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