1 /*
2 * Copyright (c) 1999, 2014, 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/scopeDesc.hpp"
38 #include "compiler/compileBroker.hpp"
39 #include "compiler/compileLog.hpp"
40 #include "compiler/compilerOracle.hpp"
41 #include "gc_interface/collectedHeap.inline.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "memory/allocation.inline.hpp"
44 #include "memory/oopFactory.hpp"
45 #include "memory/universe.inline.hpp"
46 #include "oops/methodData.hpp"
47 #include "oops/objArrayKlass.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/oop.inline2.hpp"
50 #include "prims/jvmtiExport.hpp"
51 #include "runtime/init.hpp"
52 #include "runtime/reflection.hpp"
53 #include "runtime/sharedRuntime.hpp"
54 #include "runtime/thread.inline.hpp"
55 #include "utilities/dtrace.hpp"
56 #include "utilities/macros.hpp"
57 #ifdef COMPILER1
58 #include "c1/c1_Runtime1.hpp"
59 #endif
60 #ifdef COMPILER2
61 #include "opto/runtime.hpp"
62 #endif
63
64 // ciEnv
65 //
66 // This class is the top level broker for requests from the compiler
67 // to the VM.
68
69 ciObject* ciEnv::_null_object_instance;
70
71 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
72 WK_KLASSES_DO(WK_KLASS_DEFN)
73 #undef WK_KLASS_DEFN
74
75 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
76 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
77 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
78
79 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
80 jobject ciEnv::_ArrayStoreException_handle = NULL;
81 jobject ciEnv::_ClassCastException_handle = NULL;
82
83 #ifndef PRODUCT
84 static bool firstEnv = true;
85 #endif /* PRODUCT */
86
87 // ------------------------------------------------------------------
88 // ciEnv::ciEnv
89 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) {
90 VM_ENTRY_MARK;
91
92 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
93 thread->set_env(this);
94 assert(ciEnv::current() == this, "sanity");
95
96 _oop_recorder = NULL;
97 _debug_info = NULL;
98 _dependencies = NULL;
99 _failure_reason = NULL;
100 _compilable = MethodCompilable;
101 _break_at_compile = false;
102 _compiler_data = NULL;
103 #ifndef PRODUCT
104 assert(!firstEnv, "not initialized properly");
105 #endif /* !PRODUCT */
106
107 _system_dictionary_modification_counter = system_dictionary_modification_counter;
108 _num_inlined_bytecodes = 0;
109 assert(task == NULL || thread->task() == task, "sanity");
110 _task = task;
111 _log = NULL;
112
113 // Temporary buffer for creating symbols and such.
114 _name_buffer = NULL;
115 _name_buffer_len = 0;
116
117 _arena = &_ciEnv_arena;
118 _factory = new (_arena) ciObjectFactory(_arena, 128);
119
120 // Preload commonly referenced system ciObjects.
121
122 // During VM initialization, these instances have not yet been created.
123 // Assertions ensure that these instances are not accessed before
124 // their initialization.
125
126 assert(Universe::is_fully_initialized(), "should be complete");
127
128 oop o = Universe::null_ptr_exception_instance();
129 assert(o != NULL, "should have been initialized");
130 _NullPointerException_instance = get_object(o)->as_instance();
131 o = Universe::arithmetic_exception_instance();
132 assert(o != NULL, "should have been initialized");
133 _ArithmeticException_instance = get_object(o)->as_instance();
134
135 _ArrayIndexOutOfBoundsException_instance = NULL;
136 _ArrayStoreException_instance = NULL;
137 _ClassCastException_instance = NULL;
138 _the_null_string = NULL;
139 _the_min_jint_string = NULL;
140
141 _jvmti_can_hotswap_or_post_breakpoint = false;
142 _jvmti_can_access_local_variables = false;
143 _jvmti_can_post_on_exceptions = false;
144 _jvmti_can_pop_frame = false;
145 }
146
147 ciEnv::ciEnv(Arena* arena) {
148 ASSERT_IN_VM;
149
150 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
151 CompilerThread* current_thread = CompilerThread::current();
152 assert(current_thread->env() == NULL, "must be");
153 current_thread->set_env(this);
154 assert(ciEnv::current() == this, "sanity");
155
156 _oop_recorder = NULL;
157 _debug_info = NULL;
158 _dependencies = NULL;
159 _failure_reason = NULL;
160 _compilable = MethodCompilable_never;
161 _break_at_compile = false;
162 _compiler_data = NULL;
163 #ifndef PRODUCT
164 assert(firstEnv, "must be first");
165 firstEnv = false;
166 #endif /* !PRODUCT */
167
168 _system_dictionary_modification_counter = 0;
169 _num_inlined_bytecodes = 0;
170 _task = NULL;
171 _log = NULL;
172
173 // Temporary buffer for creating symbols and such.
174 _name_buffer = NULL;
175 _name_buffer_len = 0;
176
177 _arena = arena;
178 _factory = new (_arena) ciObjectFactory(_arena, 128);
179
180 // Preload commonly referenced system ciObjects.
181
182 // During VM initialization, these instances have not yet been created.
183 // Assertions ensure that these instances are not accessed before
184 // their initialization.
185
186 assert(Universe::is_fully_initialized(), "must be");
187
188 _NullPointerException_instance = NULL;
189 _ArithmeticException_instance = NULL;
190 _ArrayIndexOutOfBoundsException_instance = NULL;
191 _ArrayStoreException_instance = NULL;
192 _ClassCastException_instance = NULL;
193 _the_null_string = NULL;
194 _the_min_jint_string = NULL;
195
196 _jvmti_can_hotswap_or_post_breakpoint = false;
197 _jvmti_can_access_local_variables = false;
198 _jvmti_can_post_on_exceptions = false;
199 _jvmti_can_pop_frame = false;
200 }
201
202 ciEnv::~ciEnv() {
203 CompilerThread* current_thread = CompilerThread::current();
204 _factory->remove_symbols();
205 // Need safepoint to clear the env on the thread. RedefineClasses might
206 // be reading it.
207 GUARDED_VM_ENTRY(current_thread->set_env(NULL);)
208 }
209
210 // ------------------------------------------------------------------
211 // Cache Jvmti state
212 void ciEnv::cache_jvmti_state() {
213 VM_ENTRY_MARK;
214 // Get Jvmti capabilities under lock to get consistant values.
215 MutexLocker mu(JvmtiThreadState_lock);
216 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
217 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
218 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
219 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
220 }
221
222 bool ciEnv::should_retain_local_variables() const {
223 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame;
224 }
225
226 bool ciEnv::jvmti_state_changed() const {
227 if (!_jvmti_can_access_local_variables &&
228 JvmtiExport::can_access_local_variables()) {
229 return true;
230 }
231 if (!_jvmti_can_hotswap_or_post_breakpoint &&
232 JvmtiExport::can_hotswap_or_post_breakpoint()) {
233 return true;
234 }
235 if (!_jvmti_can_post_on_exceptions &&
236 JvmtiExport::can_post_on_exceptions()) {
237 return true;
238 }
239 if (!_jvmti_can_pop_frame &&
240 JvmtiExport::can_pop_frame()) {
241 return true;
242 }
243 return false;
244 }
245
246 // ------------------------------------------------------------------
247 // Cache DTrace flags
248 void ciEnv::cache_dtrace_flags() {
249 // Need lock?
250 _dtrace_extended_probes = ExtendedDTraceProbes;
251 if (_dtrace_extended_probes) {
252 _dtrace_monitor_probes = true;
253 _dtrace_method_probes = true;
254 _dtrace_alloc_probes = true;
255 } else {
256 _dtrace_monitor_probes = DTraceMonitorProbes;
257 _dtrace_method_probes = DTraceMethodProbes;
258 _dtrace_alloc_probes = DTraceAllocProbes;
259 }
260 }
261
262 // ------------------------------------------------------------------
263 // helper for lazy exception creation
264 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
265 VM_ENTRY_MARK;
266 if (handle == NULL) {
267 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
268 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
269 jobject objh = NULL;
270 if (!HAS_PENDING_EXCEPTION && k != NULL) {
271 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
272 if (!HAS_PENDING_EXCEPTION)
273 objh = JNIHandles::make_global(obj);
274 }
275 if (HAS_PENDING_EXCEPTION) {
276 CLEAR_PENDING_EXCEPTION;
277 } else {
278 handle = objh;
279 }
280 }
281 oop obj = JNIHandles::resolve(handle);
282 return obj == NULL? NULL: get_object(obj)->as_instance();
283 }
284
285 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
286 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
287 _ArrayIndexOutOfBoundsException_instance
288 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
289 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
290 }
291 return _ArrayIndexOutOfBoundsException_instance;
292 }
293 ciInstance* ciEnv::ArrayStoreException_instance() {
294 if (_ArrayStoreException_instance == NULL) {
295 _ArrayStoreException_instance
296 = get_or_create_exception(_ArrayStoreException_handle,
297 vmSymbols::java_lang_ArrayStoreException());
298 }
299 return _ArrayStoreException_instance;
300 }
301 ciInstance* ciEnv::ClassCastException_instance() {
302 if (_ClassCastException_instance == NULL) {
303 _ClassCastException_instance
304 = get_or_create_exception(_ClassCastException_handle,
305 vmSymbols::java_lang_ClassCastException());
306 }
307 return _ClassCastException_instance;
308 }
309
310 ciInstance* ciEnv::the_null_string() {
311 if (_the_null_string == NULL) {
312 VM_ENTRY_MARK;
313 _the_null_string = get_object(Universe::the_null_string())->as_instance();
314 }
315 return _the_null_string;
316 }
317
318 ciInstance* ciEnv::the_min_jint_string() {
319 if (_the_min_jint_string == NULL) {
320 VM_ENTRY_MARK;
321 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
322 }
323 return _the_min_jint_string;
324 }
325
326 // ------------------------------------------------------------------
327 // ciEnv::get_method_from_handle
328 ciMethod* ciEnv::get_method_from_handle(Method* method) {
329 VM_ENTRY_MARK;
330 return get_metadata(method)->as_method();
331 }
332
333 // ------------------------------------------------------------------
334 // ciEnv::array_element_offset_in_bytes
335 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
336 VM_ENTRY_MARK;
337 objArrayOop a = (objArrayOop)a_h->get_oop();
338 assert(a->is_objArray(), "");
339 int length = a->length();
340 oop o = o_h->get_oop();
341 for (int i = 0; i < length; i++) {
342 if (a->obj_at(i) == o) return i;
343 }
344 return -1;
345 }
346
347
348 // ------------------------------------------------------------------
349 // ciEnv::check_klass_accessiblity
350 //
351 // Note: the logic of this method should mirror the logic of
352 // ConstantPool::verify_constant_pool_resolve.
353 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
354 Klass* resolved_klass) {
355 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
356 return true;
357 }
358 if (accessing_klass->is_obj_array_klass()) {
359 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
360 }
361 if (!accessing_klass->is_instance_klass()) {
362 return true;
363 }
364
365 if (resolved_klass->oop_is_objArray()) {
366 // Find the element klass, if this is an array.
367 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
368 }
369 if (resolved_klass->oop_is_instance()) {
370 return Reflection::verify_class_access(accessing_klass->get_Klass(),
371 resolved_klass,
372 true);
373 }
374 return true;
375 }
376
377 // ------------------------------------------------------------------
378 // ciEnv::get_klass_by_name_impl
379 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
380 constantPoolHandle cpool,
381 ciSymbol* name,
382 bool require_local) {
383 ASSERT_IN_VM;
384 EXCEPTION_CONTEXT;
385
386 // Now we need to check the SystemDictionary
387 Symbol* sym = name->get_symbol();
388 if (sym->byte_at(0) == 'L' &&
389 sym->byte_at(sym->utf8_length()-1) == ';') {
390 // This is a name from a signature. Strip off the trimmings.
391 // Call recursive to keep scope of strippedsym.
392 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
393 sym->utf8_length()-2,
394 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
395 ciSymbol* strippedname = get_symbol(strippedsym);
396 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
397 }
398
399 // Check for prior unloaded klass. The SystemDictionary's answers
400 // can vary over time but the compiler needs consistency.
401 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
402 if (unloaded_klass != NULL) {
403 if (require_local) return NULL;
404 return unloaded_klass;
405 }
406
407 Handle loader(THREAD, (oop)NULL);
408 Handle domain(THREAD, (oop)NULL);
409 if (accessing_klass != NULL) {
410 loader = Handle(THREAD, accessing_klass->loader());
411 domain = Handle(THREAD, accessing_klass->protection_domain());
412 }
413
414 // setup up the proper type to return on OOM
415 ciKlass* fail_type;
416 if (sym->byte_at(0) == '[') {
417 fail_type = _unloaded_ciobjarrayklass;
418 } else {
419 fail_type = _unloaded_ciinstance_klass;
420 }
421 KlassHandle found_klass;
422 {
423 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
424 MutexLocker ml(Compile_lock);
425 Klass* kls;
426 if (!require_local) {
427 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
428 KILL_COMPILE_ON_FATAL_(fail_type));
429 } else {
430 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
431 KILL_COMPILE_ON_FATAL_(fail_type));
432 }
433 found_klass = KlassHandle(THREAD, kls);
434 }
435
436 // If we fail to find an array klass, look again for its element type.
437 // The element type may be available either locally or via constraints.
438 // In either case, if we can find the element type in the system dictionary,
439 // we must build an array type around it. The CI requires array klasses
440 // to be loaded if their element klasses are loaded, except when memory
441 // is exhausted.
442 if (sym->byte_at(0) == '[' &&
443 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
444 // We have an unloaded array.
445 // Build it on the fly if the element class exists.
446 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
447 sym->utf8_length()-1,
448 KILL_COMPILE_ON_FATAL_(fail_type));
449
450 // Get element ciKlass recursively.
451 ciKlass* elem_klass =
452 get_klass_by_name_impl(accessing_klass,
453 cpool,
454 get_symbol(elem_sym),
455 require_local);
456 if (elem_klass != NULL && elem_klass->is_loaded()) {
457 // Now make an array for it
458 return ciObjArrayKlass::make_impl(elem_klass);
459 }
460 }
461
462 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
463 // Look inside the constant pool for pre-resolved class entries.
464 for (int i = cpool->length() - 1; i >= 1; i--) {
465 if (cpool->tag_at(i).is_klass()) {
466 Klass* kls = cpool->resolved_klass_at(i);
467 if (kls->name() == sym) {
468 found_klass = KlassHandle(THREAD, kls);
469 break;
470 }
471 }
472 }
473 }
474
475 if (found_klass() != NULL) {
476 // Found it. Build a CI handle.
477 return get_klass(found_klass());
478 }
479
480 if (require_local) return NULL;
481
482 // Not yet loaded into the VM, or not governed by loader constraints.
483 // Make a CI representative for it.
484 return get_unloaded_klass(accessing_klass, name);
485 }
486
487 // ------------------------------------------------------------------
488 // ciEnv::get_klass_by_name
489 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
490 ciSymbol* klass_name,
491 bool require_local) {
492 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
493 constantPoolHandle(),
494 klass_name,
495 require_local);)
496 }
497
498 // ------------------------------------------------------------------
499 // ciEnv::get_klass_by_index_impl
500 //
501 // Implementation of get_klass_by_index.
502 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool,
503 int index,
504 bool& is_accessible,
505 ciInstanceKlass* accessor) {
506 EXCEPTION_CONTEXT;
507 KlassHandle klass; // = NULL;
508 Symbol* klass_name = NULL;
509
510 if (cpool->tag_at(index).is_symbol()) {
511 klass_name = cpool->symbol_at(index);
512 } else {
513 // Check if it's resolved if it's not a symbol constant pool entry.
514 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index));
515 // Try to look it up by name.
516 if (klass.is_null()) {
517 klass_name = cpool->klass_name_at(index);
518 }
519 }
520
521 if (klass.is_null()) {
522 // Not found in constant pool. Use the name to do the lookup.
523 ciKlass* k = get_klass_by_name_impl(accessor,
524 cpool,
525 get_symbol(klass_name),
526 false);
527 // Calculate accessibility the hard way.
528 if (!k->is_loaded()) {
529 is_accessible = false;
530 } else if (k->loader() != accessor->loader() &&
531 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
532 // Loaded only remotely. Not linked yet.
533 is_accessible = false;
534 } else {
535 // Linked locally, and we must also check public/private, etc.
536 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
537 }
538 return k;
539 }
540
541 // Check for prior unloaded klass. The SystemDictionary's answers
542 // can vary over time but the compiler needs consistency.
543 ciSymbol* name = get_symbol(klass()->name());
544 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
545 if (unloaded_klass != NULL) {
546 is_accessible = false;
547 return unloaded_klass;
548 }
549
550 // It is known to be accessible, since it was found in the constant pool.
551 is_accessible = true;
552 return get_klass(klass());
553 }
554
555 // ------------------------------------------------------------------
556 // ciEnv::get_klass_by_index
557 //
558 // Get a klass from the constant pool.
559 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool,
560 int index,
561 bool& is_accessible,
562 ciInstanceKlass* accessor) {
563 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
564 }
565
566 // ------------------------------------------------------------------
567 // ciEnv::get_constant_by_index_impl
568 //
569 // Implementation of get_constant_by_index().
570 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool,
571 int pool_index, int cache_index,
572 ciInstanceKlass* accessor) {
573 bool ignore_will_link;
574 EXCEPTION_CONTEXT;
575 int index = pool_index;
576 if (cache_index >= 0) {
577 assert(index < 0, "only one kind of index at a time");
578 oop obj = cpool->resolved_references()->obj_at(cache_index);
579 if (obj != NULL) {
580 ciObject* ciobj = get_object(obj);
581 return ciConstant(T_OBJECT, ciobj);
582 }
583 index = cpool->object_to_cp_index(cache_index);
584 }
585 constantTag tag = cpool->tag_at(index);
586 if (tag.is_int()) {
587 return ciConstant(T_INT, (jint)cpool->int_at(index));
588 } else if (tag.is_long()) {
589 return ciConstant((jlong)cpool->long_at(index));
590 } else if (tag.is_float()) {
591 return ciConstant((jfloat)cpool->float_at(index));
592 } else if (tag.is_double()) {
593 return ciConstant((jdouble)cpool->double_at(index));
594 } else if (tag.is_string()) {
595 oop string = NULL;
596 assert(cache_index >= 0, "should have a cache index");
597 if (cpool->is_pseudo_string_at(index)) {
598 string = cpool->pseudo_string_at(index, cache_index);
599 } else {
600 string = cpool->string_at(index, cache_index, THREAD);
601 if (HAS_PENDING_EXCEPTION) {
602 CLEAR_PENDING_EXCEPTION;
603 record_out_of_memory_failure();
604 return ciConstant();
605 }
606 }
607 ciObject* constant = get_object(string);
608 assert (constant->is_instance(), "must be an instance, or not? ");
609 return ciConstant(T_OBJECT, constant);
610 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
611 // 4881222: allow ldc to take a class type
612 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
613 if (HAS_PENDING_EXCEPTION) {
614 CLEAR_PENDING_EXCEPTION;
615 record_out_of_memory_failure();
616 return ciConstant();
617 }
618 assert (klass->is_instance_klass() || klass->is_array_klass(),
619 "must be an instance or array klass ");
620 return ciConstant(T_OBJECT, klass->java_mirror());
621 } else if (tag.is_method_type()) {
622 // must execute Java code to link this CP entry into cache[i].f1
623 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
624 ciObject* ciobj = get_unloaded_method_type_constant(signature);
625 return ciConstant(T_OBJECT, ciobj);
626 } else if (tag.is_method_handle()) {
627 // must execute Java code to link this CP entry into cache[i].f1
628 int ref_kind = cpool->method_handle_ref_kind_at(index);
629 int callee_index = cpool->method_handle_klass_index_at(index);
630 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
631 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
632 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
633 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
634 return ciConstant(T_OBJECT, ciobj);
635 } else {
636 ShouldNotReachHere();
637 return ciConstant();
638 }
639 }
640
641 // ------------------------------------------------------------------
642 // ciEnv::get_constant_by_index
643 //
644 // Pull a constant out of the constant pool. How appropriate.
645 //
646 // Implementation note: this query is currently in no way cached.
647 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool,
648 int pool_index, int cache_index,
649 ciInstanceKlass* accessor) {
650 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
651 }
652
653 // ------------------------------------------------------------------
654 // ciEnv::get_field_by_index_impl
655 //
656 // Implementation of get_field_by_index.
657 //
658 // Implementation note: the results of field lookups are cached
659 // in the accessor klass.
660 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
661 int index) {
662 ciConstantPoolCache* cache = accessor->field_cache();
663 if (cache == NULL) {
664 ciField* field = new (arena()) ciField(accessor, index);
665 return field;
666 } else {
667 ciField* field = (ciField*)cache->get(index);
668 if (field == NULL) {
669 field = new (arena()) ciField(accessor, index);
670 cache->insert(index, field);
671 }
672 return field;
673 }
674 }
675
676 // ------------------------------------------------------------------
677 // ciEnv::get_field_by_index
678 //
679 // Get a field by index from a klass's constant pool.
680 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
681 int index) {
682 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
683 }
684
685 // ------------------------------------------------------------------
686 // ciEnv::lookup_method
687 //
688 // Perform an appropriate method lookup based on accessor, holder,
689 // name, signature, and bytecode.
690 Method* ciEnv::lookup_method(InstanceKlass* accessor,
691 InstanceKlass* holder,
692 Symbol* name,
693 Symbol* sig,
694 Bytecodes::Code bc) {
695 EXCEPTION_CONTEXT;
696 KlassHandle h_accessor(THREAD, accessor);
697 KlassHandle h_holder(THREAD, holder);
698 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL));
699 methodHandle dest_method;
700 switch (bc) {
701 case Bytecodes::_invokestatic:
702 dest_method =
703 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor);
704 break;
705 case Bytecodes::_invokespecial:
706 dest_method =
707 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor);
708 break;
709 case Bytecodes::_invokeinterface:
710 dest_method =
711 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig,
712 h_accessor, true);
713 break;
714 case Bytecodes::_invokevirtual:
715 dest_method =
716 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig,
717 h_accessor, true);
718 break;
719 default: ShouldNotReachHere();
720 }
721
722 return dest_method();
723 }
724
725
726 // ------------------------------------------------------------------
727 // ciEnv::get_method_by_index_impl
728 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool,
729 int index, Bytecodes::Code bc,
730 ciInstanceKlass* accessor) {
731 if (bc == Bytecodes::_invokedynamic) {
732 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
733 bool is_resolved = !cpce->is_f1_null();
734 // FIXME: code generation could allow for null (unlinked) call site
735 // The call site could be made patchable as follows:
736 // Load the appendix argument from the constant pool.
737 // Test the appendix argument and jump to a known deopt routine if it is null.
738 // Jump through a patchable call site, which is initially a deopt routine.
739 // Patch the call site to the nmethod entry point of the static compiled lambda form.
740 // As with other two-component call sites, both values must be independently verified.
741
742 if (is_resolved) {
743 // Get the invoker Method* from the constant pool.
744 // (The appendix argument, if any, will be noted in the method's signature.)
745 Method* adapter = cpce->f1_as_method();
746 return get_method(adapter);
747 }
748
749 // Fake a method that is equivalent to a declared method.
750 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
751 ciSymbol* name = ciSymbol::invokeBasic_name();
752 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
753 return get_unloaded_method(holder, name, signature, accessor);
754 } else {
755 const int holder_index = cpool->klass_ref_index_at(index);
756 bool holder_is_accessible;
757 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
758 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder);
759
760 // Get the method's name and signature.
761 Symbol* name_sym = cpool->name_ref_at(index);
762 Symbol* sig_sym = cpool->signature_ref_at(index);
763
764 if (cpool->has_preresolution()
765 || (holder == ciEnv::MethodHandle_klass() &&
766 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
767 // Short-circuit lookups for JSR 292-related call sites.
768 // That is, do not rely only on name-based lookups, because they may fail
769 // if the names are not resolvable in the boot class loader (7056328).
770 switch (bc) {
771 case Bytecodes::_invokevirtual:
772 case Bytecodes::_invokeinterface:
773 case Bytecodes::_invokespecial:
774 case Bytecodes::_invokestatic:
775 {
776 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
777 if (m != NULL) {
778 return get_method(m);
779 }
780 }
781 break;
782 }
783 }
784
785 if (holder_is_accessible) { // Our declared holder is loaded.
786 InstanceKlass* lookup = declared_holder->get_instanceKlass();
787 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
788 if (m != NULL &&
789 (bc == Bytecodes::_invokestatic
790 ? m->method_holder()->is_not_initialized()
791 : !m->method_holder()->is_loaded())) {
792 m = NULL;
793 }
794 #ifdef ASSERT
795 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
796 m = NULL;
797 }
798 #endif
799 if (m != NULL) {
800 // We found the method.
801 return get_method(m);
802 }
803 }
804
805 // Either the declared holder was not loaded, or the method could
806 // not be found. Create a dummy ciMethod to represent the failed
807 // lookup.
808 ciSymbol* name = get_symbol(name_sym);
809 ciSymbol* signature = get_symbol(sig_sym);
810 return get_unloaded_method(declared_holder, name, signature, accessor);
811 }
812 }
813
814
815 // ------------------------------------------------------------------
816 // ciEnv::get_instance_klass_for_declared_method_holder
817 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
818 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
819 // instead of a ciInstanceKlass. For that case simply pretend that the
820 // declared holder is Object.clone since that's where the call will bottom out.
821 // A more correct fix would trickle out through many interfaces in CI,
822 // requiring ciInstanceKlass* to become ciKlass* and many more places would
823 // require checks to make sure the expected type was found. Given that this
824 // only occurs for clone() the more extensive fix seems like overkill so
825 // instead we simply smear the array type into Object.
826 guarantee(method_holder != NULL, "no method holder");
827 if (method_holder->is_instance_klass()) {
828 return method_holder->as_instance_klass();
829 } else if (method_holder->is_array_klass()) {
830 return current()->Object_klass();
831 } else {
832 ShouldNotReachHere();
833 }
834 return NULL;
835 }
836
837
838 // ------------------------------------------------------------------
839 // ciEnv::get_method_by_index
840 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool,
841 int index, Bytecodes::Code bc,
842 ciInstanceKlass* accessor) {
843 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
844 }
845
846
847 // ------------------------------------------------------------------
848 // ciEnv::name_buffer
849 char *ciEnv::name_buffer(int req_len) {
850 if (_name_buffer_len < req_len) {
851 if (_name_buffer == NULL) {
852 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
853 _name_buffer_len = req_len;
854 } else {
855 _name_buffer =
856 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
857 _name_buffer_len = req_len;
858 }
859 }
860 return _name_buffer;
861 }
862
863 // ------------------------------------------------------------------
864 // ciEnv::is_in_vm
865 bool ciEnv::is_in_vm() {
866 return JavaThread::current()->thread_state() == _thread_in_vm;
867 }
868
869 bool ciEnv::system_dictionary_modification_counter_changed() {
870 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
871 }
872
873 // ------------------------------------------------------------------
874 // ciEnv::validate_compile_task_dependencies
875 //
876 // Check for changes during compilation (e.g. class loads, evolution,
877 // breakpoints, call site invalidation).
878 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
879 if (failing()) return; // no need for further checks
880
881 // First, check non-klass dependencies as we might return early and
882 // not check klass dependencies if the system dictionary
883 // modification counter hasn't changed (see below).
884 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
885 if (deps.is_klass_type()) continue; // skip klass dependencies
886 Klass* witness = deps.check_dependency();
887 if (witness != NULL) {
888 record_failure("invalid non-klass dependency");
889 return;
890 }
891 }
892
893 // Klass dependencies must be checked when the system dictionary
894 // changes. If logging is enabled all violated dependences will be
895 // recorded in the log. In debug mode check dependencies even if
896 // the system dictionary hasn't changed to verify that no invalid
897 // dependencies were inserted. Any violated dependences in this
898 // case are dumped to the tty.
899 bool counter_changed = system_dictionary_modification_counter_changed();
900
901 bool verify_deps = trueInDebug;
902 if (!counter_changed && !verify_deps) return;
903
904 int klass_violations = 0;
905 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
906 if (!deps.is_klass_type()) continue; // skip non-klass dependencies
907 Klass* witness = deps.check_dependency();
908 if (witness != NULL) {
909 klass_violations++;
910 if (!counter_changed) {
911 // Dependence failed but counter didn't change. Log a message
912 // describing what failed and allow the assert at the end to
913 // trigger.
914 deps.print_dependency(witness);
915 } else if (xtty == NULL) {
916 // If we're not logging then a single violation is sufficient,
917 // otherwise we want to log all the dependences which were
918 // violated.
919 break;
920 }
921 }
922 }
923
924 if (klass_violations != 0) {
925 #ifdef ASSERT
926 if (!counter_changed && !PrintCompilation) {
927 // Print out the compile task that failed
928 _task->print_tty();
929 }
930 #endif
931 assert(counter_changed, "failed dependencies, but counter didn't change");
932 record_failure("concurrent class loading");
933 }
934 }
935
936 // ------------------------------------------------------------------
937 // ciEnv::register_method
938 void ciEnv::register_method(ciMethod* target,
939 int entry_bci,
940 CodeOffsets* offsets,
941 int orig_pc_offset,
942 CodeBuffer* code_buffer,
943 int frame_words,
944 OopMapSet* oop_map_set,
945 ExceptionHandlerTable* handler_table,
946 ImplicitExceptionTable* inc_table,
947 AbstractCompiler* compiler,
948 int comp_level,
949 bool has_unsafe_access,
950 bool has_wide_vectors,
951 RTMState rtm_state) {
952 VM_ENTRY_MARK;
953 nmethod* nm = NULL;
954 {
955 // To prevent compile queue updates.
956 MutexLocker locker(MethodCompileQueue_lock, THREAD);
957
958 // Prevent SystemDictionary::add_to_hierarchy from running
959 // and invalidating our dependencies until we install this method.
960 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
961 MutexLocker ml(Compile_lock);
962 No_Safepoint_Verifier nsv;
963
964 // Change in Jvmti state may invalidate compilation.
965 if (!failing() && jvmti_state_changed()) {
966 record_failure("Jvmti state change invalidated dependencies");
967 }
968
969 // Change in DTrace flags may invalidate compilation.
970 if (!failing() &&
971 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
972 (!dtrace_method_probes() && DTraceMethodProbes) ||
973 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
974 record_failure("DTrace flags change invalidated dependencies");
975 }
976
977 if (!failing()) {
978 if (log() != NULL) {
979 // Log the dependencies which this compilation declares.
980 dependencies()->log_all_dependencies();
981 }
982
983 // Encode the dependencies now, so we can check them right away.
984 dependencies()->encode_content_bytes();
985
986 // Check for {class loads, evolution, breakpoints, ...} during compilation
987 validate_compile_task_dependencies(target);
988 }
989
990 methodHandle method(THREAD, target->get_Method());
991
992 #if INCLUDE_RTM_OPT
993 if (!failing() && (rtm_state != NoRTM) &&
994 (method()->method_data() != NULL) &&
995 (method()->method_data()->rtm_state() != rtm_state)) {
996 // Preemptive decompile if rtm state was changed.
997 record_failure("RTM state change invalidated rtm code");
998 }
999 #endif
1000
1001 if (failing()) {
1002 // While not a true deoptimization, it is a preemptive decompile.
1003 MethodData* mdo = method()->method_data();
1004 if (mdo != NULL) {
1005 mdo->inc_decompile_count();
1006 }
1007
1008 // All buffers in the CodeBuffer are allocated in the CodeCache.
1009 // If the code buffer is created on each compile attempt
1010 // as in C2, then it must be freed.
1011 code_buffer->free_blob();
1012 return;
1013 }
1014
1015 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1016 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1017
1018 nm = nmethod::new_nmethod(method,
1019 compile_id(),
1020 entry_bci,
1021 offsets,
1022 orig_pc_offset,
1023 debug_info(), dependencies(), code_buffer,
1024 frame_words, oop_map_set,
1025 handler_table, inc_table,
1026 compiler, comp_level);
1027 // Free codeBlobs
1028 code_buffer->free_blob();
1029
1030 if (nm != NULL) {
1031 nm->set_has_unsafe_access(has_unsafe_access);
1032 nm->set_has_wide_vectors(has_wide_vectors);
1033 #if INCLUDE_RTM_OPT
1034 nm->set_rtm_state(rtm_state);
1035 #endif
1036
1037 // Record successful registration.
1038 // (Put nm into the task handle *before* publishing to the Java heap.)
1039 if (task() != NULL) {
1040 task()->set_code(nm);
1041 }
1042
1043 if (entry_bci == InvocationEntryBci) {
1044 if (TieredCompilation) {
1045 // If there is an old version we're done with it
1046 nmethod* old = method->code();
1047 if (TraceMethodReplacement && old != NULL) {
1048 ResourceMark rm;
1049 char *method_name = method->name_and_sig_as_C_string();
1050 tty->print_cr("Replacing method %s", method_name);
1051 }
1052 if (old != NULL) {
1053 old->make_not_entrant();
1054 }
1055 }
1056 if (TraceNMethodInstalls) {
1057 ResourceMark rm;
1058 char *method_name = method->name_and_sig_as_C_string();
1059 ttyLocker ttyl;
1060 tty->print_cr("Installing method (%d) %s ",
1061 comp_level,
1062 method_name);
1063 }
1064 // Allow the code to be executed
1065 method->set_code(method, nm);
1066 } else {
1067 if (TraceNMethodInstalls) {
1068 ResourceMark rm;
1069 char *method_name = method->name_and_sig_as_C_string();
1070 ttyLocker ttyl;
1071 tty->print_cr("Installing osr method (%d) %s @ %d",
1072 comp_level,
1073 method_name,
1074 entry_bci);
1075 }
1076 method->method_holder()->add_osr_nmethod(nm);
1077 }
1078 }
1079 } // safepoints are allowed again
1080
1081 if (nm != NULL) {
1082 // JVMTI -- compiled method notification (must be done outside lock)
1083 nm->post_compiled_method_load_event();
1084 } else {
1085 // The CodeCache is full. Print out warning and disable compilation.
1086 record_failure("code cache is full");
1087 CompileBroker::handle_full_code_cache();
1088 }
1089 }
1090
1091
1092 // ------------------------------------------------------------------
1093 // ciEnv::find_system_klass
1094 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1095 VM_ENTRY_MARK;
1096 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1097 }
1098
1099 // ------------------------------------------------------------------
1100 // ciEnv::comp_level
1101 int ciEnv::comp_level() {
1102 if (task() == NULL) return CompLevel_highest_tier;
1103 return task()->comp_level();
1104 }
1105
1106 // ------------------------------------------------------------------
1107 // ciEnv::compile_id
1108 uint ciEnv::compile_id() {
1109 if (task() == NULL) return 0;
1110 return task()->compile_id();
1111 }
1112
1113 // ------------------------------------------------------------------
1114 // ciEnv::notice_inlined_method()
1115 void ciEnv::notice_inlined_method(ciMethod* method) {
1116 _num_inlined_bytecodes += method->code_size_for_inlining();
1117 }
1118
1119 // ------------------------------------------------------------------
1120 // ciEnv::num_inlined_bytecodes()
1121 int ciEnv::num_inlined_bytecodes() const {
1122 return _num_inlined_bytecodes;
1123 }
1124
1125 // ------------------------------------------------------------------
1126 // ciEnv::record_failure()
1127 void ciEnv::record_failure(const char* reason) {
1128 if (_failure_reason == NULL) {
1129 // Record the first failure reason.
1130 _failure_reason = reason;
1131 }
1132 }
1133
1134 // ------------------------------------------------------------------
1135 // ciEnv::record_method_not_compilable()
1136 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1137 int new_compilable =
1138 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1139
1140 // Only note transitions to a worse state
1141 if (new_compilable > _compilable) {
1142 if (log() != NULL) {
1143 if (all_tiers) {
1144 log()->elem("method_not_compilable");
1145 } else {
1146 log()->elem("method_not_compilable_at_tier level='%d'",
1147 current()->task()->comp_level());
1148 }
1149 }
1150 _compilable = new_compilable;
1151
1152 // Reset failure reason; this one is more important.
1153 _failure_reason = NULL;
1154 record_failure(reason);
1155 }
1156 }
1157
1158 // ------------------------------------------------------------------
1159 // ciEnv::record_out_of_memory_failure()
1160 void ciEnv::record_out_of_memory_failure() {
1161 // If memory is low, we stop compiling methods.
1162 record_method_not_compilable("out of memory");
1163 }
1164
1165 ciInstance* ciEnv::unloaded_ciinstance() {
1166 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1167 }
1168
1169 // ------------------------------------------------------------------
1170 // ciEnv::dump_replay_data*
1171
1172 // Don't change thread state and acquire any locks.
1173 // Safe to call from VM error reporter.
1174
1175 void ciEnv::dump_compile_data(outputStream* out) {
1176 CompileTask* task = this->task();
1177 Method* method = task->method();
1178 int entry_bci = task->osr_bci();
1179 int comp_level = task->comp_level();
1180 out->print("compile %s %s %s %d %d",
1181 method->klass_name()->as_quoted_ascii(),
1182 method->name()->as_quoted_ascii(),
1183 method->signature()->as_quoted_ascii(),
1184 entry_bci, comp_level);
1185 if (compiler_data() != NULL) {
1186 if (is_c2_compile(comp_level)) { // C2 or Shark
1187 #ifdef COMPILER2
1188 // Dump C2 inlining data.
1189 ((Compile*)compiler_data())->dump_inline_data(out);
1190 #endif
1191 } else if (is_c1_compile(comp_level)) { // C1
1192 #ifdef COMPILER1
1193 // Dump C1 inlining data.
1194 ((Compilation*)compiler_data())->dump_inline_data(out);
1195 #endif
1196 }
1197 }
1198 out->cr();
1199 }
1200
1201 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1202 ResourceMark rm;
1203 #if INCLUDE_JVMTI
1204 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1205 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1206 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1207 #endif // INCLUDE_JVMTI
1208
1209 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1210 out->print_cr("# %d ciObject found", objects->length());
1211 for (int i = 0; i < objects->length(); i++) {
1212 objects->at(i)->dump_replay_data(out);
1213 }
1214 dump_compile_data(out);
1215 out->flush();
1216 }
1217
1218 void ciEnv::dump_replay_data(outputStream* out) {
1219 GUARDED_VM_ENTRY(
1220 MutexLocker ml(Compile_lock);
1221 dump_replay_data_unsafe(out);
1222 )
1223 }
1224
1225 void ciEnv::dump_replay_data(int compile_id) {
1226 static char buffer[O_BUFLEN];
1227 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1228 if (ret > 0) {
1229 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1230 if (fd != -1) {
1231 FILE* replay_data_file = os::open(fd, "w");
1232 if (replay_data_file != NULL) {
1233 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1234 dump_replay_data(&replay_data_stream);
1235 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1236 } else {
1237 tty->print_cr("# Can't open file to dump replay data.");
1238 }
1239 }
1240 }
1241 }
1242
1243 void ciEnv::dump_inline_data(int compile_id) {
1244 static char buffer[O_BUFLEN];
1245 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1246 if (ret > 0) {
1247 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1248 if (fd != -1) {
1249 FILE* inline_data_file = os::open(fd, "w");
1250 if (inline_data_file != NULL) {
1251 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1252 GUARDED_VM_ENTRY(
1253 MutexLocker ml(Compile_lock);
1254 dump_compile_data(&replay_data_stream);
1255 )
1256 replay_data_stream.flush();
1257 tty->print("# Compiler inline data is saved as: ");
1258 tty->print_cr("%s", buffer);
1259 } else {
1260 tty->print_cr("# Can't open file to dump inline data.");
1261 }
1262 }
1263 }
1264 }