL);
1963 CHECK_JNI_EXCEPTION_(env, 0);
1964 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
1965 env->ReleaseStringUTFChars(libfile, lf);
1966 #endif
1967 return ret;
1968 WB_END
1969
1970 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1971 LINUX_ONLY(return OSContainer::is_containerized();)
1972 return false;
1973 WB_END
1974
1975 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1976 os::print_os_info(tty);
1977 WB_END
1978
1979 // Elf decoder
1980 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
1981 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
1982 ElfFile::_do_not_cache_elf_section = true;
1983 #endif
1984 WB_END
1985
1986 WB_ENTRY(jint, WB_ResolvedMethodRemovedCount(JNIEnv* env, jobject o))
1987 return (jint) ResolvedMethodTable::removed_entries_count();
1988 WB_END
1989
1990 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
1991 return (jint) SystemDictionary::pd_cache_table()->removed_entries_count();
1992 WB_END
1993
1994 #define CC (char*)
1995
1996 static JNINativeMethod methods[] = {
1997 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1998 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1999 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2000 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2001 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2002 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2003 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2004 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2005 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2006 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
2007 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2008 {CC"parseCommandLine0",
2009 CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2010 (void*) &WB_ParseCommandLine
2011 },
2012 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2013 (void*)&WB_AddToBootstrapClassLoaderSearch},
2014 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2015 (void*)&WB_AddToSystemClassLoaderSearch},
2016 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2017 (void*)&WB_GetCompressedOopsMaxHeapSize},
2018 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2019 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
2020 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2021 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2022 #if INCLUDE_CDS
2023 {CC"getOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetOffsetForName},
2024 #endif
2025 #if INCLUDE_G1GC
2026 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2027 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2028 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2029 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2030 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2031 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2032 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2033 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
2034 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2035 (void*)&WB_G1AuxiliaryMemoryUsage },
2036 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2037 #endif // INCLUDE_G1GC
2038 #if INCLUDE_PARALLELGC
2039 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2040 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2041 #endif
2042 #if INCLUDE_NMT
2043 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2044 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2045 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2046 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2047 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2048 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2049 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2050 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2051 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
2052 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2053 #endif // INCLUDE_NMT
2054 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2055 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2056 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2057 (void*)&WB_DeoptimizeMethod },
2058 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2059 (void*)&WB_IsMethodCompiled },
2060 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2061 (void*)&WB_IsMethodCompilable},
2062 {CC"isMethodQueuedForCompilation0",
2063 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2064 {CC"isIntrinsicAvailable0",
2065 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2066 (void*)&WB_IsIntrinsicAvailable},
2067 {CC"makeMethodNotCompilable0",
2068 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2069 {CC"testSetDontInlineMethod0",
2070 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2071 {CC"getMethodCompilationLevel0",
2072 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2073 {CC"getMethodEntryBci0",
2074 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2075 {CC"getCompileQueueSize",
2076 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2077 {CC"testSetForceInlineMethod0",
2078 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2079 {CC"enqueueMethodForCompilation0",
2080 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2081 {CC"enqueueInitializerForCompilation0",
2082 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2083 {CC"clearMethodState0",
2084 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2085 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2086 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2087 {CC"matchesMethod",
2088 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2089 (void*)&WB_MatchesMethod},
2090 {CC"matchesInline",
2091 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2092 (void*)&WB_MatchesInline},
2093 {CC"shouldPrintAssembly",
2094 CC"(Ljava/lang/reflect/Executable;I)Z",
2095 (void*)&WB_ShouldPrintAssembly},
2096
2097 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2098 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2099 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2100 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2101 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2102 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2103 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2104 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2105 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2106 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2107 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2108 (void*)&WB_SetStringVMFlag},
2109 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2110 (void*)&WB_GetBooleanVMFlag},
2111 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2112 (void*)&WB_GetIntVMFlag},
2113 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2114 (void*)&WB_GetUintVMFlag},
2115 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2116 (void*)&WB_GetIntxVMFlag},
2117 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2118 (void*)&WB_GetUintxVMFlag},
2119 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2120 (void*)&WB_GetUint64VMFlag},
2121 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2122 (void*)&WB_GetSizeTVMFlag},
2123 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2124 (void*)&WB_GetDoubleVMFlag},
2125 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2126 (void*)&WB_GetStringVMFlag},
2127 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2128 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2129 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2130 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2131 {CC"allocateMetaspace",
2132 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2133 {CC"freeMetaspace",
2134 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
2135 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2136 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2137 {CC"metaspaceShouldConcurrentCollect", CC"()Z", (void*)&WB_MetaspaceShouldConcurrentCollect },
2138 {CC"metaspaceReserveAlignment", CC"()J", (void*)&WB_MetaspaceReserveAlignment },
2139 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2140 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2141 (void*)&WB_GetNMethod },
2142 {CC"forceNMethodSweep", CC"()V", (void*)&WB_ForceNMethodSweep },
2143 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2144 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2145 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2146 {CC"getCompilationActivityMode",
2147 CC"()I", (void*)&WB_GetCompilationActivityMode},
2148 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2149 (void*)&WB_GetMethodData },
2150 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2151 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2152 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2153 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2154 (void*)&WB_DefineModule },
2155 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2156 (void*)&WB_AddModuleExports },
2157 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2158 (void*)&WB_AddReadsModule },
2159 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2160 (void*)&WB_AddModuleExportsToAllUnnamed },
2161 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2162 (void*)&WB_AddModuleExportsToAll },
2163 {CC"assertMatchingSafepointCalls", CC"(ZZ)V", (void*)&WB_AssertMatchingSafepointCalls },
2164 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2165 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2166 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2167 {CC"getConstantPoolCacheIndexTag0", CC"()I", (void*)&WB_GetConstantPoolCacheIndexTag},
2168 {CC"getConstantPoolCacheLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_GetConstantPoolCacheLength},
2169 {CC"remapInstructionOperandFromCPCache0",
2170 CC"(Ljava/lang/Class;I)I", (void*)&WB_ConstantPoolRemapInstructionOperandFromCache},
2171 {CC"encodeConstantPoolIndyIndex0",
2172 CC"(I)I", (void*)&WB_ConstantPoolEncodeIndyIndex},
2173 {CC"getMethodBooleanOption",
2174 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2175 (void*)&WB_GetMethodBooleaneOption},
2176 {CC"getMethodIntxOption",
2177 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2178 (void*)&WB_GetMethodIntxOption},
2179 {CC"getMethodUintxOption",
2180 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2181 (void*)&WB_GetMethodUintxOption},
2182 {CC"getMethodDoubleOption",
2183 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2184 (void*)&WB_GetMethodDoubleOption},
2185 {CC"getMethodStringOption",
2186 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2187 (void*)&WB_GetMethodStringOption},
2188 {CC"isShared", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsShared },
2189 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2190 {CC"areSharedStringsIgnored", CC"()Z", (void*)&WB_AreSharedStringsIgnored },
2191 {CC"getResolvedReferences", CC"(Ljava/lang/Class;)Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2192 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2193 {CC"isCDSIncludedInVmBuild", CC"()Z", (void*)&WB_IsCDSIncludedInVmBuild },
2194 {CC"isJFRIncludedInVmBuild", CC"()Z", (void*)&WB_IsJFRIncludedInVmBuild },
2195 {CC"isJavaHeapArchiveSupported", CC"()Z", (void*)&WB_IsJavaHeapArchiveSupported },
2196
2197 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2198 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2199 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2200 (void*)&WB_AddCompilerDirective },
2201 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2202 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2203 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2204 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2205 {CC"supportsConcurrentGCPhaseControl", CC"()Z", (void*)&WB_SupportsConcurrentGCPhaseControl},
2206 {CC"getConcurrentGCPhases", CC"()[Ljava/lang/String;",
2207 (void*)&WB_GetConcurrentGCPhases},
2208 {CC"requestConcurrentGCPhase0", CC"(Ljava/lang/String;)Z",
2209 (void*)&WB_RequestConcurrentGCPhase},
2210 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2211 (void*)&WB_CheckLibSpecifiesNoexecstack},
2212 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2213 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2214 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2215 {CC"resolvedMethodRemovedCount", CC"()I", (void*)&WB_ResolvedMethodRemovedCount },
2216 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2217 };
2218
2219
2220 #undef CC
2221
2222 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2223 {
2224 if (WhiteBoxAPI) {
2225 // Make sure that wbclass is loaded by the null classloader
2226 InstanceKlass* ik = InstanceKlass::cast(JNIHandles::resolve(wbclass)->klass());
2227 Handle loader(THREAD, ik->class_loader());
2228 if (loader.is_null()) {
2229 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2230 WhiteBox::set_used();
2231 }
2232 }
2233 }
2234 JVM_END