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/codeCache.hpp"
38 #include "code/scopeDesc.hpp"
39 #include "compiler/compileBroker.hpp"
40 #include "compiler/compileLog.hpp"
41 #include "compiler/compilerOracle.hpp"
42 #include "gc_interface/collectedHeap.inline.hpp"
43 #include "interpreter/linkResolver.hpp"
44 #include "memory/allocation.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "memory/universe.inline.hpp"
47 #include "oops/methodData.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "oops/oop.inline2.hpp"
51 #include "prims/jvmtiExport.hpp"
52 #include "runtime/init.hpp"
53 #include "runtime/reflection.hpp"
54 #include "runtime/sharedRuntime.hpp"
55 #include "runtime/thread.inline.hpp"
56 #include "utilities/dtrace.hpp"
57 #include "utilities/macros.hpp"
58 #ifdef COMPILER1
59 #include "c1/c1_Runtime1.hpp"
60 #endif
61 #ifdef COMPILER2
62 #include "opto/runtime.hpp"
63 #endif
64
65 // ciEnv
66 //
67 // This class is the top level broker for requests from the compiler
68 // to the VM.
69
70 ciObject* ciEnv::_null_object_instance;
71
72 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
73 WK_KLASSES_DO(WK_KLASS_DEFN)
74 #undef WK_KLASS_DEFN
75
76 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
77 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
78 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
79
80 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
81 jobject ciEnv::_ArrayStoreException_handle = NULL;
82 jobject ciEnv::_ClassCastException_handle = NULL;
83
84 #ifndef PRODUCT
85 static bool firstEnv = true;
86 #endif /* PRODUCT */
87
88 // ------------------------------------------------------------------
89 // ciEnv::ciEnv
90 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter)
91 : _ciEnv_arena(mtCompiler) {
92 VM_ENTRY_MARK;
93
94 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
95 thread->set_env(this);
96 assert(ciEnv::current() == this, "sanity");
97
98 _oop_recorder = NULL;
99 _debug_info = NULL;
100 _dependencies = NULL;
101 _failure_reason = NULL;
102 _compilable = MethodCompilable;
103 _break_at_compile = false;
104 _compiler_data = NULL;
105 #ifndef PRODUCT
106 assert(!firstEnv, "not initialized properly");
107 #endif /* !PRODUCT */
108
109 _system_dictionary_modification_counter = system_dictionary_modification_counter;
110 _num_inlined_bytecodes = 0;
111 assert(task == NULL || thread->task() == task, "sanity");
112 _task = task;
113 _log = NULL;
114
115 // Temporary buffer for creating symbols and such.
116 _name_buffer = NULL;
117 _name_buffer_len = 0;
118
119 _arena = &_ciEnv_arena;
120 _factory = new (_arena) ciObjectFactory(_arena, 128);
121
122 // Preload commonly referenced system ciObjects.
123
124 // During VM initialization, these instances have not yet been created.
125 // Assertions ensure that these instances are not accessed before
126 // their initialization.
127
128 assert(Universe::is_fully_initialized(), "should be complete");
129
130 oop o = Universe::null_ptr_exception_instance();
131 assert(o != NULL, "should have been initialized");
132 _NullPointerException_instance = get_object(o)->as_instance();
133 o = Universe::arithmetic_exception_instance();
134 assert(o != NULL, "should have been initialized");
135 _ArithmeticException_instance = get_object(o)->as_instance();
136
137 _ArrayIndexOutOfBoundsException_instance = NULL;
138 _ArrayStoreException_instance = NULL;
139 _ClassCastException_instance = NULL;
140 _the_null_string = NULL;
141 _the_min_jint_string = NULL;
142
143 _jvmti_can_hotswap_or_post_breakpoint = false;
144 _jvmti_can_access_local_variables = false;
145 _jvmti_can_post_on_exceptions = false;
146 _jvmti_can_pop_frame = false;
147 }
148
149 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
150 ASSERT_IN_VM;
151
152 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
153 CompilerThread* current_thread = CompilerThread::current();
154 assert(current_thread->env() == NULL, "must be");
155 current_thread->set_env(this);
156 assert(ciEnv::current() == this, "sanity");
157
158 _oop_recorder = NULL;
159 _debug_info = NULL;
160 _dependencies = NULL;
161 _failure_reason = NULL;
162 _compilable = MethodCompilable_never;
163 _break_at_compile = false;
164 _compiler_data = NULL;
165 #ifndef PRODUCT
166 assert(firstEnv, "must be first");
167 firstEnv = false;
168 #endif /* !PRODUCT */
169
170 _system_dictionary_modification_counter = 0;
171 _num_inlined_bytecodes = 0;
172 _task = NULL;
173 _log = NULL;
174
175 // Temporary buffer for creating symbols and such.
176 _name_buffer = NULL;
177 _name_buffer_len = 0;
178
179 _arena = arena;
180 _factory = new (_arena) ciObjectFactory(_arena, 128);
181
182 // Preload commonly referenced system ciObjects.
183
184 // During VM initialization, these instances have not yet been created.
185 // Assertions ensure that these instances are not accessed before
186 // their initialization.
187
188 assert(Universe::is_fully_initialized(), "must be");
189
190 _NullPointerException_instance = NULL;
191 _ArithmeticException_instance = NULL;
192 _ArrayIndexOutOfBoundsException_instance = NULL;
193 _ArrayStoreException_instance = NULL;
194 _ClassCastException_instance = NULL;
195 _the_null_string = NULL;
196 _the_min_jint_string = NULL;
197
198 _jvmti_can_hotswap_or_post_breakpoint = false;
199 _jvmti_can_access_local_variables = false;
200 _jvmti_can_post_on_exceptions = false;
201 _jvmti_can_pop_frame = false;
202 }
203
204 ciEnv::~ciEnv() {
205 CompilerThread* current_thread = CompilerThread::current();
206 _factory->remove_symbols();
207 // Need safepoint to clear the env on the thread. RedefineClasses might
208 // be reading it.
209 GUARDED_VM_ENTRY(current_thread->set_env(NULL);)
210 }
211
212 // ------------------------------------------------------------------
213 // Cache Jvmti state
214 void ciEnv::cache_jvmti_state() {
215 VM_ENTRY_MARK;
216 // Get Jvmti capabilities under lock to get consistant values.
217 MutexLocker mu(JvmtiThreadState_lock);
218 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
219 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
220 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
221 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
222 }
223
224 bool ciEnv::should_retain_local_variables() const {
225 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame;
226 }
227
228 bool ciEnv::jvmti_state_changed() const {
229 if (!_jvmti_can_access_local_variables &&
230 JvmtiExport::can_access_local_variables()) {
231 return true;
232 }
233 if (!_jvmti_can_hotswap_or_post_breakpoint &&
234 JvmtiExport::can_hotswap_or_post_breakpoint()) {
235 return true;
236 }
237 if (!_jvmti_can_post_on_exceptions &&
238 JvmtiExport::can_post_on_exceptions()) {
239 return true;
240 }
241 if (!_jvmti_can_pop_frame &&
242 JvmtiExport::can_pop_frame()) {
243 return true;
244 }
245 return false;
246 }
247
248 // ------------------------------------------------------------------
249 // Cache DTrace flags
250 void ciEnv::cache_dtrace_flags() {
251 // Need lock?
252 _dtrace_extended_probes = ExtendedDTraceProbes;
253 if (_dtrace_extended_probes) {
254 _dtrace_monitor_probes = true;
255 _dtrace_method_probes = true;
256 _dtrace_alloc_probes = true;
257 } else {
258 _dtrace_monitor_probes = DTraceMonitorProbes;
259 _dtrace_method_probes = DTraceMethodProbes;
260 _dtrace_alloc_probes = DTraceAllocProbes;
261 }
262 }
263
264 // ------------------------------------------------------------------
265 // helper for lazy exception creation
266 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
267 VM_ENTRY_MARK;
268 if (handle == NULL) {
269 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
270 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
271 jobject objh = NULL;
272 if (!HAS_PENDING_EXCEPTION && k != NULL) {
273 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
274 if (!HAS_PENDING_EXCEPTION)
275 objh = JNIHandles::make_global(obj);
276 }
277 if (HAS_PENDING_EXCEPTION) {
278 CLEAR_PENDING_EXCEPTION;
279 } else {
280 handle = objh;
281 }
282 }
283 oop obj = JNIHandles::resolve(handle);
284 return obj == NULL? NULL: get_object(obj)->as_instance();
285 }
286
287 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
288 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
289 _ArrayIndexOutOfBoundsException_instance
290 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
291 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
292 }
293 return _ArrayIndexOutOfBoundsException_instance;
294 }
295 ciInstance* ciEnv::ArrayStoreException_instance() {
296 if (_ArrayStoreException_instance == NULL) {
297 _ArrayStoreException_instance
298 = get_or_create_exception(_ArrayStoreException_handle,
299 vmSymbols::java_lang_ArrayStoreException());
300 }
301 return _ArrayStoreException_instance;
302 }
303 ciInstance* ciEnv::ClassCastException_instance() {
304 if (_ClassCastException_instance == NULL) {
305 _ClassCastException_instance
306 = get_or_create_exception(_ClassCastException_handle,
307 vmSymbols::java_lang_ClassCastException());
308 }
309 return _ClassCastException_instance;
310 }
311
312 ciInstance* ciEnv::the_null_string() {
313 if (_the_null_string == NULL) {
314 VM_ENTRY_MARK;
315 _the_null_string = get_object(Universe::the_null_string())->as_instance();
316 }
317 return _the_null_string;
318 }
319
320 ciInstance* ciEnv::the_min_jint_string() {
321 if (_the_min_jint_string == NULL) {
322 VM_ENTRY_MARK;
323 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
324 }
325 return _the_min_jint_string;
326 }
327
328 // ------------------------------------------------------------------
329 // ciEnv::get_method_from_handle
330 ciMethod* ciEnv::get_method_from_handle(Method* method) {
331 VM_ENTRY_MARK;
332 return get_metadata(method)->as_method();
333 }
334
335 // ------------------------------------------------------------------
336 // ciEnv::array_element_offset_in_bytes
337 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
338 VM_ENTRY_MARK;
339 objArrayOop a = (objArrayOop)a_h->get_oop();
340 assert(a->is_objArray(), "");
341 int length = a->length();
342 oop o = o_h->get_oop();
343 for (int i = 0; i < length; i++) {
344 if (a->obj_at(i) == o) return i;
345 }
346 return -1;
347 }
348
349
350 // ------------------------------------------------------------------
351 // ciEnv::check_klass_accessiblity
352 //
353 // Note: the logic of this method should mirror the logic of
354 // ConstantPool::verify_constant_pool_resolve.
355 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
356 Klass* resolved_klass) {
357 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
358 return true;
359 }
360 if (accessing_klass->is_obj_array_klass()) {
361 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
362 }
363 if (!accessing_klass->is_instance_klass()) {
364 return true;
365 }
366
367 if (resolved_klass->oop_is_objArray()) {
368 // Find the element klass, if this is an array.
369 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
370 }
371 if (resolved_klass->oop_is_instance()) {
372 return Reflection::verify_class_access(accessing_klass->get_Klass(),
373 resolved_klass,
374 true);
375 }
376 return true;
377 }
378
379 // ------------------------------------------------------------------
380 // ciEnv::get_klass_by_name_impl
381 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
382 constantPoolHandle cpool,
383 ciSymbol* name,
384 bool require_local) {
385 ASSERT_IN_VM;
386 EXCEPTION_CONTEXT;
387
388 // Now we need to check the SystemDictionary
389 Symbol* sym = name->get_symbol();
390 if (sym->byte_at(0) == 'L' &&
391 sym->byte_at(sym->utf8_length()-1) == ';') {
392 // This is a name from a signature. Strip off the trimmings.
393 // Call recursive to keep scope of strippedsym.
394 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
395 sym->utf8_length()-2,
396 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
397 ciSymbol* strippedname = get_symbol(strippedsym);
398 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
399 }
400
401 // Check for prior unloaded klass. The SystemDictionary's answers
402 // can vary over time but the compiler needs consistency.
403 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
404 if (unloaded_klass != NULL) {
405 if (require_local) return NULL;
406 return unloaded_klass;
407 }
408
409 Handle loader(THREAD, (oop)NULL);
410 Handle domain(THREAD, (oop)NULL);
411 if (accessing_klass != NULL) {
412 loader = Handle(THREAD, accessing_klass->loader());
413 domain = Handle(THREAD, accessing_klass->protection_domain());
414 }
415
416 // setup up the proper type to return on OOM
417 ciKlass* fail_type;
418 if (sym->byte_at(0) == '[') {
419 fail_type = _unloaded_ciobjarrayklass;
420 } else {
421 fail_type = _unloaded_ciinstance_klass;
422 }
423 KlassHandle found_klass;
424 {
425 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
426 MutexLocker ml(Compile_lock);
427 Klass* kls;
428 if (!require_local) {
429 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
430 KILL_COMPILE_ON_FATAL_(fail_type));
431 } else {
432 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
433 KILL_COMPILE_ON_FATAL_(fail_type));
434 }
435 found_klass = KlassHandle(THREAD, kls);
436 }
437
438 // If we fail to find an array klass, look again for its element type.
439 // The element type may be available either locally or via constraints.
440 // In either case, if we can find the element type in the system dictionary,
441 // we must build an array type around it. The CI requires array klasses
442 // to be loaded if their element klasses are loaded, except when memory
443 // is exhausted.
444 if (sym->byte_at(0) == '[' &&
445 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
446 // We have an unloaded array.
447 // Build it on the fly if the element class exists.
448 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
449 sym->utf8_length()-1,
450 KILL_COMPILE_ON_FATAL_(fail_type));
451
452 // Get element ciKlass recursively.
453 ciKlass* elem_klass =
454 get_klass_by_name_impl(accessing_klass,
455 cpool,
456 get_symbol(elem_sym),
457 require_local);
458 if (elem_klass != NULL && elem_klass->is_loaded()) {
459 // Now make an array for it
460 return ciObjArrayKlass::make_impl(elem_klass);
461 }
462 }
463
464 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
465 // Look inside the constant pool for pre-resolved class entries.
466 for (int i = cpool->length() - 1; i >= 1; i--) {
467 if (cpool->tag_at(i).is_klass()) {
468 Klass* kls = cpool->resolved_klass_at(i);
469 if (kls->name() == sym) {
470 found_klass = KlassHandle(THREAD, kls);
471 break;
472 }
473 }
474 }
475 }
476
477 if (found_klass() != NULL) {
478 // Found it. Build a CI handle.
479 return get_klass(found_klass());
480 }
481
482 if (require_local) return NULL;
483
484 // Not yet loaded into the VM, or not governed by loader constraints.
485 // Make a CI representative for it.
486 return get_unloaded_klass(accessing_klass, name);
487 }
488
489 // ------------------------------------------------------------------
490 // ciEnv::get_klass_by_name
491 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
492 ciSymbol* klass_name,
493 bool require_local) {
494 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
495 constantPoolHandle(),
496 klass_name,
497 require_local);)
498 }
499
500 // ------------------------------------------------------------------
501 // ciEnv::get_klass_by_index_impl
502 //
503 // Implementation of get_klass_by_index.
504 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool,
505 int index,
506 bool& is_accessible,
507 ciInstanceKlass* accessor) {
508 EXCEPTION_CONTEXT;
509 KlassHandle klass; // = NULL;
510 Symbol* klass_name = NULL;
511
512 if (cpool->tag_at(index).is_symbol()) {
513 klass_name = cpool->symbol_at(index);
514 } else {
515 // Check if it's resolved if it's not a symbol constant pool entry.
516 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index));
517 // Try to look it up by name.
518 if (klass.is_null()) {
519 klass_name = cpool->klass_name_at(index);
520 }
521 }
522
523 if (klass.is_null()) {
524 // Not found in constant pool. Use the name to do the lookup.
525 ciKlass* k = get_klass_by_name_impl(accessor,
526 cpool,
527 get_symbol(klass_name),
528 false);
529 // Calculate accessibility the hard way.
530 if (!k->is_loaded()) {
531 is_accessible = false;
532 } else if (k->loader() != accessor->loader() &&
533 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
534 // Loaded only remotely. Not linked yet.
535 is_accessible = false;
536 } else {
537 // Linked locally, and we must also check public/private, etc.
538 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
539 }
540 return k;
541 }
542
543 // Check for prior unloaded klass. The SystemDictionary's answers
544 // can vary over time but the compiler needs consistency.
545 ciSymbol* name = get_symbol(klass()->name());
546 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
547 if (unloaded_klass != NULL) {
548 is_accessible = false;
549 return unloaded_klass;
550 }
551
552 // It is known to be accessible, since it was found in the constant pool.
553 is_accessible = true;
554 return get_klass(klass());
555 }
556
557 // ------------------------------------------------------------------
558 // ciEnv::get_klass_by_index
559 //
560 // Get a klass from the constant pool.
561 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool,
562 int index,
563 bool& is_accessible,
564 ciInstanceKlass* accessor) {
565 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
566 }
567
568 // ------------------------------------------------------------------
569 // ciEnv::get_constant_by_index_impl
570 //
571 // Implementation of get_constant_by_index().
572 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool,
573 int pool_index, int cache_index,
574 ciInstanceKlass* accessor) {
575 bool ignore_will_link;
576 EXCEPTION_CONTEXT;
577 int index = pool_index;
578 if (cache_index >= 0) {
579 assert(index < 0, "only one kind of index at a time");
580 oop obj = cpool->resolved_references()->obj_at(cache_index);
581 if (obj != NULL) {
582 ciObject* ciobj = get_object(obj);
583 return ciConstant(T_OBJECT, ciobj);
584 }
585 index = cpool->object_to_cp_index(cache_index);
586 }
587 constantTag tag = cpool->tag_at(index);
588 if (tag.is_int()) {
589 return ciConstant(T_INT, (jint)cpool->int_at(index));
590 } else if (tag.is_long()) {
591 return ciConstant((jlong)cpool->long_at(index));
592 } else if (tag.is_float()) {
593 return ciConstant((jfloat)cpool->float_at(index));
594 } else if (tag.is_double()) {
595 return ciConstant((jdouble)cpool->double_at(index));
596 } else if (tag.is_string()) {
597 oop string = NULL;
598 assert(cache_index >= 0, "should have a cache index");
599 if (cpool->is_pseudo_string_at(index)) {
600 string = cpool->pseudo_string_at(index, cache_index);
601 } else {
602 string = cpool->string_at(index, cache_index, THREAD);
603 if (HAS_PENDING_EXCEPTION) {
604 CLEAR_PENDING_EXCEPTION;
605 record_out_of_memory_failure();
606 return ciConstant();
607 }
608 }
609 ciObject* constant = get_object(string);
610 assert (constant->is_instance(), "must be an instance, or not? ");
611 return ciConstant(T_OBJECT, constant);
612 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
613 // 4881222: allow ldc to take a class type
614 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
615 if (HAS_PENDING_EXCEPTION) {
616 CLEAR_PENDING_EXCEPTION;
617 record_out_of_memory_failure();
618 return ciConstant();
619 }
620 assert (klass->is_instance_klass() || klass->is_array_klass(),
621 "must be an instance or array klass ");
622 return ciConstant(T_OBJECT, klass->java_mirror());
623 } else if (tag.is_method_type()) {
624 // must execute Java code to link this CP entry into cache[i].f1
625 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
626 ciObject* ciobj = get_unloaded_method_type_constant(signature);
627 return ciConstant(T_OBJECT, ciobj);
628 } else if (tag.is_method_handle()) {
629 // must execute Java code to link this CP entry into cache[i].f1
630 int ref_kind = cpool->method_handle_ref_kind_at(index);
631 int callee_index = cpool->method_handle_klass_index_at(index);
632 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
633 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
634 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
635 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
636 return ciConstant(T_OBJECT, ciobj);
637 } else {
638 ShouldNotReachHere();
639 return ciConstant();
640 }
641 }
642
643 // ------------------------------------------------------------------
644 // ciEnv::get_constant_by_index
645 //
646 // Pull a constant out of the constant pool. How appropriate.
647 //
648 // Implementation note: this query is currently in no way cached.
649 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool,
650 int pool_index, int cache_index,
651 ciInstanceKlass* accessor) {
652 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
653 }
654
655 // ------------------------------------------------------------------
656 // ciEnv::get_field_by_index_impl
657 //
658 // Implementation of get_field_by_index.
659 //
660 // Implementation note: the results of field lookups are cached
661 // in the accessor klass.
662 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
663 int index) {
664 ciConstantPoolCache* cache = accessor->field_cache();
665 if (cache == NULL) {
666 ciField* field = new (arena()) ciField(accessor, index);
667 return field;
668 } else {
669 ciField* field = (ciField*)cache->get(index);
670 if (field == NULL) {
671 field = new (arena()) ciField(accessor, index);
672 cache->insert(index, field);
673 }
674 return field;
675 }
676 }
677
678 // ------------------------------------------------------------------
679 // ciEnv::get_field_by_index
680 //
681 // Get a field by index from a klass's constant pool.
682 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
683 int index) {
684 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
685 }
686
687 // ------------------------------------------------------------------
688 // ciEnv::lookup_method
689 //
690 // Perform an appropriate method lookup based on accessor, holder,
691 // name, signature, and bytecode.
692 Method* ciEnv::lookup_method(InstanceKlass* accessor,
693 InstanceKlass* holder,
694 Symbol* name,
695 Symbol* sig,
696 Bytecodes::Code bc) {
697 EXCEPTION_CONTEXT;
698 KlassHandle h_accessor(THREAD, accessor);
699 KlassHandle h_holder(THREAD, holder);
700 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL));
701 methodHandle dest_method;
702 switch (bc) {
703 case Bytecodes::_invokestatic:
704 dest_method =
705 LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor);
706 break;
707 case Bytecodes::_invokespecial:
708 dest_method =
709 LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor);
710 break;
711 case Bytecodes::_invokeinterface:
712 dest_method =
713 LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig,
714 h_accessor, true);
715 break;
716 case Bytecodes::_invokevirtual:
717 dest_method =
718 LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig,
719 h_accessor, true);
720 break;
721 default: ShouldNotReachHere();
722 }
723
724 return dest_method();
725 }
726
727
728 // ------------------------------------------------------------------
729 // ciEnv::get_method_by_index_impl
730 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool,
731 int index, Bytecodes::Code bc,
732 ciInstanceKlass* accessor) {
733 if (bc == Bytecodes::_invokedynamic) {
734 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
735 bool is_resolved = !cpce->is_f1_null();
736 // FIXME: code generation could allow for null (unlinked) call site
737 // The call site could be made patchable as follows:
738 // Load the appendix argument from the constant pool.
739 // Test the appendix argument and jump to a known deopt routine if it is null.
740 // Jump through a patchable call site, which is initially a deopt routine.
741 // Patch the call site to the nmethod entry point of the static compiled lambda form.
742 // As with other two-component call sites, both values must be independently verified.
743
744 if (is_resolved) {
745 // Get the invoker Method* from the constant pool.
746 // (The appendix argument, if any, will be noted in the method's signature.)
747 Method* adapter = cpce->f1_as_method();
748 return get_method(adapter);
749 }
750
751 // Fake a method that is equivalent to a declared method.
752 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
753 ciSymbol* name = ciSymbol::invokeBasic_name();
754 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
755 return get_unloaded_method(holder, name, signature, accessor);
756 } else {
757 const int holder_index = cpool->klass_ref_index_at(index);
758 bool holder_is_accessible;
759 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
760 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder);
761
762 // Get the method's name and signature.
763 Symbol* name_sym = cpool->name_ref_at(index);
764 Symbol* sig_sym = cpool->signature_ref_at(index);
765
766 if (cpool->has_preresolution()
767 || (holder == ciEnv::MethodHandle_klass() &&
768 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
769 // Short-circuit lookups for JSR 292-related call sites.
770 // That is, do not rely only on name-based lookups, because they may fail
771 // if the names are not resolvable in the boot class loader (7056328).
772 switch (bc) {
773 case Bytecodes::_invokevirtual:
774 case Bytecodes::_invokeinterface:
775 case Bytecodes::_invokespecial:
776 case Bytecodes::_invokestatic:
777 {
778 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
779 if (m != NULL) {
780 return get_method(m);
781 }
782 }
783 break;
784 }
785 }
786
787 if (holder_is_accessible) { // Our declared holder is loaded.
788 InstanceKlass* lookup = declared_holder->get_instanceKlass();
789 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
790 if (m != NULL &&
791 (bc == Bytecodes::_invokestatic
792 ? m->method_holder()->is_not_initialized()
793 : !m->method_holder()->is_loaded())) {
794 m = NULL;
795 }
796 #ifdef ASSERT
797 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
798 m = NULL;
799 }
800 #endif
801 if (m != NULL) {
802 // We found the method.
803 return get_method(m);
804 }
805 }
806
807 // Either the declared holder was not loaded, or the method could
808 // not be found. Create a dummy ciMethod to represent the failed
809 // lookup.
810 ciSymbol* name = get_symbol(name_sym);
811 ciSymbol* signature = get_symbol(sig_sym);
812 return get_unloaded_method(declared_holder, name, signature, accessor);
813 }
814 }
815
816
817 // ------------------------------------------------------------------
818 // ciEnv::get_instance_klass_for_declared_method_holder
819 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
820 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
821 // instead of a ciInstanceKlass. For that case simply pretend that the
822 // declared holder is Object.clone since that's where the call will bottom out.
823 // A more correct fix would trickle out through many interfaces in CI,
824 // requiring ciInstanceKlass* to become ciKlass* and many more places would
825 // require checks to make sure the expected type was found. Given that this
826 // only occurs for clone() the more extensive fix seems like overkill so
827 // instead we simply smear the array type into Object.
828 guarantee(method_holder != NULL, "no method holder");
829 if (method_holder->is_instance_klass()) {
830 return method_holder->as_instance_klass();
831 } else if (method_holder->is_array_klass()) {
832 return current()->Object_klass();
833 } else {
834 ShouldNotReachHere();
835 }
836 return NULL;
837 }
838
839
840 // ------------------------------------------------------------------
841 // ciEnv::get_method_by_index
842 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool,
843 int index, Bytecodes::Code bc,
844 ciInstanceKlass* accessor) {
845 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
846 }
847
848
849 // ------------------------------------------------------------------
850 // ciEnv::name_buffer
851 char *ciEnv::name_buffer(int req_len) {
852 if (_name_buffer_len < req_len) {
853 if (_name_buffer == NULL) {
854 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
855 _name_buffer_len = req_len;
856 } else {
857 _name_buffer =
858 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
859 _name_buffer_len = req_len;
860 }
861 }
862 return _name_buffer;
863 }
864
865 // ------------------------------------------------------------------
866 // ciEnv::is_in_vm
867 bool ciEnv::is_in_vm() {
868 return JavaThread::current()->thread_state() == _thread_in_vm;
869 }
870
871 bool ciEnv::system_dictionary_modification_counter_changed() {
872 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
873 }
874
875 // ------------------------------------------------------------------
876 // ciEnv::validate_compile_task_dependencies
877 //
878 // Check for changes during compilation (e.g. class loads, evolution,
879 // breakpoints, call site invalidation).
880 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
881 if (failing()) return; // no need for further checks
882
883 // First, check non-klass dependencies as we might return early and
884 // not check klass dependencies if the system dictionary
885 // modification counter hasn't changed (see below).
886 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
887 if (deps.is_klass_type()) continue; // skip klass dependencies
888 Klass* witness = deps.check_dependency();
889 if (witness != NULL) {
890 record_failure("invalid non-klass dependency");
891 return;
892 }
893 }
894
895 // Klass dependencies must be checked when the system dictionary
896 // changes. If logging is enabled all violated dependences will be
897 // recorded in the log. In debug mode check dependencies even if
898 // the system dictionary hasn't changed to verify that no invalid
899 // dependencies were inserted. Any violated dependences in this
900 // case are dumped to the tty.
901 bool counter_changed = system_dictionary_modification_counter_changed();
902
903 bool verify_deps = trueInDebug;
904 if (!counter_changed && !verify_deps) return;
905
906 int klass_violations = 0;
907 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
908 if (!deps.is_klass_type()) continue; // skip non-klass dependencies
909 Klass* witness = deps.check_dependency();
910 if (witness != NULL) {
911 klass_violations++;
912 if (!counter_changed) {
913 // Dependence failed but counter didn't change. Log a message
914 // describing what failed and allow the assert at the end to
915 // trigger.
916 deps.print_dependency(witness);
917 } else if (xtty == NULL) {
918 // If we're not logging then a single violation is sufficient,
919 // otherwise we want to log all the dependences which were
920 // violated.
921 break;
922 }
923 }
924 }
925
926 if (klass_violations != 0) {
927 #ifdef ASSERT
928 if (!counter_changed && !PrintCompilation) {
929 // Print out the compile task that failed
930 _task->print_line();
931 }
932 #endif
933 assert(counter_changed, "failed dependencies, but counter didn't change");
934 record_failure("concurrent class loading");
935 }
936 }
937
938 // ------------------------------------------------------------------
939 // ciEnv::register_method
940 void ciEnv::register_method(ciMethod* target,
941 int entry_bci,
942 CodeOffsets* offsets,
943 int orig_pc_offset,
944 CodeBuffer* code_buffer,
945 int frame_words,
946 OopMapSet* oop_map_set,
947 ExceptionHandlerTable* handler_table,
948 ImplicitExceptionTable* inc_table,
949 AbstractCompiler* compiler,
950 int comp_level,
951 bool has_unsafe_access,
952 bool has_wide_vectors,
953 RTMState rtm_state) {
954 VM_ENTRY_MARK;
955 nmethod* nm = NULL;
956 {
957 // To prevent compile queue updates.
958 MutexLocker locker(MethodCompileQueue_lock, THREAD);
959
960 // Prevent SystemDictionary::add_to_hierarchy from running
961 // and invalidating our dependencies until we install this method.
962 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
963 MutexLocker ml(Compile_lock);
964 No_Safepoint_Verifier nsv;
965
966 // Change in Jvmti state may invalidate compilation.
967 if (!failing() && jvmti_state_changed()) {
968 record_failure("Jvmti state change invalidated dependencies");
969 }
970
971 // Change in DTrace flags may invalidate compilation.
972 if (!failing() &&
973 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
974 (!dtrace_method_probes() && DTraceMethodProbes) ||
975 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
976 record_failure("DTrace flags change invalidated dependencies");
977 }
978
979 if (!failing()) {
980 if (log() != NULL) {
981 // Log the dependencies which this compilation declares.
982 dependencies()->log_all_dependencies();
983 }
984
985 // Encode the dependencies now, so we can check them right away.
986 dependencies()->encode_content_bytes();
987
988 // Check for {class loads, evolution, breakpoints, ...} during compilation
989 validate_compile_task_dependencies(target);
990 }
991
992 methodHandle method(THREAD, target->get_Method());
993
994 #if INCLUDE_RTM_OPT
995 if (!failing() && (rtm_state != NoRTM) &&
996 (method()->method_data() != NULL) &&
997 (method()->method_data()->rtm_state() != rtm_state)) {
998 // Preemptive decompile if rtm state was changed.
999 record_failure("RTM state change invalidated rtm code");
1000 }
1001 #endif
1002
1003 if (failing()) {
1004 // While not a true deoptimization, it is a preemptive decompile.
1005 MethodData* mdo = method()->method_data();
1006 if (mdo != NULL) {
1007 mdo->inc_decompile_count();
1008 }
1009
1010 // All buffers in the CodeBuffer are allocated in the CodeCache.
1011 // If the code buffer is created on each compile attempt
1012 // as in C2, then it must be freed.
1013 code_buffer->free_blob();
1014 return;
1015 }
1016
1017 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1018 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1019
1020 nm = nmethod::new_nmethod(method,
1021 compile_id(),
1022 entry_bci,
1023 offsets,
1024 orig_pc_offset,
1025 debug_info(), dependencies(), code_buffer,
1026 frame_words, oop_map_set,
1027 handler_table, inc_table,
1028 compiler, comp_level);
1029 // Free codeBlobs
1030 code_buffer->free_blob();
1031
1032 if (nm != NULL) {
1033 nm->set_has_unsafe_access(has_unsafe_access);
1034 nm->set_has_wide_vectors(has_wide_vectors);
1035 #if INCLUDE_RTM_OPT
1036 nm->set_rtm_state(rtm_state);
1037 #endif
1038
1039 // Record successful registration.
1040 // (Put nm into the task handle *before* publishing to the Java heap.)
1041 if (task() != NULL) {
1042 task()->set_code(nm);
1043 }
1044
1045 if (entry_bci == InvocationEntryBci) {
1046 if (TieredCompilation) {
1047 // If there is an old version we're done with it
1048 nmethod* old = method->code();
1049 if (TraceMethodReplacement && old != NULL) {
1050 ResourceMark rm;
1051 char *method_name = method->name_and_sig_as_C_string();
1052 tty->print_cr("Replacing method %s", method_name);
1053 }
1054 if (old != NULL) {
1055 old->make_not_entrant();
1056 }
1057 }
1058 if (TraceNMethodInstalls) {
1059 ResourceMark rm;
1060 char *method_name = method->name_and_sig_as_C_string();
1061 ttyLocker ttyl;
1062 tty->print_cr("Installing method (%d) %s ",
1063 comp_level,
1064 method_name);
1065 }
1066 // Allow the code to be executed
1067 method->set_code(method, nm);
1068 } else {
1069 if (TraceNMethodInstalls) {
1070 ResourceMark rm;
1071 char *method_name = method->name_and_sig_as_C_string();
1072 ttyLocker ttyl;
1073 tty->print_cr("Installing osr method (%d) %s @ %d",
1074 comp_level,
1075 method_name,
1076 entry_bci);
1077 }
1078 method->method_holder()->add_osr_nmethod(nm);
1079 }
1080 }
1081 } // safepoints are allowed again
1082
1083 if (nm != NULL) {
1084 // JVMTI -- compiled method notification (must be done outside lock)
1085 nm->post_compiled_method_load_event();
1086 } else {
1087 // The CodeCache is full. Print out warning and disable compilation.
1088 record_failure("code cache is full");
1089 CompileBroker::handle_full_code_cache(CodeCache::get_code_blob_type(comp_level));
1090 }
1091 }
1092
1093
1094 // ------------------------------------------------------------------
1095 // ciEnv::find_system_klass
1096 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1097 VM_ENTRY_MARK;
1098 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1099 }
1100
1101 // ------------------------------------------------------------------
1102 // ciEnv::comp_level
1103 int ciEnv::comp_level() {
1104 if (task() == NULL) return CompLevel_highest_tier;
1105 return task()->comp_level();
1106 }
1107
1108 // ------------------------------------------------------------------
1109 // ciEnv::compile_id
1110 uint ciEnv::compile_id() {
1111 if (task() == NULL) return 0;
1112 return task()->compile_id();
1113 }
1114
1115 // ------------------------------------------------------------------
1116 // ciEnv::notice_inlined_method()
1117 void ciEnv::notice_inlined_method(ciMethod* method) {
1118 _num_inlined_bytecodes += method->code_size_for_inlining();
1119 }
1120
1121 // ------------------------------------------------------------------
1122 // ciEnv::num_inlined_bytecodes()
1123 int ciEnv::num_inlined_bytecodes() const {
1124 return _num_inlined_bytecodes;
1125 }
1126
1127 // ------------------------------------------------------------------
1128 // ciEnv::record_failure()
1129 void ciEnv::record_failure(const char* reason) {
1130 if (_failure_reason == NULL) {
1131 // Record the first failure reason.
1132 _failure_reason = reason;
1133 }
1134 }
1135
1136 // ------------------------------------------------------------------
1137 // ciEnv::record_method_not_compilable()
1138 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1139 int new_compilable =
1140 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1141
1142 // Only note transitions to a worse state
1143 if (new_compilable > _compilable) {
1144 if (log() != NULL) {
1145 if (all_tiers) {
1146 log()->elem("method_not_compilable");
1147 } else {
1148 log()->elem("method_not_compilable_at_tier level='%d'",
1149 current()->task()->comp_level());
1150 }
1151 }
1152 _compilable = new_compilable;
1153
1154 // Reset failure reason; this one is more important.
1155 _failure_reason = NULL;
1156 record_failure(reason);
1157 }
1158 }
1159
1160 // ------------------------------------------------------------------
1161 // ciEnv::record_out_of_memory_failure()
1162 void ciEnv::record_out_of_memory_failure() {
1163 // If memory is low, we stop compiling methods.
1164 record_method_not_compilable("out of memory");
1165 }
1166
1167 ciInstance* ciEnv::unloaded_ciinstance() {
1168 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1169 }
1170
1171 // ------------------------------------------------------------------
1172 // ciEnv::dump_replay_data*
1173
1174 // Don't change thread state and acquire any locks.
1175 // Safe to call from VM error reporter.
1176
1177 void ciEnv::dump_compile_data(outputStream* out) {
1178 CompileTask* task = this->task();
1179 Method* method = task->method();
1180 int entry_bci = task->osr_bci();
1181 int comp_level = task->comp_level();
1182 out->print("compile %s %s %s %d %d",
1183 method->klass_name()->as_quoted_ascii(),
1184 method->name()->as_quoted_ascii(),
1185 method->signature()->as_quoted_ascii(),
1186 entry_bci, comp_level);
1187 if (compiler_data() != NULL) {
1188 if (is_c2_compile(comp_level)) { // C2 or Shark
1189 #ifdef COMPILER2
1190 // Dump C2 inlining data.
1191 ((Compile*)compiler_data())->dump_inline_data(out);
1192 #endif
1193 } else if (is_c1_compile(comp_level)) { // C1
1194 #ifdef COMPILER1
1195 // Dump C1 inlining data.
1196 ((Compilation*)compiler_data())->dump_inline_data(out);
1197 #endif
1198 }
1199 }
1200 out->cr();
1201 }
1202
1203 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1204 ResourceMark rm;
1205 #if INCLUDE_JVMTI
1206 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1207 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1208 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1209 #endif // INCLUDE_JVMTI
1210
1211 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1212 out->print_cr("# %d ciObject found", objects->length());
1213 for (int i = 0; i < objects->length(); i++) {
1214 objects->at(i)->dump_replay_data(out);
1215 }
1216 dump_compile_data(out);
1217 out->flush();
1218 }
1219
1220 void ciEnv::dump_replay_data(outputStream* out) {
1221 GUARDED_VM_ENTRY(
1222 MutexLocker ml(Compile_lock);
1223 dump_replay_data_unsafe(out);
1224 )
1225 }
1226
1227 void ciEnv::dump_replay_data(int compile_id) {
1228 static char buffer[O_BUFLEN];
1229 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1230 if (ret > 0) {
1231 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1232 if (fd != -1) {
1233 FILE* replay_data_file = os::open(fd, "w");
1234 if (replay_data_file != NULL) {
1235 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1236 dump_replay_data(&replay_data_stream);
1237 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1238 } else {
1239 tty->print_cr("# Can't open file to dump replay data.");
1240 }
1241 }
1242 }
1243 }
1244
1245 void ciEnv::dump_inline_data(int compile_id) {
1246 static char buffer[O_BUFLEN];
1247 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1248 if (ret > 0) {
1249 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1250 if (fd != -1) {
1251 FILE* inline_data_file = os::open(fd, "w");
1252 if (inline_data_file != NULL) {
1253 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1254 GUARDED_VM_ENTRY(
1255 MutexLocker ml(Compile_lock);
1256 dump_compile_data(&replay_data_stream);
1257 )
1258 replay_data_stream.flush();
1259 tty->print("# Compiler inline data is saved as: ");
1260 tty->print_cr("%s", buffer);
1261 } else {
1262 tty->print_cr("# Can't open file to dump inline data.");
1263 }
1264 }
1265 }
1266 }