1 /*
2 * Copyright (c) 1999, 2019, 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 "jvm.h"
27 #include "ci/ciConstant.hpp"
28 #include "ci/ciEnv.hpp"
29 #include "ci/ciField.hpp"
30 #include "ci/ciInstance.hpp"
31 #include "ci/ciInstanceKlass.hpp"
32 #include "ci/ciMethod.hpp"
33 #include "ci/ciNullObject.hpp"
34 #include "ci/ciReplay.hpp"
35 #include "ci/ciUtilities.inline.hpp"
36 #include "classfile/systemDictionary.hpp"
37 #include "classfile/vmSymbols.hpp"
38 #include "code/codeCache.hpp"
39 #include "code/scopeDesc.hpp"
40 #include "compiler/compileBroker.hpp"
41 #include "compiler/compileLog.hpp"
42 #include "compiler/disassembler.hpp"
43 #include "gc/shared/collectedHeap.inline.hpp"
44 #include "interpreter/linkResolver.hpp"
45 #include "jfr/jfrEvents.hpp"
46 #include "memory/allocation.inline.hpp"
47 #include "memory/oopFactory.hpp"
48 #include "memory/resourceArea.hpp"
49 #include "memory/universe.hpp"
50 #include "oops/constantPool.inline.hpp"
51 #include "oops/cpCache.inline.hpp"
52 #include "oops/method.inline.hpp"
53 #include "oops/methodData.hpp"
54 #include "oops/objArrayKlass.hpp"
55 #include "oops/objArrayOop.inline.hpp"
56 #include "oops/oop.inline.hpp"
57 #include "prims/jvmtiExport.hpp"
58 #include "runtime/handles.inline.hpp"
59 #include "runtime/init.hpp"
60 #include "runtime/reflection.hpp"
61 #include "runtime/jniHandles.inline.hpp"
62 #include "runtime/safepointVerifiers.hpp"
63 #include "runtime/sharedRuntime.hpp"
64 #include "runtime/thread.inline.hpp"
65 #include "utilities/dtrace.hpp"
66 #include "utilities/macros.hpp"
67 #ifdef COMPILER1
68 #include "c1/c1_Runtime1.hpp"
69 #endif
70 #ifdef COMPILER2
71 #include "opto/runtime.hpp"
72 #endif
73
74 // ciEnv
75 //
76 // This class is the top level broker for requests from the compiler
77 // to the VM.
78
79 ciObject* ciEnv::_null_object_instance;
80
81 #define WK_KLASS_DEFN(name, ignore_s) ciInstanceKlass* ciEnv::_##name = NULL;
82 WK_KLASSES_DO(WK_KLASS_DEFN)
83 #undef WK_KLASS_DEFN
84
85 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
86 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
87 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
88
89 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
90 jobject ciEnv::_ArrayStoreException_handle = NULL;
91 jobject ciEnv::_ClassCastException_handle = NULL;
92
93 #ifndef PRODUCT
94 static bool firstEnv = true;
95 #endif /* PRODUCT */
96
97 // ------------------------------------------------------------------
98 // ciEnv::ciEnv
99 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter)
100 : _ciEnv_arena(mtCompiler) {
101 VM_ENTRY_MARK;
102
103 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
104 thread->set_env(this);
105 assert(ciEnv::current() == this, "sanity");
106
107 _oop_recorder = NULL;
108 _debug_info = NULL;
109 _dependencies = NULL;
110 _failure_reason = NULL;
111 _inc_decompile_count_on_failure = true;
112 _compilable = MethodCompilable;
113 _break_at_compile = false;
114 _compiler_data = NULL;
115 #ifndef PRODUCT
116 assert(!firstEnv, "not initialized properly");
117 #endif /* !PRODUCT */
118
119 _system_dictionary_modification_counter = system_dictionary_modification_counter;
120 _num_inlined_bytecodes = 0;
121 assert(task == NULL || thread->task() == task, "sanity");
122 _task = task;
123 _log = NULL;
124
125 // Temporary buffer for creating symbols and such.
126 _name_buffer = NULL;
127 _name_buffer_len = 0;
128
129 _arena = &_ciEnv_arena;
130 _factory = new (_arena) ciObjectFactory(_arena, 128);
131
132 // Preload commonly referenced system ciObjects.
133
134 // During VM initialization, these instances have not yet been created.
135 // Assertions ensure that these instances are not accessed before
136 // their initialization.
137
138 assert(Universe::is_fully_initialized(), "should be complete");
139
140 oop o = Universe::null_ptr_exception_instance();
141 assert(o != NULL, "should have been initialized");
142 _NullPointerException_instance = get_object(o)->as_instance();
143 o = Universe::arithmetic_exception_instance();
144 assert(o != NULL, "should have been initialized");
145 _ArithmeticException_instance = get_object(o)->as_instance();
146
147 _ArrayIndexOutOfBoundsException_instance = NULL;
148 _ArrayStoreException_instance = NULL;
149 _ClassCastException_instance = NULL;
150 _the_null_string = NULL;
151 _the_min_jint_string = NULL;
152
153 _jvmti_can_hotswap_or_post_breakpoint = false;
154 _jvmti_can_access_local_variables = false;
155 _jvmti_can_post_on_exceptions = false;
156 _jvmti_can_pop_frame = false;
157 }
158
159 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
160 ASSERT_IN_VM;
161
162 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
163 CompilerThread* current_thread = CompilerThread::current();
164 assert(current_thread->env() == NULL, "must be");
165 current_thread->set_env(this);
166 assert(ciEnv::current() == this, "sanity");
167
168 _oop_recorder = NULL;
169 _debug_info = NULL;
170 _dependencies = NULL;
171 _failure_reason = NULL;
172 _inc_decompile_count_on_failure = true;
173 _compilable = MethodCompilable_never;
174 _break_at_compile = false;
175 _compiler_data = NULL;
176 #ifndef PRODUCT
177 assert(firstEnv, "must be first");
178 firstEnv = false;
179 #endif /* !PRODUCT */
180
181 _system_dictionary_modification_counter = 0;
182 _num_inlined_bytecodes = 0;
183 _task = NULL;
184 _log = NULL;
185
186 // Temporary buffer for creating symbols and such.
187 _name_buffer = NULL;
188 _name_buffer_len = 0;
189
190 _arena = arena;
191 _factory = new (_arena) ciObjectFactory(_arena, 128);
192
193 // Preload commonly referenced system ciObjects.
194
195 // During VM initialization, these instances have not yet been created.
196 // Assertions ensure that these instances are not accessed before
197 // their initialization.
198
199 assert(Universe::is_fully_initialized(), "must be");
200
201 _NullPointerException_instance = NULL;
202 _ArithmeticException_instance = NULL;
203 _ArrayIndexOutOfBoundsException_instance = NULL;
204 _ArrayStoreException_instance = NULL;
205 _ClassCastException_instance = NULL;
206 _the_null_string = NULL;
207 _the_min_jint_string = NULL;
208
209 _jvmti_can_hotswap_or_post_breakpoint = false;
210 _jvmti_can_access_local_variables = false;
211 _jvmti_can_post_on_exceptions = false;
212 _jvmti_can_pop_frame = false;
213 }
214
215 ciEnv::~ciEnv() {
216 GUARDED_VM_ENTRY(
217 CompilerThread* current_thread = CompilerThread::current();
218 _factory->remove_symbols();
219 // Need safepoint to clear the env on the thread. RedefineClasses might
220 // be reading it.
221 current_thread->set_env(NULL);
222 )
223 }
224
225 // ------------------------------------------------------------------
226 // Cache Jvmti state
227 void ciEnv::cache_jvmti_state() {
228 VM_ENTRY_MARK;
229 // Get Jvmti capabilities under lock to get consistant values.
230 MutexLocker mu(JvmtiThreadState_lock);
231 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
232 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
233 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
234 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
235 }
236
237 bool ciEnv::jvmti_state_changed() const {
238 if (!_jvmti_can_access_local_variables &&
239 JvmtiExport::can_access_local_variables()) {
240 return true;
241 }
242 if (!_jvmti_can_hotswap_or_post_breakpoint &&
243 JvmtiExport::can_hotswap_or_post_breakpoint()) {
244 return true;
245 }
246 if (!_jvmti_can_post_on_exceptions &&
247 JvmtiExport::can_post_on_exceptions()) {
248 return true;
249 }
250 if (!_jvmti_can_pop_frame &&
251 JvmtiExport::can_pop_frame()) {
252 return true;
253 }
254 return false;
255 }
256
257 // ------------------------------------------------------------------
258 // Cache DTrace flags
259 void ciEnv::cache_dtrace_flags() {
260 // Need lock?
261 _dtrace_extended_probes = ExtendedDTraceProbes;
262 if (_dtrace_extended_probes) {
263 _dtrace_monitor_probes = true;
264 _dtrace_method_probes = true;
265 _dtrace_alloc_probes = true;
266 } else {
267 _dtrace_monitor_probes = DTraceMonitorProbes;
268 _dtrace_method_probes = DTraceMethodProbes;
269 _dtrace_alloc_probes = DTraceAllocProbes;
270 }
271 }
272
273 // ------------------------------------------------------------------
274 // helper for lazy exception creation
275 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
276 VM_ENTRY_MARK;
277 if (handle == NULL) {
278 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
279 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
280 jobject objh = NULL;
281 if (!HAS_PENDING_EXCEPTION && k != NULL) {
282 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
283 if (!HAS_PENDING_EXCEPTION)
284 objh = JNIHandles::make_global(Handle(THREAD, obj));
285 }
286 if (HAS_PENDING_EXCEPTION) {
287 CLEAR_PENDING_EXCEPTION;
288 } else {
289 handle = objh;
290 }
291 }
292 oop obj = JNIHandles::resolve(handle);
293 return obj == NULL? NULL: get_object(obj)->as_instance();
294 }
295
296 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
297 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
298 _ArrayIndexOutOfBoundsException_instance
299 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
300 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
301 }
302 return _ArrayIndexOutOfBoundsException_instance;
303 }
304 ciInstance* ciEnv::ArrayStoreException_instance() {
305 if (_ArrayStoreException_instance == NULL) {
306 _ArrayStoreException_instance
307 = get_or_create_exception(_ArrayStoreException_handle,
308 vmSymbols::java_lang_ArrayStoreException());
309 }
310 return _ArrayStoreException_instance;
311 }
312 ciInstance* ciEnv::ClassCastException_instance() {
313 if (_ClassCastException_instance == NULL) {
314 _ClassCastException_instance
315 = get_or_create_exception(_ClassCastException_handle,
316 vmSymbols::java_lang_ClassCastException());
317 }
318 return _ClassCastException_instance;
319 }
320
321 ciInstance* ciEnv::the_null_string() {
322 if (_the_null_string == NULL) {
323 VM_ENTRY_MARK;
324 _the_null_string = get_object(Universe::the_null_string())->as_instance();
325 }
326 return _the_null_string;
327 }
328
329 ciInstance* ciEnv::the_min_jint_string() {
330 if (_the_min_jint_string == NULL) {
331 VM_ENTRY_MARK;
332 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
333 }
334 return _the_min_jint_string;
335 }
336
337 // ------------------------------------------------------------------
338 // ciEnv::get_method_from_handle
339 ciMethod* ciEnv::get_method_from_handle(Method* method) {
340 VM_ENTRY_MARK;
341 return get_metadata(method)->as_method();
342 }
343
344 // ------------------------------------------------------------------
345 // ciEnv::array_element_offset_in_bytes
346 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
347 VM_ENTRY_MARK;
348 objArrayOop a = (objArrayOop)a_h->get_oop();
349 assert(a->is_objArray(), "");
350 int length = a->length();
351 oop o = o_h->get_oop();
352 for (int i = 0; i < length; i++) {
353 if (a->obj_at(i) == o) return i;
354 }
355 return -1;
356 }
357
358
359 // ------------------------------------------------------------------
360 // ciEnv::check_klass_accessiblity
361 //
362 // Note: the logic of this method should mirror the logic of
363 // ConstantPool::verify_constant_pool_resolve.
364 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
365 Klass* resolved_klass) {
366 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
367 return true;
368 }
369 if (accessing_klass->is_obj_array_klass()) {
370 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
371 }
372 if (!accessing_klass->is_instance_klass()) {
373 return true;
374 }
375
376 if (resolved_klass->is_objArray_klass()) {
377 // Find the element klass, if this is an array.
378 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
379 }
380 if (resolved_klass->is_instance_klass()) {
381 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
382 InstanceKlass::cast(resolved_klass),
383 true) == Reflection::ACCESS_OK);
384 }
385 return true;
386 }
387
388 // ------------------------------------------------------------------
389 // ciEnv::get_klass_by_name_impl
390 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
391 const constantPoolHandle& cpool,
392 ciSymbol* name,
393 bool require_local) {
394 ASSERT_IN_VM;
395 EXCEPTION_CONTEXT;
396
397 // Now we need to check the SystemDictionary
398 Symbol* sym = name->get_symbol();
399 if (sym->char_at(0) == 'L' &&
400 sym->char_at(sym->utf8_length()-1) == ';') {
401 // This is a name from a signature. Strip off the trimmings.
402 // Call recursive to keep scope of strippedsym.
403 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
404 sym->utf8_length()-2,
405 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
406 ciSymbol* strippedname = get_symbol(strippedsym);
407 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
408 }
409
410 // Check for prior unloaded klass. The SystemDictionary's answers
411 // can vary over time but the compiler needs consistency.
412 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
413 if (unloaded_klass != NULL) {
414 if (require_local) return NULL;
415 return unloaded_klass;
416 }
417
418 Handle loader(THREAD, (oop)NULL);
419 Handle domain(THREAD, (oop)NULL);
420 if (accessing_klass != NULL) {
421 loader = Handle(THREAD, accessing_klass->loader());
422 domain = Handle(THREAD, accessing_klass->protection_domain());
423 }
424
425 // setup up the proper type to return on OOM
426 ciKlass* fail_type;
427 if (sym->char_at(0) == '[') {
428 fail_type = _unloaded_ciobjarrayklass;
429 } else {
430 fail_type = _unloaded_ciinstance_klass;
431 }
432 Klass* found_klass;
433 {
434 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
435 MutexLocker ml(Compile_lock);
436 Klass* kls;
437 if (!require_local) {
438 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
439 KILL_COMPILE_ON_FATAL_(fail_type));
440 } else {
441 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
442 KILL_COMPILE_ON_FATAL_(fail_type));
443 }
444 found_klass = kls;
445 }
446
447 // If we fail to find an array klass, look again for its element type.
448 // The element type may be available either locally or via constraints.
449 // In either case, if we can find the element type in the system dictionary,
450 // we must build an array type around it. The CI requires array klasses
451 // to be loaded if their element klasses are loaded, except when memory
452 // is exhausted.
453 if (sym->char_at(0) == '[' &&
454 (sym->char_at(1) == '[' || sym->char_at(1) == 'L')) {
455 // We have an unloaded array.
456 // Build it on the fly if the element class exists.
457 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
458 sym->utf8_length()-1,
459 KILL_COMPILE_ON_FATAL_(fail_type));
460
461 // Get element ciKlass recursively.
462 ciKlass* elem_klass =
463 get_klass_by_name_impl(accessing_klass,
464 cpool,
465 get_symbol(elem_sym),
466 require_local);
467 if (elem_klass != NULL && elem_klass->is_loaded()) {
468 // Now make an array for it
469 return ciObjArrayKlass::make_impl(elem_klass);
470 }
471 }
472
473 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
474 // Look inside the constant pool for pre-resolved class entries.
475 for (int i = cpool->length() - 1; i >= 1; i--) {
476 if (cpool->tag_at(i).is_klass()) {
477 Klass* kls = cpool->resolved_klass_at(i);
478 if (kls->name() == sym) {
479 found_klass = kls;
480 break;
481 }
482 }
483 }
484 }
485
486 if (found_klass != NULL) {
487 // Found it. Build a CI handle.
488 return get_klass(found_klass);
489 }
490
491 if (require_local) return NULL;
492
493 // Not yet loaded into the VM, or not governed by loader constraints.
494 // Make a CI representative for it.
495 return get_unloaded_klass(accessing_klass, name);
496 }
497
498 // ------------------------------------------------------------------
499 // ciEnv::get_klass_by_name
500 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
501 ciSymbol* klass_name,
502 bool require_local) {
503 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
504 constantPoolHandle(),
505 klass_name,
506 require_local);)
507 }
508
509 // ------------------------------------------------------------------
510 // ciEnv::get_klass_by_index_impl
511 //
512 // Implementation of get_klass_by_index.
513 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
514 int index,
515 bool& is_accessible,
516 ciInstanceKlass* accessor) {
517 EXCEPTION_CONTEXT;
518 Klass* klass = NULL;
519 Symbol* klass_name = NULL;
520
521 if (cpool->tag_at(index).is_symbol()) {
522 klass_name = cpool->symbol_at(index);
523 } else {
524 // Check if it's resolved if it's not a symbol constant pool entry.
525 klass = ConstantPool::klass_at_if_loaded(cpool, index);
526 // Try to look it up by name.
527 if (klass == NULL) {
528 klass_name = cpool->klass_name_at(index);
529 }
530 }
531
532 if (klass == NULL) {
533 // Not found in constant pool. Use the name to do the lookup.
534 ciKlass* k = get_klass_by_name_impl(accessor,
535 cpool,
536 get_symbol(klass_name),
537 false);
538 // Calculate accessibility the hard way.
539 if (!k->is_loaded()) {
540 is_accessible = false;
541 } else if (!oopDesc::equals(k->loader(), accessor->loader()) &&
542 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
543 // Loaded only remotely. Not linked yet.
544 is_accessible = false;
545 } else {
546 // Linked locally, and we must also check public/private, etc.
547 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
548 }
549 return k;
550 }
551
552 // Check for prior unloaded klass. The SystemDictionary's answers
553 // can vary over time but the compiler needs consistency.
554 ciSymbol* name = get_symbol(klass->name());
555 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
556 if (unloaded_klass != NULL) {
557 is_accessible = false;
558 return unloaded_klass;
559 }
560
561 // It is known to be accessible, since it was found in the constant pool.
562 is_accessible = true;
563 return get_klass(klass);
564 }
565
566 // ------------------------------------------------------------------
567 // ciEnv::get_klass_by_index
568 //
569 // Get a klass from the constant pool.
570 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
571 int index,
572 bool& is_accessible,
573 ciInstanceKlass* accessor) {
574 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
575 }
576
577 // ------------------------------------------------------------------
578 // ciEnv::get_constant_by_index_impl
579 //
580 // Implementation of get_constant_by_index().
581 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
582 int pool_index, int cache_index,
583 ciInstanceKlass* accessor) {
584 bool ignore_will_link;
585 EXCEPTION_CONTEXT;
586 int index = pool_index;
587 if (cache_index >= 0) {
588 assert(index < 0, "only one kind of index at a time");
589 index = cpool->object_to_cp_index(cache_index);
590 oop obj = cpool->resolved_references()->obj_at(cache_index);
591 if (obj != NULL) {
592 if (oopDesc::equals(obj, Universe::the_null_sentinel())) {
593 return ciConstant(T_OBJECT, get_object(NULL));
594 }
595 BasicType bt = T_OBJECT;
596 if (cpool->tag_at(index).is_dynamic_constant())
597 bt = FieldType::basic_type(cpool->uncached_signature_ref_at(index));
598 if (is_reference_type(bt)) {
599 } else {
600 // we have to unbox the primitive value
601 if (!is_java_primitive(bt)) return ciConstant();
602 jvalue value;
603 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
604 assert(bt2 == bt, "");
605 switch (bt2) {
606 case T_DOUBLE: return ciConstant(value.d);
607 case T_FLOAT: return ciConstant(value.f);
608 case T_LONG: return ciConstant(value.j);
609 case T_INT: return ciConstant(bt2, value.i);
610 case T_SHORT: return ciConstant(bt2, value.s);
611 case T_BYTE: return ciConstant(bt2, value.b);
612 case T_CHAR: return ciConstant(bt2, value.c);
613 case T_BOOLEAN: return ciConstant(bt2, value.z);
614 default: return ciConstant();
615 }
616 }
617 ciObject* ciobj = get_object(obj);
618 if (ciobj->is_array()) {
619 return ciConstant(T_ARRAY, ciobj);
620 } else {
621 assert(ciobj->is_instance(), "should be an instance");
622 return ciConstant(T_OBJECT, ciobj);
623 }
624 }
625 }
626 constantTag tag = cpool->tag_at(index);
627 if (tag.is_int()) {
628 return ciConstant(T_INT, (jint)cpool->int_at(index));
629 } else if (tag.is_long()) {
630 return ciConstant((jlong)cpool->long_at(index));
631 } else if (tag.is_float()) {
632 return ciConstant((jfloat)cpool->float_at(index));
633 } else if (tag.is_double()) {
634 return ciConstant((jdouble)cpool->double_at(index));
635 } else if (tag.is_string()) {
636 oop string = NULL;
637 assert(cache_index >= 0, "should have a cache index");
638 if (cpool->is_pseudo_string_at(index)) {
639 string = cpool->pseudo_string_at(index, cache_index);
640 } else {
641 string = cpool->string_at(index, cache_index, THREAD);
642 if (HAS_PENDING_EXCEPTION) {
643 CLEAR_PENDING_EXCEPTION;
644 record_out_of_memory_failure();
645 return ciConstant();
646 }
647 }
648 ciObject* constant = get_object(string);
649 if (constant->is_array()) {
650 return ciConstant(T_ARRAY, constant);
651 } else {
652 assert (constant->is_instance(), "must be an instance, or not? ");
653 return ciConstant(T_OBJECT, constant);
654 }
655 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
656 // 4881222: allow ldc to take a class type
657 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
658 if (HAS_PENDING_EXCEPTION) {
659 CLEAR_PENDING_EXCEPTION;
660 record_out_of_memory_failure();
661 return ciConstant();
662 }
663 assert (klass->is_instance_klass() || klass->is_array_klass(),
664 "must be an instance or array klass ");
665 return ciConstant(T_OBJECT, klass->java_mirror());
666 } else if (tag.is_method_type()) {
667 // must execute Java code to link this CP entry into cache[i].f1
668 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
669 ciObject* ciobj = get_unloaded_method_type_constant(signature);
670 return ciConstant(T_OBJECT, ciobj);
671 } else if (tag.is_method_handle()) {
672 // must execute Java code to link this CP entry into cache[i].f1
673 int ref_kind = cpool->method_handle_ref_kind_at(index);
674 int callee_index = cpool->method_handle_klass_index_at(index);
675 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
676 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
677 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
678 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
679 return ciConstant(T_OBJECT, ciobj);
680 } else if (tag.is_dynamic_constant()) {
681 return ciConstant();
682 } else {
683 ShouldNotReachHere();
684 return ciConstant();
685 }
686 }
687
688 // ------------------------------------------------------------------
689 // ciEnv::get_constant_by_index
690 //
691 // Pull a constant out of the constant pool. How appropriate.
692 //
693 // Implementation note: this query is currently in no way cached.
694 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
695 int pool_index, int cache_index,
696 ciInstanceKlass* accessor) {
697 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
698 }
699
700 // ------------------------------------------------------------------
701 // ciEnv::get_field_by_index_impl
702 //
703 // Implementation of get_field_by_index.
704 //
705 // Implementation note: the results of field lookups are cached
706 // in the accessor klass.
707 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
708 int index) {
709 ciConstantPoolCache* cache = accessor->field_cache();
710 if (cache == NULL) {
711 ciField* field = new (arena()) ciField(accessor, index);
712 return field;
713 } else {
714 ciField* field = (ciField*)cache->get(index);
715 if (field == NULL) {
716 field = new (arena()) ciField(accessor, index);
717 cache->insert(index, field);
718 }
719 return field;
720 }
721 }
722
723 // ------------------------------------------------------------------
724 // ciEnv::get_field_by_index
725 //
726 // Get a field by index from a klass's constant pool.
727 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
728 int index) {
729 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
730 }
731
732 // ------------------------------------------------------------------
733 // ciEnv::lookup_method
734 //
735 // Perform an appropriate method lookup based on accessor, holder,
736 // name, signature, and bytecode.
737 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
738 ciKlass* holder,
739 Symbol* name,
740 Symbol* sig,
741 Bytecodes::Code bc,
742 constantTag tag) {
743 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
744 assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible");
745
746 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
747 Klass* holder_klass = holder->get_Klass();
748 methodHandle dest_method;
749 LinkInfo link_info(holder_klass, name, sig, accessor_klass, LinkInfo::needs_access_check, tag);
750 switch (bc) {
751 case Bytecodes::_invokestatic:
752 dest_method =
753 LinkResolver::resolve_static_call_or_null(link_info);
754 break;
755 case Bytecodes::_invokespecial:
756 dest_method =
757 LinkResolver::resolve_special_call_or_null(link_info);
758 break;
759 case Bytecodes::_invokeinterface:
760 dest_method =
761 LinkResolver::linktime_resolve_interface_method_or_null(link_info);
762 break;
763 case Bytecodes::_invokevirtual:
764 dest_method =
765 LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
766 break;
767 default: ShouldNotReachHere();
768 }
769
770 return dest_method();
771 }
772
773
774 // ------------------------------------------------------------------
775 // ciEnv::get_method_by_index_impl
776 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
777 int index, Bytecodes::Code bc,
778 ciInstanceKlass* accessor) {
779 if (bc == Bytecodes::_invokedynamic) {
780 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
781 bool is_resolved = !cpce->is_f1_null();
782 // FIXME: code generation could allow for null (unlinked) call site
783 // The call site could be made patchable as follows:
784 // Load the appendix argument from the constant pool.
785 // Test the appendix argument and jump to a known deopt routine if it is null.
786 // Jump through a patchable call site, which is initially a deopt routine.
787 // Patch the call site to the nmethod entry point of the static compiled lambda form.
788 // As with other two-component call sites, both values must be independently verified.
789
790 if (is_resolved) {
791 // Get the invoker Method* from the constant pool.
792 // (The appendix argument, if any, will be noted in the method's signature.)
793 Method* adapter = cpce->f1_as_method();
794 return get_method(adapter);
795 }
796
797 // Fake a method that is equivalent to a declared method.
798 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
799 ciSymbol* name = ciSymbol::invokeBasic_name();
800 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
801 return get_unloaded_method(holder, name, signature, accessor);
802 } else {
803 const int holder_index = cpool->klass_ref_index_at(index);
804 bool holder_is_accessible;
805 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
806
807 // Get the method's name and signature.
808 Symbol* name_sym = cpool->name_ref_at(index);
809 Symbol* sig_sym = cpool->signature_ref_at(index);
810
811 if (cpool->has_preresolution()
812 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
813 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
814 // Short-circuit lookups for JSR 292-related call sites.
815 // That is, do not rely only on name-based lookups, because they may fail
816 // if the names are not resolvable in the boot class loader (7056328).
817 switch (bc) {
818 case Bytecodes::_invokevirtual:
819 case Bytecodes::_invokeinterface:
820 case Bytecodes::_invokespecial:
821 case Bytecodes::_invokestatic:
822 {
823 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
824 if (m != NULL) {
825 return get_method(m);
826 }
827 }
828 break;
829 default:
830 break;
831 }
832 }
833
834 if (holder_is_accessible) { // Our declared holder is loaded.
835 constantTag tag = cpool->tag_ref_at(index);
836 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
837 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
838 if (m != NULL &&
839 (bc == Bytecodes::_invokestatic
840 ? m->method_holder()->is_not_initialized()
841 : !m->method_holder()->is_loaded())) {
842 m = NULL;
843 }
844 #ifdef ASSERT
845 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
846 m = NULL;
847 }
848 #endif
849 if (m != NULL) {
850 // We found the method.
851 return get_method(m);
852 }
853 }
854
855 // Either the declared holder was not loaded, or the method could
856 // not be found. Create a dummy ciMethod to represent the failed
857 // lookup.
858 ciSymbol* name = get_symbol(name_sym);
859 ciSymbol* signature = get_symbol(sig_sym);
860 return get_unloaded_method(holder, name, signature, accessor);
861 }
862 }
863
864
865 // ------------------------------------------------------------------
866 // ciEnv::get_instance_klass_for_declared_method_holder
867 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
868 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
869 // instead of a ciInstanceKlass. For that case simply pretend that the
870 // declared holder is Object.clone since that's where the call will bottom out.
871 // A more correct fix would trickle out through many interfaces in CI,
872 // requiring ciInstanceKlass* to become ciKlass* and many more places would
873 // require checks to make sure the expected type was found. Given that this
874 // only occurs for clone() the more extensive fix seems like overkill so
875 // instead we simply smear the array type into Object.
876 guarantee(method_holder != NULL, "no method holder");
877 if (method_holder->is_instance_klass()) {
878 return method_holder->as_instance_klass();
879 } else if (method_holder->is_array_klass()) {
880 return current()->Object_klass();
881 } else {
882 ShouldNotReachHere();
883 }
884 return NULL;
885 }
886
887
888 // ------------------------------------------------------------------
889 // ciEnv::get_method_by_index
890 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
891 int index, Bytecodes::Code bc,
892 ciInstanceKlass* accessor) {
893 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
894 }
895
896
897 // ------------------------------------------------------------------
898 // ciEnv::name_buffer
899 char *ciEnv::name_buffer(int req_len) {
900 if (_name_buffer_len < req_len) {
901 if (_name_buffer == NULL) {
902 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
903 _name_buffer_len = req_len;
904 } else {
905 _name_buffer =
906 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
907 _name_buffer_len = req_len;
908 }
909 }
910 return _name_buffer;
911 }
912
913 // ------------------------------------------------------------------
914 // ciEnv::is_in_vm
915 bool ciEnv::is_in_vm() {
916 return JavaThread::current()->thread_state() == _thread_in_vm;
917 }
918
919 bool ciEnv::system_dictionary_modification_counter_changed_locked() {
920 assert_locked_or_safepoint(Compile_lock);
921 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
922 }
923
924 bool ciEnv::system_dictionary_modification_counter_changed() {
925 VM_ENTRY_MARK;
926 MutexLocker ml(Compile_lock, THREAD); // lock with safepoint check
927 return system_dictionary_modification_counter_changed_locked();
928 }
929
930 // ------------------------------------------------------------------
931 // ciEnv::validate_compile_task_dependencies
932 //
933 // Check for changes during compilation (e.g. class loads, evolution,
934 // breakpoints, call site invalidation).
935 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
936 if (failing()) return; // no need for further checks
937
938 bool counter_changed = system_dictionary_modification_counter_changed_locked();
939 Dependencies::DepType result = dependencies()->validate_dependencies(_task, counter_changed);
940 if (result != Dependencies::end_marker) {
941 if (result == Dependencies::call_site_target_value) {
942 _inc_decompile_count_on_failure = false;
943 record_failure("call site target change");
944 } else if (Dependencies::is_klass_type(result)) {
945 record_failure("concurrent class loading");
946 } else {
947 record_failure("invalid non-klass dependency");
948 }
949 }
950 }
951
952 // ------------------------------------------------------------------
953 // ciEnv::register_method
954 void ciEnv::register_method(ciMethod* target,
955 int entry_bci,
956 CodeOffsets* offsets,
957 int orig_pc_offset,
958 CodeBuffer* code_buffer,
959 int frame_words,
960 OopMapSet* oop_map_set,
961 ExceptionHandlerTable* handler_table,
962 ImplicitExceptionTable* inc_table,
963 AbstractCompiler* compiler,
964 bool has_unsafe_access,
965 bool has_wide_vectors,
966 RTMState rtm_state) {
967 VM_ENTRY_MARK;
968 nmethod* nm = NULL;
969 {
970 // To prevent compile queue updates.
971 MutexLocker locker(MethodCompileQueue_lock, THREAD);
972
973 // Prevent SystemDictionary::add_to_hierarchy from running
974 // and invalidating our dependencies until we install this method.
975 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
976 MutexLocker ml(Compile_lock);
977 NoSafepointVerifier nsv;
978
979 // Change in Jvmti state may invalidate compilation.
980 if (!failing() && jvmti_state_changed()) {
981 record_failure("Jvmti state change invalidated dependencies");
982 }
983
984 // Change in DTrace flags may invalidate compilation.
985 if (!failing() &&
986 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
987 (!dtrace_method_probes() && DTraceMethodProbes) ||
988 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
989 record_failure("DTrace flags change invalidated dependencies");
990 }
991
992 if (!failing()) {
993 if (log() != NULL) {
994 // Log the dependencies which this compilation declares.
995 dependencies()->log_all_dependencies();
996 }
997
998 // Encode the dependencies now, so we can check them right away.
999 dependencies()->encode_content_bytes();
1000
1001 // Check for {class loads, evolution, breakpoints, ...} during compilation
1002 validate_compile_task_dependencies(target);
1003 }
1004
1005 methodHandle method(THREAD, target->get_Method());
1006
1007 #if INCLUDE_RTM_OPT
1008 if (!failing() && (rtm_state != NoRTM) &&
1009 (method()->method_data() != NULL) &&
1010 (method()->method_data()->rtm_state() != rtm_state)) {
1011 // Preemptive decompile if rtm state was changed.
1012 record_failure("RTM state change invalidated rtm code");
1013 }
1014 #endif
1015
1016 if (failing()) {
1017 // While not a true deoptimization, it is a preemptive decompile.
1018 MethodData* mdo = method()->method_data();
1019 if (mdo != NULL && _inc_decompile_count_on_failure) {
1020 mdo->inc_decompile_count();
1021 }
1022
1023 // All buffers in the CodeBuffer are allocated in the CodeCache.
1024 // If the code buffer is created on each compile attempt
1025 // as in C2, then it must be freed.
1026 code_buffer->free_blob();
1027 return;
1028 }
1029
1030 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1031 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1032
1033 nm = nmethod::new_nmethod(method,
1034 compile_id(),
1035 entry_bci,
1036 offsets,
1037 orig_pc_offset,
1038 debug_info(), dependencies(), code_buffer,
1039 frame_words, oop_map_set,
1040 handler_table, inc_table,
1041 compiler, task()->comp_level());
1042
1043 // Free codeBlobs
1044 code_buffer->free_blob();
1045
1046 if (nm != NULL) {
1047 nm->set_has_unsafe_access(has_unsafe_access);
1048 nm->set_has_wide_vectors(has_wide_vectors);
1049 #if INCLUDE_RTM_OPT
1050 nm->set_rtm_state(rtm_state);
1051 #endif
1052
1053 // Record successful registration.
1054 // (Put nm into the task handle *before* publishing to the Java heap.)
1055 if (task() != NULL) {
1056 task()->set_code(nm);
1057 }
1058
1059 if (entry_bci == InvocationEntryBci) {
1060 if (TieredCompilation) {
1061 // If there is an old version we're done with it
1062 CompiledMethod* old = method->code();
1063 if (TraceMethodReplacement && old != NULL) {
1064 ResourceMark rm;
1065 char *method_name = method->name_and_sig_as_C_string();
1066 tty->print_cr("Replacing method %s", method_name);
1067 }
1068 if (old != NULL) {
1069 old->make_not_used();
1070 }
1071 }
1072 if (TraceNMethodInstalls) {
1073 ResourceMark rm;
1074 char *method_name = method->name_and_sig_as_C_string();
1075 ttyLocker ttyl;
1076 tty->print_cr("Installing method (%d) %s ",
1077 task()->comp_level(),
1078 method_name);
1079 }
1080 // Allow the code to be executed
1081 method->set_code(method, nm);
1082 } else {
1083 if (TraceNMethodInstalls) {
1084 ResourceMark rm;
1085 char *method_name = method->name_and_sig_as_C_string();
1086 ttyLocker ttyl;
1087 tty->print_cr("Installing osr method (%d) %s @ %d",
1088 task()->comp_level(),
1089 method_name,
1090 entry_bci);
1091 }
1092 method->method_holder()->add_osr_nmethod(nm);
1093 }
1094 nm->make_in_use();
1095 }
1096 } // safepoints are allowed again
1097
1098 if (nm != NULL) {
1099 // JVMTI -- compiled method notification (must be done outside lock)
1100 nm->post_compiled_method_load_event();
1101 } else {
1102 // The CodeCache is full.
1103 record_failure("code cache is full");
1104 }
1105 }
1106
1107
1108 // ------------------------------------------------------------------
1109 // ciEnv::find_system_klass
1110 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1111 VM_ENTRY_MARK;
1112 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1113 }
1114
1115 // ------------------------------------------------------------------
1116 // ciEnv::comp_level
1117 int ciEnv::comp_level() {
1118 if (task() == NULL) return CompLevel_highest_tier;
1119 return task()->comp_level();
1120 }
1121
1122 // ------------------------------------------------------------------
1123 // ciEnv::compile_id
1124 uint ciEnv::compile_id() {
1125 if (task() == NULL) return 0;
1126 return task()->compile_id();
1127 }
1128
1129 // ------------------------------------------------------------------
1130 // ciEnv::notice_inlined_method()
1131 void ciEnv::notice_inlined_method(ciMethod* method) {
1132 _num_inlined_bytecodes += method->code_size_for_inlining();
1133 }
1134
1135 // ------------------------------------------------------------------
1136 // ciEnv::num_inlined_bytecodes()
1137 int ciEnv::num_inlined_bytecodes() const {
1138 return _num_inlined_bytecodes;
1139 }
1140
1141 // ------------------------------------------------------------------
1142 // ciEnv::record_failure()
1143 void ciEnv::record_failure(const char* reason) {
1144 if (_failure_reason == NULL) {
1145 // Record the first failure reason.
1146 _failure_reason = reason;
1147 }
1148 }
1149
1150 void ciEnv::report_failure(const char* reason) {
1151 EventCompilationFailure event;
1152 if (event.should_commit()) {
1153 event.set_compileId(compile_id());
1154 event.set_failureMessage(reason);
1155 event.commit();
1156 }
1157 }
1158
1159 // ------------------------------------------------------------------
1160 // ciEnv::record_method_not_compilable()
1161 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1162 int new_compilable =
1163 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1164
1165 // Only note transitions to a worse state
1166 if (new_compilable > _compilable) {
1167 if (log() != NULL) {
1168 if (all_tiers) {
1169 log()->elem("method_not_compilable");
1170 } else {
1171 log()->elem("method_not_compilable_at_tier level='%d'",
1172 current()->task()->comp_level());
1173 }
1174 }
1175 _compilable = new_compilable;
1176
1177 // Reset failure reason; this one is more important.
1178 _failure_reason = NULL;
1179 record_failure(reason);
1180 }
1181 }
1182
1183 // ------------------------------------------------------------------
1184 // ciEnv::record_out_of_memory_failure()
1185 void ciEnv::record_out_of_memory_failure() {
1186 // If memory is low, we stop compiling methods.
1187 record_method_not_compilable("out of memory");
1188 }
1189
1190 ciInstance* ciEnv::unloaded_ciinstance() {
1191 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1192 }
1193
1194 // ------------------------------------------------------------------
1195 // ciEnv::dump_replay_data*
1196
1197 // Don't change thread state and acquire any locks.
1198 // Safe to call from VM error reporter.
1199
1200 void ciEnv::dump_compile_data(outputStream* out) {
1201 CompileTask* task = this->task();
1202 if (task) {
1203 Method* method = task->method();
1204 int entry_bci = task->osr_bci();
1205 int comp_level = task->comp_level();
1206 out->print("compile %s %s %s %d %d",
1207 method->klass_name()->as_quoted_ascii(),
1208 method->name()->as_quoted_ascii(),
1209 method->signature()->as_quoted_ascii(),
1210 entry_bci, comp_level);
1211 if (compiler_data() != NULL) {
1212 if (is_c2_compile(comp_level)) {
1213 #ifdef COMPILER2
1214 // Dump C2 inlining data.
1215 ((Compile*)compiler_data())->dump_inline_data(out);
1216 #endif
1217 } else if (is_c1_compile(comp_level)) {
1218 #ifdef COMPILER1
1219 // Dump C1 inlining data.
1220 ((Compilation*)compiler_data())->dump_inline_data(out);
1221 #endif
1222 }
1223 }
1224 out->cr();
1225 }
1226 }
1227
1228 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1229 ResourceMark rm;
1230 #if INCLUDE_JVMTI
1231 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1232 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1233 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1234 #endif // INCLUDE_JVMTI
1235
1236 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1237 out->print_cr("# %d ciObject found", objects->length());
1238 for (int i = 0; i < objects->length(); i++) {
1239 objects->at(i)->dump_replay_data(out);
1240 }
1241 dump_compile_data(out);
1242 out->flush();
1243 }
1244
1245 void ciEnv::dump_replay_data(outputStream* out) {
1246 GUARDED_VM_ENTRY(
1247 MutexLocker ml(Compile_lock);
1248 dump_replay_data_unsafe(out);
1249 )
1250 }
1251
1252 void ciEnv::dump_replay_data(int compile_id) {
1253 static char buffer[O_BUFLEN];
1254 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1255 if (ret > 0) {
1256 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1257 if (fd != -1) {
1258 FILE* replay_data_file = os::open(fd, "w");
1259 if (replay_data_file != NULL) {
1260 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1261 dump_replay_data(&replay_data_stream);
1262 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1263 } else {
1264 tty->print_cr("# Can't open file to dump replay data.");
1265 }
1266 }
1267 }
1268 }
1269
1270 void ciEnv::dump_inline_data(int compile_id) {
1271 static char buffer[O_BUFLEN];
1272 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1273 if (ret > 0) {
1274 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1275 if (fd != -1) {
1276 FILE* inline_data_file = os::open(fd, "w");
1277 if (inline_data_file != NULL) {
1278 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1279 GUARDED_VM_ENTRY(
1280 MutexLocker ml(Compile_lock);
1281 dump_compile_data(&replay_data_stream);
1282 )
1283 replay_data_stream.flush();
1284 tty->print("# Compiler inline data is saved as: ");
1285 tty->print_cr("%s", buffer);
1286 } else {
1287 tty->print_cr("# Can't open file to dump inline data.");
1288 }
1289 }
1290 }
1291 }