1 /*
2 * Copyright (c) 1999, 2016, 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 _compilable = MethodCompilable;
105 _break_at_compile = false;
106 _compiler_data = NULL;
107 #ifndef PRODUCT
108 assert(!firstEnv, "not initialized properly");
109 #endif /* !PRODUCT */
110
111 _system_dictionary_modification_counter = system_dictionary_modification_counter;
112 _num_inlined_bytecodes = 0;
113 assert(task == NULL || thread->task() == task, "sanity");
114 _task = task;
115 _log = NULL;
116
117 // Temporary buffer for creating symbols and such.
118 _name_buffer = NULL;
119 _name_buffer_len = 0;
120
121 _arena = &_ciEnv_arena;
122 _factory = new (_arena) ciObjectFactory(_arena, 128);
123
124 // Preload commonly referenced system ciObjects.
125
126 // During VM initialization, these instances have not yet been created.
127 // Assertions ensure that these instances are not accessed before
128 // their initialization.
129
130 assert(Universe::is_fully_initialized(), "should be complete");
131
132 oop o = Universe::null_ptr_exception_instance();
133 assert(o != NULL, "should have been initialized");
134 _NullPointerException_instance = get_object(o)->as_instance();
135 o = Universe::arithmetic_exception_instance();
136 assert(o != NULL, "should have been initialized");
137 _ArithmeticException_instance = get_object(o)->as_instance();
138
139 _ArrayIndexOutOfBoundsException_instance = NULL;
140 _ArrayStoreException_instance = NULL;
141 _ClassCastException_instance = NULL;
142 _the_null_string = NULL;
143 _the_min_jint_string = NULL;
144
145 _jvmti_can_hotswap_or_post_breakpoint = false;
146 _jvmti_can_access_local_variables = false;
147 _jvmti_can_post_on_exceptions = false;
148 _jvmti_can_pop_frame = false;
149 }
150
151 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
152 ASSERT_IN_VM;
153
154 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
155 CompilerThread* current_thread = CompilerThread::current();
156 assert(current_thread->env() == NULL, "must be");
157 current_thread->set_env(this);
158 assert(ciEnv::current() == this, "sanity");
159
160 _oop_recorder = NULL;
161 _debug_info = NULL;
162 _dependencies = NULL;
163 _failure_reason = NULL;
164 _compilable = MethodCompilable_never;
165 _break_at_compile = false;
166 _compiler_data = NULL;
167 #ifndef PRODUCT
168 assert(firstEnv, "must be first");
169 firstEnv = false;
170 #endif /* !PRODUCT */
171
172 _system_dictionary_modification_counter = 0;
173 _num_inlined_bytecodes = 0;
174 _task = NULL;
175 _log = NULL;
176
177 // Temporary buffer for creating symbols and such.
178 _name_buffer = NULL;
179 _name_buffer_len = 0;
180
181 _arena = arena;
182 _factory = new (_arena) ciObjectFactory(_arena, 128);
183
184 // Preload commonly referenced system ciObjects.
185
186 // During VM initialization, these instances have not yet been created.
187 // Assertions ensure that these instances are not accessed before
188 // their initialization.
189
190 assert(Universe::is_fully_initialized(), "must be");
191
192 _NullPointerException_instance = NULL;
193 _ArithmeticException_instance = NULL;
194 _ArrayIndexOutOfBoundsException_instance = NULL;
195 _ArrayStoreException_instance = NULL;
196 _ClassCastException_instance = NULL;
197 _the_null_string = NULL;
198 _the_min_jint_string = NULL;
199
200 _jvmti_can_hotswap_or_post_breakpoint = false;
201 _jvmti_can_access_local_variables = false;
202 _jvmti_can_post_on_exceptions = false;
203 _jvmti_can_pop_frame = false;
204 }
205
206 ciEnv::~ciEnv() {
207 GUARDED_VM_ENTRY(
208 CompilerThread* current_thread = CompilerThread::current();
209 _factory->remove_symbols();
210 // Need safepoint to clear the env on the thread. RedefineClasses might
211 // be reading it.
212 current_thread->set_env(NULL);
213 )
214 }
215
216 // ------------------------------------------------------------------
217 // Cache Jvmti state
218 void ciEnv::cache_jvmti_state() {
219 VM_ENTRY_MARK;
220 // Get Jvmti capabilities under lock to get consistant values.
221 MutexLocker mu(JvmtiThreadState_lock);
222 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
223 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
224 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
225 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
226 }
227
228 bool ciEnv::should_retain_local_variables() const {
229 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame;
230 }
231
232 bool ciEnv::jvmti_state_changed() const {
233 if (!_jvmti_can_access_local_variables &&
234 JvmtiExport::can_access_local_variables()) {
235 return true;
236 }
237 if (!_jvmti_can_hotswap_or_post_breakpoint &&
238 JvmtiExport::can_hotswap_or_post_breakpoint()) {
239 return true;
240 }
241 if (!_jvmti_can_post_on_exceptions &&
242 JvmtiExport::can_post_on_exceptions()) {
243 return true;
244 }
245 if (!_jvmti_can_pop_frame &&
246 JvmtiExport::can_pop_frame()) {
247 return true;
248 }
249 return false;
250 }
251
252 // ------------------------------------------------------------------
253 // Cache DTrace flags
254 void ciEnv::cache_dtrace_flags() {
255 // Need lock?
256 _dtrace_extended_probes = ExtendedDTraceProbes;
257 if (_dtrace_extended_probes) {
258 _dtrace_monitor_probes = true;
259 _dtrace_method_probes = true;
260 _dtrace_alloc_probes = true;
261 } else {
262 _dtrace_monitor_probes = DTraceMonitorProbes;
263 _dtrace_method_probes = DTraceMethodProbes;
264 _dtrace_alloc_probes = DTraceAllocProbes;
265 }
266 }
267
268 // ------------------------------------------------------------------
269 // helper for lazy exception creation
270 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
271 VM_ENTRY_MARK;
272 if (handle == NULL) {
273 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
274 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
275 jobject objh = NULL;
276 if (!HAS_PENDING_EXCEPTION && k != NULL) {
277 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
278 if (!HAS_PENDING_EXCEPTION)
279 objh = JNIHandles::make_global(obj);
280 }
281 if (HAS_PENDING_EXCEPTION) {
282 CLEAR_PENDING_EXCEPTION;
283 } else {
284 handle = objh;
285 }
286 }
287 oop obj = JNIHandles::resolve(handle);
288 return obj == NULL? NULL: get_object(obj)->as_instance();
289 }
290
291 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
292 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
293 _ArrayIndexOutOfBoundsException_instance
294 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
295 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
296 }
297 return _ArrayIndexOutOfBoundsException_instance;
298 }
299 ciInstance* ciEnv::ArrayStoreException_instance() {
300 if (_ArrayStoreException_instance == NULL) {
301 _ArrayStoreException_instance
302 = get_or_create_exception(_ArrayStoreException_handle,
303 vmSymbols::java_lang_ArrayStoreException());
304 }
305 return _ArrayStoreException_instance;
306 }
307 ciInstance* ciEnv::ClassCastException_instance() {
308 if (_ClassCastException_instance == NULL) {
309 _ClassCastException_instance
310 = get_or_create_exception(_ClassCastException_handle,
311 vmSymbols::java_lang_ClassCastException());
312 }
313 return _ClassCastException_instance;
314 }
315
316 ciInstance* ciEnv::the_null_string() {
317 if (_the_null_string == NULL) {
318 VM_ENTRY_MARK;
319 _the_null_string = get_object(Universe::the_null_string())->as_instance();
320 }
321 return _the_null_string;
322 }
323
324 ciInstance* ciEnv::the_min_jint_string() {
325 if (_the_min_jint_string == NULL) {
326 VM_ENTRY_MARK;
327 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
328 }
329 return _the_min_jint_string;
330 }
331
332 // ------------------------------------------------------------------
333 // ciEnv::get_method_from_handle
334 ciMethod* ciEnv::get_method_from_handle(Method* method) {
335 VM_ENTRY_MARK;
336 return get_metadata(method)->as_method();
337 }
338
339 // ------------------------------------------------------------------
340 // ciEnv::array_element_offset_in_bytes
341 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
342 VM_ENTRY_MARK;
343 objArrayOop a = (objArrayOop)a_h->get_oop();
344 assert(a->is_objArray(), "");
345 int length = a->length();
346 oop o = o_h->get_oop();
347 for (int i = 0; i < length; i++) {
348 if (a->obj_at(i) == o) return i;
349 }
350 return -1;
351 }
352
353
354 // ------------------------------------------------------------------
355 // ciEnv::check_klass_accessiblity
356 //
357 // Note: the logic of this method should mirror the logic of
358 // ConstantPool::verify_constant_pool_resolve.
359 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
360 Klass* resolved_klass) {
361 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
362 return true;
363 }
364 if (accessing_klass->is_obj_array_klass()) {
365 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
366 }
367 if (!accessing_klass->is_instance_klass()) {
368 return true;
369 }
370
371 if (resolved_klass->is_objArray_klass()) {
372 // Find the element klass, if this is an array.
373 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
374 }
375 if (resolved_klass->is_instance_klass()) {
376 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
377 resolved_klass,
378 true) == Reflection::ACCESS_OK);
379 }
380 return true;
381 }
382
383 // ------------------------------------------------------------------
384 // ciEnv::get_klass_by_name_impl
385 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
386 const constantPoolHandle& cpool,
387 ciSymbol* name,
388 bool require_local) {
389 ASSERT_IN_VM;
390 EXCEPTION_CONTEXT;
391
392 // Now we need to check the SystemDictionary
393 Symbol* sym = name->get_symbol();
394 if (sym->byte_at(0) == 'L' &&
395 sym->byte_at(sym->utf8_length()-1) == ';') {
396 // This is a name from a signature. Strip off the trimmings.
397 // Call recursive to keep scope of strippedsym.
398 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
399 sym->utf8_length()-2,
400 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
401 ciSymbol* strippedname = get_symbol(strippedsym);
402 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
403 }
404
405 // Check for prior unloaded klass. The SystemDictionary's answers
406 // can vary over time but the compiler needs consistency.
407 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
408 if (unloaded_klass != NULL) {
409 if (require_local) return NULL;
410 return unloaded_klass;
411 }
412
413 Handle loader(THREAD, (oop)NULL);
414 Handle domain(THREAD, (oop)NULL);
415 if (accessing_klass != NULL) {
416 loader = Handle(THREAD, accessing_klass->loader());
417 domain = Handle(THREAD, accessing_klass->protection_domain());
418 }
419
420 // setup up the proper type to return on OOM
421 ciKlass* fail_type;
422 if (sym->byte_at(0) == '[') {
423 fail_type = _unloaded_ciobjarrayklass;
424 } else {
425 fail_type = _unloaded_ciinstance_klass;
426 }
427 KlassHandle found_klass;
428 {
429 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
430 MutexLocker ml(Compile_lock);
431 Klass* kls;
432 if (!require_local) {
433 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
434 KILL_COMPILE_ON_FATAL_(fail_type));
435 } else {
436 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
437 KILL_COMPILE_ON_FATAL_(fail_type));
438 }
439 found_klass = KlassHandle(THREAD, kls);
440 }
441
442 // If we fail to find an array klass, look again for its element type.
443 // The element type may be available either locally or via constraints.
444 // In either case, if we can find the element type in the system dictionary,
445 // we must build an array type around it. The CI requires array klasses
446 // to be loaded if their element klasses are loaded, except when memory
447 // is exhausted.
448 if (sym->byte_at(0) == '[' &&
449 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
450 // We have an unloaded array.
451 // Build it on the fly if the element class exists.
452 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
453 sym->utf8_length()-1,
454 KILL_COMPILE_ON_FATAL_(fail_type));
455
456 // Get element ciKlass recursively.
457 ciKlass* elem_klass =
458 get_klass_by_name_impl(accessing_klass,
459 cpool,
460 get_symbol(elem_sym),
461 require_local);
462 if (elem_klass != NULL && elem_klass->is_loaded()) {
463 // Now make an array for it
464 return ciObjArrayKlass::make_impl(elem_klass);
465 }
466 }
467
468 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
469 // Look inside the constant pool for pre-resolved class entries.
470 for (int i = cpool->length() - 1; i >= 1; i--) {
471 if (cpool->tag_at(i).is_klass()) {
472 Klass* kls = cpool->resolved_klass_at(i);
473 if (kls->name() == sym) {
474 found_klass = KlassHandle(THREAD, kls);
475 break;
476 }
477 }
478 }
479 }
480
481 if (found_klass() != NULL) {
482 // Found it. Build a CI handle.
483 return get_klass(found_klass());
484 }
485
486 if (require_local) return NULL;
487
488 // Not yet loaded into the VM, or not governed by loader constraints.
489 // Make a CI representative for it.
490 return get_unloaded_klass(accessing_klass, name);
491 }
492
493 // ------------------------------------------------------------------
494 // ciEnv::get_klass_by_name
495 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
496 ciSymbol* klass_name,
497 bool require_local) {
498 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
499 constantPoolHandle(),
500 klass_name,
501 require_local);)
502 }
503
504 // ------------------------------------------------------------------
505 // ciEnv::get_klass_by_index_impl
506 //
507 // Implementation of get_klass_by_index.
508 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
509 int index,
510 bool& is_accessible,
511 ciInstanceKlass* accessor) {
512 EXCEPTION_CONTEXT;
513 KlassHandle klass; // = NULL;
514 Symbol* klass_name = NULL;
515
516 if (cpool->tag_at(index).is_symbol()) {
517 klass_name = cpool->symbol_at(index);
518 } else {
519 // Check if it's resolved if it's not a symbol constant pool entry.
520 klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index));
521 // Try to look it up by name.
522 if (klass.is_null()) {
523 klass_name = cpool->klass_name_at(index);
524 }
525 }
526
527 if (klass.is_null()) {
528 // Not found in constant pool. Use the name to do the lookup.
529 ciKlass* k = get_klass_by_name_impl(accessor,
530 cpool,
531 get_symbol(klass_name),
532 false);
533 // Calculate accessibility the hard way.
534 if (!k->is_loaded()) {
535 is_accessible = false;
536 } else if (k->loader() != accessor->loader() &&
537 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
538 // Loaded only remotely. Not linked yet.
539 is_accessible = false;
540 } else {
541 // Linked locally, and we must also check public/private, etc.
542 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
543 }
544 return k;
545 }
546
547 // Check for prior unloaded klass. The SystemDictionary's answers
548 // can vary over time but the compiler needs consistency.
549 ciSymbol* name = get_symbol(klass()->name());
550 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
551 if (unloaded_klass != NULL) {
552 is_accessible = false;
553 return unloaded_klass;
554 }
555
556 // It is known to be accessible, since it was found in the constant pool.
557 is_accessible = true;
558 return get_klass(klass());
559 }
560
561 // ------------------------------------------------------------------
562 // ciEnv::get_klass_by_index
563 //
564 // Get a klass from the constant pool.
565 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
566 int index,
567 bool& is_accessible,
568 ciInstanceKlass* accessor) {
569 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
570 }
571
572 // ------------------------------------------------------------------
573 // ciEnv::get_constant_by_index_impl
574 //
575 // Implementation of get_constant_by_index().
576 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
577 int pool_index, int cache_index,
578 ciInstanceKlass* accessor) {
579 bool ignore_will_link;
580 EXCEPTION_CONTEXT;
581 int index = pool_index;
582 if (cache_index >= 0) {
583 assert(index < 0, "only one kind of index at a time");
584 oop obj = cpool->resolved_references()->obj_at(cache_index);
585 if (obj != NULL) {
586 ciObject* ciobj = get_object(obj);
587 if (ciobj->is_array()) {
588 return ciConstant(T_ARRAY, ciobj);
589 } else {
590 assert(ciobj->is_instance(), "should be an instance");
591 return ciConstant(T_OBJECT, ciobj);
592 }
593 }
594 index = cpool->object_to_cp_index(cache_index);
595 }
596 constantTag tag = cpool->tag_at(index);
597 if (tag.is_int()) {
598 return ciConstant(T_INT, (jint)cpool->int_at(index));
599 } else if (tag.is_long()) {
600 return ciConstant((jlong)cpool->long_at(index));
601 } else if (tag.is_float()) {
602 return ciConstant((jfloat)cpool->float_at(index));
603 } else if (tag.is_double()) {
604 return ciConstant((jdouble)cpool->double_at(index));
605 } else if (tag.is_string()) {
606 oop string = NULL;
607 assert(cache_index >= 0, "should have a cache index");
608 if (cpool->is_pseudo_string_at(index)) {
609 string = cpool->pseudo_string_at(index, cache_index);
610 } else {
611 string = cpool->string_at(index, cache_index, THREAD);
612 if (HAS_PENDING_EXCEPTION) {
613 CLEAR_PENDING_EXCEPTION;
614 record_out_of_memory_failure();
615 return ciConstant();
616 }
617 }
618 ciObject* constant = get_object(string);
619 if (constant->is_array()) {
620 return ciConstant(T_ARRAY, constant);
621 } else {
622 assert (constant->is_instance(), "must be an instance, or not? ");
623 return ciConstant(T_OBJECT, constant);
624 }
625 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
626 // 4881222: allow ldc to take a class type
627 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
628 if (HAS_PENDING_EXCEPTION) {
629 CLEAR_PENDING_EXCEPTION;
630 record_out_of_memory_failure();
631 return ciConstant();
632 }
633 assert (klass->is_instance_klass() || klass->is_array_klass(),
634 "must be an instance or array klass ");
635 return ciConstant(T_OBJECT, klass->java_mirror());
636 } else if (tag.is_method_type()) {
637 // must execute Java code to link this CP entry into cache[i].f1
638 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
639 ciObject* ciobj = get_unloaded_method_type_constant(signature);
640 return ciConstant(T_OBJECT, ciobj);
641 } else if (tag.is_method_handle()) {
642 // must execute Java code to link this CP entry into cache[i].f1
643 int ref_kind = cpool->method_handle_ref_kind_at(index);
644 int callee_index = cpool->method_handle_klass_index_at(index);
645 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
646 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
647 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
648 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
649 return ciConstant(T_OBJECT, ciobj);
650 } else {
651 ShouldNotReachHere();
652 return ciConstant();
653 }
654 }
655
656 // ------------------------------------------------------------------
657 // ciEnv::get_constant_by_index
658 //
659 // Pull a constant out of the constant pool. How appropriate.
660 //
661 // Implementation note: this query is currently in no way cached.
662 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
663 int pool_index, int cache_index,
664 ciInstanceKlass* accessor) {
665 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
666 }
667
668 // ------------------------------------------------------------------
669 // ciEnv::get_field_by_index_impl
670 //
671 // Implementation of get_field_by_index.
672 //
673 // Implementation note: the results of field lookups are cached
674 // in the accessor klass.
675 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
676 int index) {
677 ciConstantPoolCache* cache = accessor->field_cache();
678 if (cache == NULL) {
679 ciField* field = new (arena()) ciField(accessor, index);
680 return field;
681 } else {
682 ciField* field = (ciField*)cache->get(index);
683 if (field == NULL) {
684 field = new (arena()) ciField(accessor, index);
685 cache->insert(index, field);
686 }
687 return field;
688 }
689 }
690
691 // ------------------------------------------------------------------
692 // ciEnv::get_field_by_index
693 //
694 // Get a field by index from a klass's constant pool.
695 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
696 int index) {
697 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
698 }
699
700 // ------------------------------------------------------------------
701 // ciEnv::lookup_method
702 //
703 // Perform an appropriate method lookup based on accessor, holder,
704 // name, signature, and bytecode.
705 Method* ciEnv::lookup_method(InstanceKlass* accessor,
706 InstanceKlass* holder,
707 Symbol* name,
708 Symbol* sig,
709 Bytecodes::Code bc,
710 constantTag tag) {
711 EXCEPTION_CONTEXT;
712 KlassHandle h_accessor(THREAD, accessor);
713 KlassHandle h_holder(THREAD, holder);
714 LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL));
715 methodHandle dest_method;
716 LinkInfo link_info(h_holder, name, sig, h_accessor, LinkInfo::needs_access_check, tag);
717 switch (bc) {
718 case Bytecodes::_invokestatic:
719 dest_method =
720 LinkResolver::resolve_static_call_or_null(link_info);
721 break;
722 case Bytecodes::_invokespecial:
723 dest_method =
724 LinkResolver::resolve_special_call_or_null(link_info);
725 break;
726 case Bytecodes::_invokeinterface:
727 dest_method =
728 LinkResolver::linktime_resolve_interface_method_or_null(link_info);
729 break;
730 case Bytecodes::_invokevirtual:
731 dest_method =
732 LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
733 break;
734 default: ShouldNotReachHere();
735 }
736
737 return dest_method();
738 }
739
740
741 // ------------------------------------------------------------------
742 // ciEnv::get_method_by_index_impl
743 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
744 int index, Bytecodes::Code bc,
745 ciInstanceKlass* accessor) {
746 if (bc == Bytecodes::_invokedynamic) {
747 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
748 bool is_resolved = !cpce->is_f1_null();
749 // FIXME: code generation could allow for null (unlinked) call site
750 // The call site could be made patchable as follows:
751 // Load the appendix argument from the constant pool.
752 // Test the appendix argument and jump to a known deopt routine if it is null.
753 // Jump through a patchable call site, which is initially a deopt routine.
754 // Patch the call site to the nmethod entry point of the static compiled lambda form.
755 // As with other two-component call sites, both values must be independently verified.
756
757 if (is_resolved) {
758 // Get the invoker Method* from the constant pool.
759 // (The appendix argument, if any, will be noted in the method's signature.)
760 Method* adapter = cpce->f1_as_method();
761 return get_method(adapter);
762 }
763
764 // Fake a method that is equivalent to a declared method.
765 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
766 ciSymbol* name = ciSymbol::invokeBasic_name();
767 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
768 return get_unloaded_method(holder, name, signature, accessor);
769 } else {
770 const int holder_index = cpool->klass_ref_index_at(index);
771 bool holder_is_accessible;
772 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
773 ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder);
774
775 // Get the method's name and signature.
776 Symbol* name_sym = cpool->name_ref_at(index);
777 Symbol* sig_sym = cpool->signature_ref_at(index);
778
779 if (cpool->has_preresolution()
780 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
781 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
782 // Short-circuit lookups for JSR 292-related call sites.
783 // That is, do not rely only on name-based lookups, because they may fail
784 // if the names are not resolvable in the boot class loader (7056328).
785 switch (bc) {
786 case Bytecodes::_invokevirtual:
787 case Bytecodes::_invokeinterface:
788 case Bytecodes::_invokespecial:
789 case Bytecodes::_invokestatic:
790 {
791 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
792 if (m != NULL) {
793 return get_method(m);
794 }
795 }
796 break;
797 }
798 }
799
800 if (holder_is_accessible) { // Our declared holder is loaded.
801 InstanceKlass* lookup = declared_holder->get_instanceKlass();
802 constantTag tag = cpool->tag_ref_at(index);
803 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
804 Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc, tag);
805 if (m != NULL &&
806 (bc == Bytecodes::_invokestatic
807 ? m->method_holder()->is_not_initialized()
808 : !m->method_holder()->is_loaded())) {
809 m = NULL;
810 }
811 #ifdef ASSERT
812 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
813 m = NULL;
814 }
815 #endif
816 if (m != NULL) {
817 // We found the method.
818 return get_method(m);
819 }
820 }
821
822 // Either the declared holder was not loaded, or the method could
823 // not be found. Create a dummy ciMethod to represent the failed
824 // lookup.
825 ciSymbol* name = get_symbol(name_sym);
826 ciSymbol* signature = get_symbol(sig_sym);
827 return get_unloaded_method(declared_holder, name, signature, accessor);
828 }
829 }
830
831
832 // ------------------------------------------------------------------
833 // ciEnv::get_instance_klass_for_declared_method_holder
834 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
835 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
836 // instead of a ciInstanceKlass. For that case simply pretend that the
837 // declared holder is Object.clone since that's where the call will bottom out.
838 // A more correct fix would trickle out through many interfaces in CI,
839 // requiring ciInstanceKlass* to become ciKlass* and many more places would
840 // require checks to make sure the expected type was found. Given that this
841 // only occurs for clone() the more extensive fix seems like overkill so
842 // instead we simply smear the array type into Object.
843 guarantee(method_holder != NULL, "no method holder");
844 if (method_holder->is_instance_klass()) {
845 return method_holder->as_instance_klass();
846 } else if (method_holder->is_array_klass()) {
847 return current()->Object_klass();
848 } else {
849 ShouldNotReachHere();
850 }
851 return NULL;
852 }
853
854
855 // ------------------------------------------------------------------
856 // ciEnv::get_method_by_index
857 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
858 int index, Bytecodes::Code bc,
859 ciInstanceKlass* accessor) {
860 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
861 }
862
863
864 // ------------------------------------------------------------------
865 // ciEnv::name_buffer
866 char *ciEnv::name_buffer(int req_len) {
867 if (_name_buffer_len < req_len) {
868 if (_name_buffer == NULL) {
869 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
870 _name_buffer_len = req_len;
871 } else {
872 _name_buffer =
873 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
874 _name_buffer_len = req_len;
875 }
876 }
877 return _name_buffer;
878 }
879
880 // ------------------------------------------------------------------
881 // ciEnv::is_in_vm
882 bool ciEnv::is_in_vm() {
883 return JavaThread::current()->thread_state() == _thread_in_vm;
884 }
885
886 bool ciEnv::system_dictionary_modification_counter_changed() {
887 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
888 }
889
890 // ------------------------------------------------------------------
891 // ciEnv::validate_compile_task_dependencies
892 //
893 // Check for changes during compilation (e.g. class loads, evolution,
894 // breakpoints, call site invalidation).
895 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
896 if (failing()) return; // no need for further checks
897
898 // First, check non-klass dependencies as we might return early and
899 // not check klass dependencies if the system dictionary
900 // modification counter hasn't changed (see below).
901 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
902 if (deps.is_klass_type()) continue; // skip klass dependencies
903 Klass* witness = deps.check_dependency();
904 if (witness != NULL) {
905 record_failure("invalid non-klass dependency");
906 return;
907 }
908 }
909
910 // Klass dependencies must be checked when the system dictionary
911 // changes. If logging is enabled all violated dependences will be
912 // recorded in the log. In debug mode check dependencies even if
913 // the system dictionary hasn't changed to verify that no invalid
914 // dependencies were inserted. Any violated dependences in this
915 // case are dumped to the tty.
916 bool counter_changed = system_dictionary_modification_counter_changed();
917
918 bool verify_deps = trueInDebug;
919 if (!counter_changed && !verify_deps) return;
920
921 int klass_violations = 0;
922 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
923 if (!deps.is_klass_type()) continue; // skip non-klass dependencies
924 Klass* witness = deps.check_dependency();
925 if (witness != NULL) {
926 klass_violations++;
927 if (!counter_changed) {
928 // Dependence failed but counter didn't change. Log a message
929 // describing what failed and allow the assert at the end to
930 // trigger.
931 deps.print_dependency(witness);
932 } else if (xtty == NULL) {
933 // If we're not logging then a single violation is sufficient,
934 // otherwise we want to log all the dependences which were
935 // violated.
936 break;
937 }
938 }
939 }
940
941 if (klass_violations != 0) {
942 #ifdef ASSERT
943 if (!counter_changed && !PrintCompilation) {
944 // Print out the compile task that failed
945 _task->print_tty();
946 }
947 #endif
948 assert(counter_changed, "failed dependencies, but counter didn't change");
949 record_failure("concurrent class loading");
950 }
951 }
952
953 // ------------------------------------------------------------------
954 // ciEnv::register_method
955 void ciEnv::register_method(ciMethod* target,
956 int entry_bci,
957 CodeOffsets* offsets,
958 int orig_pc_offset,
959 CodeBuffer* code_buffer,
960 int frame_words,
961 OopMapSet* oop_map_set,
962 ExceptionHandlerTable* handler_table,
963 ImplicitExceptionTable* inc_table,
964 AbstractCompiler* compiler,
965 bool has_unsafe_access,
966 bool has_wide_vectors,
967 RTMState rtm_state) {
968 VM_ENTRY_MARK;
969 nmethod* nm = NULL;
970 {
971 // To prevent compile queue updates.
972 MutexLocker locker(MethodCompileQueue_lock, THREAD);
973
974 // Prevent SystemDictionary::add_to_hierarchy from running
975 // and invalidating our dependencies until we install this method.
976 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
977 MutexLocker ml(Compile_lock);
978 NoSafepointVerifier nsv;
979
980 // Change in Jvmti state may invalidate compilation.
981 if (!failing() && jvmti_state_changed()) {
982 record_failure("Jvmti state change invalidated dependencies");
983 }
984
985 // Change in DTrace flags may invalidate compilation.
986 if (!failing() &&
987 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
988 (!dtrace_method_probes() && DTraceMethodProbes) ||
989 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
990 record_failure("DTrace flags change invalidated dependencies");
991 }
992
993 if (!failing()) {
994 if (log() != NULL) {
995 // Log the dependencies which this compilation declares.
996 dependencies()->log_all_dependencies();
997 }
998
999 // Encode the dependencies now, so we can check them right away.
1000 dependencies()->encode_content_bytes();
1001
1002 // Check for {class loads, evolution, breakpoints, ...} during compilation
1003 validate_compile_task_dependencies(target);
1004 }
1005
1006 methodHandle method(THREAD, target->get_Method());
1007
1008 #if INCLUDE_RTM_OPT
1009 if (!failing() && (rtm_state != NoRTM) &&
1010 (method()->method_data() != NULL) &&
1011 (method()->method_data()->rtm_state() != rtm_state)) {
1012 // Preemptive decompile if rtm state was changed.
1013 record_failure("RTM state change invalidated rtm code");
1014 }
1015 #endif
1016
1017 if (failing()) {
1018 // While not a true deoptimization, it is a preemptive decompile.
1019 MethodData* mdo = method()->method_data();
1020 if (mdo != NULL) {
1021 mdo->inc_decompile_count();
1022 }
1023
1024 // All buffers in the CodeBuffer are allocated in the CodeCache.
1025 // If the code buffer is created on each compile attempt
1026 // as in C2, then it must be freed.
1027 code_buffer->free_blob();
1028 return;
1029 }
1030
1031 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1032 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1033
1034 nm = nmethod::new_nmethod(method,
1035 compile_id(),
1036 entry_bci,
1037 offsets,
1038 orig_pc_offset,
1039 debug_info(), dependencies(), code_buffer,
1040 frame_words, oop_map_set,
1041 handler_table, inc_table,
1042 compiler, task()->comp_level());
1043
1044 // Free codeBlobs
1045 code_buffer->free_blob();
1046
1047 if (nm != NULL) {
1048 nm->set_has_unsafe_access(has_unsafe_access);
1049 nm->set_has_wide_vectors(has_wide_vectors);
1050 #if INCLUDE_RTM_OPT
1051 nm->set_rtm_state(rtm_state);
1052 #endif
1053
1054 // Record successful registration.
1055 // (Put nm into the task handle *before* publishing to the Java heap.)
1056 if (task() != NULL) {
1057 task()->set_code(nm);
1058 }
1059
1060 if (entry_bci == InvocationEntryBci) {
1061 if (TieredCompilation) {
1062 // If there is an old version we're done with it
1063 CompiledMethod* old = method->code();
1064 if (TraceMethodReplacement && old != NULL) {
1065 ResourceMark rm;
1066 char *method_name = method->name_and_sig_as_C_string();
1067 tty->print_cr("Replacing method %s", method_name);
1068 }
1069 if (old != NULL) {
1070 old->make_not_used();
1071 }
1072 }
1073 if (TraceNMethodInstalls) {
1074 ResourceMark rm;
1075 char *method_name = method->name_and_sig_as_C_string();
1076 ttyLocker ttyl;
1077 tty->print_cr("Installing method (%d) %s ",
1078 task()->comp_level(),
1079 method_name);
1080 }
1081 // Allow the code to be executed
1082 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
1083 method->set_code(method, nm);
1084 } else {
1085 if (TraceNMethodInstalls) {
1086 ResourceMark rm;
1087 char *method_name = method->name_and_sig_as_C_string();
1088 ttyLocker ttyl;
1089 tty->print_cr("Installing osr method (%d) %s @ %d",
1090 task()->comp_level(),
1091 method_name,
1092 entry_bci);
1093 }
1094 method->method_holder()->add_osr_nmethod(nm);
1095 }
1096 }
1097 } // safepoints are allowed again
1098
1099 if (nm != NULL) {
1100 // JVMTI -- compiled method notification (must be done outside lock)
1101 nm->post_compiled_method_load_event();
1102 } else {
1103 // The CodeCache is full.
1104 record_failure("code cache is full");
1105 }
1106 }
1107
1108
1109 // ------------------------------------------------------------------
1110 // ciEnv::find_system_klass
1111 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1112 VM_ENTRY_MARK;
1113 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1114 }
1115
1116 // ------------------------------------------------------------------
1117 // ciEnv::comp_level
1118 int ciEnv::comp_level() {
1119 if (task() == NULL) return CompLevel_highest_tier;
1120 return task()->comp_level();
1121 }
1122
1123 // ------------------------------------------------------------------
1124 // ciEnv::compile_id
1125 uint ciEnv::compile_id() {
1126 if (task() == NULL) return 0;
1127 return task()->compile_id();
1128 }
1129
1130 // ------------------------------------------------------------------
1131 // ciEnv::notice_inlined_method()
1132 void ciEnv::notice_inlined_method(ciMethod* method) {
1133 _num_inlined_bytecodes += method->code_size_for_inlining();
1134 }
1135
1136 // ------------------------------------------------------------------
1137 // ciEnv::num_inlined_bytecodes()
1138 int ciEnv::num_inlined_bytecodes() const {
1139 return _num_inlined_bytecodes;
1140 }
1141
1142 // ------------------------------------------------------------------
1143 // ciEnv::record_failure()
1144 void ciEnv::record_failure(const char* reason) {
1145 if (_failure_reason == NULL) {
1146 // Record the first failure reason.
1147 _failure_reason = reason;
1148 }
1149 }
1150
1151 void ciEnv::report_failure(const char* reason) {
1152 // Create and fire JFR event
1153 EventCompilationFailure event;
1154 if (event.should_commit()) {
1155 event.set_compileId(compile_id());
1156 event.set_failureMessage(reason);
1157 event.commit();
1158 }
1159 }
1160
1161 // ------------------------------------------------------------------
1162 // ciEnv::record_method_not_compilable()
1163 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1164 int new_compilable =
1165 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1166
1167 // Only note transitions to a worse state
1168 if (new_compilable > _compilable) {
1169 if (log() != NULL) {
1170 if (all_tiers) {
1171 log()->elem("method_not_compilable");
1172 } else {
1173 log()->elem("method_not_compilable_at_tier level='%d'",
1174 current()->task()->comp_level());
1175 }
1176 }
1177 _compilable = new_compilable;
1178
1179 // Reset failure reason; this one is more important.
1180 _failure_reason = NULL;
1181 record_failure(reason);
1182 }
1183 }
1184
1185 // ------------------------------------------------------------------
1186 // ciEnv::record_out_of_memory_failure()
1187 void ciEnv::record_out_of_memory_failure() {
1188 // If memory is low, we stop compiling methods.
1189 record_method_not_compilable("out of memory");
1190 }
1191
1192 ciInstance* ciEnv::unloaded_ciinstance() {
1193 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1194 }
1195
1196 // ------------------------------------------------------------------
1197 // ciEnv::dump_replay_data*
1198
1199 // Don't change thread state and acquire any locks.
1200 // Safe to call from VM error reporter.
1201
1202 void ciEnv::dump_compile_data(outputStream* out) {
1203 CompileTask* task = this->task();
1204 Method* method = task->method();
1205 int entry_bci = task->osr_bci();
1206 int comp_level = task->comp_level();
1207 out->print("compile %s %s %s %d %d",
1208 method->klass_name()->as_quoted_ascii(),
1209 method->name()->as_quoted_ascii(),
1210 method->signature()->as_quoted_ascii(),
1211 entry_bci, comp_level);
1212 if (compiler_data() != NULL) {
1213 if (is_c2_compile(comp_level)) { // C2 or Shark
1214 #ifdef COMPILER2
1215 // Dump C2 inlining data.
1216 ((Compile*)compiler_data())->dump_inline_data(out);
1217 #endif
1218 } else if (is_c1_compile(comp_level)) { // C1
1219 #ifdef COMPILER1
1220 // Dump C1 inlining data.
1221 ((Compilation*)compiler_data())->dump_inline_data(out);
1222 #endif
1223 }
1224 }
1225 out->cr();
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 = 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 = 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 }