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 "ci/ciValueKlass.hpp"
37 #include "classfile/symbolTable.hpp"
38 #include "classfile/systemDictionary.hpp"
39 #include "classfile/vmSymbols.hpp"
40 #include "code/codeCache.hpp"
41 #include "code/scopeDesc.hpp"
42 #include "compiler/compileBroker.hpp"
43 #include "compiler/compileLog.hpp"
44 #include "compiler/disassembler.hpp"
45 #include "gc/shared/collectedHeap.inline.hpp"
46 #include "interpreter/linkResolver.hpp"
47 #include "jfr/jfrEvents.hpp"
48 #include "logging/log.hpp"
49 #include "memory/allocation.inline.hpp"
50 #include "memory/oopFactory.hpp"
51 #include "memory/resourceArea.hpp"
52 #include "memory/universe.hpp"
53 #include "oops/constantPool.inline.hpp"
54 #include "oops/cpCache.inline.hpp"
55 #include "oops/method.inline.hpp"
56 #include "oops/methodData.hpp"
57 #include "oops/objArrayKlass.hpp"
58 #include "oops/objArrayOop.inline.hpp"
59 #include "oops/oop.inline.hpp"
60 #include "prims/jvmtiExport.hpp"
61 #include "runtime/handles.inline.hpp"
62 #include "runtime/init.hpp"
63 #include "runtime/reflection.hpp"
64 #include "runtime/jniHandles.inline.hpp"
65 #include "runtime/safepointVerifiers.hpp"
66 #include "runtime/sharedRuntime.hpp"
67 #include "runtime/thread.inline.hpp"
68 #include "utilities/dtrace.hpp"
69 #include "utilities/macros.hpp"
70 #ifdef COMPILER1
71 #include "c1/c1_Runtime1.hpp"
72 #endif
73 #ifdef COMPILER2
74 #include "opto/runtime.hpp"
75 #endif
76
77 // ciEnv
78 //
79 // This class is the top level broker for requests from the compiler
80 // to the VM.
81
82 ciObject* ciEnv::_null_object_instance;
83
84 #define WK_KLASS_DEFN(name, ignore_s) ciInstanceKlass* ciEnv::_##name = NULL;
85 WK_KLASSES_DO(WK_KLASS_DEFN)
86 #undef WK_KLASS_DEFN
87
88 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
89 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
90 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
91
92 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
93 jobject ciEnv::_ArrayStoreException_handle = NULL;
94 jobject ciEnv::_ClassCastException_handle = NULL;
95
96 #ifndef PRODUCT
97 static bool firstEnv = true;
98 #endif /* PRODUCT */
99
100 // ------------------------------------------------------------------
101 // ciEnv::ciEnv
102 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter)
103 : _ciEnv_arena(mtCompiler) {
104 VM_ENTRY_MARK;
105
106 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
107 thread->set_env(this);
108 assert(ciEnv::current() == this, "sanity");
109
110 _oop_recorder = NULL;
111 _debug_info = NULL;
112 _dependencies = NULL;
113 _failure_reason = NULL;
114 _inc_decompile_count_on_failure = true;
115 _compilable = MethodCompilable;
116 _break_at_compile = false;
117 _compiler_data = NULL;
118 #ifndef PRODUCT
119 assert(!firstEnv, "not initialized properly");
120 #endif /* !PRODUCT */
121
122 _system_dictionary_modification_counter = system_dictionary_modification_counter;
123 _num_inlined_bytecodes = 0;
124 assert(task == NULL || thread->task() == task, "sanity");
125 if (task != NULL) {
126 task->mark_started(os::elapsed_counter());
127 }
128 _task = task;
129 _log = NULL;
130
131 // Temporary buffer for creating symbols and such.
132 _name_buffer = NULL;
133 _name_buffer_len = 0;
134
135 _arena = &_ciEnv_arena;
136 _factory = new (_arena) ciObjectFactory(_arena, 128);
137
138 // Preload commonly referenced system ciObjects.
139
140 // During VM initialization, these instances have not yet been created.
141 // Assertions ensure that these instances are not accessed before
142 // their initialization.
143
144 assert(Universe::is_fully_initialized(), "should be complete");
145
146 oop o = Universe::null_ptr_exception_instance();
147 assert(o != NULL, "should have been initialized");
148 _NullPointerException_instance = get_object(o)->as_instance();
149 o = Universe::arithmetic_exception_instance();
150 assert(o != NULL, "should have been initialized");
151 _ArithmeticException_instance = get_object(o)->as_instance();
152
153 _ArrayIndexOutOfBoundsException_instance = NULL;
154 _ArrayStoreException_instance = NULL;
155 _ClassCastException_instance = NULL;
156 _the_null_string = NULL;
157 _the_min_jint_string = NULL;
158
159 _jvmti_can_hotswap_or_post_breakpoint = false;
160 _jvmti_can_access_local_variables = false;
161 _jvmti_can_post_on_exceptions = false;
162 _jvmti_can_pop_frame = false;
163 }
164
165 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
166 ASSERT_IN_VM;
167
168 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
169 CompilerThread* current_thread = CompilerThread::current();
170 assert(current_thread->env() == NULL, "must be");
171 current_thread->set_env(this);
172 assert(ciEnv::current() == this, "sanity");
173
174 _oop_recorder = NULL;
175 _debug_info = NULL;
176 _dependencies = NULL;
177 _failure_reason = NULL;
178 _inc_decompile_count_on_failure = true;
179 _compilable = MethodCompilable_never;
180 _break_at_compile = false;
181 _compiler_data = NULL;
182 #ifndef PRODUCT
183 assert(firstEnv, "must be first");
184 firstEnv = false;
185 #endif /* !PRODUCT */
186
187 _system_dictionary_modification_counter = 0;
188 _num_inlined_bytecodes = 0;
189 _task = NULL;
190 _log = NULL;
191
192 // Temporary buffer for creating symbols and such.
193 _name_buffer = NULL;
194 _name_buffer_len = 0;
195
196 _arena = arena;
197 _factory = new (_arena) ciObjectFactory(_arena, 128);
198
199 // Preload commonly referenced system ciObjects.
200
201 // During VM initialization, these instances have not yet been created.
202 // Assertions ensure that these instances are not accessed before
203 // their initialization.
204
205 assert(Universe::is_fully_initialized(), "must be");
206
207 _NullPointerException_instance = NULL;
208 _ArithmeticException_instance = NULL;
209 _ArrayIndexOutOfBoundsException_instance = NULL;
210 _ArrayStoreException_instance = NULL;
211 _ClassCastException_instance = NULL;
212 _the_null_string = NULL;
213 _the_min_jint_string = NULL;
214
215 _jvmti_can_hotswap_or_post_breakpoint = false;
216 _jvmti_can_access_local_variables = false;
217 _jvmti_can_post_on_exceptions = false;
218 _jvmti_can_pop_frame = false;
219 }
220
221 ciEnv::~ciEnv() {
222 GUARDED_VM_ENTRY(
223 CompilerThread* current_thread = CompilerThread::current();
224 _factory->remove_symbols();
225 // Need safepoint to clear the env on the thread. RedefineClasses might
226 // be reading it.
227 current_thread->set_env(NULL);
228 )
229 }
230
231 // ------------------------------------------------------------------
232 // Cache Jvmti state
233 void ciEnv::cache_jvmti_state() {
234 VM_ENTRY_MARK;
235 // Get Jvmti capabilities under lock to get consistant values.
236 MutexLocker mu(JvmtiThreadState_lock);
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 if (!_jvmti_can_access_local_variables &&
245 JvmtiExport::can_access_local_variables()) {
246 return true;
247 }
248 if (!_jvmti_can_hotswap_or_post_breakpoint &&
249 JvmtiExport::can_hotswap_or_post_breakpoint()) {
250 return true;
251 }
252 if (!_jvmti_can_post_on_exceptions &&
253 JvmtiExport::can_post_on_exceptions()) {
254 return true;
255 }
256 if (!_jvmti_can_pop_frame &&
257 JvmtiExport::can_pop_frame()) {
258 return true;
259 }
260 return false;
261 }
262
263 // ------------------------------------------------------------------
264 // Cache DTrace flags
265 void ciEnv::cache_dtrace_flags() {
266 // Need lock?
267 _dtrace_extended_probes = ExtendedDTraceProbes;
268 if (_dtrace_extended_probes) {
269 _dtrace_monitor_probes = true;
270 _dtrace_method_probes = true;
271 _dtrace_alloc_probes = true;
272 } else {
273 _dtrace_monitor_probes = DTraceMonitorProbes;
274 _dtrace_method_probes = DTraceMethodProbes;
275 _dtrace_alloc_probes = DTraceAllocProbes;
276 }
277 }
278
279 // ------------------------------------------------------------------
280 // helper for lazy exception creation
281 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
282 VM_ENTRY_MARK;
283 if (handle == NULL) {
284 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
285 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
286 jobject objh = NULL;
287 if (!HAS_PENDING_EXCEPTION && k != NULL) {
288 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
289 if (!HAS_PENDING_EXCEPTION)
290 objh = JNIHandles::make_global(Handle(THREAD, obj));
291 }
292 if (HAS_PENDING_EXCEPTION) {
293 CLEAR_PENDING_EXCEPTION;
294 } else {
295 handle = objh;
296 }
297 }
298 oop obj = JNIHandles::resolve(handle);
299 return obj == NULL? NULL: get_object(obj)->as_instance();
300 }
301
302 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
303 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
304 _ArrayIndexOutOfBoundsException_instance
305 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
306 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
307 }
308 return _ArrayIndexOutOfBoundsException_instance;
309 }
310 ciInstance* ciEnv::ArrayStoreException_instance() {
311 if (_ArrayStoreException_instance == NULL) {
312 _ArrayStoreException_instance
313 = get_or_create_exception(_ArrayStoreException_handle,
314 vmSymbols::java_lang_ArrayStoreException());
315 }
316 return _ArrayStoreException_instance;
317 }
318 ciInstance* ciEnv::ClassCastException_instance() {
319 if (_ClassCastException_instance == NULL) {
320 _ClassCastException_instance
321 = get_or_create_exception(_ClassCastException_handle,
322 vmSymbols::java_lang_ClassCastException());
323 }
324 return _ClassCastException_instance;
325 }
326
327 ciInstance* ciEnv::the_null_string() {
328 if (_the_null_string == NULL) {
329 VM_ENTRY_MARK;
330 _the_null_string = get_object(Universe::the_null_string())->as_instance();
331 }
332 return _the_null_string;
333 }
334
335 ciInstance* ciEnv::the_min_jint_string() {
336 if (_the_min_jint_string == NULL) {
337 VM_ENTRY_MARK;
338 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
339 }
340 return _the_min_jint_string;
341 }
342
343 // ------------------------------------------------------------------
344 // ciEnv::get_method_from_handle
345 ciMethod* ciEnv::get_method_from_handle(Method* method) {
346 VM_ENTRY_MARK;
347 return get_metadata(method)->as_method();
348 }
349
350 // ------------------------------------------------------------------
351 // ciEnv::array_element_offset_in_bytes
352 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
353 VM_ENTRY_MARK;
354 objArrayOop a = (objArrayOop)a_h->get_oop();
355 assert(a->is_objArray(), "");
356 int length = a->length();
357 oop o = o_h->get_oop();
358 for (int i = 0; i < length; i++) {
359 if (a->obj_at(i) == o) return i;
360 }
361 return -1;
362 }
363
364
365 // ------------------------------------------------------------------
366 // ciEnv::check_klass_accessiblity
367 //
368 // Note: the logic of this method should mirror the logic of
369 // ConstantPool::verify_constant_pool_resolve.
370 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
371 Klass* resolved_klass) {
372 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
373 return true;
374 }
375 if (accessing_klass->is_obj_array_klass()) {
376 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
377 }
378 if (!accessing_klass->is_instance_klass()) {
379 return true;
380 }
381
382 if (resolved_klass->is_objArray_klass()) {
383 // Find the element klass, if this is an array.
384 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
385 }
386 if (resolved_klass->is_instance_klass()) {
387 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
388 InstanceKlass::cast(resolved_klass),
389 true) == Reflection::ACCESS_OK);
390 }
391 return true;
392 }
393
394 // ------------------------------------------------------------------
395 // ciEnv::get_klass_by_name_impl
396 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
397 const constantPoolHandle& cpool,
398 ciSymbol* name,
399 bool require_local) {
400 ASSERT_IN_VM;
401 EXCEPTION_CONTEXT;
402
403 // Now we need to check the SystemDictionary
404 Symbol* sym = name->get_symbol();
405 if ((sym->starts_with('L') || sym->starts_with('Q')) &&
406 sym->ends_with(';')) {
407 // This is a name from a signature. Strip off the trimmings.
408 // Call recursive to keep scope of strippedsym.
409 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
410 sym->utf8_length()-2);
411 ciSymbol* strippedname = get_symbol(strippedsym);
412 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
413 }
414
415 // Check for prior unloaded klass. The SystemDictionary's answers
416 // can vary over time but the compiler needs consistency.
417 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
418 if (unloaded_klass != NULL) {
419 if (require_local) return NULL;
420 return unloaded_klass;
421 }
422
423 Handle loader(THREAD, (oop)NULL);
424 Handle domain(THREAD, (oop)NULL);
425 if (accessing_klass != NULL) {
426 loader = Handle(THREAD, accessing_klass->loader());
427 domain = Handle(THREAD, accessing_klass->protection_domain());
428 }
429
430 // setup up the proper type to return on OOM
431 ciKlass* fail_type;
432 if (sym->char_at(0) == '[') {
433 fail_type = _unloaded_ciobjarrayklass;
434 } else {
435 fail_type = _unloaded_ciinstance_klass;
436 }
437 Klass* found_klass;
438 {
439 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
440 MutexLocker ml(Compile_lock);
441 Klass* kls;
442 if (!require_local) {
443 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
444 KILL_COMPILE_ON_FATAL_(fail_type));
445 } else {
446 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
447 KILL_COMPILE_ON_FATAL_(fail_type));
448 }
449 found_klass = kls;
450 }
451
452 // If we fail to find an array klass, look again for its element type.
453 // The element type may be available either locally or via constraints.
454 // In either case, if we can find the element type in the system dictionary,
455 // we must build an array type around it. The CI requires array klasses
456 // to be loaded if their element klasses are loaded, except when memory
457 // is exhausted.
458 if (sym->char_at(0) == '[' &&
459 (sym->char_at(1) == '[' || sym->char_at(1) == 'L' || sym->char_at(1) == 'Q')) {
460 // We have an unloaded array.
461 // Build it on the fly if the element class exists.
462 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
463 sym->utf8_length()-1);
464
465 // Get element ciKlass recursively.
466 ciKlass* elem_klass =
467 get_klass_by_name_impl(accessing_klass,
468 cpool,
469 get_symbol(elem_sym),
470 require_local);
471 if (elem_klass != NULL && elem_klass->is_loaded()) {
472 // Now make an array for it
473 return ciArrayKlass::make(elem_klass, sym->char_at(1) == 'Q');
474 }
475 }
476
477 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
478 // Look inside the constant pool for pre-resolved class entries.
479 for (int i = cpool->length() - 1; i >= 1; i--) {
480 if (cpool->tag_at(i).is_klass()) {
481 Klass* kls = cpool->resolved_klass_at(i);
482 if (kls->name() == sym) {
483 found_klass = kls;
484 break;
485 }
486 }
487 }
488 }
489
490 if (found_klass != NULL) {
491 // Found it. Build a CI handle.
492 return get_klass(found_klass);
493 }
494
495 if (require_local) return NULL;
496
497 // Not yet loaded into the VM, or not governed by loader constraints.
498 // Make a CI representative for it.
499 int i = 0;
500 while (sym->char_at(i) == '[') {
501 i++;
502 }
503 if (i > 0 && sym->char_at(i) == 'Q') {
504 // An unloaded array class of value types is an ObjArrayKlass, an
505 // unloaded value type class is an InstanceKlass. For consistency,
506 // make the signature of the unloaded array of value type use L
507 // rather than Q.
508 char *new_name = CURRENT_THREAD_ENV->name_buffer(sym->utf8_length()+1);
509 strncpy(new_name, (char*)sym->base(), sym->utf8_length());
510 new_name[i] = 'L';
511 new_name[sym->utf8_length()] = '\0';
512 return get_unloaded_klass(accessing_klass, ciSymbol::make(new_name));
513 }
514 return get_unloaded_klass(accessing_klass, name);
515 }
516
517 // ------------------------------------------------------------------
518 // ciEnv::get_klass_by_name
519 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
520 ciSymbol* klass_name,
521 bool require_local) {
522 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
523 constantPoolHandle(),
524 klass_name,
525 require_local);)
526 }
527
528 // ------------------------------------------------------------------
529 // ciEnv::get_klass_by_index_impl
530 //
531 // Implementation of get_klass_by_index.
532 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
533 int index,
534 bool& is_accessible,
535 ciInstanceKlass* accessor) {
536 EXCEPTION_CONTEXT;
537 Klass* klass = NULL;
538 Symbol* klass_name = NULL;
539
540 if (cpool->tag_at(index).is_symbol()) {
541 klass_name = cpool->symbol_at(index);
542 } else {
543 // Check if it's resolved if it's not a symbol constant pool entry.
544 klass = ConstantPool::klass_at_if_loaded(cpool, index);
545 // Try to look it up by name.
546 if (klass == NULL) {
547 klass_name = cpool->klass_name_at(index);
548 }
549 }
550
551 if (klass == NULL) {
552 // Not found in constant pool. Use the name to do the lookup.
553 ciKlass* k = get_klass_by_name_impl(accessor,
554 cpool,
555 get_symbol(klass_name),
556 false);
557 // Calculate accessibility the hard way.
558 if (!k->is_loaded()) {
559 is_accessible = false;
560 } else if (!oopDesc::equals(k->loader(), accessor->loader()) &&
561 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
562 // Loaded only remotely. Not linked yet.
563 is_accessible = false;
564 } else {
565 // Linked locally, and we must also check public/private, etc.
566 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
567 }
568 return k;
569 }
570
571 // Check for prior unloaded klass. The SystemDictionary's answers
572 // can vary over time but the compiler needs consistency.
573 ciSymbol* name = get_symbol(klass->name());
574 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
575 if (unloaded_klass != NULL) {
576 is_accessible = false;
577 return unloaded_klass;
578 }
579
580 // It is known to be accessible, since it was found in the constant pool.
581 is_accessible = true;
582 return get_klass(klass);
583 }
584
585 // ------------------------------------------------------------------
586 // ciEnv::get_klass_by_index
587 //
588 // Get a klass from the constant pool.
589 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
590 int index,
591 bool& is_accessible,
592 ciInstanceKlass* accessor) {
593 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
594 }
595
596 // ------------------------------------------------------------------
597 // ciEnv::is_klass_never_null
598 //
599 // Get information about nullability from the constant pool.
600 bool ciEnv::is_klass_never_null(const constantPoolHandle& cpool, int index) {
601 GUARDED_VM_ENTRY(return cpool->klass_name_at(index)->is_Q_signature();)
602 }
603
604 // ------------------------------------------------------------------
605 // ciEnv::get_constant_by_index_impl
606 //
607 // Implementation of get_constant_by_index().
608 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
609 int pool_index, int cache_index,
610 ciInstanceKlass* accessor) {
611 bool ignore_will_link;
612 EXCEPTION_CONTEXT;
613 int index = pool_index;
614 if (cache_index >= 0) {
615 assert(index < 0, "only one kind of index at a time");
616 index = cpool->object_to_cp_index(cache_index);
617 oop obj = cpool->resolved_references()->obj_at(cache_index);
618 if (obj != NULL) {
619 if (oopDesc::equals(obj, Universe::the_null_sentinel())) {
620 return ciConstant(T_OBJECT, get_object(NULL));
621 }
622 BasicType bt = T_OBJECT;
623 if (cpool->tag_at(index).is_dynamic_constant())
624 bt = FieldType::basic_type(cpool->uncached_signature_ref_at(index));
625 if (is_reference_type(bt)) {
626 } else {
627 // we have to unbox the primitive value
628 if (!is_java_primitive(bt)) return ciConstant();
629 jvalue value;
630 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
631 assert(bt2 == bt, "");
632 switch (bt2) {
633 case T_DOUBLE: return ciConstant(value.d);
634 case T_FLOAT: return ciConstant(value.f);
635 case T_LONG: return ciConstant(value.j);
636 case T_INT: return ciConstant(bt2, value.i);
637 case T_SHORT: return ciConstant(bt2, value.s);
638 case T_BYTE: return ciConstant(bt2, value.b);
639 case T_CHAR: return ciConstant(bt2, value.c);
640 case T_BOOLEAN: return ciConstant(bt2, value.z);
641 default: return ciConstant();
642 }
643 }
644 ciObject* ciobj = get_object(obj);
645 if (ciobj->is_array()) {
646 return ciConstant(T_ARRAY, ciobj);
647 } else {
648 assert(ciobj->is_instance(), "should be an instance");
649 return ciConstant(T_OBJECT, ciobj);
650 }
651 }
652 }
653 constantTag tag = cpool->tag_at(index);
654 if (tag.is_int()) {
655 return ciConstant(T_INT, (jint)cpool->int_at(index));
656 } else if (tag.is_long()) {
657 return ciConstant((jlong)cpool->long_at(index));
658 } else if (tag.is_float()) {
659 return ciConstant((jfloat)cpool->float_at(index));
660 } else if (tag.is_double()) {
661 return ciConstant((jdouble)cpool->double_at(index));
662 } else if (tag.is_string()) {
663 oop string = NULL;
664 assert(cache_index >= 0, "should have a cache index");
665 if (cpool->is_pseudo_string_at(index)) {
666 string = cpool->pseudo_string_at(index, cache_index);
667 } else {
668 string = cpool->string_at(index, cache_index, THREAD);
669 if (HAS_PENDING_EXCEPTION) {
670 CLEAR_PENDING_EXCEPTION;
671 record_out_of_memory_failure();
672 return ciConstant();
673 }
674 }
675 ciObject* constant = get_object(string);
676 if (constant->is_array()) {
677 return ciConstant(T_ARRAY, constant);
678 } else {
679 assert (constant->is_instance(), "must be an instance, or not? ");
680 return ciConstant(T_OBJECT, constant);
681 }
682 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
683 // 4881222: allow ldc to take a class type
684 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
685 if (HAS_PENDING_EXCEPTION) {
686 CLEAR_PENDING_EXCEPTION;
687 record_out_of_memory_failure();
688 return ciConstant();
689 }
690 assert (klass->is_instance_klass() || klass->is_array_klass(),
691 "must be an instance or array klass ");
692 return ciConstant(T_OBJECT, klass->java_mirror());
693 } else if (tag.is_method_type()) {
694 // must execute Java code to link this CP entry into cache[i].f1
695 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
696 ciObject* ciobj = get_unloaded_method_type_constant(signature);
697 return ciConstant(T_OBJECT, ciobj);
698 } else if (tag.is_method_handle()) {
699 // must execute Java code to link this CP entry into cache[i].f1
700 int ref_kind = cpool->method_handle_ref_kind_at(index);
701 int callee_index = cpool->method_handle_klass_index_at(index);
702 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
703 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
704 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
705 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
706 return ciConstant(T_OBJECT, ciobj);
707 } else if (tag.is_dynamic_constant()) {
708 return ciConstant();
709 } else {
710 ShouldNotReachHere();
711 return ciConstant();
712 }
713 }
714
715 // ------------------------------------------------------------------
716 // ciEnv::get_constant_by_index
717 //
718 // Pull a constant out of the constant pool. How appropriate.
719 //
720 // Implementation note: this query is currently in no way cached.
721 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
722 int pool_index, int cache_index,
723 ciInstanceKlass* accessor) {
724 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
725 }
726
727 // ------------------------------------------------------------------
728 // ciEnv::get_field_by_index_impl
729 //
730 // Implementation of get_field_by_index.
731 //
732 // Implementation note: the results of field lookups are cached
733 // in the accessor klass.
734 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
735 int index) {
736 ciConstantPoolCache* cache = accessor->field_cache();
737 if (cache == NULL) {
738 ciField* field = new (arena()) ciField(accessor, index);
739 return field;
740 } else {
741 ciField* field = (ciField*)cache->get(index);
742 if (field == NULL) {
743 field = new (arena()) ciField(accessor, index);
744 cache->insert(index, field);
745 }
746 return field;
747 }
748 }
749
750 // ------------------------------------------------------------------
751 // ciEnv::get_field_by_index
752 //
753 // Get a field by index from a klass's constant pool.
754 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
755 int index) {
756 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
757 }
758
759 // ------------------------------------------------------------------
760 // ciEnv::lookup_method
761 //
762 // Perform an appropriate method lookup based on accessor, holder,
763 // name, signature, and bytecode.
764 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
765 ciKlass* holder,
766 Symbol* name,
767 Symbol* sig,
768 Bytecodes::Code bc,
769 constantTag tag) {
770 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
771 assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible");
772
773 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
774 Klass* holder_klass = holder->get_Klass();
775 methodHandle dest_method;
776 LinkInfo link_info(holder_klass, name, sig, accessor_klass, LinkInfo::needs_access_check, tag);
777 switch (bc) {
778 case Bytecodes::_invokestatic:
779 dest_method =
780 LinkResolver::resolve_static_call_or_null(link_info);
781 break;
782 case Bytecodes::_invokespecial:
783 dest_method =
784 LinkResolver::resolve_special_call_or_null(link_info);
785 break;
786 case Bytecodes::_invokeinterface:
787 dest_method =
788 LinkResolver::linktime_resolve_interface_method_or_null(link_info);
789 break;
790 case Bytecodes::_invokevirtual:
791 dest_method =
792 LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
793 break;
794 default: ShouldNotReachHere();
795 }
796
797 return dest_method();
798 }
799
800
801 // ------------------------------------------------------------------
802 // ciEnv::get_method_by_index_impl
803 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
804 int index, Bytecodes::Code bc,
805 ciInstanceKlass* accessor) {
806 if (bc == Bytecodes::_invokedynamic) {
807 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
808 bool is_resolved = !cpce->is_f1_null();
809 // FIXME: code generation could allow for null (unlinked) call site
810 // The call site could be made patchable as follows:
811 // Load the appendix argument from the constant pool.
812 // Test the appendix argument and jump to a known deopt routine if it is null.
813 // Jump through a patchable call site, which is initially a deopt routine.
814 // Patch the call site to the nmethod entry point of the static compiled lambda form.
815 // As with other two-component call sites, both values must be independently verified.
816
817 if (is_resolved) {
818 // Get the invoker Method* from the constant pool.
819 // (The appendix argument, if any, will be noted in the method's signature.)
820 Method* adapter = cpce->f1_as_method();
821 return get_method(adapter);
822 }
823
824 // Fake a method that is equivalent to a declared method.
825 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
826 ciSymbol* name = ciSymbol::invokeBasic_name();
827 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
828 return get_unloaded_method(holder, name, signature, accessor);
829 } else {
830 const int holder_index = cpool->klass_ref_index_at(index);
831 bool holder_is_accessible;
832 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
833
834 // Get the method's name and signature.
835 Symbol* name_sym = cpool->name_ref_at(index);
836 Symbol* sig_sym = cpool->signature_ref_at(index);
837
838 if (cpool->has_preresolution()
839 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
840 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
841 // Short-circuit lookups for JSR 292-related call sites.
842 // That is, do not rely only on name-based lookups, because they may fail
843 // if the names are not resolvable in the boot class loader (7056328).
844 switch (bc) {
845 case Bytecodes::_invokevirtual:
846 case Bytecodes::_invokeinterface:
847 case Bytecodes::_invokespecial:
848 case Bytecodes::_invokestatic:
849 {
850 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
851 if (m != NULL) {
852 return get_method(m);
853 }
854 }
855 break;
856 default:
857 break;
858 }
859 }
860
861 if (holder_is_accessible) { // Our declared holder is loaded.
862 constantTag tag = cpool->tag_ref_at(index);
863 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
864 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
865 if (m != NULL &&
866 (bc == Bytecodes::_invokestatic
867 ? m->method_holder()->is_not_initialized()
868 : !m->method_holder()->is_loaded())) {
869 m = NULL;
870 }
871 #ifdef ASSERT
872 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
873 m = NULL;
874 }
875 #endif
876 if (m != NULL) {
877 // We found the method.
878 return get_method(m);
879 }
880 }
881
882 // Either the declared holder was not loaded, or the method could
883 // not be found. Create a dummy ciMethod to represent the failed
884 // lookup.
885 ciSymbol* name = get_symbol(name_sym);
886 ciSymbol* signature = get_symbol(sig_sym);
887 return get_unloaded_method(holder, name, signature, accessor);
888 }
889 }
890
891
892 // ------------------------------------------------------------------
893 // ciEnv::get_instance_klass_for_declared_method_holder
894 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
895 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
896 // instead of a ciInstanceKlass. For that case simply pretend that the
897 // declared holder is Object.clone since that's where the call will bottom out.
898 // A more correct fix would trickle out through many interfaces in CI,
899 // requiring ciInstanceKlass* to become ciKlass* and many more places would
900 // require checks to make sure the expected type was found. Given that this
901 // only occurs for clone() the more extensive fix seems like overkill so
902 // instead we simply smear the array type into Object.
903 guarantee(method_holder != NULL, "no method holder");
904 if (method_holder->is_instance_klass()) {
905 return method_holder->as_instance_klass();
906 } else if (method_holder->is_array_klass()) {
907 return current()->Object_klass();
908 } else {
909 ShouldNotReachHere();
910 }
911 return NULL;
912 }
913
914
915 // ------------------------------------------------------------------
916 // ciEnv::get_method_by_index
917 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
918 int index, Bytecodes::Code bc,
919 ciInstanceKlass* accessor) {
920 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
921 }
922
923
924 // ------------------------------------------------------------------
925 // ciEnv::name_buffer
926 char *ciEnv::name_buffer(int req_len) {
927 if (_name_buffer_len < req_len) {
928 if (_name_buffer == NULL) {
929 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
930 _name_buffer_len = req_len;
931 } else {
932 _name_buffer =
933 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
934 _name_buffer_len = req_len;
935 }
936 }
937 return _name_buffer;
938 }
939
940 // ------------------------------------------------------------------
941 // ciEnv::is_in_vm
942 bool ciEnv::is_in_vm() {
943 return JavaThread::current()->thread_state() == _thread_in_vm;
944 }
945
946 bool ciEnv::system_dictionary_modification_counter_changed_locked() {
947 assert_locked_or_safepoint(Compile_lock);
948 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
949 }
950
951 bool ciEnv::system_dictionary_modification_counter_changed() {
952 VM_ENTRY_MARK;
953 MutexLocker ml(Compile_lock, THREAD); // lock with safepoint check
954 return system_dictionary_modification_counter_changed_locked();
955 }
956
957 // ------------------------------------------------------------------
958 // ciEnv::validate_compile_task_dependencies
959 //
960 // Check for changes during compilation (e.g. class loads, evolution,
961 // breakpoints, call site invalidation).
962 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
963 if (failing()) return; // no need for further checks
964
965 bool counter_changed = system_dictionary_modification_counter_changed_locked();
966 Dependencies::DepType result = dependencies()->validate_dependencies(_task, counter_changed);
967 if (result != Dependencies::end_marker) {
968 if (result == Dependencies::call_site_target_value) {
969 _inc_decompile_count_on_failure = false;
970 record_failure("call site target change");
971 } else if (Dependencies::is_klass_type(result)) {
972 record_failure("concurrent class loading");
973 } else {
974 record_failure("invalid non-klass dependency");
975 }
976 }
977 }
978
979 // ------------------------------------------------------------------
980 // ciEnv::register_method
981 void ciEnv::register_method(ciMethod* target,
982 int entry_bci,
983 CodeOffsets* offsets,
984 int orig_pc_offset,
985 CodeBuffer* code_buffer,
986 int frame_words,
987 OopMapSet* oop_map_set,
988 ExceptionHandlerTable* handler_table,
989 ImplicitExceptionTable* inc_table,
990 AbstractCompiler* compiler,
991 bool has_unsafe_access,
992 bool has_wide_vectors,
993 RTMState rtm_state) {
994 VM_ENTRY_MARK;
995 nmethod* nm = NULL;
996 {
997 // To prevent compile queue updates.
998 MutexLocker locker(MethodCompileQueue_lock, THREAD);
999
1000 // Prevent SystemDictionary::add_to_hierarchy from running
1001 // and invalidating our dependencies until we install this method.
1002 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1003 MutexLocker ml(Compile_lock);
1004 NoSafepointVerifier nsv;
1005
1006 // Change in Jvmti state may invalidate compilation.
1007 if (!failing() && jvmti_state_changed()) {
1008 record_failure("Jvmti state change invalidated dependencies");
1009 }
1010
1011 // Change in DTrace flags may invalidate compilation.
1012 if (!failing() &&
1013 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
1014 (!dtrace_method_probes() && DTraceMethodProbes) ||
1015 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1016 record_failure("DTrace flags change invalidated dependencies");
1017 }
1018
1019 if (!failing() && target->needs_clinit_barrier() &&
1020 target->holder()->is_in_error_state()) {
1021 record_failure("method holder is in error state");
1022 }
1023
1024 if (!failing()) {
1025 if (log() != NULL) {
1026 // Log the dependencies which this compilation declares.
1027 dependencies()->log_all_dependencies();
1028 }
1029
1030 // Encode the dependencies now, so we can check them right away.
1031 dependencies()->encode_content_bytes();
1032
1033 // Check for {class loads, evolution, breakpoints, ...} during compilation
1034 validate_compile_task_dependencies(target);
1035 }
1036
1037 methodHandle method(THREAD, target->get_Method());
1038
1039 #if INCLUDE_RTM_OPT
1040 if (!failing() && (rtm_state != NoRTM) &&
1041 (method()->method_data() != NULL) &&
1042 (method()->method_data()->rtm_state() != rtm_state)) {
1043 // Preemptive decompile if rtm state was changed.
1044 record_failure("RTM state change invalidated rtm code");
1045 }
1046 #endif
1047
1048 if (failing()) {
1049 // While not a true deoptimization, it is a preemptive decompile.
1050 MethodData* mdo = method()->method_data();
1051 if (mdo != NULL && _inc_decompile_count_on_failure) {
1052 mdo->inc_decompile_count();
1053 }
1054
1055 // All buffers in the CodeBuffer are allocated in the CodeCache.
1056 // If the code buffer is created on each compile attempt
1057 // as in C2, then it must be freed.
1058 code_buffer->free_blob();
1059 return;
1060 }
1061
1062 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1063 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1064
1065 nm = nmethod::new_nmethod(method,
1066 compile_id(),
1067 entry_bci,
1068 offsets,
1069 orig_pc_offset,
1070 debug_info(), dependencies(), code_buffer,
1071 frame_words, oop_map_set,
1072 handler_table, inc_table,
1073 compiler, task()->comp_level());
1074
1075 // Free codeBlobs
1076 code_buffer->free_blob();
1077
1078 if (nm != NULL) {
1079 nm->set_has_unsafe_access(has_unsafe_access);
1080 nm->set_has_wide_vectors(has_wide_vectors);
1081 #if INCLUDE_RTM_OPT
1082 nm->set_rtm_state(rtm_state);
1083 #endif
1084
1085 // Record successful registration.
1086 // (Put nm into the task handle *before* publishing to the Java heap.)
1087 if (task() != NULL) {
1088 task()->set_code(nm);
1089 }
1090
1091 if (entry_bci == InvocationEntryBci) {
1092 if (TieredCompilation) {
1093 // If there is an old version we're done with it
1094 CompiledMethod* old = method->code();
1095 if (TraceMethodReplacement && old != NULL) {
1096 ResourceMark rm;
1097 char *method_name = method->name_and_sig_as_C_string();
1098 tty->print_cr("Replacing method %s", method_name);
1099 }
1100 if (old != NULL) {
1101 old->make_not_used();
1102 }
1103 }
1104
1105 LogTarget(Info, nmethod, install) lt;
1106 if (lt.is_enabled()) {
1107 ResourceMark rm;
1108 char *method_name = method->name_and_sig_as_C_string();
1109 lt.print("Installing method (%d) %s ",
1110 task()->comp_level(), method_name);
1111 }
1112 // Allow the code to be executed
1113 method->set_code(method, nm);
1114 } else {
1115 LogTarget(Info, nmethod, install) lt;
1116 if (lt.is_enabled()) {
1117 ResourceMark rm;
1118 char *method_name = method->name_and_sig_as_C_string();
1119 lt.print("Installing osr method (%d) %s @ %d",
1120 task()->comp_level(), method_name, entry_bci);
1121 }
1122 method->method_holder()->add_osr_nmethod(nm);
1123 }
1124 nm->make_in_use();
1125 }
1126 } // safepoints are allowed again
1127
1128 if (nm != NULL) {
1129 // JVMTI -- compiled method notification (must be done outside lock)
1130 nm->post_compiled_method_load_event();
1131 } else {
1132 // The CodeCache is full.
1133 record_failure("code cache is full");
1134 }
1135 }
1136
1137
1138 // ------------------------------------------------------------------
1139 // ciEnv::find_system_klass
1140 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1141 VM_ENTRY_MARK;
1142 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1143 }
1144
1145 // ------------------------------------------------------------------
1146 // ciEnv::comp_level
1147 int ciEnv::comp_level() {
1148 if (task() == NULL) return CompLevel_highest_tier;
1149 return task()->comp_level();
1150 }
1151
1152 // ------------------------------------------------------------------
1153 // ciEnv::compile_id
1154 uint ciEnv::compile_id() {
1155 if (task() == NULL) return 0;
1156 return task()->compile_id();
1157 }
1158
1159 // ------------------------------------------------------------------
1160 // ciEnv::notice_inlined_method()
1161 void ciEnv::notice_inlined_method(ciMethod* method) {
1162 _num_inlined_bytecodes += method->code_size_for_inlining();
1163 }
1164
1165 // ------------------------------------------------------------------
1166 // ciEnv::num_inlined_bytecodes()
1167 int ciEnv::num_inlined_bytecodes() const {
1168 return _num_inlined_bytecodes;
1169 }
1170
1171 // ------------------------------------------------------------------
1172 // ciEnv::record_failure()
1173 void ciEnv::record_failure(const char* reason) {
1174 if (_failure_reason == NULL) {
1175 // Record the first failure reason.
1176 _failure_reason = reason;
1177 }
1178 }
1179
1180 void ciEnv::report_failure(const char* reason) {
1181 EventCompilationFailure event;
1182 if (event.should_commit()) {
1183 event.set_compileId(compile_id());
1184 event.set_failureMessage(reason);
1185 event.commit();
1186 }
1187 }
1188
1189 // ------------------------------------------------------------------
1190 // ciEnv::record_method_not_compilable()
1191 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1192 int new_compilable =
1193 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1194
1195 // Only note transitions to a worse state
1196 if (new_compilable > _compilable) {
1197 if (log() != NULL) {
1198 if (all_tiers) {
1199 log()->elem("method_not_compilable");
1200 } else {
1201 log()->elem("method_not_compilable_at_tier level='%d'",
1202 current()->task()->comp_level());
1203 }
1204 }
1205 _compilable = new_compilable;
1206
1207 // Reset failure reason; this one is more important.
1208 _failure_reason = NULL;
1209 record_failure(reason);
1210 }
1211 }
1212
1213 // ------------------------------------------------------------------
1214 // ciEnv::record_out_of_memory_failure()
1215 void ciEnv::record_out_of_memory_failure() {
1216 // If memory is low, we stop compiling methods.
1217 record_method_not_compilable("out of memory");
1218 }
1219
1220 ciInstance* ciEnv::unloaded_ciinstance() {
1221 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1222 }
1223
1224 // ------------------------------------------------------------------
1225 // ciEnv::dump_replay_data*
1226
1227 // Don't change thread state and acquire any locks.
1228 // Safe to call from VM error reporter.
1229
1230 void ciEnv::dump_compile_data(outputStream* out) {
1231 CompileTask* task = this->task();
1232 if (task) {
1233 Method* method = task->method();
1234 int entry_bci = task->osr_bci();
1235 int comp_level = task->comp_level();
1236 out->print("compile %s %s %s %d %d",
1237 method->klass_name()->as_quoted_ascii(),
1238 method->name()->as_quoted_ascii(),
1239 method->signature()->as_quoted_ascii(),
1240 entry_bci, comp_level);
1241 if (compiler_data() != NULL) {
1242 if (is_c2_compile(comp_level)) {
1243 #ifdef COMPILER2
1244 // Dump C2 inlining data.
1245 ((Compile*)compiler_data())->dump_inline_data(out);
1246 #endif
1247 } else if (is_c1_compile(comp_level)) {
1248 #ifdef COMPILER1
1249 // Dump C1 inlining data.
1250 ((Compilation*)compiler_data())->dump_inline_data(out);
1251 #endif
1252 }
1253 }
1254 out->cr();
1255 }
1256 }
1257
1258 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1259 ResourceMark rm;
1260 #if INCLUDE_JVMTI
1261 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1262 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1263 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1264 #endif // INCLUDE_JVMTI
1265
1266 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1267 out->print_cr("# %d ciObject found", objects->length());
1268 for (int i = 0; i < objects->length(); i++) {
1269 objects->at(i)->dump_replay_data(out);
1270 }
1271 dump_compile_data(out);
1272 out->flush();
1273 }
1274
1275 void ciEnv::dump_replay_data(outputStream* out) {
1276 GUARDED_VM_ENTRY(
1277 MutexLocker ml(Compile_lock);
1278 dump_replay_data_unsafe(out);
1279 )
1280 }
1281
1282 void ciEnv::dump_replay_data(int compile_id) {
1283 static char buffer[O_BUFLEN];
1284 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1285 if (ret > 0) {
1286 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1287 if (fd != -1) {
1288 FILE* replay_data_file = os::open(fd, "w");
1289 if (replay_data_file != NULL) {
1290 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1291 dump_replay_data(&replay_data_stream);
1292 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1293 } else {
1294 tty->print_cr("# Can't open file to dump replay data.");
1295 }
1296 }
1297 }
1298 }
1299
1300 void ciEnv::dump_inline_data(int compile_id) {
1301 static char buffer[O_BUFLEN];
1302 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1303 if (ret > 0) {
1304 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1305 if (fd != -1) {
1306 FILE* inline_data_file = os::open(fd, "w");
1307 if (inline_data_file != NULL) {
1308 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1309 GUARDED_VM_ENTRY(
1310 MutexLocker ml(Compile_lock);
1311 dump_compile_data(&replay_data_stream);
1312 )
1313 replay_data_stream.flush();
1314 tty->print("# Compiler inline data is saved as: ");
1315 tty->print_cr("%s", buffer);
1316 } else {
1317 tty->print_cr("# Can't open file to dump inline data.");
1318 }
1319 }
1320 }
1321 }