1 /*
2 * Copyright (c) 1999, 2016, 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 #include "ci/ciConstant.hpp"
27 #include "ci/ciEnv.hpp"
28 #include "ci/ciField.hpp"
29 #include "ci/ciInstance.hpp"
30 #include "ci/ciInstanceKlass.hpp"
31 #include "ci/ciMethod.hpp"
32 #include "ci/ciNullObject.hpp"
33 #include "ci/ciReplay.hpp"
34 #include "ci/ciUtilities.hpp"
35 #include "classfile/systemDictionary.hpp"
36 #include "classfile/vmSymbols.hpp"
37 #include "code/codeCache.hpp"
38 #include "code/scopeDesc.hpp"
39 #include "compiler/compileBroker.hpp"
40 #include "compiler/compileLog.hpp"
41 #include "compiler/disassembler.hpp"
42 #include "gc/shared/collectedHeap.inline.hpp"
43 #include "interpreter/linkResolver.hpp"
44 #include "memory/allocation.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "memory/resourceArea.hpp"
47 #include "memory/universe.inline.hpp"
48 #include "oops/methodData.hpp"
49 #include "oops/objArrayKlass.hpp"
50 #include "oops/objArrayOop.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "prims/jvmtiExport.hpp"
53 #include "runtime/init.hpp"
54 #include "runtime/reflection.hpp"
55 #include "runtime/sharedRuntime.hpp"
56 #include "runtime/thread.inline.hpp"
57 #include "trace/tracing.hpp"
58 #include "utilities/dtrace.hpp"
59 #include "utilities/macros.hpp"
60 #ifdef COMPILER1
61 #include "c1/c1_Runtime1.hpp"
62 #endif
63 #ifdef COMPILER2
64 #include "opto/runtime.hpp"
65 #endif
66
67 // ciEnv
68 //
69 // This class is the top level broker for requests from the compiler
70 // to the VM.
71
72 ciObject* ciEnv::_null_object_instance;
73
74 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
75 WK_KLASSES_DO(WK_KLASS_DEFN)
76 #undef WK_KLASS_DEFN
77
78 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
79 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
80 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
81
82 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
83 jobject ciEnv::_ArrayStoreException_handle = NULL;
84 jobject ciEnv::_ClassCastException_handle = NULL;
85
86 #ifndef PRODUCT
87 static bool firstEnv = true;
88 #endif /* PRODUCT */
89
90 // ------------------------------------------------------------------
91 // ciEnv::ciEnv
92 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter)
93 : _ciEnv_arena(mtCompiler) {
94 VM_ENTRY_MARK;
95
96 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
97 thread->set_env(this);
98 assert(ciEnv::current() == this, "sanity");
99
100 _oop_recorder = NULL;
101 _debug_info = NULL;
102 _dependencies = NULL;
103 _failure_reason = NULL;
104 _compilable = MethodCompilable;
105 _break_at_compile = false;
106 _compiler_data = NULL;
107 #ifndef PRODUCT
108 assert(!firstEnv, "not initialized properly");
109 #endif /* !PRODUCT */
110
111 _system_dictionary_modification_counter = system_dictionary_modification_counter;
112 _num_inlined_bytecodes = 0;
113 assert(task == NULL || thread->task() == task, "sanity");
114 _task = task;
115 _log = NULL;
116
117 // Temporary buffer for creating symbols and such.
118 _name_buffer = NULL;
119 _name_buffer_len = 0;
120
121 _arena = &_ciEnv_arena;
122 _factory = new (_arena) ciObjectFactory(_arena, 128);
123
124 // Preload commonly referenced system ciObjects.
125
126 // During VM initialization, these instances have not yet been created.
127 // Assertions ensure that these instances are not accessed before
128 // their initialization.
129
130 assert(Universe::is_fully_initialized(), "should be complete");
131
132 oop o = Universe::null_ptr_exception_instance();
133 assert(o != NULL, "should have been initialized");
134 _NullPointerException_instance = get_object(o)->as_instance();
135 o = Universe::arithmetic_exception_instance();
136 assert(o != NULL, "should have been initialized");
137 _ArithmeticException_instance = get_object(o)->as_instance();
138
139 _ArrayIndexOutOfBoundsException_instance = NULL;
140 _ArrayStoreException_instance = NULL;
141 _ClassCastException_instance = NULL;
142 _the_null_string = NULL;
143 _the_min_jint_string = NULL;
144
145 _jvmti_can_hotswap_or_post_breakpoint = false;
146 _jvmti_can_access_local_variables = false;
147 _jvmti_can_post_on_exceptions = false;
148 _jvmti_can_pop_frame = false;
149 }
150
151 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
152 ASSERT_IN_VM;
153
154 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
155 CompilerThread* current_thread = CompilerThread::current();
156 assert(current_thread->env() == NULL, "must be");
157 current_thread->set_env(this);
158 assert(ciEnv::current() == this, "sanity");
159
160 _oop_recorder = NULL;
161 _debug_info = NULL;
162 _dependencies = NULL;
163 _failure_reason = NULL;
164 _compilable = MethodCompilable_never;
165 _break_at_compile = false;
166 _compiler_data = NULL;
167 #ifndef PRODUCT
168 assert(firstEnv, "must be first");
169 firstEnv = false;
170 #endif /* !PRODUCT */
171
172 _system_dictionary_modification_counter = 0;
173 _num_inlined_bytecodes = 0;
174 _task = NULL;
175 _log = NULL;
176
177 // Temporary buffer for creating symbols and such.
178 _name_buffer = NULL;
179 _name_buffer_len = 0;
180
181 _arena = arena;
182 _factory = new (_arena) ciObjectFactory(_arena, 128);
183
184 // Preload commonly referenced system ciObjects.
185
186 // During VM initialization, these instances have not yet been created.
187 // Assertions ensure that these instances are not accessed before
188 // their initialization.
189
190 assert(Universe::is_fully_initialized(), "must be");
191
192 _NullPointerException_instance = NULL;
193 _ArithmeticException_instance = NULL;
194 _ArrayIndexOutOfBoundsException_instance = NULL;
195 _ArrayStoreException_instance = NULL;
196 _ClassCastException_instance = NULL;
197 _the_null_string = NULL;
198 _the_min_jint_string = NULL;
199
200 _jvmti_can_hotswap_or_post_breakpoint = false;
201 _jvmti_can_access_local_variables = false;
202 _jvmti_can_post_on_exceptions = false;
203 _jvmti_can_pop_frame = false;
204 }
205
206 ciEnv::~ciEnv() {
207 CompilerThread* current_thread = CompilerThread::current();
208 _factory->remove_symbols();
209 // Need safepoint to clear the env on the thread. RedefineClasses might
210 // be reading it.
211 GUARDED_VM_ENTRY(current_thread->set_env(NULL);)
212 }
213
214 // ------------------------------------------------------------------
215 // Cache Jvmti state
216 void ciEnv::cache_jvmti_state() {
217 VM_ENTRY_MARK;
218 // Get Jvmti capabilities under lock to get consistant values.
219 MutexLocker mu(JvmtiThreadState_lock);
220 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
221 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
222 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
223 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
224 }
225
226 bool ciEnv::should_retain_local_variables() const {
227 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame;
228 }
229
230 bool ciEnv::jvmti_state_changed() const {
231 if (!_jvmti_can_access_local_variables &&
232 JvmtiExport::can_access_local_variables()) {
233 return true;
234 }
235 if (!_jvmti_can_hotswap_or_post_breakpoint &&
236 JvmtiExport::can_hotswap_or_post_breakpoint()) {
237 return true;
238 }
239 if (!_jvmti_can_post_on_exceptions &&
240 JvmtiExport::can_post_on_exceptions()) {
241 return true;
242 }
243 if (!_jvmti_can_pop_frame &&
244 JvmtiExport::can_pop_frame()) {
245 return true;
246 }
247 return false;
248 }
249
250 // ------------------------------------------------------------------
251 // Cache DTrace flags
252 void ciEnv::cache_dtrace_flags() {
253 // Need lock?
254 _dtrace_extended_probes = ExtendedDTraceProbes;
255 if (_dtrace_extended_probes) {
256 _dtrace_monitor_probes = true;
257 _dtrace_method_probes = true;
258 _dtrace_alloc_probes = true;
259 } else {
260 _dtrace_monitor_probes = DTraceMonitorProbes;
261 _dtrace_method_probes = DTraceMethodProbes;
262 _dtrace_alloc_probes = DTraceAllocProbes;
263 }
264 }
265
266 // ------------------------------------------------------------------
267 // helper for lazy exception creation
268 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
269 VM_ENTRY_MARK;
270 if (handle == NULL) {
271 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
272 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
273 jobject objh = NULL;
274 if (!HAS_PENDING_EXCEPTION && k != NULL) {
275 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
276 if (!HAS_PENDING_EXCEPTION)
277 objh = JNIHandles::make_global(obj);
278 }
279 if (HAS_PENDING_EXCEPTION) {
280 CLEAR_PENDING_EXCEPTION;
281 } else {
282 handle = objh;
283 }
284 }
285 oop obj = JNIHandles::resolve(handle);
286 return obj == NULL? NULL: get_object(obj)->as_instance();
287 }
288
289 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
290 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
291 _ArrayIndexOutOfBoundsException_instance
292 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
293 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
294 }
295 return _ArrayIndexOutOfBoundsException_instance;
296 }
297 ciInstance* ciEnv::ArrayStoreException_instance() {
298 if (_ArrayStoreException_instance == NULL) {
299 _ArrayStoreException_instance
300 = get_or_create_exception(_ArrayStoreException_handle,
301 vmSymbols::java_lang_ArrayStoreException());
302 }
303 return _ArrayStoreException_instance;
304 }
305 ciInstance* ciEnv::ClassCastException_instance() {
306 if (_ClassCastException_instance == NULL) {
307 _ClassCastException_instance
308 = get_or_create_exception(_ClassCastException_handle,
309 vmSymbols::java_lang_ClassCastException());
310 }
311 return _ClassCastException_instance;
312 }
313
314 ciInstance* ciEnv::the_null_string() {
315 if (_the_null_string == NULL) {
316 VM_ENTRY_MARK;
317 _the_null_string = get_object(Universe::the_null_string())->as_instance();
318 }
319 return _the_null_string;
320 }
321
322 ciInstance* ciEnv::the_min_jint_string() {
323 if (_the_min_jint_string == NULL) {
324 VM_ENTRY_MARK;
325 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
326 }
327 return _the_min_jint_string;
328 }
329
330 // ------------------------------------------------------------------
331 // ciEnv::get_method_from_handle
332 ciMethod* ciEnv::get_method_from_handle(Method* method) {
333 VM_ENTRY_MARK;
334 return get_metadata(method)->as_method();
335 }
336
337 // ------------------------------------------------------------------
338 // ciEnv::array_element_offset_in_bytes
339 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
340 VM_ENTRY_MARK;
341 objArrayOop a = (objArrayOop)a_h->get_oop();
342 assert(a->is_objArray(), "");
343 int length = a->length();
344 oop o = o_h->get_oop();
345 for (int i = 0; i < length; i++) {
346 if (a->obj_at(i) == o) return i;
347 }
348 return -1;
349 }
350
351
352 // ------------------------------------------------------------------
353 // ciEnv::check_klass_accessiblity
354 //
355 // Note: the logic of this method should mirror the logic of
356 // ConstantPool::verify_constant_pool_resolve.
357 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
358 Klass* resolved_klass) {
359 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
360 return true;
361 }
362 if (accessing_klass->is_obj_array_klass()) {
363 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
364 }
365 if (!accessing_klass->is_instance_klass()) {
366 return true;
367 }
368
369 if (resolved_klass->is_objArray_klass()) {
370 // Find the element klass, if this is an array.
371 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
372 }
373 if (resolved_klass->is_instance_klass()) {
374 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
375 resolved_klass,
376 true) == Reflection::ACCESS_OK);
377 }
378 return true;
379 }
380
381 // ------------------------------------------------------------------
382 // ciEnv::get_klass_by_name_impl
383 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
384 const constantPoolHandle& cpool,
385 ciSymbol* name,
386 bool require_local) {
387 ASSERT_IN_VM;
388 EXCEPTION_CONTEXT;
389
390 // Now we need to check the SystemDictionary
391 Symbol* sym = name->get_symbol();
392 if (sym->byte_at(0) == 'L' &&
393 sym->byte_at(sym->utf8_length()-1) == ';') {
394 // This is a name from a signature. Strip off the trimmings.
395 // Call recursive to keep scope of strippedsym.
396 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
397 sym->utf8_length()-2,
398 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
399 ciSymbol* strippedname = get_symbol(strippedsym);
400 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
401 }
402
403 // Check for prior unloaded klass. The SystemDictionary's answers
404 // can vary over time but the compiler needs consistency.
405 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
406 if (unloaded_klass != NULL) {
407 if (require_local) return NULL;
408 return unloaded_klass;
409 }
410
411 Handle loader(THREAD, (oop)NULL);
412 Handle domain(THREAD, (oop)NULL);
413 if (accessing_klass != NULL) {
414 loader = Handle(THREAD, accessing_klass->loader());
415 domain = Handle(THREAD, accessing_klass->protection_domain());
416 }
417
418 // setup up the proper type to return on OOM
419 ciKlass* fail_type;
420 if (sym->byte_at(0) == '[') {
421 fail_type = _unloaded_ciobjarrayklass;
422 } else {
423 fail_type = _unloaded_ciinstance_klass;
424 }
425 KlassHandle found_klass;
426 {
427 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
428 MutexLocker ml(Compile_lock);
429 Klass* kls;
430 if (!require_local) {
431 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
432 KILL_COMPILE_ON_FATAL_(fail_type));
433 } else {
434 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
435 KILL_COMPILE_ON_FATAL_(fail_type));
436 }
437 found_klass = KlassHandle(THREAD, kls);
438 }
439
440 // If we fail to find an array klass, look again for its element type.
441 // The element type may be available either locally or via constraints.
442 // In either case, if we can find the element type in the system dictionary,
443 // we must build an array type around it. The CI requires array klasses
444 // to be loaded if their element klasses are loaded, except when memory
445 // is exhausted.
446 if (sym->byte_at(0) == '[' &&
447 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
448 // We have an unloaded array.
449 // Build it on the fly if the element class exists.
450 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
451 sym->utf8_length()-1,
452 KILL_COMPILE_ON_FATAL_(fail_type));
453
454 // Get element ciKlass recursively.
455 ciKlass* elem_klass =
456 get_klass_by_name_impl(accessing_klass,
457 cpool,
458 get_symbol(elem_sym),
459 require_local);
460 if (elem_klass != NULL && elem_klass->is_loaded()) {
461 // Now make an array for it
462 return ciObjArrayKlass::make_impl(elem_klass);
463 }
464 }
465
466 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
467 // Look inside the constant pool for pre-resolved class entries.
468 for (int i = cpool->length() - 1; i >= 1; i--) {
469 if (cpool->tag_at(i).is_klass()) {
470 Klass* kls = cpool->resolved_klass_at(i);
471 if (kls->name() == sym) {
472 found_klass = KlassHandle(THREAD, kls);
473 break;
474 }
475 }
476 }
477 }
478
479 if (found_klass() != NULL) {
480 // Found it. Build a CI handle.
481 return get_klass(found_klass());
482 }
483
484 if (require_local) return NULL;
485
486 // Not yet loaded into the VM, or not governed by loader constraints.
487 // Make a CI representative for it.
488 return get_unloaded_klass(accessing_klass, name);
489 }
490
491 // ------------------------------------------------------------------
492 // ciEnv::get_klass_by_name
493 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
494 ciSymbol* klass_name,
495 bool require_local) {
496 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
497 constantPoolHandle(),
498 klass_name,
499 require_local);)
500 }
501
502 // ------------------------------------------------------------------
503 // ciEnv::get_klass_by_index_impl
504 //
505 // Implementation of get_klass_by_index.
506 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
507 int index,
508 bool& is_accessible,
509 ciInstanceKlass* accessor) {
510 EXCEPTION_CONTEXT;
511 KlassHandle klass; // = NULL;
512 Symbol* klass_name = NULL;
513
514 if (cpool->tag_at(index).is_symbol()) {
515 klass_name = cpool->symbol_at(index);
516 } else {
517 // Check if it's resolved if it's not a symbol constant pool entry.
518 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index));
519 // Try to look it up by name.
520 if (klass.is_null()) {
521 klass_name = cpool->klass_name_at(index);
522 }
523 }
524
525 if (klass.is_null()) {
526 // Not found in constant pool. Use the name to do the lookup.
527 ciKlass* k = get_klass_by_name_impl(accessor,
528 cpool,
529 get_symbol(klass_name),
530 false);
531 // Calculate accessibility the hard way.
532 if (!k->is_loaded()) {
533 is_accessible = false;
534 } else if (k->loader() != accessor->loader() &&
535 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
536 // Loaded only remotely. Not linked yet.
537 is_accessible = false;
538 } else {
539 // Linked locally, and we must also check public/private, etc.
540 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
541 }
542 return k;
543 }
544
545 // Check for prior unloaded klass. The SystemDictionary's answers
546 // can vary over time but the compiler needs consistency.
547 ciSymbol* name = get_symbol(klass()->name());
548 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
549 if (unloaded_klass != NULL) {
550 is_accessible = false;
551 return unloaded_klass;
552 }
553
554 // It is known to be accessible, since it was found in the constant pool.
555 is_accessible = true;
556 return get_klass(klass());
557 }
558
559 // ------------------------------------------------------------------
560 // ciEnv::get_klass_by_index
561 //
562 // Get a klass from the constant pool.
563 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
564 int index,
565 bool& is_accessible,
566 ciInstanceKlass* accessor) {
567 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
568 }
569
570 // ------------------------------------------------------------------
571 // ciEnv::get_constant_by_index_impl
572 //
573 // Implementation of get_constant_by_index().
574 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
575 int pool_index, int cache_index,
576 ciInstanceKlass* accessor) {
577 bool ignore_will_link;
578 EXCEPTION_CONTEXT;
579 int index = pool_index;
580 if (cache_index >= 0) {
581 assert(index < 0, "only one kind of index at a time");
582 oop obj = cpool->resolved_references()->obj_at(cache_index);
583 if (obj != NULL) {
584 ciObject* ciobj = get_object(obj);
585 if (ciobj->is_array()) {
586 return ciConstant(T_ARRAY, ciobj);
587 } else {
588 assert(ciobj->is_instance(), "should be an instance");
589 return ciConstant(T_OBJECT, ciobj);
590 }
591 }
592 index = cpool->object_to_cp_index(cache_index);
593 }
594 constantTag tag = cpool->tag_at(index);
595 if (tag.is_int()) {
596 return ciConstant(T_INT, (jint)cpool->int_at(index));
597 } else if (tag.is_long()) {
598 return ciConstant((jlong)cpool->long_at(index));
599 } else if (tag.is_float()) {
600 return ciConstant((jfloat)cpool->float_at(index));
601 } else if (tag.is_double()) {
602 return ciConstant((jdouble)cpool->double_at(index));
603 } else if (tag.is_string()) {
604 oop string = NULL;
605 assert(cache_index >= 0, "should have a cache index");
606 if (cpool->is_pseudo_string_at(index)) {
607 string = cpool->pseudo_string_at(index, cache_index);
608 } else {
609 string = cpool->string_at(index, cache_index, THREAD);
610 if (HAS_PENDING_EXCEPTION) {
611 CLEAR_PENDING_EXCEPTION;
612 record_out_of_memory_failure();
613 return ciConstant();
614 }
615 }
616 ciObject* constant = get_object(string);
617 if (constant->is_array()) {
618 return ciConstant(T_ARRAY, constant);
619 } else {
620 assert (constant->is_instance(), "must be an instance, or not? ");
621 return ciConstant(T_OBJECT, constant);
622 }
623 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
624 // 4881222: allow ldc to take a class type
625 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
626 if (HAS_PENDING_EXCEPTION) {
627 CLEAR_PENDING_EXCEPTION;
628 record_out_of_memory_failure();
629 return ciConstant();
630 }
631 assert (klass->is_instance_klass() || klass->is_array_klass(),
632 "must be an instance or array klass ");
633 return ciConstant(T_OBJECT, klass->java_mirror());
634 } else if (tag.is_method_type()) {
635 // must execute Java code to link this CP entry into cache[i].f1
636 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
637 ciObject* ciobj = get_unloaded_method_type_constant(signature);
638 return ciConstant(T_OBJECT, ciobj);
639 } else if (tag.is_method_handle()) {
640 // must execute Java code to link this CP entry into cache[i].f1
641 int ref_kind = cpool->method_handle_ref_kind_at(index);
642 int callee_index = cpool->method_handle_klass_index_at(index);
643 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
644 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
645 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
646 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
647 return ciConstant(T_OBJECT, ciobj);
648 } else {
649 ShouldNotReachHere();
650 return ciConstant();
651 }
652 }
653
654 // ------------------------------------------------------------------
655 // ciEnv::get_constant_by_index
656 //
657 // Pull a constant out of the constant pool. How appropriate.
658 //
659 // Implementation note: this query is currently in no way cached.
660 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
661 int pool_index, int cache_index,
662 ciInstanceKlass* accessor) {
663 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
664 }
665
666 // ------------------------------------------------------------------
667 // ciEnv::get_field_by_index_impl
668 //
669 // Implementation of get_field_by_index.
670 //
671 // Implementation note: the results of field lookups are cached
672 // in the accessor klass.
673 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
674 int index) {
675 ciConstantPoolCache* cache = accessor->field_cache();
676 if (cache == NULL) {
677 ciField* field = new (arena()) ciField(accessor, index);
678 return field;
679 } else {
680 ciField* field = (ciField*)cache->get(index);
681 if (field == NULL) {
682 field = new (arena()) ciField(accessor, index);
683 cache->insert(index, field);
684 }
685 return field;
686 }
687 }
688
689 // ------------------------------------------------------------------
690 // ciEnv::get_field_by_index
691 //
692 // Get a field by index from a klass's constant pool.
693 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
694 int index) {
695 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
696 }
697
698 // ------------------------------------------------------------------
699 // ciEnv::lookup_method
700 //
701 // Perform an appropriate method lookup based on accessor, holder,
702 // name, signature, and bytecode.
703 Method* ciEnv::lookup_method(InstanceKlass* accessor,
704 InstanceKlass* holder,
705 Symbol* name,
706 Symbol* sig,
707 Bytecodes::Code bc,
708 constantTag tag) {
709 EXCEPTION_CONTEXT;
710 KlassHandle h_accessor(THREAD, accessor);
711 KlassHandle h_holder(THREAD, holder);
712 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL));
713 methodHandle dest_method;
714 LinkInfo link_info(h_holder, name, sig, h_accessor, LinkInfo::needs_access_check, tag);
715 switch (bc) {
716 case Bytecodes::_invokestatic:
717 dest_method =
718 LinkResolver::resolve_static_call_or_null(link_info);
719 break;
720 case Bytecodes::_invokespecial:
721 dest_method =
722 LinkResolver::resolve_special_call_or_null(link_info);
723 break;
724 case Bytecodes::_invokeinterface:
725 dest_method =
726 LinkResolver::linktime_resolve_interface_method_or_null(link_info);
727 break;
728 case Bytecodes::_invokevirtual:
729 dest_method =
730 LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
731 break;
732 default: ShouldNotReachHere();
733 }
734
735 return dest_method();
736 }
737
738
739 // ------------------------------------------------------------------
740 // ciEnv::get_method_by_index_impl
741 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
742 int index, Bytecodes::Code bc,
743 ciInstanceKlass* accessor) {
744 if (bc == Bytecodes::_invokedynamic) {
745 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
746 bool is_resolved = !cpce->is_f1_null();
747 // FIXME: code generation could allow for null (unlinked) call site
748 // The call site could be made patchable as follows:
749 // Load the appendix argument from the constant pool.
750 // Test the appendix argument and jump to a known deopt routine if it is null.
751 // Jump through a patchable call site, which is initially a deopt routine.
752 // Patch the call site to the nmethod entry point of the static compiled lambda form.
753 // As with other two-component call sites, both values must be independently verified.
754
755 if (is_resolved) {
756 // Get the invoker Method* from the constant pool.
757 // (The appendix argument, if any, will be noted in the method's signature.)
758 Method* adapter = cpce->f1_as_method();
759 return get_method(adapter);
760 }
761
762 // Fake a method that is equivalent to a declared method.
763 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
764 ciSymbol* name = ciSymbol::invokeBasic_name();
765 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
766 return get_unloaded_method(holder, name, signature, accessor);
767 } else {
768 const int holder_index = cpool->klass_ref_index_at(index);
769 bool holder_is_accessible;
770 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
771 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder);
772
773 // Get the method's name and signature.
774 Symbol* name_sym = cpool->name_ref_at(index);
775 Symbol* sig_sym = cpool->signature_ref_at(index);
776
777 if (cpool->has_preresolution()
778 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
779 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
780 // Short-circuit lookups for JSR 292-related call sites.
781 // That is, do not rely only on name-based lookups, because they may fail
782 // if the names are not resolvable in the boot class loader (7056328).
783 switch (bc) {
784 case Bytecodes::_invokevirtual:
785 case Bytecodes::_invokeinterface:
786 case Bytecodes::_invokespecial:
787 case Bytecodes::_invokestatic:
788 {
789 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
790 if (m != NULL) {
791 return get_method(m);
792 }
793 }
794 break;
795 }
796 }
797
798 if (holder_is_accessible) { // Our declared holder is loaded.
799 InstanceKlass* lookup = declared_holder->get_instanceKlass();
800 constantTag tag = cpool->tag_ref_at(index);
801 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
802 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc, tag);
803 if (m != NULL &&
804 (bc == Bytecodes::_invokestatic
805 ? m->method_holder()->is_not_initialized()
806 : !m->method_holder()->is_loaded())) {
807 m = NULL;
808 }
809 #ifdef ASSERT
810 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
811 m = NULL;
812 }
813 #endif
814 if (m != NULL) {
815 // We found the method.
816 return get_method(m);
817 }
818 }
819
820 // Either the declared holder was not loaded, or the method could
821 // not be found. Create a dummy ciMethod to represent the failed
822 // lookup.
823 ciSymbol* name = get_symbol(name_sym);
824 ciSymbol* signature = get_symbol(sig_sym);
825 return get_unloaded_method(declared_holder, name, signature, accessor);
826 }
827 }
828
829
830 // ------------------------------------------------------------------
831 // ciEnv::get_instance_klass_for_declared_method_holder
832 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
833 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
834 // instead of a ciInstanceKlass. For that case simply pretend that the
835 // declared holder is Object.clone since that's where the call will bottom out.
836 // A more correct fix would trickle out through many interfaces in CI,
837 // requiring ciInstanceKlass* to become ciKlass* and many more places would
838 // require checks to make sure the expected type was found. Given that this
839 // only occurs for clone() the more extensive fix seems like overkill so
840 // instead we simply smear the array type into Object.
841 guarantee(method_holder != NULL, "no method holder");
842 if (method_holder->is_instance_klass()) {
843 return method_holder->as_instance_klass();
844 } else if (method_holder->is_array_klass()) {
845 return current()->Object_klass();
846 } else {
847 ShouldNotReachHere();
848 }
849 return NULL;
850 }
851
852
853 // ------------------------------------------------------------------
854 // ciEnv::get_method_by_index
855 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
856 int index, Bytecodes::Code bc,
857 ciInstanceKlass* accessor) {
858 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
859 }
860
861
862 // ------------------------------------------------------------------
863 // ciEnv::name_buffer
864 char *ciEnv::name_buffer(int req_len) {
865 if (_name_buffer_len < req_len) {
866 if (_name_buffer == NULL) {
867 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
868 _name_buffer_len = req_len;
869 } else {
870 _name_buffer =
871 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
872 _name_buffer_len = req_len;
873 }
874 }
875 return _name_buffer;
876 }
877
878 // ------------------------------------------------------------------
879 // ciEnv::is_in_vm
880 bool ciEnv::is_in_vm() {
881 return JavaThread::current()->thread_state() == _thread_in_vm;
882 }
883
884 bool ciEnv::system_dictionary_modification_counter_changed() {
885 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
886 }
887
888 // ------------------------------------------------------------------
889 // ciEnv::validate_compile_task_dependencies
890 //
891 // Check for changes during compilation (e.g. class loads, evolution,
892 // breakpoints, call site invalidation).
893 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
894 if (failing()) return; // no need for further checks
895
896 // First, check non-klass dependencies as we might return early and
897 // not check klass dependencies if the system dictionary
898 // modification counter hasn't changed (see below).
899 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
900 if (deps.is_klass_type()) continue; // skip klass dependencies
901 Klass* witness = deps.check_dependency();
902 if (witness != NULL) {
903 record_failure("invalid non-klass dependency");
904 return;
905 }
906 }
907
908 // Klass dependencies must be checked when the system dictionary
909 // changes. If logging is enabled all violated dependences will be
910 // recorded in the log. In debug mode check dependencies even if
911 // the system dictionary hasn't changed to verify that no invalid
912 // dependencies were inserted. Any violated dependences in this
913 // case are dumped to the tty.
914 bool counter_changed = system_dictionary_modification_counter_changed();
915
916 bool verify_deps = trueInDebug;
917 if (!counter_changed && !verify_deps) return;
918
919 int klass_violations = 0;
920 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
921 if (!deps.is_klass_type()) continue; // skip non-klass dependencies
922 Klass* witness = deps.check_dependency();
923 if (witness != NULL) {
924 klass_violations++;
925 if (!counter_changed) {
926 // Dependence failed but counter didn't change. Log a message
927 // describing what failed and allow the assert at the end to
928 // trigger.
929 deps.print_dependency(witness);
930 } else if (xtty == NULL) {
931 // If we're not logging then a single violation is sufficient,
932 // otherwise we want to log all the dependences which were
933 // violated.
934 break;
935 }
936 }
937 }
938
939 if (klass_violations != 0) {
940 #ifdef ASSERT
941 if (!counter_changed && !PrintCompilation) {
942 // Print out the compile task that failed
943 _task->print_tty();
944 }
945 #endif
946 assert(counter_changed, "failed dependencies, but counter didn't change");
947 record_failure("concurrent class loading");
948 }
949 }
950
951 // ------------------------------------------------------------------
952 // ciEnv::register_method
953 void ciEnv::register_method(ciMethod* target,
954 int entry_bci,
955 CodeOffsets* offsets,
956 int orig_pc_offset,
957 CodeBuffer* code_buffer,
958 int frame_words,
959 OopMapSet* oop_map_set,
960 ExceptionHandlerTable* handler_table,
961 ImplicitExceptionTable* inc_table,
962 AbstractCompiler* compiler,
963 bool has_unsafe_access,
964 bool has_wide_vectors,
965 RTMState rtm_state) {
966 VM_ENTRY_MARK;
967 nmethod* nm = NULL;
968 {
969 // To prevent compile queue updates.
970 MutexLocker locker(MethodCompileQueue_lock, THREAD);
971
972 // Prevent SystemDictionary::add_to_hierarchy from running
973 // and invalidating our dependencies until we install this method.
974 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
975 MutexLocker ml(Compile_lock);
976 NoSafepointVerifier nsv;
977
978 // Change in Jvmti state may invalidate compilation.
979 if (!failing() && jvmti_state_changed()) {
980 record_failure("Jvmti state change invalidated dependencies");
981 }
982
983 // Change in DTrace flags may invalidate compilation.
984 if (!failing() &&
985 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
986 (!dtrace_method_probes() && DTraceMethodProbes) ||
987 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
988 record_failure("DTrace flags change invalidated dependencies");
989 }
990
991 if (!failing()) {
992 if (log() != NULL) {
993 // Log the dependencies which this compilation declares.
994 dependencies()->log_all_dependencies();
995 }
996
997 // Encode the dependencies now, so we can check them right away.
998 dependencies()->encode_content_bytes();
999
1000 // Check for {class loads, evolution, breakpoints, ...} during compilation
1001 validate_compile_task_dependencies(target);
1002 }
1003
1004 methodHandle method(THREAD, target->get_Method());
1005
1006 #if INCLUDE_RTM_OPT
1007 if (!failing() && (rtm_state != NoRTM) &&
1008 (method()->method_data() != NULL) &&
1009 (method()->method_data()->rtm_state() != rtm_state)) {
1010 // Preemptive decompile if rtm state was changed.
1011 record_failure("RTM state change invalidated rtm code");
1012 }
1013 #endif
1014
1015 if (failing()) {
1016 // While not a true deoptimization, it is a preemptive decompile.
1017 MethodData* mdo = method()->method_data();
1018 if (mdo != NULL) {
1019 mdo->inc_decompile_count();
1020 }
1021
1022 // All buffers in the CodeBuffer are allocated in the CodeCache.
1023 // If the code buffer is created on each compile attempt
1024 // as in C2, then it must be freed.
1025 code_buffer->free_blob();
1026 return;
1027 }
1028
1029 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1030 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1031
1032 nm = nmethod::new_nmethod(method,
1033 compile_id(),
1034 entry_bci,
1035 offsets,
1036 orig_pc_offset,
1037 debug_info(), dependencies(), code_buffer,
1038 frame_words, oop_map_set,
1039 handler_table, inc_table,
1040 compiler, task()->comp_level());
1041
1042 // Free codeBlobs
1043 code_buffer->free_blob();
1044
1045 if (nm != NULL) {
1046 nm->set_has_unsafe_access(has_unsafe_access);
1047 nm->set_has_wide_vectors(has_wide_vectors);
1048 #if INCLUDE_RTM_OPT
1049 nm->set_rtm_state(rtm_state);
1050 #endif
1051
1052 // Record successful registration.
1053 // (Put nm into the task handle *before* publishing to the Java heap.)
1054 if (task() != NULL) {
1055 task()->set_code(nm);
1056 }
1057
1058 if (entry_bci == InvocationEntryBci) {
1059 if (TieredCompilation) {
1060 // If there is an old version we're done with it
1061 CompiledMethod* old = method->code();
1062 if (TraceMethodReplacement && old != NULL) {
1063 ResourceMark rm;
1064 char *method_name = method->name_and_sig_as_C_string();
1065 tty->print_cr("Replacing method %s", method_name);
1066 }
1067 if (old != NULL) {
1068 old->make_not_used();
1069 }
1070 }
1071 if (TraceNMethodInstalls) {
1072 ResourceMark rm;
1073 char *method_name = method->name_and_sig_as_C_string();
1074 ttyLocker ttyl;
1075 tty->print_cr("Installing method (%d) %s ",
1076 task()->comp_level(),
1077 method_name);
1078 }
1079 // Allow the code to be executed
1080 method->set_code(method, nm);
1081 } else {
1082 if (TraceNMethodInstalls) {
1083 ResourceMark rm;
1084 char *method_name = method->name_and_sig_as_C_string();
1085 ttyLocker ttyl;
1086 tty->print_cr("Installing osr method (%d) %s @ %d",
1087 task()->comp_level(),
1088 method_name,
1089 entry_bci);
1090 }
1091 method->method_holder()->add_osr_nmethod(nm);
1092 }
1093 }
1094 } // safepoints are allowed again
1095
1096 if (nm != NULL) {
1097 // JVMTI -- compiled method notification (must be done outside lock)
1098 nm->post_compiled_method_load_event();
1099 } else {
1100 // The CodeCache is full.
1101 record_failure("code cache is full");
1102 }
1103 }
1104
1105
1106 // ------------------------------------------------------------------
1107 // ciEnv::find_system_klass
1108 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1109 VM_ENTRY_MARK;
1110 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1111 }
1112
1113 // ------------------------------------------------------------------
1114 // ciEnv::comp_level
1115 int ciEnv::comp_level() {
1116 if (task() == NULL) return CompLevel_highest_tier;
1117 return task()->comp_level();
1118 }
1119
1120 // ------------------------------------------------------------------
1121 // ciEnv::compile_id
1122 uint ciEnv::compile_id() {
1123 if (task() == NULL) return 0;
1124 return task()->compile_id();
1125 }
1126
1127 // ------------------------------------------------------------------
1128 // ciEnv::notice_inlined_method()
1129 void ciEnv::notice_inlined_method(ciMethod* method) {
1130 _num_inlined_bytecodes += method->code_size_for_inlining();
1131 }
1132
1133 // ------------------------------------------------------------------
1134 // ciEnv::num_inlined_bytecodes()
1135 int ciEnv::num_inlined_bytecodes() const {
1136 return _num_inlined_bytecodes;
1137 }
1138
1139 // ------------------------------------------------------------------
1140 // ciEnv::record_failure()
1141 void ciEnv::record_failure(const char* reason) {
1142 if (_failure_reason == NULL) {
1143 // Record the first failure reason.
1144 _failure_reason = reason;
1145 }
1146 }
1147
1148 void ciEnv::report_failure(const char* reason) {
1149 // Create and fire JFR event
1150 EventCompilerFailure event;
1151 if (event.should_commit()) {
1152 event.set_compileID(compile_id());
1153 event.set_failure(reason);
1154 event.commit();
1155 }
1156 }
1157
1158 // ------------------------------------------------------------------
1159 // ciEnv::record_method_not_compilable()
1160 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1161 int new_compilable =
1162 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1163
1164 // Only note transitions to a worse state
1165 if (new_compilable > _compilable) {
1166 if (log() != NULL) {
1167 if (all_tiers) {
1168 log()->elem("method_not_compilable");
1169 } else {
1170 log()->elem("method_not_compilable_at_tier level='%d'",
1171 current()->task()->comp_level());
1172 }
1173 }
1174 _compilable = new_compilable;
1175
1176 // Reset failure reason; this one is more important.
1177 _failure_reason = NULL;
1178 record_failure(reason);
1179 }
1180 }
1181
1182 // ------------------------------------------------------------------
1183 // ciEnv::record_out_of_memory_failure()
1184 void ciEnv::record_out_of_memory_failure() {
1185 // If memory is low, we stop compiling methods.
1186 record_method_not_compilable("out of memory");
1187 }
1188
1189 ciInstance* ciEnv::unloaded_ciinstance() {
1190 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1191 }
1192
1193 // ------------------------------------------------------------------
1194 // ciEnv::dump_replay_data*
1195
1196 // Don't change thread state and acquire any locks.
1197 // Safe to call from VM error reporter.
1198
1199 void ciEnv::dump_compile_data(outputStream* out) {
1200 CompileTask* task = this->task();
1201 Method* method = task->method();
1202 int entry_bci = task->osr_bci();
1203 int comp_level = task->comp_level();
1204 out->print("compile %s %s %s %d %d",
1205 method->klass_name()->as_quoted_ascii(),
1206 method->name()->as_quoted_ascii(),
1207 method->signature()->as_quoted_ascii(),
1208 entry_bci, comp_level);
1209 if (compiler_data() != NULL) {
1210 if (is_c2_compile(comp_level)) { // C2 or Shark
1211 #ifdef COMPILER2
1212 // Dump C2 inlining data.
1213 ((Compile*)compiler_data())->dump_inline_data(out);
1214 #endif
1215 } else if (is_c1_compile(comp_level)) { // C1
1216 #ifdef COMPILER1
1217 // Dump C1 inlining data.
1218 ((Compilation*)compiler_data())->dump_inline_data(out);
1219 #endif
1220 }
1221 }
1222 out->cr();
1223 }
1224
1225 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1226 ResourceMark rm;
1227 #if INCLUDE_JVMTI
1228 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1229 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1230 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1231 #endif // INCLUDE_JVMTI
1232
1233 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1234 out->print_cr("# %d ciObject found", objects->length());
1235 for (int i = 0; i < objects->length(); i++) {
1236 objects->at(i)->dump_replay_data(out);
1237 }
1238 dump_compile_data(out);
1239 out->flush();
1240 }
1241
1242 void ciEnv::dump_replay_data(outputStream* out) {
1243 GUARDED_VM_ENTRY(
1244 MutexLocker ml(Compile_lock);
1245 dump_replay_data_unsafe(out);
1246 )
1247 }
1248
1249 void ciEnv::dump_replay_data(int compile_id) {
1250 static char buffer[O_BUFLEN];
1251 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1252 if (ret > 0) {
1253 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1254 if (fd != -1) {
1255 FILE* replay_data_file = os::open(fd, "w");
1256 if (replay_data_file != NULL) {
1257 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1258 dump_replay_data(&replay_data_stream);
1259 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1260 } else {
1261 tty->print_cr("# Can't open file to dump replay data.");
1262 }
1263 }
1264 }
1265 }
1266
1267 void ciEnv::dump_inline_data(int compile_id) {
1268 static char buffer[O_BUFLEN];
1269 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1270 if (ret > 0) {
1271 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1272 if (fd != -1) {
1273 FILE* inline_data_file = os::open(fd, "w");
1274 if (inline_data_file != NULL) {
1275 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1276 GUARDED_VM_ENTRY(
1277 MutexLocker ml(Compile_lock);
1278 dump_compile_data(&replay_data_stream);
1279 )
1280 replay_data_stream.flush();
1281 tty->print("# Compiler inline data is saved as: ");
1282 tty->print_cr("%s", buffer);
1283 } else {
1284 tty->print_cr("# Can't open file to dump inline data.");
1285 }
1286 }
1287 }
1288 }