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