1 /*
2 * Copyright (c) 1999, 2017, 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/disassembler.hpp"
42 #include "gc/shared/collectedHeap.inline.hpp"
43 #include "interpreter/linkResolver.hpp"
44 #include "memory/allocation.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "memory/resourceArea.hpp"
47 #include "memory/universe.inline.hpp"
48 #include "oops/methodData.hpp"
49 #include "oops/objArrayKlass.hpp"
50 #include "oops/objArrayOop.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "prims/jvmtiExport.hpp"
53 #include "runtime/init.hpp"
54 #include "runtime/reflection.hpp"
55 #include "runtime/sharedRuntime.hpp"
56 #include "runtime/thread.inline.hpp"
57 #include "trace/tracing.hpp"
58 #include "utilities/dtrace.hpp"
59 #include "utilities/macros.hpp"
60 #ifdef COMPILER1
61 #include "c1/c1_Runtime1.hpp"
62 #endif
63 #ifdef COMPILER2
64 #include "opto/runtime.hpp"
65 #endif
66
67 // ciEnv
68 //
69 // This class is the top level broker for requests from the compiler
70 // to the VM.
71
72 ciObject* ciEnv::_null_object_instance;
73
74 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
75 WK_KLASSES_DO(WK_KLASS_DEFN)
76 #undef WK_KLASS_DEFN
77
78 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
79 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
80 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
81
82 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
83 jobject ciEnv::_ArrayStoreException_handle = NULL;
84 jobject ciEnv::_ClassCastException_handle = NULL;
85
86 #ifndef PRODUCT
87 static bool firstEnv = true;
88 #endif /* PRODUCT */
89
90 // ------------------------------------------------------------------
91 // ciEnv::ciEnv
92 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter)
93 : _ciEnv_arena(mtCompiler) {
94 VM_ENTRY_MARK;
95
96 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
97 thread->set_env(this);
98 assert(ciEnv::current() == this, "sanity");
99
100 _oop_recorder = NULL;
101 _debug_info = NULL;
102 _dependencies = NULL;
103 _failure_reason = NULL;
104 _inc_decompile_count_on_failure = true;
105 _compilable = MethodCompilable;
106 _break_at_compile = false;
107 _compiler_data = NULL;
108 #ifndef PRODUCT
109 assert(!firstEnv, "not initialized properly");
110 #endif /* !PRODUCT */
111
112 _system_dictionary_modification_counter = system_dictionary_modification_counter;
113 _num_inlined_bytecodes = 0;
114 assert(task == NULL || thread->task() == task, "sanity");
115 _task = task;
116 _log = NULL;
117
118 // Temporary buffer for creating symbols and such.
119 _name_buffer = NULL;
120 _name_buffer_len = 0;
121
122 _arena = &_ciEnv_arena;
123 _factory = new (_arena) ciObjectFactory(_arena, 128);
124
125 // Preload commonly referenced system ciObjects.
126
127 // During VM initialization, these instances have not yet been created.
128 // Assertions ensure that these instances are not accessed before
129 // their initialization.
130
131 assert(Universe::is_fully_initialized(), "should be complete");
132
133 oop o = Universe::null_ptr_exception_instance();
134 assert(o != NULL, "should have been initialized");
135 _NullPointerException_instance = get_object(o)->as_instance();
136 o = Universe::arithmetic_exception_instance();
137 assert(o != NULL, "should have been initialized");
138 _ArithmeticException_instance = get_object(o)->as_instance();
139
140 _ArrayIndexOutOfBoundsException_instance = NULL;
141 _ArrayStoreException_instance = NULL;
142 _ClassCastException_instance = NULL;
143 _the_null_string = NULL;
144 _the_min_jint_string = NULL;
145
146 _jvmti_can_hotswap_or_post_breakpoint = false;
147 _jvmti_can_access_local_variables = false;
148 _jvmti_can_post_on_exceptions = false;
149 _jvmti_can_pop_frame = false;
150 }
151
152 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
153 ASSERT_IN_VM;
154
155 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
156 CompilerThread* current_thread = CompilerThread::current();
157 assert(current_thread->env() == NULL, "must be");
158 current_thread->set_env(this);
159 assert(ciEnv::current() == this, "sanity");
160
161 _oop_recorder = NULL;
162 _debug_info = NULL;
163 _dependencies = NULL;
164 _failure_reason = NULL;
165 _inc_decompile_count_on_failure = true;
166 _compilable = MethodCompilable_never;
167 _break_at_compile = false;
168 _compiler_data = NULL;
169 #ifndef PRODUCT
170 assert(firstEnv, "must be first");
171 firstEnv = false;
172 #endif /* !PRODUCT */
173
174 _system_dictionary_modification_counter = 0;
175 _num_inlined_bytecodes = 0;
176 _task = NULL;
177 _log = NULL;
178
179 // Temporary buffer for creating symbols and such.
180 _name_buffer = NULL;
181 _name_buffer_len = 0;
182
183 _arena = arena;
184 _factory = new (_arena) ciObjectFactory(_arena, 128);
185
186 // Preload commonly referenced system ciObjects.
187
188 // During VM initialization, these instances have not yet been created.
189 // Assertions ensure that these instances are not accessed before
190 // their initialization.
191
192 assert(Universe::is_fully_initialized(), "must be");
193
194 _NullPointerException_instance = NULL;
195 _ArithmeticException_instance = NULL;
196 _ArrayIndexOutOfBoundsException_instance = NULL;
197 _ArrayStoreException_instance = NULL;
198 _ClassCastException_instance = NULL;
199 _the_null_string = NULL;
200 _the_min_jint_string = NULL;
201
202 _jvmti_can_hotswap_or_post_breakpoint = false;
203 _jvmti_can_access_local_variables = false;
204 _jvmti_can_post_on_exceptions = false;
205 _jvmti_can_pop_frame = false;
206 }
207
208 ciEnv::~ciEnv() {
209 GUARDED_VM_ENTRY(
210 CompilerThread* current_thread = CompilerThread::current();
211 _factory->remove_symbols();
212 // Need safepoint to clear the env on the thread. RedefineClasses might
213 // be reading it.
214 current_thread->set_env(NULL);
215 )
216 }
217
218 // ------------------------------------------------------------------
219 // Cache Jvmti state
220 void ciEnv::cache_jvmti_state() {
221 VM_ENTRY_MARK;
222 // Get Jvmti capabilities under lock to get consistant values.
223 MutexLocker mu(JvmtiThreadState_lock);
224 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
225 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
226 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
227 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
228 }
229
230 bool ciEnv::should_retain_local_variables() const {
231 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame;
232 }
233
234 bool ciEnv::jvmti_state_changed() const {
235 if (!_jvmti_can_access_local_variables &&
236 JvmtiExport::can_access_local_variables()) {
237 return true;
238 }
239 if (!_jvmti_can_hotswap_or_post_breakpoint &&
240 JvmtiExport::can_hotswap_or_post_breakpoint()) {
241 return true;
242 }
243 if (!_jvmti_can_post_on_exceptions &&
244 JvmtiExport::can_post_on_exceptions()) {
245 return true;
246 }
247 if (!_jvmti_can_pop_frame &&
248 JvmtiExport::can_pop_frame()) {
249 return true;
250 }
251 return false;
252 }
253
254 // ------------------------------------------------------------------
255 // Cache DTrace flags
256 void ciEnv::cache_dtrace_flags() {
257 // Need lock?
258 _dtrace_extended_probes = ExtendedDTraceProbes;
259 if (_dtrace_extended_probes) {
260 _dtrace_monitor_probes = true;
261 _dtrace_method_probes = true;
262 _dtrace_alloc_probes = true;
263 } else {
264 _dtrace_monitor_probes = DTraceMonitorProbes;
265 _dtrace_method_probes = DTraceMethodProbes;
266 _dtrace_alloc_probes = DTraceAllocProbes;
267 }
268 }
269
270 // ------------------------------------------------------------------
271 // helper for lazy exception creation
272 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
273 VM_ENTRY_MARK;
274 if (handle == NULL) {
275 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
276 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
277 jobject objh = NULL;
278 if (!HAS_PENDING_EXCEPTION && k != NULL) {
279 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
280 if (!HAS_PENDING_EXCEPTION)
281 objh = JNIHandles::make_global(Handle(THREAD, obj));
282 }
283 if (HAS_PENDING_EXCEPTION) {
284 CLEAR_PENDING_EXCEPTION;
285 } else {
286 handle = objh;
287 }
288 }
289 oop obj = JNIHandles::resolve(handle);
290 return obj == NULL? NULL: get_object(obj)->as_instance();
291 }
292
293 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
294 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
295 _ArrayIndexOutOfBoundsException_instance
296 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
297 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
298 }
299 return _ArrayIndexOutOfBoundsException_instance;
300 }
301 ciInstance* ciEnv::ArrayStoreException_instance() {
302 if (_ArrayStoreException_instance == NULL) {
303 _ArrayStoreException_instance
304 = get_or_create_exception(_ArrayStoreException_handle,
305 vmSymbols::java_lang_ArrayStoreException());
306 }
307 return _ArrayStoreException_instance;
308 }
309 ciInstance* ciEnv::ClassCastException_instance() {
310 if (_ClassCastException_instance == NULL) {
311 _ClassCastException_instance
312 = get_or_create_exception(_ClassCastException_handle,
313 vmSymbols::java_lang_ClassCastException());
314 }
315 return _ClassCastException_instance;
316 }
317
318 ciInstance* ciEnv::the_null_string() {
319 if (_the_null_string == NULL) {
320 VM_ENTRY_MARK;
321 _the_null_string = get_object(Universe::the_null_string())->as_instance();
322 }
323 return _the_null_string;
324 }
325
326 ciInstance* ciEnv::the_min_jint_string() {
327 if (_the_min_jint_string == NULL) {
328 VM_ENTRY_MARK;
329 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
330 }
331 return _the_min_jint_string;
332 }
333
334 // ------------------------------------------------------------------
335 // ciEnv::get_method_from_handle
336 ciMethod* ciEnv::get_method_from_handle(Method* method) {
337 VM_ENTRY_MARK;
338 return get_metadata(method)->as_method();
339 }
340
341 // ------------------------------------------------------------------
342 // ciEnv::array_element_offset_in_bytes
343 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
344 VM_ENTRY_MARK;
345 objArrayOop a = (objArrayOop)a_h->get_oop();
346 assert(a->is_objArray(), "");
347 int length = a->length();
348 oop o = o_h->get_oop();
349 for (int i = 0; i < length; i++) {
350 if (a->obj_at(i) == o) return i;
351 }
352 return -1;
353 }
354
355
356 // ------------------------------------------------------------------
357 // ciEnv::check_klass_accessiblity
358 //
359 // Note: the logic of this method should mirror the logic of
360 // ConstantPool::verify_constant_pool_resolve.
361 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
362 Klass* resolved_klass) {
363 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
364 return true;
365 }
366 if (accessing_klass->is_obj_array_klass()) {
367 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
368 }
369 if (!accessing_klass->is_instance_klass()) {
370 return true;
371 }
372
373 if (resolved_klass->is_objArray_klass()) {
374 // Find the element klass, if this is an array.
375 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
376 }
377 if (resolved_klass->is_instance_klass()) {
378 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
379 InstanceKlass::cast(resolved_klass),
380 true) == Reflection::ACCESS_OK);
381 }
382 return true;
383 }
384
385 // ------------------------------------------------------------------
386 // ciEnv::get_klass_by_name_impl
387 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
388 const constantPoolHandle& cpool,
389 ciSymbol* name,
390 bool require_local) {
391 ASSERT_IN_VM;
392 EXCEPTION_CONTEXT;
393
394 // Now we need to check the SystemDictionary
395 Symbol* sym = name->get_symbol();
396 if (sym->byte_at(0) == 'L' &&
397 sym->byte_at(sym->utf8_length()-1) == ';') {
398 // This is a name from a signature. Strip off the trimmings.
399 // Call recursive to keep scope of strippedsym.
400 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
401 sym->utf8_length()-2,
402 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
403 ciSymbol* strippedname = get_symbol(strippedsym);
404 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
405 }
406
407 // Check for prior unloaded klass. The SystemDictionary's answers
408 // can vary over time but the compiler needs consistency.
409 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
410 if (unloaded_klass != NULL) {
411 if (require_local) return NULL;
412 return unloaded_klass;
413 }
414
415 Handle loader(THREAD, (oop)NULL);
416 Handle domain(THREAD, (oop)NULL);
417 if (accessing_klass != NULL) {
418 loader = Handle(THREAD, accessing_klass->loader());
419 domain = Handle(THREAD, accessing_klass->protection_domain());
420 }
421
422 // setup up the proper type to return on OOM
423 ciKlass* fail_type;
424 if (sym->byte_at(0) == '[') {
425 fail_type = _unloaded_ciobjarrayklass;
426 } else {
427 fail_type = _unloaded_ciinstance_klass;
428 }
429 Klass* found_klass;
430 {
431 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
432 MutexLocker ml(Compile_lock);
433 Klass* kls;
434 if (!require_local) {
435 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
436 KILL_COMPILE_ON_FATAL_(fail_type));
437 } else {
438 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
439 KILL_COMPILE_ON_FATAL_(fail_type));
440 }
441 found_klass = kls;
442 }
443
444 // If we fail to find an array klass, look again for its element type.
445 // The element type may be available either locally or via constraints.
446 // In either case, if we can find the element type in the system dictionary,
447 // we must build an array type around it. The CI requires array klasses
448 // to be loaded if their element klasses are loaded, except when memory
449 // is exhausted.
450 if (sym->byte_at(0) == '[' &&
451 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
452 // We have an unloaded array.
453 // Build it on the fly if the element class exists.
454 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
455 sym->utf8_length()-1,
456 KILL_COMPILE_ON_FATAL_(fail_type));
457
458 // Get element ciKlass recursively.
459 ciKlass* elem_klass =
460 get_klass_by_name_impl(accessing_klass,
461 cpool,
462 get_symbol(elem_sym),
463 require_local);
464 if (elem_klass != NULL && elem_klass->is_loaded()) {
465 // Now make an array for it
466 return ciObjArrayKlass::make_impl(elem_klass);
467 }
468 }
469
470 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
471 // Look inside the constant pool for pre-resolved class entries.
472 for (int i = cpool->length() - 1; i >= 1; i--) {
473 if (cpool->tag_at(i).is_klass()) {
474 Klass* kls = cpool->resolved_klass_at(i);
475 if (kls->name() == sym) {
476 found_klass = kls;
477 break;
478 }
479 }
480 }
481 }
482
483 if (found_klass != NULL) {
484 // Found it. Build a CI handle.
485 return get_klass(found_klass);
486 }
487
488 if (require_local) return NULL;
489
490 // Not yet loaded into the VM, or not governed by loader constraints.
491 // Make a CI representative for it.
492 return get_unloaded_klass(accessing_klass, name);
493 }
494
495 // ------------------------------------------------------------------
496 // ciEnv::get_klass_by_name
497 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
498 ciSymbol* klass_name,
499 bool require_local) {
500 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
501 constantPoolHandle(),
502 klass_name,
503 require_local);)
504 }
505
506 // ------------------------------------------------------------------
507 // ciEnv::get_klass_by_index_impl
508 //
509 // Implementation of get_klass_by_index.
510 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
511 int index,
512 bool& is_accessible,
513 ciInstanceKlass* accessor) {
514 EXCEPTION_CONTEXT;
515 Klass* klass = NULL;
516 Symbol* klass_name = NULL;
517
518 if (cpool->tag_at(index).is_symbol()) {
519 klass_name = cpool->symbol_at(index);
520 } else {
521 // Check if it's resolved if it's not a symbol constant pool entry.
522 klass = ConstantPool::klass_at_if_loaded(cpool, index);
523 // Try to look it up by name.
524 if (klass == NULL) {
525 klass_name = cpool->klass_name_at(index);
526 }
527 }
528
529 if (klass == NULL) {
530 // Not found in constant pool. Use the name to do the lookup.
531 ciKlass* k = get_klass_by_name_impl(accessor,
532 cpool,
533 get_symbol(klass_name),
534 false);
535 // Calculate accessibility the hard way.
536 if (!k->is_loaded()) {
537 is_accessible = false;
538 } else if (k->loader() != accessor->loader() &&
539 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
540 // Loaded only remotely. Not linked yet.
541 is_accessible = false;
542 } else {
543 // Linked locally, and we must also check public/private, etc.
544 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
545 }
546 return k;
547 }
548
549 // Check for prior unloaded klass. The SystemDictionary's answers
550 // can vary over time but the compiler needs consistency.
551 ciSymbol* name = get_symbol(klass->name());
552 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
553 if (unloaded_klass != NULL) {
554 is_accessible = false;
555 return unloaded_klass;
556 }
557
558 // It is known to be accessible, since it was found in the constant pool.
559 is_accessible = true;
560 return get_klass(klass);
561 }
562
563 // ------------------------------------------------------------------
564 // ciEnv::get_klass_by_index
565 //
566 // Get a klass from the constant pool.
567 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
568 int index,
569 bool& is_accessible,
570 ciInstanceKlass* accessor) {
571 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
572 }
573
574 // ------------------------------------------------------------------
575 // ciEnv::get_constant_by_index_impl
576 //
577 // Implementation of get_constant_by_index().
578 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
579 int pool_index, int cache_index,
580 ciInstanceKlass* accessor) {
581 bool ignore_will_link;
582 EXCEPTION_CONTEXT;
583 int index = pool_index;
584 if (cache_index >= 0) {
585 assert(index < 0, "only one kind of index at a time");
586 oop obj = cpool->resolved_references()->obj_at(cache_index);
587 if (obj != NULL) {
588 ciObject* ciobj = get_object(obj);
589 if (ciobj->is_array()) {
590 return ciConstant(T_ARRAY, ciobj);
591 } else {
592 assert(ciobj->is_instance(), "should be an instance");
593 return ciConstant(T_OBJECT, ciobj);
594 }
595 }
596 index = cpool->object_to_cp_index(cache_index);
597 }
598 constantTag tag = cpool->tag_at(index);
599 if (tag.is_int()) {
600 return ciConstant(T_INT, (jint)cpool->int_at(index));
601 } else if (tag.is_long()) {
602 return ciConstant((jlong)cpool->long_at(index));
603 } else if (tag.is_float()) {
604 return ciConstant((jfloat)cpool->float_at(index));
605 } else if (tag.is_double()) {
606 return ciConstant((jdouble)cpool->double_at(index));
607 } else if (tag.is_string()) {
608 oop string = NULL;
609 assert(cache_index >= 0, "should have a cache index");
610 if (cpool->is_pseudo_string_at(index)) {
611 string = cpool->pseudo_string_at(index, cache_index);
612 } else {
613 string = cpool->string_at(index, cache_index, THREAD);
614 if (HAS_PENDING_EXCEPTION) {
615 CLEAR_PENDING_EXCEPTION;
616 record_out_of_memory_failure();
617 return ciConstant();
618 }
619 }
620 ciObject* constant = get_object(string);
621 if (constant->is_array()) {
622 return ciConstant(T_ARRAY, constant);
623 } else {
624 assert (constant->is_instance(), "must be an instance, or not? ");
625 return ciConstant(T_OBJECT, constant);
626 }
627 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
628 // 4881222: allow ldc to take a class type
629 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
630 if (HAS_PENDING_EXCEPTION) {
631 CLEAR_PENDING_EXCEPTION;
632 record_out_of_memory_failure();
633 return ciConstant();
634 }
635 assert (klass->is_instance_klass() || klass->is_array_klass(),
636 "must be an instance or array klass ");
637 return ciConstant(T_OBJECT, klass->java_mirror());
638 } else if (tag.is_method_type()) {
639 // must execute Java code to link this CP entry into cache[i].f1
640 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
641 ciObject* ciobj = get_unloaded_method_type_constant(signature);
642 return ciConstant(T_OBJECT, ciobj);
643 } else if (tag.is_method_handle()) {
644 // must execute Java code to link this CP entry into cache[i].f1
645 int ref_kind = cpool->method_handle_ref_kind_at(index);
646 int callee_index = cpool->method_handle_klass_index_at(index);
647 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
648 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
649 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
650 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
651 return ciConstant(T_OBJECT, ciobj);
652 } else {
653 ShouldNotReachHere();
654 return ciConstant();
655 }
656 }
657
658 // ------------------------------------------------------------------
659 // ciEnv::get_constant_by_index
660 //
661 // Pull a constant out of the constant pool. How appropriate.
662 //
663 // Implementation note: this query is currently in no way cached.
664 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
665 int pool_index, int cache_index,
666 ciInstanceKlass* accessor) {
667 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
668 }
669
670 // ------------------------------------------------------------------
671 // ciEnv::get_field_by_index_impl
672 //
673 // Implementation of get_field_by_index.
674 //
675 // Implementation note: the results of field lookups are cached
676 // in the accessor klass.
677 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
678 int index) {
679 ciConstantPoolCache* cache = accessor->field_cache();
680 if (cache == NULL) {
681 ciField* field = new (arena()) ciField(accessor, index);
682 return field;
683 } else {
684 ciField* field = (ciField*)cache->get(index);
685 if (field == NULL) {
686 field = new (arena()) ciField(accessor, index);
687 cache->insert(index, field);
688 }
689 return field;
690 }
691 }
692
693 // ------------------------------------------------------------------
694 // ciEnv::get_field_by_index
695 //
696 // Get a field by index from a klass's constant pool.
697 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
698 int index) {
699 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
700 }
701
702 // ------------------------------------------------------------------
703 // ciEnv::lookup_method
704 //
705 // Perform an appropriate method lookup based on accessor, holder,
706 // name, signature, and bytecode.
707 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
708 ciKlass* holder,
709 Symbol* name,
710 Symbol* sig,
711 Bytecodes::Code bc,
712 constantTag tag) {
713 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
714 assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible");
715
716 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
717 Klass* holder_klass = holder->get_Klass();
718 methodHandle dest_method;
719 LinkInfo link_info(holder_klass, name, sig, accessor_klass, LinkInfo::needs_access_check, tag);
720 switch (bc) {
721 case Bytecodes::_invokestatic:
722 dest_method =
723 LinkResolver::resolve_static_call_or_null(link_info);
724 break;
725 case Bytecodes::_invokespecial:
726 dest_method =
727 LinkResolver::resolve_special_call_or_null(link_info);
728 break;
729 case Bytecodes::_invokeinterface:
730 dest_method =
731 LinkResolver::linktime_resolve_interface_method_or_null(link_info);
732 break;
733 case Bytecodes::_invokevirtual:
734 dest_method =
735 LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
736 break;
737 default: ShouldNotReachHere();
738 }
739
740 return dest_method();
741 }
742
743
744 // ------------------------------------------------------------------
745 // ciEnv::get_method_by_index_impl
746 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
747 int index, Bytecodes::Code bc,
748 ciInstanceKlass* accessor) {
749 if (bc == Bytecodes::_invokedynamic) {
750 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
751 bool is_resolved = !cpce->is_f1_null();
752 // FIXME: code generation could allow for null (unlinked) call site
753 // The call site could be made patchable as follows:
754 // Load the appendix argument from the constant pool.
755 // Test the appendix argument and jump to a known deopt routine if it is null.
756 // Jump through a patchable call site, which is initially a deopt routine.
757 // Patch the call site to the nmethod entry point of the static compiled lambda form.
758 // As with other two-component call sites, both values must be independently verified.
759
760 if (is_resolved) {
761 // Get the invoker Method* from the constant pool.
762 // (The appendix argument, if any, will be noted in the method's signature.)
763 Method* adapter = cpce->f1_as_method();
764 return get_method(adapter);
765 }
766
767 // Fake a method that is equivalent to a declared method.
768 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
769 ciSymbol* name = ciSymbol::invokeBasic_name();
770 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
771 return get_unloaded_method(holder, name, signature, accessor);
772 } else {
773 const int holder_index = cpool->klass_ref_index_at(index);
774 bool holder_is_accessible;
775 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
776
777 // Get the method's name and signature.
778 Symbol* name_sym = cpool->name_ref_at(index);
779 Symbol* sig_sym = cpool->signature_ref_at(index);
780
781 if (cpool->has_preresolution()
782 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
783 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
784 // Short-circuit lookups for JSR 292-related call sites.
785 // That is, do not rely only on name-based lookups, because they may fail
786 // if the names are not resolvable in the boot class loader (7056328).
787 switch (bc) {
788 case Bytecodes::_invokevirtual:
789 case Bytecodes::_invokeinterface:
790 case Bytecodes::_invokespecial:
791 case Bytecodes::_invokestatic:
792 {
793 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
794 if (m != NULL) {
795 return get_method(m);
796 }
797 }
798 break;
799 }
800 }
801
802 if (holder_is_accessible) { // Our declared holder is loaded.
803 constantTag tag = cpool->tag_ref_at(index);
804 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
805 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
806 if (m != NULL &&
807 (bc == Bytecodes::_invokestatic
808 ? m->method_holder()->is_not_initialized()
809 : !m->method_holder()->is_loaded())) {
810 m = NULL;
811 }
812 #ifdef ASSERT
813 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
814 m = NULL;
815 }
816 #endif
817 if (m != NULL) {
818 // We found the method.
819 return get_method(m);
820 }
821 }
822
823 // Either the declared holder was not loaded, or the method could
824 // not be found. Create a dummy ciMethod to represent the failed
825 // lookup.
826 ciSymbol* name = get_symbol(name_sym);
827 ciSymbol* signature = get_symbol(sig_sym);
828 return get_unloaded_method(holder, name, signature, accessor);
829 }
830 }
831
832
833 // ------------------------------------------------------------------
834 // ciEnv::get_instance_klass_for_declared_method_holder
835 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
836 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
837 // instead of a ciInstanceKlass. For that case simply pretend that the
838 // declared holder is Object.clone since that's where the call will bottom out.
839 // A more correct fix would trickle out through many interfaces in CI,
840 // requiring ciInstanceKlass* to become ciKlass* and many more places would
841 // require checks to make sure the expected type was found. Given that this
842 // only occurs for clone() the more extensive fix seems like overkill so
843 // instead we simply smear the array type into Object.
844 guarantee(method_holder != NULL, "no method holder");
845 if (method_holder->is_instance_klass()) {
846 return method_holder->as_instance_klass();
847 } else if (method_holder->is_array_klass()) {
848 return current()->Object_klass();
849 } else {
850 ShouldNotReachHere();
851 }
852 return NULL;
853 }
854
855
856 // ------------------------------------------------------------------
857 // ciEnv::get_method_by_index
858 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
859 int index, Bytecodes::Code bc,
860 ciInstanceKlass* accessor) {
861 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
862 }
863
864
865 // ------------------------------------------------------------------
866 // ciEnv::name_buffer
867 char *ciEnv::name_buffer(int req_len) {
868 if (_name_buffer_len < req_len) {
869 if (_name_buffer == NULL) {
870 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
871 _name_buffer_len = req_len;
872 } else {
873 _name_buffer =
874 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
875 _name_buffer_len = req_len;
876 }
877 }
878 return _name_buffer;
879 }
880
881 // ------------------------------------------------------------------
882 // ciEnv::is_in_vm
883 bool ciEnv::is_in_vm() {
884 return JavaThread::current()->thread_state() == _thread_in_vm;
885 }
886
887 bool ciEnv::system_dictionary_modification_counter_changed() {
888 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
889 }
890
891 // ------------------------------------------------------------------
892 // ciEnv::validate_compile_task_dependencies
893 //
894 // Check for changes during compilation (e.g. class loads, evolution,
895 // breakpoints, call site invalidation).
896 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
897 if (failing()) return; // no need for further checks
898
899 // First, check non-klass dependencies as we might return early and
900 // not check klass dependencies if the system dictionary
901 // modification counter hasn't changed (see below).
902 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
903 if (deps.is_klass_type()) continue; // skip klass dependencies
904 Klass* witness = deps.check_dependency();
905 if (witness != NULL) {
906 if (deps.type() == Dependencies::call_site_target_value) {
907 _inc_decompile_count_on_failure = false;
908 record_failure("call site target change");
909 } else {
910 record_failure("invalid non-klass dependency");
911 }
912 return;
913 }
914 }
915
916 // Klass dependencies must be checked when the system dictionary
917 // changes. If logging is enabled all violated dependences will be
918 // recorded in the log. In debug mode check dependencies even if
919 // the system dictionary hasn't changed to verify that no invalid
920 // dependencies were inserted. Any violated dependences in this
921 // case are dumped to the tty.
922 bool counter_changed = system_dictionary_modification_counter_changed();
923
924 bool verify_deps = trueInDebug;
925 if (!counter_changed && !verify_deps) return;
926
927 int klass_violations = 0;
928 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
929 if (!deps.is_klass_type()) continue; // skip non-klass dependencies
930 Klass* witness = deps.check_dependency();
931 if (witness != NULL) {
932 klass_violations++;
933 if (!counter_changed) {
934 // Dependence failed but counter didn't change. Log a message
935 // describing what failed and allow the assert at the end to
936 // trigger.
937 deps.print_dependency(witness);
938 } else if (xtty == NULL) {
939 // If we're not logging then a single violation is sufficient,
940 // otherwise we want to log all the dependences which were
941 // violated.
942 break;
943 }
944 }
945 }
946
947 if (klass_violations != 0) {
948 #ifdef ASSERT
949 if (!counter_changed && !PrintCompilation) {
950 // Print out the compile task that failed
951 _task->print_tty();
952 }
953 #endif
954 assert(counter_changed, "failed dependencies, but counter didn't change");
955 record_failure("concurrent class loading");
956 }
957 }
958
959 // ------------------------------------------------------------------
960 // ciEnv::register_method
961 void ciEnv::register_method(ciMethod* target,
962 int entry_bci,
963 CodeOffsets* offsets,
964 int orig_pc_offset,
965 CodeBuffer* code_buffer,
966 int frame_words,
967 OopMapSet* oop_map_set,
968 ExceptionHandlerTable* handler_table,
969 ImplicitExceptionTable* inc_table,
970 AbstractCompiler* compiler,
971 bool has_unsafe_access,
972 bool has_wide_vectors,
973 RTMState rtm_state) {
974 VM_ENTRY_MARK;
975 nmethod* nm = NULL;
976 {
977 // To prevent compile queue updates.
978 MutexLocker locker(MethodCompileQueue_lock, THREAD);
979
980 // Prevent SystemDictionary::add_to_hierarchy from running
981 // and invalidating our dependencies until we install this method.
982 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
983 MutexLocker ml(Compile_lock);
984 NoSafepointVerifier nsv;
985
986 // Change in Jvmti state may invalidate compilation.
987 if (!failing() && jvmti_state_changed()) {
988 record_failure("Jvmti state change invalidated dependencies");
989 }
990
991 // Change in DTrace flags may invalidate compilation.
992 if (!failing() &&
993 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
994 (!dtrace_method_probes() && DTraceMethodProbes) ||
995 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
996 record_failure("DTrace flags change invalidated dependencies");
997 }
998
999 if (!failing()) {
1000 if (log() != NULL) {
1001 // Log the dependencies which this compilation declares.
1002 dependencies()->log_all_dependencies();
1003 }
1004
1005 // Encode the dependencies now, so we can check them right away.
1006 dependencies()->encode_content_bytes();
1007
1008 // Check for {class loads, evolution, breakpoints, ...} during compilation
1009 validate_compile_task_dependencies(target);
1010 }
1011
1012 methodHandle method(THREAD, target->get_Method());
1013
1014 #if INCLUDE_RTM_OPT
1015 if (!failing() && (rtm_state != NoRTM) &&
1016 (method()->method_data() != NULL) &&
1017 (method()->method_data()->rtm_state() != rtm_state)) {
1018 // Preemptive decompile if rtm state was changed.
1019 record_failure("RTM state change invalidated rtm code");
1020 }
1021 #endif
1022
1023 if (failing()) {
1024 // While not a true deoptimization, it is a preemptive decompile.
1025 MethodData* mdo = method()->method_data();
1026 if (mdo != NULL && _inc_decompile_count_on_failure) {
1027 mdo->inc_decompile_count();
1028 }
1029
1030 // All buffers in the CodeBuffer are allocated in the CodeCache.
1031 // If the code buffer is created on each compile attempt
1032 // as in C2, then it must be freed.
1033 code_buffer->free_blob();
1034 return;
1035 }
1036
1037 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1038 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1039
1040 nm = nmethod::new_nmethod(method,
1041 compile_id(),
1042 entry_bci,
1043 offsets,
1044 orig_pc_offset,
1045 debug_info(), dependencies(), code_buffer,
1046 frame_words, oop_map_set,
1047 handler_table, inc_table,
1048 compiler, task()->comp_level());
1049
1050 // Free codeBlobs
1051 code_buffer->free_blob();
1052
1053 if (nm != NULL) {
1054 nm->set_has_unsafe_access(has_unsafe_access);
1055 nm->set_has_wide_vectors(has_wide_vectors);
1056 #if INCLUDE_RTM_OPT
1057 nm->set_rtm_state(rtm_state);
1058 #endif
1059
1060 // Record successful registration.
1061 // (Put nm into the task handle *before* publishing to the Java heap.)
1062 if (task() != NULL) {
1063 task()->set_code(nm);
1064 }
1065
1066 if (entry_bci == InvocationEntryBci) {
1067 if (TieredCompilation) {
1068 // If there is an old version we're done with it
1069 CompiledMethod* old = method->code();
1070 if (TraceMethodReplacement && old != NULL) {
1071 ResourceMark rm;
1072 char *method_name = method->name_and_sig_as_C_string();
1073 tty->print_cr("Replacing method %s", method_name);
1074 }
1075 if (old != NULL) {
1076 old->make_not_used();
1077 }
1078 }
1079 if (TraceNMethodInstalls) {
1080 ResourceMark rm;
1081 char *method_name = method->name_and_sig_as_C_string();
1082 ttyLocker ttyl;
1083 tty->print_cr("Installing method (%d) %s ",
1084 task()->comp_level(),
1085 method_name);
1086 }
1087 // Allow the code to be executed
1088 method->set_code(method, nm);
1089 } else {
1090 if (TraceNMethodInstalls) {
1091 ResourceMark rm;
1092 char *method_name = method->name_and_sig_as_C_string();
1093 ttyLocker ttyl;
1094 tty->print_cr("Installing osr method (%d) %s @ %d",
1095 task()->comp_level(),
1096 method_name,
1097 entry_bci);
1098 }
1099 method->method_holder()->add_osr_nmethod(nm);
1100 }
1101 }
1102 } // safepoints are allowed again
1103
1104 if (nm != NULL) {
1105 // JVMTI -- compiled method notification (must be done outside lock)
1106 nm->post_compiled_method_load_event();
1107 } else {
1108 // The CodeCache is full.
1109 record_failure("code cache is full");
1110 }
1111 }
1112
1113
1114 // ------------------------------------------------------------------
1115 // ciEnv::find_system_klass
1116 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1117 VM_ENTRY_MARK;
1118 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1119 }
1120
1121 // ------------------------------------------------------------------
1122 // ciEnv::comp_level
1123 int ciEnv::comp_level() {
1124 if (task() == NULL) return CompLevel_highest_tier;
1125 return task()->comp_level();
1126 }
1127
1128 // ------------------------------------------------------------------
1129 // ciEnv::compile_id
1130 uint ciEnv::compile_id() {
1131 if (task() == NULL) return 0;
1132 return task()->compile_id();
1133 }
1134
1135 // ------------------------------------------------------------------
1136 // ciEnv::notice_inlined_method()
1137 void ciEnv::notice_inlined_method(ciMethod* method) {
1138 _num_inlined_bytecodes += method->code_size_for_inlining();
1139 }
1140
1141 // ------------------------------------------------------------------
1142 // ciEnv::num_inlined_bytecodes()
1143 int ciEnv::num_inlined_bytecodes() const {
1144 return _num_inlined_bytecodes;
1145 }
1146
1147 // ------------------------------------------------------------------
1148 // ciEnv::record_failure()
1149 void ciEnv::record_failure(const char* reason) {
1150 if (_failure_reason == NULL) {
1151 // Record the first failure reason.
1152 _failure_reason = reason;
1153 }
1154 }
1155
1156 void ciEnv::report_failure(const char* reason) {
1157 // Create and fire JFR event
1158 EventCompilationFailure event;
1159 if (event.should_commit()) {
1160 event.set_compileId(compile_id());
1161 event.set_failureMessage(reason);
1162 event.commit();
1163 }
1164 }
1165
1166 // ------------------------------------------------------------------
1167 // ciEnv::record_method_not_compilable()
1168 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1169 int new_compilable =
1170 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1171
1172 // Only note transitions to a worse state
1173 if (new_compilable > _compilable) {
1174 if (log() != NULL) {
1175 if (all_tiers) {
1176 log()->elem("method_not_compilable");
1177 } else {
1178 log()->elem("method_not_compilable_at_tier level='%d'",
1179 current()->task()->comp_level());
1180 }
1181 }
1182 _compilable = new_compilable;
1183
1184 // Reset failure reason; this one is more important.
1185 _failure_reason = NULL;
1186 record_failure(reason);
1187 }
1188 }
1189
1190 // ------------------------------------------------------------------
1191 // ciEnv::record_out_of_memory_failure()
1192 void ciEnv::record_out_of_memory_failure() {
1193 // If memory is low, we stop compiling methods.
1194 record_method_not_compilable("out of memory");
1195 }
1196
1197 ciInstance* ciEnv::unloaded_ciinstance() {
1198 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1199 }
1200
1201 // ------------------------------------------------------------------
1202 // ciEnv::dump_replay_data*
1203
1204 // Don't change thread state and acquire any locks.
1205 // Safe to call from VM error reporter.
1206
1207 void ciEnv::dump_compile_data(outputStream* out) {
1208 CompileTask* task = this->task();
1209 Method* method = task->method();
1210 int entry_bci = task->osr_bci();
1211 int comp_level = task->comp_level();
1212 out->print("compile %s %s %s %d %d",
1213 method->klass_name()->as_quoted_ascii(),
1214 method->name()->as_quoted_ascii(),
1215 method->signature()->as_quoted_ascii(),
1216 entry_bci, comp_level);
1217 if (compiler_data() != NULL) {
1218 if (is_c2_compile(comp_level)) { // C2 or Shark
1219 #ifdef COMPILER2
1220 // Dump C2 inlining data.
1221 ((Compile*)compiler_data())->dump_inline_data(out);
1222 #endif
1223 } else if (is_c1_compile(comp_level)) { // C1
1224 #ifdef COMPILER1
1225 // Dump C1 inlining data.
1226 ((Compilation*)compiler_data())->dump_inline_data(out);
1227 #endif
1228 }
1229 }
1230 out->cr();
1231 }
1232
1233 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1234 ResourceMark rm;
1235 #if INCLUDE_JVMTI
1236 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1237 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1238 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1239 #endif // INCLUDE_JVMTI
1240
1241 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1242 out->print_cr("# %d ciObject found", objects->length());
1243 for (int i = 0; i < objects->length(); i++) {
1244 objects->at(i)->dump_replay_data(out);
1245 }
1246 dump_compile_data(out);
1247 out->flush();
1248 }
1249
1250 void ciEnv::dump_replay_data(outputStream* out) {
1251 GUARDED_VM_ENTRY(
1252 MutexLocker ml(Compile_lock);
1253 dump_replay_data_unsafe(out);
1254 )
1255 }
1256
1257 void ciEnv::dump_replay_data(int compile_id) {
1258 static char buffer[O_BUFLEN];
1259 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1260 if (ret > 0) {
1261 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1262 if (fd != -1) {
1263 FILE* replay_data_file = os::open(fd, "w");
1264 if (replay_data_file != NULL) {
1265 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1266 dump_replay_data(&replay_data_stream);
1267 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1268 } else {
1269 tty->print_cr("# Can't open file to dump replay data.");
1270 }
1271 }
1272 }
1273 }
1274
1275 void ciEnv::dump_inline_data(int compile_id) {
1276 static char buffer[O_BUFLEN];
1277 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1278 if (ret > 0) {
1279 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1280 if (fd != -1) {
1281 FILE* inline_data_file = os::open(fd, "w");
1282 if (inline_data_file != NULL) {
1283 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1284 GUARDED_VM_ENTRY(
1285 MutexLocker ml(Compile_lock);
1286 dump_compile_data(&replay_data_stream);
1287 )
1288 replay_data_stream.flush();
1289 tty->print("# Compiler inline data is saved as: ");
1290 tty->print_cr("%s", buffer);
1291 } else {
1292 tty->print_cr("# Can't open file to dump inline data.");
1293 }
1294 }
1295 }
1296 }