1 /*
2 * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "ci/ciConstant.hpp"
28 #include "ci/ciEnv.hpp"
29 #include "ci/ciField.hpp"
30 #include "ci/ciInstance.hpp"
31 #include "ci/ciInstanceKlass.hpp"
32 #include "ci/ciMethod.hpp"
33 #include "ci/ciNullObject.hpp"
34 #include "ci/ciReplay.hpp"
35 #include "ci/ciUtilities.inline.hpp"
36 #include "classfile/symbolTable.hpp"
37 #include "classfile/systemDictionary.hpp"
38 #include "classfile/vmSymbols.hpp"
39 #include "code/codeCache.hpp"
40 #include "code/scopeDesc.hpp"
41 #include "compiler/compileBroker.hpp"
42 #include "compiler/compileLog.hpp"
43 #include "compiler/disassembler.hpp"
44 #include "gc/shared/collectedHeap.inline.hpp"
45 #include "interpreter/linkResolver.hpp"
46 #include "jfr/jfrEvents.hpp"
47 #include "logging/log.hpp"
48 #include "memory/allocation.inline.hpp"
49 #include "memory/oopFactory.hpp"
50 #include "memory/resourceArea.hpp"
51 #include "memory/universe.hpp"
52 #include "oops/constantPool.inline.hpp"
53 #include "oops/cpCache.inline.hpp"
54 #include "oops/method.inline.hpp"
55 #include "oops/methodData.hpp"
56 #include "oops/objArrayKlass.hpp"
57 #include "oops/objArrayOop.inline.hpp"
58 #include "oops/oop.inline.hpp"
59 #include "prims/jvmtiExport.hpp"
60 #include "runtime/handles.inline.hpp"
61 #include "runtime/init.hpp"
62 #include "runtime/reflection.hpp"
63 #include "runtime/jniHandles.inline.hpp"
64 #include "runtime/safepointVerifiers.hpp"
65 #include "runtime/sharedRuntime.hpp"
66 #include "runtime/thread.inline.hpp"
67 #include "utilities/dtrace.hpp"
68 #include "utilities/macros.hpp"
69 #ifdef COMPILER1
70 #include "c1/c1_Runtime1.hpp"
71 #endif
72 #ifdef COMPILER2
73 #include "opto/runtime.hpp"
74 #endif
75
76 // ciEnv
77 //
78 // This class is the top level broker for requests from the compiler
79 // to the VM.
80
81 ciObject* ciEnv::_null_object_instance;
82
83 #define WK_KLASS_DEFN(name, ignore_s) ciInstanceKlass* ciEnv::_##name = NULL;
84 WK_KLASSES_DO(WK_KLASS_DEFN)
85 #undef WK_KLASS_DEFN
86
87 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
88 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
89 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
90
91 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
92 jobject ciEnv::_ArrayStoreException_handle = NULL;
93 jobject ciEnv::_ClassCastException_handle = NULL;
94
95 #ifndef PRODUCT
96 static bool firstEnv = true;
97 #endif /* PRODUCT */
98
99 // ------------------------------------------------------------------
100 // ciEnv::ciEnv
101 ciEnv::ciEnv(CompileTask* task)
102 : _ciEnv_arena(mtCompiler) {
103 VM_ENTRY_MARK;
104
105 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
106 thread->set_env(this);
107 assert(ciEnv::current() == this, "sanity");
108
109 _oop_recorder = NULL;
110 _debug_info = NULL;
111 _dependencies = NULL;
112 _failure_reason = NULL;
113 _inc_decompile_count_on_failure = true;
114 _compilable = MethodCompilable;
115 _break_at_compile = false;
116 _compiler_data = NULL;
117 #ifndef PRODUCT
118 assert(!firstEnv, "not initialized properly");
119 #endif /* !PRODUCT */
120
121 _num_inlined_bytecodes = 0;
122 assert(task == NULL || thread->task() == task, "sanity");
123 if (task != NULL) {
124 task->mark_started(os::elapsed_counter());
125 }
126 _task = task;
127 _log = NULL;
128
129 // Temporary buffer for creating symbols and such.
130 _name_buffer = NULL;
131 _name_buffer_len = 0;
132
133 _arena = &_ciEnv_arena;
134 _factory = new (_arena) ciObjectFactory(_arena, 128);
135
136 // Preload commonly referenced system ciObjects.
137
138 // During VM initialization, these instances have not yet been created.
139 // Assertions ensure that these instances are not accessed before
140 // their initialization.
141
142 assert(Universe::is_fully_initialized(), "should be complete");
143
144 oop o = Universe::null_ptr_exception_instance();
145 assert(o != NULL, "should have been initialized");
146 _NullPointerException_instance = get_object(o)->as_instance();
147 o = Universe::arithmetic_exception_instance();
148 assert(o != NULL, "should have been initialized");
149 _ArithmeticException_instance = get_object(o)->as_instance();
150
151 _ArrayIndexOutOfBoundsException_instance = NULL;
152 _ArrayStoreException_instance = NULL;
153 _ClassCastException_instance = NULL;
154 _the_null_string = NULL;
155 _the_min_jint_string = NULL;
156
157 _jvmti_redefinition_count = 0;
158 _jvmti_can_hotswap_or_post_breakpoint = false;
159 _jvmti_can_access_local_variables = false;
160 _jvmti_can_post_on_exceptions = false;
161 _jvmti_can_pop_frame = false;
162 }
163
164 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
165 ASSERT_IN_VM;
166
167 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
168 CompilerThread* current_thread = CompilerThread::current();
169 assert(current_thread->env() == NULL, "must be");
170 current_thread->set_env(this);
171 assert(ciEnv::current() == this, "sanity");
172
173 _oop_recorder = NULL;
174 _debug_info = NULL;
175 _dependencies = NULL;
176 _failure_reason = NULL;
177 _inc_decompile_count_on_failure = true;
178 _compilable = MethodCompilable_never;
179 _break_at_compile = false;
180 _compiler_data = NULL;
181 #ifndef PRODUCT
182 assert(firstEnv, "must be first");
183 firstEnv = false;
184 #endif /* !PRODUCT */
185
186 _num_inlined_bytecodes = 0;
187 _task = NULL;
188 _log = NULL;
189
190 // Temporary buffer for creating symbols and such.
191 _name_buffer = NULL;
192 _name_buffer_len = 0;
193
194 _arena = arena;
195 _factory = new (_arena) ciObjectFactory(_arena, 128);
196
197 // Preload commonly referenced system ciObjects.
198
199 // During VM initialization, these instances have not yet been created.
200 // Assertions ensure that these instances are not accessed before
201 // their initialization.
202
203 assert(Universe::is_fully_initialized(), "must be");
204
205 _NullPointerException_instance = NULL;
206 _ArithmeticException_instance = NULL;
207 _ArrayIndexOutOfBoundsException_instance = NULL;
208 _ArrayStoreException_instance = NULL;
209 _ClassCastException_instance = NULL;
210 _the_null_string = NULL;
211 _the_min_jint_string = NULL;
212
213 _jvmti_redefinition_count = 0;
214 _jvmti_can_hotswap_or_post_breakpoint = false;
215 _jvmti_can_access_local_variables = false;
216 _jvmti_can_post_on_exceptions = false;
217 _jvmti_can_pop_frame = false;
218 }
219
220 ciEnv::~ciEnv() {
221 GUARDED_VM_ENTRY(
222 CompilerThread* current_thread = CompilerThread::current();
223 _factory->remove_symbols();
224 // Need safepoint to clear the env on the thread. RedefineClasses might
225 // be reading it.
226 current_thread->set_env(NULL);
227 )
228 }
229
230 // ------------------------------------------------------------------
231 // Cache Jvmti state
232 void ciEnv::cache_jvmti_state() {
233 VM_ENTRY_MARK;
234 // Get Jvmti capabilities under lock to get consistant values.
235 MutexLocker mu(JvmtiThreadState_lock);
236 _jvmti_redefinition_count = JvmtiExport::redefinition_count();
237 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
238 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
239 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
240 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
241 }
242
243 bool ciEnv::jvmti_state_changed() const {
244 // Some classes were redefined
245 if (_jvmti_redefinition_count != JvmtiExport::redefinition_count()) {
246 return true;
247 }
248
249 if (!_jvmti_can_access_local_variables &&
250 JvmtiExport::can_access_local_variables()) {
251 return true;
252 }
253 if (!_jvmti_can_hotswap_or_post_breakpoint &&
254 JvmtiExport::can_hotswap_or_post_breakpoint()) {
255 return true;
256 }
257 if (!_jvmti_can_post_on_exceptions &&
258 JvmtiExport::can_post_on_exceptions()) {
259 return true;
260 }
261 if (!_jvmti_can_pop_frame &&
262 JvmtiExport::can_pop_frame()) {
263 return true;
264 }
265
266 return false;
267 }
268
269 // ------------------------------------------------------------------
270 // Cache DTrace flags
271 void ciEnv::cache_dtrace_flags() {
272 // Need lock?
273 _dtrace_extended_probes = ExtendedDTraceProbes;
274 if (_dtrace_extended_probes) {
275 _dtrace_monitor_probes = true;
276 _dtrace_method_probes = true;
277 _dtrace_alloc_probes = true;
278 } else {
279 _dtrace_monitor_probes = DTraceMonitorProbes;
280 _dtrace_method_probes = DTraceMethodProbes;
281 _dtrace_alloc_probes = DTraceAllocProbes;
282 }
283 }
284
285 // ------------------------------------------------------------------
286 // helper for lazy exception creation
287 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
288 VM_ENTRY_MARK;
289 if (handle == NULL) {
290 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
291 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
292 jobject objh = NULL;
293 if (!HAS_PENDING_EXCEPTION && k != NULL) {
294 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
295 if (!HAS_PENDING_EXCEPTION)
296 objh = JNIHandles::make_global(Handle(THREAD, obj));
297 }
298 if (HAS_PENDING_EXCEPTION) {
299 CLEAR_PENDING_EXCEPTION;
300 } else {
301 handle = objh;
302 }
303 }
304 oop obj = JNIHandles::resolve(handle);
305 return obj == NULL? NULL: get_object(obj)->as_instance();
306 }
307
308 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
309 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
310 _ArrayIndexOutOfBoundsException_instance
311 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
312 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
313 }
314 return _ArrayIndexOutOfBoundsException_instance;
315 }
316 ciInstance* ciEnv::ArrayStoreException_instance() {
317 if (_ArrayStoreException_instance == NULL) {
318 _ArrayStoreException_instance
319 = get_or_create_exception(_ArrayStoreException_handle,
320 vmSymbols::java_lang_ArrayStoreException());
321 }
322 return _ArrayStoreException_instance;
323 }
324 ciInstance* ciEnv::ClassCastException_instance() {
325 if (_ClassCastException_instance == NULL) {
326 _ClassCastException_instance
327 = get_or_create_exception(_ClassCastException_handle,
328 vmSymbols::java_lang_ClassCastException());
329 }
330 return _ClassCastException_instance;
331 }
332
333 ciInstance* ciEnv::the_null_string() {
334 if (_the_null_string == NULL) {
335 VM_ENTRY_MARK;
336 _the_null_string = get_object(Universe::the_null_string())->as_instance();
337 }
338 return _the_null_string;
339 }
340
341 ciInstance* ciEnv::the_min_jint_string() {
342 if (_the_min_jint_string == NULL) {
343 VM_ENTRY_MARK;
344 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
345 }
346 return _the_min_jint_string;
347 }
348
349 // ------------------------------------------------------------------
350 // ciEnv::get_method_from_handle
351 ciMethod* ciEnv::get_method_from_handle(Method* method) {
352 VM_ENTRY_MARK;
353 return get_metadata(method)->as_method();
354 }
355
356 // ------------------------------------------------------------------
357 // ciEnv::array_element_offset_in_bytes
358 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
359 VM_ENTRY_MARK;
360 objArrayOop a = (objArrayOop)a_h->get_oop();
361 assert(a->is_objArray(), "");
362 int length = a->length();
363 oop o = o_h->get_oop();
364 for (int i = 0; i < length; i++) {
365 if (a->obj_at(i) == o) return i;
366 }
367 return -1;
368 }
369
370
371 // ------------------------------------------------------------------
372 // ciEnv::check_klass_accessiblity
373 //
374 // Note: the logic of this method should mirror the logic of
375 // ConstantPool::verify_constant_pool_resolve.
376 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
377 Klass* resolved_klass) {
378 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
379 return true;
380 }
381 if (accessing_klass->is_obj_array_klass()) {
382 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
383 }
384 if (!accessing_klass->is_instance_klass()) {
385 return true;
386 }
387
388 if (resolved_klass->is_objArray_klass()) {
389 // Find the element klass, if this is an array.
390 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
391 }
392 if (resolved_klass->is_instance_klass()) {
393 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
394 InstanceKlass::cast(resolved_klass),
395 true) == Reflection::ACCESS_OK);
396 }
397 return true;
398 }
399
400 // ------------------------------------------------------------------
401 // ciEnv::get_klass_by_name_impl
402 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
403 const constantPoolHandle& cpool,
404 ciSymbol* name,
405 bool require_local) {
406 ASSERT_IN_VM;
407 EXCEPTION_CONTEXT;
408
409 // Now we need to check the SystemDictionary
410 Symbol* sym = name->get_symbol();
411 if (sym->char_at(0) == 'L' &&
412 sym->char_at(sym->utf8_length()-1) == ';') {
413 // This is a name from a signature. Strip off the trimmings.
414 // Call recursive to keep scope of strippedsym.
415 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
416 sym->utf8_length()-2);
417 ciSymbol* strippedname = get_symbol(strippedsym);
418 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
419 }
420
421 // Check for prior unloaded klass. The SystemDictionary's answers
422 // can vary over time but the compiler needs consistency.
423 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
424 if (unloaded_klass != NULL) {
425 if (require_local) return NULL;
426 return unloaded_klass;
427 }
428
429 Handle loader(THREAD, (oop)NULL);
430 Handle domain(THREAD, (oop)NULL);
431 if (accessing_klass != NULL) {
432 loader = Handle(THREAD, accessing_klass->loader());
433 domain = Handle(THREAD, accessing_klass->protection_domain());
434 }
435
436 // setup up the proper type to return on OOM
437 ciKlass* fail_type;
438 if (sym->char_at(0) == '[') {
439 fail_type = _unloaded_ciobjarrayklass;
440 } else {
441 fail_type = _unloaded_ciinstance_klass;
442 }
443 Klass* found_klass;
444 {
445 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
446 MutexLocker ml(Compile_lock);
447 Klass* kls;
448 if (!require_local) {
449 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
450 KILL_COMPILE_ON_FATAL_(fail_type));
451 } else {
452 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
453 KILL_COMPILE_ON_FATAL_(fail_type));
454 }
455 found_klass = kls;
456 }
457
458 // If we fail to find an array klass, look again for its element type.
459 // The element type may be available either locally or via constraints.
460 // In either case, if we can find the element type in the system dictionary,
461 // we must build an array type around it. The CI requires array klasses
462 // to be loaded if their element klasses are loaded, except when memory
463 // is exhausted.
464 if (sym->char_at(0) == '[' &&
465 (sym->char_at(1) == '[' || sym->char_at(1) == 'L')) {
466 // We have an unloaded array.
467 // Build it on the fly if the element class exists.
468 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
469 sym->utf8_length()-1);
470
471 // Get element ciKlass recursively.
472 ciKlass* elem_klass =
473 get_klass_by_name_impl(accessing_klass,
474 cpool,
475 get_symbol(elem_sym),
476 require_local);
477 if (elem_klass != NULL && elem_klass->is_loaded()) {
478 // Now make an array for it
479 return ciObjArrayKlass::make_impl(elem_klass);
480 }
481 }
482
483 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
484 // Look inside the constant pool for pre-resolved class entries.
485 for (int i = cpool->length() - 1; i >= 1; i--) {
486 if (cpool->tag_at(i).is_klass()) {
487 Klass* kls = cpool->resolved_klass_at(i);
488 if (kls->name() == sym) {
489 found_klass = kls;
490 break;
491 }
492 }
493 }
494 }
495
496 if (found_klass != NULL) {
497 // Found it. Build a CI handle.
498 return get_klass(found_klass);
499 }
500
501 if (require_local) return NULL;
502
503 // Not yet loaded into the VM, or not governed by loader constraints.
504 // Make a CI representative for it.
505 return get_unloaded_klass(accessing_klass, name);
506 }
507
508 // ------------------------------------------------------------------
509 // ciEnv::get_klass_by_name
510 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
511 ciSymbol* klass_name,
512 bool require_local) {
513 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
514 constantPoolHandle(),
515 klass_name,
516 require_local);)
517 }
518
519 // ------------------------------------------------------------------
520 // ciEnv::get_klass_by_index_impl
521 //
522 // Implementation of get_klass_by_index.
523 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
524 int index,
525 bool& is_accessible,
526 ciInstanceKlass* accessor) {
527 EXCEPTION_CONTEXT;
528 Klass* klass = NULL;
529 Symbol* klass_name = NULL;
530
531 if (cpool->tag_at(index).is_symbol()) {
532 klass_name = cpool->symbol_at(index);
533 } else {
534 // Check if it's resolved if it's not a symbol constant pool entry.
535 klass = ConstantPool::klass_at_if_loaded(cpool, index);
536 // Try to look it up by name.
537 if (klass == NULL) {
538 klass_name = cpool->klass_name_at(index);
539 }
540 }
541
542 if (klass == NULL) {
543 // Not found in constant pool. Use the name to do the lookup.
544 ciKlass* k = get_klass_by_name_impl(accessor,
545 cpool,
546 get_symbol(klass_name),
547 false);
548 // Calculate accessibility the hard way.
549 if (!k->is_loaded()) {
550 is_accessible = false;
551 } else if (k->loader() != accessor->loader() &&
552 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
553 // Loaded only remotely. Not linked yet.
554 is_accessible = false;
555 } else {
556 // Linked locally, and we must also check public/private, etc.
557 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
558 }
559 return k;
560 }
561
562 // Check for prior unloaded klass. The SystemDictionary's answers
563 // can vary over time but the compiler needs consistency.
564 ciSymbol* name = get_symbol(klass->name());
565 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
566 if (unloaded_klass != NULL) {
567 is_accessible = false;
568 return unloaded_klass;
569 }
570
571 // It is known to be accessible, since it was found in the constant pool.
572 is_accessible = true;
573 return get_klass(klass);
574 }
575
576 // ------------------------------------------------------------------
577 // ciEnv::get_klass_by_index
578 //
579 // Get a klass from the constant pool.
580 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
581 int index,
582 bool& is_accessible,
583 ciInstanceKlass* accessor) {
584 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
585 }
586
587 // ------------------------------------------------------------------
588 // ciEnv::get_constant_by_index_impl
589 //
590 // Implementation of get_constant_by_index().
591 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
592 int pool_index, int cache_index,
593 ciInstanceKlass* accessor) {
594 bool ignore_will_link;
595 EXCEPTION_CONTEXT;
596 int index = pool_index;
597 if (cache_index >= 0) {
598 assert(index < 0, "only one kind of index at a time");
599 index = cpool->object_to_cp_index(cache_index);
600 oop obj = cpool->resolved_references()->obj_at(cache_index);
601 if (obj != NULL) {
602 if (obj == Universe::the_null_sentinel()) {
603 return ciConstant(T_OBJECT, get_object(NULL));
604 }
605 BasicType bt = T_OBJECT;
606 if (cpool->tag_at(index).is_dynamic_constant())
607 bt = FieldType::basic_type(cpool->uncached_signature_ref_at(index));
608 if (is_reference_type(bt)) {
609 } else {
610 // we have to unbox the primitive value
611 if (!is_java_primitive(bt)) return ciConstant();
612 jvalue value;
613 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
614 assert(bt2 == bt, "");
615 switch (bt2) {
616 case T_DOUBLE: return ciConstant(value.d);
617 case T_FLOAT: return ciConstant(value.f);
618 case T_LONG: return ciConstant(value.j);
619 case T_INT: return ciConstant(bt2, value.i);
620 case T_SHORT: return ciConstant(bt2, value.s);
621 case T_BYTE: return ciConstant(bt2, value.b);
622 case T_CHAR: return ciConstant(bt2, value.c);
623 case T_BOOLEAN: return ciConstant(bt2, value.z);
624 default: return ciConstant();
625 }
626 }
627 ciObject* ciobj = get_object(obj);
628 if (ciobj->is_array()) {
629 return ciConstant(T_ARRAY, ciobj);
630 } else {
631 assert(ciobj->is_instance(), "should be an instance");
632 return ciConstant(T_OBJECT, ciobj);
633 }
634 }
635 }
636 constantTag tag = cpool->tag_at(index);
637 if (tag.is_int()) {
638 return ciConstant(T_INT, (jint)cpool->int_at(index));
639 } else if (tag.is_long()) {
640 return ciConstant((jlong)cpool->long_at(index));
641 } else if (tag.is_float()) {
642 return ciConstant((jfloat)cpool->float_at(index));
643 } else if (tag.is_double()) {
644 return ciConstant((jdouble)cpool->double_at(index));
645 } else if (tag.is_string()) {
646 oop string = NULL;
647 assert(cache_index >= 0, "should have a cache index");
648 if (cpool->is_pseudo_string_at(index)) {
649 string = cpool->pseudo_string_at(index, cache_index);
650 } else {
651 string = cpool->string_at(index, cache_index, THREAD);
652 if (HAS_PENDING_EXCEPTION) {
653 CLEAR_PENDING_EXCEPTION;
654 record_out_of_memory_failure();
655 return ciConstant();
656 }
657 }
658 ciObject* constant = get_object(string);
659 if (constant->is_array()) {
660 return ciConstant(T_ARRAY, constant);
661 } else {
662 assert (constant->is_instance(), "must be an instance, or not? ");
663 return ciConstant(T_OBJECT, constant);
664 }
665 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
666 // 4881222: allow ldc to take a class type
667 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
668 if (HAS_PENDING_EXCEPTION) {
669 CLEAR_PENDING_EXCEPTION;
670 record_out_of_memory_failure();
671 return ciConstant();
672 }
673 assert (klass->is_instance_klass() || klass->is_array_klass(),
674 "must be an instance or array klass ");
675 return ciConstant(T_OBJECT, klass->java_mirror());
676 } else if (tag.is_method_type()) {
677 // must execute Java code to link this CP entry into cache[i].f1
678 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
679 ciObject* ciobj = get_unloaded_method_type_constant(signature);
680 return ciConstant(T_OBJECT, ciobj);
681 } else if (tag.is_method_handle()) {
682 // must execute Java code to link this CP entry into cache[i].f1
683 int ref_kind = cpool->method_handle_ref_kind_at(index);
684 int callee_index = cpool->method_handle_klass_index_at(index);
685 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
686 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
687 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
688 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
689 return ciConstant(T_OBJECT, ciobj);
690 } else if (tag.is_dynamic_constant()) {
691 return ciConstant();
692 } else {
693 ShouldNotReachHere();
694 return ciConstant();
695 }
696 }
697
698 // ------------------------------------------------------------------
699 // ciEnv::get_constant_by_index
700 //
701 // Pull a constant out of the constant pool. How appropriate.
702 //
703 // Implementation note: this query is currently in no way cached.
704 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
705 int pool_index, int cache_index,
706 ciInstanceKlass* accessor) {
707 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
708 }
709
710 // ------------------------------------------------------------------
711 // ciEnv::get_field_by_index_impl
712 //
713 // Implementation of get_field_by_index.
714 //
715 // Implementation note: the results of field lookups are cached
716 // in the accessor klass.
717 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
718 int index) {
719 ciConstantPoolCache* cache = accessor->field_cache();
720 if (cache == NULL) {
721 ciField* field = new (arena()) ciField(accessor, index);
722 return field;
723 } else {
724 ciField* field = (ciField*)cache->get(index);
725 if (field == NULL) {
726 field = new (arena()) ciField(accessor, index);
727 cache->insert(index, field);
728 }
729 return field;
730 }
731 }
732
733 // ------------------------------------------------------------------
734 // ciEnv::get_field_by_index
735 //
736 // Get a field by index from a klass's constant pool.
737 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
738 int index) {
739 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
740 }
741
742 // ------------------------------------------------------------------
743 // ciEnv::lookup_method
744 //
745 // Perform an appropriate method lookup based on accessor, holder,
746 // name, signature, and bytecode.
747 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
748 ciKlass* holder,
749 Symbol* name,
750 Symbol* sig,
751 Bytecodes::Code bc,
752 constantTag tag) {
753 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
754 assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible");
755
756 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
757 Klass* holder_klass = holder->get_Klass();
758 methodHandle dest_method;
759 LinkInfo link_info(holder_klass, name, sig, accessor_klass, LinkInfo::needs_access_check, tag);
760 switch (bc) {
761 case Bytecodes::_invokestatic:
762 dest_method =
763 LinkResolver::resolve_static_call_or_null(link_info);
764 break;
765 case Bytecodes::_invokespecial:
766 dest_method =
767 LinkResolver::resolve_special_call_or_null(link_info);
768 break;
769 case Bytecodes::_invokeinterface:
770 dest_method =
771 LinkResolver::linktime_resolve_interface_method_or_null(link_info);
772 break;
773 case Bytecodes::_invokevirtual:
774 dest_method =
775 LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
776 break;
777 default: ShouldNotReachHere();
778 }
779
780 return dest_method();
781 }
782
783
784 // ------------------------------------------------------------------
785 // ciEnv::get_method_by_index_impl
786 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
787 int index, Bytecodes::Code bc,
788 ciInstanceKlass* accessor) {
789 if (bc == Bytecodes::_invokedynamic) {
790 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
791 bool is_resolved = !cpce->is_f1_null();
792 // FIXME: code generation could allow for null (unlinked) call site
793 // The call site could be made patchable as follows:
794 // Load the appendix argument from the constant pool.
795 // Test the appendix argument and jump to a known deopt routine if it is null.
796 // Jump through a patchable call site, which is initially a deopt routine.
797 // Patch the call site to the nmethod entry point of the static compiled lambda form.
798 // As with other two-component call sites, both values must be independently verified.
799
800 if (is_resolved) {
801 // Get the invoker Method* from the constant pool.
802 // (The appendix argument, if any, will be noted in the method's signature.)
803 Method* adapter = cpce->f1_as_method();
804 return get_method(adapter);
805 }
806
807 // Fake a method that is equivalent to a declared method.
808 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
809 ciSymbol* name = ciSymbol::invokeBasic_name();
810 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
811 return get_unloaded_method(holder, name, signature, accessor);
812 } else {
813 const int holder_index = cpool->klass_ref_index_at(index);
814 bool holder_is_accessible;
815 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
816
817 // Get the method's name and signature.
818 Symbol* name_sym = cpool->name_ref_at(index);
819 Symbol* sig_sym = cpool->signature_ref_at(index);
820
821 if (cpool->has_preresolution()
822 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
823 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
824 // Short-circuit lookups for JSR 292-related call sites.
825 // That is, do not rely only on name-based lookups, because they may fail
826 // if the names are not resolvable in the boot class loader (7056328).
827 switch (bc) {
828 case Bytecodes::_invokevirtual:
829 case Bytecodes::_invokeinterface:
830 case Bytecodes::_invokespecial:
831 case Bytecodes::_invokestatic:
832 {
833 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
834 if (m != NULL) {
835 return get_method(m);
836 }
837 }
838 break;
839 default:
840 break;
841 }
842 }
843
844 if (holder_is_accessible) { // Our declared holder is loaded.
845 constantTag tag = cpool->tag_ref_at(index);
846 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
847 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
848 if (m != NULL &&
849 (bc == Bytecodes::_invokestatic
850 ? m->method_holder()->is_not_initialized()
851 : !m->method_holder()->is_loaded())) {
852 m = NULL;
853 }
854 #ifdef ASSERT
855 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
856 m = NULL;
857 }
858 #endif
859 if (m != NULL) {
860 // We found the method.
861 return get_method(m);
862 }
863 }
864
865 // Either the declared holder was not loaded, or the method could
866 // not be found. Create a dummy ciMethod to represent the failed
867 // lookup.
868 ciSymbol* name = get_symbol(name_sym);
869 ciSymbol* signature = get_symbol(sig_sym);
870 return get_unloaded_method(holder, name, signature, accessor);
871 }
872 }
873
874
875 // ------------------------------------------------------------------
876 // ciEnv::get_instance_klass_for_declared_method_holder
877 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
878 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
879 // instead of a ciInstanceKlass. For that case simply pretend that the
880 // declared holder is Object.clone since that's where the call will bottom out.
881 // A more correct fix would trickle out through many interfaces in CI,
882 // requiring ciInstanceKlass* to become ciKlass* and many more places would
883 // require checks to make sure the expected type was found. Given that this
884 // only occurs for clone() the more extensive fix seems like overkill so
885 // instead we simply smear the array type into Object.
886 guarantee(method_holder != NULL, "no method holder");
887 if (method_holder->is_instance_klass()) {
888 return method_holder->as_instance_klass();
889 } else if (method_holder->is_array_klass()) {
890 return current()->Object_klass();
891 } else {
892 ShouldNotReachHere();
893 }
894 return NULL;
895 }
896
897
898 // ------------------------------------------------------------------
899 // ciEnv::get_method_by_index
900 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
901 int index, Bytecodes::Code bc,
902 ciInstanceKlass* accessor) {
903 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
904 }
905
906
907 // ------------------------------------------------------------------
908 // ciEnv::name_buffer
909 char *ciEnv::name_buffer(int req_len) {
910 if (_name_buffer_len < req_len) {
911 if (_name_buffer == NULL) {
912 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
913 _name_buffer_len = req_len;
914 } else {
915 _name_buffer =
916 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
917 _name_buffer_len = req_len;
918 }
919 }
920 return _name_buffer;
921 }
922
923 // ------------------------------------------------------------------
924 // ciEnv::is_in_vm
925 bool ciEnv::is_in_vm() {
926 return JavaThread::current()->thread_state() == _thread_in_vm;
927 }
928
929 // ------------------------------------------------------------------
930 // ciEnv::validate_compile_task_dependencies
931 //
932 // Check for changes during compilation (e.g. class loads, evolution,
933 // breakpoints, call site invalidation).
934 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
935 if (failing()) return; // no need for further checks
936
937 Dependencies::DepType result = dependencies()->validate_dependencies(_task);
938 if (result != Dependencies::end_marker) {
939 if (result == Dependencies::call_site_target_value) {
940 _inc_decompile_count_on_failure = false;
941 record_failure("call site target change");
942 } else if (Dependencies::is_klass_type(result)) {
943 record_failure("concurrent class loading");
944 } else {
945 record_failure("invalid non-klass dependency");
946 }
947 }
948 }
949
950 // ------------------------------------------------------------------
951 // ciEnv::register_method
952 void ciEnv::register_method(ciMethod* target,
953 int entry_bci,
954 CodeOffsets* offsets,
955 int orig_pc_offset,
956 CodeBuffer* code_buffer,
957 int frame_words,
958 OopMapSet* oop_map_set,
959 ExceptionHandlerTable* handler_table,
960 ImplicitExceptionTable* inc_table,
961 AbstractCompiler* compiler,
962 bool has_unsafe_access,
963 bool has_wide_vectors,
964 RTMState rtm_state) {
965 VM_ENTRY_MARK;
966 nmethod* nm = NULL;
967 {
968 // To prevent compile queue updates.
969 MutexLocker locker(MethodCompileQueue_lock, THREAD);
970
971 // Prevent SystemDictionary::add_to_hierarchy from running
972 // and invalidating our dependencies until we install this method.
973 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
974 MutexLocker ml(Compile_lock);
975 NoSafepointVerifier nsv;
976
977 // Change in Jvmti state may invalidate compilation.
978 if (!failing() && jvmti_state_changed()) {
979 record_failure("Jvmti state change invalidated dependencies");
980 }
981
982 // Change in DTrace flags may invalidate compilation.
983 if (!failing() &&
984 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
985 (!dtrace_method_probes() && DTraceMethodProbes) ||
986 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
987 record_failure("DTrace flags change invalidated dependencies");
988 }
989
990 if (!failing() && target->needs_clinit_barrier() &&
991 target->holder()->is_in_error_state()) {
992 record_failure("method holder is in error state");
993 }
994
995 if (!failing()) {
996 if (log() != NULL) {
997 // Log the dependencies which this compilation declares.
998 dependencies()->log_all_dependencies();
999 }
1000
1001 // Encode the dependencies now, so we can check them right away.
1002 dependencies()->encode_content_bytes();
1003
1004 // Check for {class loads, evolution, breakpoints, ...} during compilation
1005 validate_compile_task_dependencies(target);
1006 }
1007
1008 methodHandle method(THREAD, target->get_Method());
1009
1010 #if INCLUDE_RTM_OPT
1011 if (!failing() && (rtm_state != NoRTM) &&
1012 (method()->method_data() != NULL) &&
1013 (method()->method_data()->rtm_state() != rtm_state)) {
1014 // Preemptive decompile if rtm state was changed.
1015 record_failure("RTM state change invalidated rtm code");
1016 }
1017 #endif
1018
1019 if (failing()) {
1020 // While not a true deoptimization, it is a preemptive decompile.
1021 MethodData* mdo = method()->method_data();
1022 if (mdo != NULL && _inc_decompile_count_on_failure) {
1023 mdo->inc_decompile_count();
1024 }
1025
1026 // All buffers in the CodeBuffer are allocated in the CodeCache.
1027 // If the code buffer is created on each compile attempt
1028 // as in C2, then it must be freed.
1029 code_buffer->free_blob();
1030 return;
1031 }
1032
1033 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1034 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1035
1036 nm = nmethod::new_nmethod(method,
1037 compile_id(),
1038 entry_bci,
1039 offsets,
1040 orig_pc_offset,
1041 debug_info(), dependencies(), code_buffer,
1042 frame_words, oop_map_set,
1043 handler_table, inc_table,
1044 compiler, task()->comp_level());
1045
1046 // Free codeBlobs
1047 code_buffer->free_blob();
1048
1049 if (nm != NULL) {
1050 nm->set_has_unsafe_access(has_unsafe_access);
1051 nm->set_has_wide_vectors(has_wide_vectors);
1052 #if INCLUDE_RTM_OPT
1053 nm->set_rtm_state(rtm_state);
1054 #endif
1055
1056 // Record successful registration.
1057 // (Put nm into the task handle *before* publishing to the Java heap.)
1058 if (task() != NULL) {
1059 task()->set_code(nm);
1060 }
1061
1062 if (entry_bci == InvocationEntryBci) {
1063 if (TieredCompilation) {
1064 // If there is an old version we're done with it
1065 CompiledMethod* old = method->code();
1066 if (TraceMethodReplacement && old != NULL) {
1067 ResourceMark rm;
1068 char *method_name = method->name_and_sig_as_C_string();
1069 tty->print_cr("Replacing method %s", method_name);
1070 }
1071 if (old != NULL) {
1072 old->make_not_used();
1073 }
1074 }
1075
1076 LogTarget(Info, nmethod, install) lt;
1077 if (lt.is_enabled()) {
1078 ResourceMark rm;
1079 char *method_name = method->name_and_sig_as_C_string();
1080 lt.print("Installing method (%d) %s ",
1081 task()->comp_level(), method_name);
1082 }
1083 // Allow the code to be executed
1084 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
1085 if (nm->make_in_use()) {
1086 method->set_code(method, nm);
1087 }
1088 } else {
1089 LogTarget(Info, nmethod, install) lt;
1090 if (lt.is_enabled()) {
1091 ResourceMark rm;
1092 char *method_name = method->name_and_sig_as_C_string();
1093 lt.print("Installing osr method (%d) %s @ %d",
1094 task()->comp_level(), method_name, entry_bci);
1095 }
1096 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
1097 if (nm->make_in_use()) {
1098 method->method_holder()->add_osr_nmethod(nm);
1099 }
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 EventCompilationFailure event;
1158 if (event.should_commit()) {
1159 event.set_compileId(compile_id());
1160 event.set_failureMessage(reason);
1161 event.commit();
1162 }
1163 }
1164
1165 // ------------------------------------------------------------------
1166 // ciEnv::record_method_not_compilable()
1167 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1168 int new_compilable =
1169 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1170
1171 // Only note transitions to a worse state
1172 if (new_compilable > _compilable) {
1173 if (log() != NULL) {
1174 if (all_tiers) {
1175 log()->elem("method_not_compilable");
1176 } else {
1177 log()->elem("method_not_compilable_at_tier level='%d'",
1178 current()->task()->comp_level());
1179 }
1180 }
1181 _compilable = new_compilable;
1182
1183 // Reset failure reason; this one is more important.
1184 _failure_reason = NULL;
1185 record_failure(reason);
1186 }
1187 }
1188
1189 // ------------------------------------------------------------------
1190 // ciEnv::record_out_of_memory_failure()
1191 void ciEnv::record_out_of_memory_failure() {
1192 // If memory is low, we stop compiling methods.
1193 record_method_not_compilable("out of memory");
1194 }
1195
1196 ciInstance* ciEnv::unloaded_ciinstance() {
1197 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1198 }
1199
1200 // ------------------------------------------------------------------
1201 // ciEnv::dump_replay_data*
1202
1203 // Don't change thread state and acquire any locks.
1204 // Safe to call from VM error reporter.
1205
1206 void ciEnv::dump_compile_data(outputStream* out) {
1207 CompileTask* task = this->task();
1208 if (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)) {
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)) {
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
1234 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1235 ResourceMark rm;
1236 #if INCLUDE_JVMTI
1237 out->print_cr("JvmtiExport redefinition_count %d", _jvmti_redefinition_count);
1238 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1239 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1240 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1241 #endif // INCLUDE_JVMTI
1242
1243 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1244 out->print_cr("# %d ciObject found", objects->length());
1245 for (int i = 0; i < objects->length(); i++) {
1246 objects->at(i)->dump_replay_data(out);
1247 }
1248 dump_compile_data(out);
1249 out->flush();
1250 }
1251
1252 void ciEnv::dump_replay_data(outputStream* out) {
1253 GUARDED_VM_ENTRY(
1254 MutexLocker ml(Compile_lock);
1255 dump_replay_data_unsafe(out);
1256 )
1257 }
1258
1259 void ciEnv::dump_replay_data(int compile_id) {
1260 static char buffer[O_BUFLEN];
1261 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1262 if (ret > 0) {
1263 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1264 if (fd != -1) {
1265 FILE* replay_data_file = os::open(fd, "w");
1266 if (replay_data_file != NULL) {
1267 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1268 dump_replay_data(&replay_data_stream);
1269 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1270 } else {
1271 tty->print_cr("# Can't open file to dump replay data.");
1272 }
1273 }
1274 }
1275 }
1276
1277 void ciEnv::dump_inline_data(int compile_id) {
1278 static char buffer[O_BUFLEN];
1279 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1280 if (ret > 0) {
1281 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1282 if (fd != -1) {
1283 FILE* inline_data_file = os::open(fd, "w");
1284 if (inline_data_file != NULL) {
1285 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1286 GUARDED_VM_ENTRY(
1287 MutexLocker ml(Compile_lock);
1288 dump_compile_data(&replay_data_stream);
1289 )
1290 replay_data_stream.flush();
1291 tty->print("# Compiler inline data is saved as: ");
1292 tty->print_cr("%s", buffer);
1293 } else {
1294 tty->print_cr("# Can't open file to dump inline data.");
1295 }
1296 }
1297 }
1298 }