1 /*
2 * Copyright (c) 1999, 2018, 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/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 "memory/allocation.inline.hpp"
48 #include "memory/oopFactory.hpp"
49 #include "memory/resourceArea.hpp"
50 #include "memory/universe.hpp"
51 #include "oops/constantPool.inline.hpp"
52 #include "oops/cpCache.inline.hpp"
53 #include "oops/method.inline.hpp"
54 #include "oops/methodData.hpp"
55 #include "oops/objArrayKlass.hpp"
56 #include "oops/objArrayOop.inline.hpp"
57 #include "oops/oop.inline.hpp"
58 #include "prims/jvmtiExport.hpp"
59 #include "runtime/init.hpp"
60 #include "runtime/reflection.hpp"
61 #include "runtime/jniHandles.inline.hpp"
62 #include "runtime/safepointVerifiers.hpp"
63 #include "runtime/sharedRuntime.hpp"
64 #include "runtime/thread.inline.hpp"
65 #include "utilities/dtrace.hpp"
66 #include "utilities/macros.hpp"
67 #ifdef COMPILER1
68 #include "c1/c1_Runtime1.hpp"
69 #endif
70 #ifdef COMPILER2
71 #include "opto/runtime.hpp"
72 #endif
73
74 // ciEnv
75 //
76 // This class is the top level broker for requests from the compiler
77 // to the VM.
78
79 ciObject* ciEnv::_null_object_instance;
80
81 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
82 WK_KLASSES_DO(WK_KLASS_DEFN)
83 #undef WK_KLASS_DEFN
84
85 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
86 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
87 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
88
89 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
90 jobject ciEnv::_ArrayStoreException_handle = NULL;
91 jobject ciEnv::_ClassCastException_handle = NULL;
92
93 #ifndef PRODUCT
94 static bool firstEnv = true;
95 #endif /* PRODUCT */
96
97 // ------------------------------------------------------------------
98 // ciEnv::ciEnv
99 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter)
100 : _ciEnv_arena(mtCompiler) {
101 VM_ENTRY_MARK;
102
103 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
104 thread->set_env(this);
105 assert(ciEnv::current() == this, "sanity");
106
107 _oop_recorder = NULL;
108 _debug_info = NULL;
109 _dependencies = NULL;
110 _failure_reason = NULL;
111 _inc_decompile_count_on_failure = true;
112 _compilable = MethodCompilable;
113 _break_at_compile = false;
114 _compiler_data = NULL;
115 #ifndef PRODUCT
116 assert(!firstEnv, "not initialized properly");
117 #endif /* !PRODUCT */
118
119 _system_dictionary_modification_counter = system_dictionary_modification_counter;
120 _num_inlined_bytecodes = 0;
121 assert(task == NULL || thread->task() == task, "sanity");
122 _task = task;
123 _log = NULL;
124
125 // Temporary buffer for creating symbols and such.
126 _name_buffer = NULL;
127 _name_buffer_len = 0;
128
129 _arena = &_ciEnv_arena;
130 _factory = new (_arena) ciObjectFactory(_arena, 128);
131
132 // Preload commonly referenced system ciObjects.
133
134 // During VM initialization, these instances have not yet been created.
135 // Assertions ensure that these instances are not accessed before
136 // their initialization.
137
138 assert(Universe::is_fully_initialized(), "should be complete");
139
140 oop o = Universe::null_ptr_exception_instance();
141 assert(o != NULL, "should have been initialized");
142 _NullPointerException_instance = get_object(o)->as_instance();
143 o = Universe::arithmetic_exception_instance();
144 assert(o != NULL, "should have been initialized");
145 _ArithmeticException_instance = get_object(o)->as_instance();
146
147 _ArrayIndexOutOfBoundsException_instance = NULL;
148 _ArrayStoreException_instance = NULL;
149 _ClassCastException_instance = NULL;
150 _the_null_string = NULL;
151 _the_min_jint_string = NULL;
152
153 _jvmti_can_hotswap_or_post_breakpoint = false;
154 _jvmti_can_access_local_variables = false;
155 _jvmti_can_post_on_exceptions = false;
156 _jvmti_can_pop_frame = false;
157 }
158
159 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
160 ASSERT_IN_VM;
161
162 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
163 CompilerThread* current_thread = CompilerThread::current();
164 assert(current_thread->env() == NULL, "must be");
165 current_thread->set_env(this);
166 assert(ciEnv::current() == this, "sanity");
167
168 _oop_recorder = NULL;
169 _debug_info = NULL;
170 _dependencies = NULL;
171 _failure_reason = NULL;
172 _inc_decompile_count_on_failure = true;
173 _compilable = MethodCompilable_never;
174 _break_at_compile = false;
175 _compiler_data = NULL;
176 #ifndef PRODUCT
177 assert(firstEnv, "must be first");
178 firstEnv = false;
179 #endif /* !PRODUCT */
180
181 _system_dictionary_modification_counter = 0;
182 _num_inlined_bytecodes = 0;
183 _task = NULL;
184 _log = NULL;
185
186 // Temporary buffer for creating symbols and such.
187 _name_buffer = NULL;
188 _name_buffer_len = 0;
189
190 _arena = arena;
191 _factory = new (_arena) ciObjectFactory(_arena, 128);
192
193 // Preload commonly referenced system ciObjects.
194
195 // During VM initialization, these instances have not yet been created.
196 // Assertions ensure that these instances are not accessed before
197 // their initialization.
198
199 assert(Universe::is_fully_initialized(), "must be");
200
201 _NullPointerException_instance = NULL;
202 _ArithmeticException_instance = NULL;
203 _ArrayIndexOutOfBoundsException_instance = NULL;
204 _ArrayStoreException_instance = NULL;
205 _ClassCastException_instance = NULL;
206 _the_null_string = NULL;
207 _the_min_jint_string = NULL;
208
209 _jvmti_can_hotswap_or_post_breakpoint = false;
210 _jvmti_can_access_local_variables = false;
211 _jvmti_can_post_on_exceptions = false;
212 _jvmti_can_pop_frame = false;
213 }
214
215 ciEnv::~ciEnv() {
216 GUARDED_VM_ENTRY(
217 CompilerThread* current_thread = CompilerThread::current();
218 _factory->remove_symbols();
219 // Need safepoint to clear the env on the thread. RedefineClasses might
220 // be reading it.
221 current_thread->set_env(NULL);
222 )
223 }
224
225 // ------------------------------------------------------------------
226 // Cache Jvmti state
227 void ciEnv::cache_jvmti_state() {
228 VM_ENTRY_MARK;
229 // Get Jvmti capabilities under lock to get consistant values.
230 MutexLocker mu(JvmtiThreadState_lock);
231 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
232 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
233 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
234 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
235 }
236
237 bool ciEnv::should_retain_local_variables() const {
238 return _jvmti_can_access_local_variables || _jvmti_can_pop_frame;
239 }
240
241 bool ciEnv::jvmti_state_changed() const {
242 if (!_jvmti_can_access_local_variables &&
243 JvmtiExport::can_access_local_variables()) {
244 return true;
245 }
246 if (!_jvmti_can_hotswap_or_post_breakpoint &&
247 JvmtiExport::can_hotswap_or_post_breakpoint()) {
248 return true;
249 }
250 if (!_jvmti_can_post_on_exceptions &&
251 JvmtiExport::can_post_on_exceptions()) {
252 return true;
253 }
254 if (!_jvmti_can_pop_frame &&
255 JvmtiExport::can_pop_frame()) {
256 return true;
257 }
258 return false;
259 }
260
261 // ------------------------------------------------------------------
262 // Cache DTrace flags
263 void ciEnv::cache_dtrace_flags() {
264 // Need lock?
265 _dtrace_extended_probes = ExtendedDTraceProbes;
266 if (_dtrace_extended_probes) {
267 _dtrace_monitor_probes = true;
268 _dtrace_method_probes = true;
269 _dtrace_alloc_probes = true;
270 } else {
271 _dtrace_monitor_probes = DTraceMonitorProbes;
272 _dtrace_method_probes = DTraceMethodProbes;
273 _dtrace_alloc_probes = DTraceAllocProbes;
274 }
275 }
276
277 // ------------------------------------------------------------------
278 // helper for lazy exception creation
279 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
280 VM_ENTRY_MARK;
281 if (handle == NULL) {
282 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
283 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
284 jobject objh = NULL;
285 if (!HAS_PENDING_EXCEPTION && k != NULL) {
286 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
287 if (!HAS_PENDING_EXCEPTION)
288 objh = JNIHandles::make_global(Handle(THREAD, obj));
289 }
290 if (HAS_PENDING_EXCEPTION) {
291 CLEAR_PENDING_EXCEPTION;
292 } else {
293 handle = objh;
294 }
295 }
296 oop obj = JNIHandles::resolve(handle);
297 return obj == NULL? NULL: get_object(obj)->as_instance();
298 }
299
300 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
301 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
302 _ArrayIndexOutOfBoundsException_instance
303 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
304 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
305 }
306 return _ArrayIndexOutOfBoundsException_instance;
307 }
308 ciInstance* ciEnv::ArrayStoreException_instance() {
309 if (_ArrayStoreException_instance == NULL) {
310 _ArrayStoreException_instance
311 = get_or_create_exception(_ArrayStoreException_handle,
312 vmSymbols::java_lang_ArrayStoreException());
313 }
314 return _ArrayStoreException_instance;
315 }
316 ciInstance* ciEnv::ClassCastException_instance() {
317 if (_ClassCastException_instance == NULL) {
318 _ClassCastException_instance
319 = get_or_create_exception(_ClassCastException_handle,
320 vmSymbols::java_lang_ClassCastException());
321 }
322 return _ClassCastException_instance;
323 }
324
325 ciInstance* ciEnv::the_null_string() {
326 if (_the_null_string == NULL) {
327 VM_ENTRY_MARK;
328 _the_null_string = get_object(Universe::the_null_string())->as_instance();
329 }
330 return _the_null_string;
331 }
332
333 ciInstance* ciEnv::the_min_jint_string() {
334 if (_the_min_jint_string == NULL) {
335 VM_ENTRY_MARK;
336 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
337 }
338 return _the_min_jint_string;
339 }
340
341 // ------------------------------------------------------------------
342 // ciEnv::get_method_from_handle
343 ciMethod* ciEnv::get_method_from_handle(Method* method) {
344 VM_ENTRY_MARK;
345 return get_metadata(method)->as_method();
346 }
347
348 // ------------------------------------------------------------------
349 // ciEnv::array_element_offset_in_bytes
350 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
351 VM_ENTRY_MARK;
352 objArrayOop a = (objArrayOop)a_h->get_oop();
353 assert(a->is_objArray(), "");
354 int length = a->length();
355 oop o = o_h->get_oop();
356 for (int i = 0; i < length; i++) {
357 if (a->obj_at(i) == o) return i;
358 }
359 return -1;
360 }
361
362
363 // ------------------------------------------------------------------
364 // ciEnv::check_klass_accessiblity
365 //
366 // Note: the logic of this method should mirror the logic of
367 // ConstantPool::verify_constant_pool_resolve.
368 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
369 Klass* resolved_klass) {
370 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
371 return true;
372 }
373 if (accessing_klass->is_obj_array_klass()) {
374 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
375 }
376 if (!accessing_klass->is_instance_klass()) {
377 return true;
378 }
379
380 if (resolved_klass->is_objArray_klass()) {
381 // Find the element klass, if this is an array.
382 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
383 }
384 if (resolved_klass->is_instance_klass()) {
385 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
386 InstanceKlass::cast(resolved_klass),
387 true) == Reflection::ACCESS_OK);
388 }
389 return true;
390 }
391
392 // ------------------------------------------------------------------
393 // ciEnv::get_klass_by_name_impl
394 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
395 const constantPoolHandle& cpool,
396 ciSymbol* name,
397 bool require_local,
398 bool is_value_type) {
399 ASSERT_IN_VM;
400 EXCEPTION_CONTEXT;
401
402 // Now we need to check the SystemDictionary
403 Symbol* sym = name->get_symbol();
404 if ((sym->byte_at(0) == 'L' || sym->byte_at(0) == 'Q') &&
405 sym->byte_at(sym->utf8_length()-1) == ';') {
406 // This is a name from a signature. Strip off the trimmings.
407 // Call recursive to keep scope of strippedsym.
408 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
409 sym->utf8_length()-2,
410 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
411 ciSymbol* strippedname = get_symbol(strippedsym);
412 is_value_type = (sym->byte_at(0) == 'Q');
413 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local, is_value_type);
414 }
415
416 // Check for prior unloaded klass. The SystemDictionary's answers
417 // can vary over time but the compiler needs consistency.
418 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
419 if (unloaded_klass != NULL) {
420 if (require_local) return NULL;
421 return unloaded_klass;
422 }
423
424 Handle loader(THREAD, (oop)NULL);
425 Handle domain(THREAD, (oop)NULL);
426 if (accessing_klass != NULL) {
427 loader = Handle(THREAD, accessing_klass->loader());
428 domain = Handle(THREAD, accessing_klass->protection_domain());
429 }
430
431 // setup up the proper type to return on OOM
432 ciKlass* fail_type;
433 if (sym->byte_at(0) == '[') {
434 fail_type = _unloaded_ciobjarrayklass;
435 } else {
436 fail_type = _unloaded_ciinstance_klass;
437 }
438 Klass* found_klass;
439 {
440 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
441 MutexLocker ml(Compile_lock);
442 Klass* kls;
443 if (!require_local) {
444 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
445 KILL_COMPILE_ON_FATAL_(fail_type));
446 } else {
447 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
448 KILL_COMPILE_ON_FATAL_(fail_type));
449 }
450 found_klass = kls;
451 }
452
453 // If we fail to find an array klass, look again for its element type.
454 // The element type may be available either locally or via constraints.
455 // In either case, if we can find the element type in the system dictionary,
456 // we must build an array type around it. The CI requires array klasses
457 // to be loaded if their element klasses are loaded, except when memory
458 // is exhausted.
459 if (sym->byte_at(0) == '[' &&
460 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L' || sym->byte_at(1) == 'Q')) {
461 // We have an unloaded array.
462 // Build it on the fly if the element class exists.
463 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
464 sym->utf8_length()-1,
465 KILL_COMPILE_ON_FATAL_(fail_type));
466
467 // Get element ciKlass recursively.
468 is_value_type = (sym->byte_at(1) == 'Q');
469 ciKlass* elem_klass =
470 get_klass_by_name_impl(accessing_klass,
471 cpool,
472 get_symbol(elem_sym),
473 require_local, is_value_type);
474 if (elem_klass != NULL && elem_klass->is_loaded()) {
475 // Now make an array for it
476 if (elem_klass->is_valuetype() && elem_klass->as_value_klass()->flatten_array()) {
477 return ciValueArrayKlass::make_impl(elem_klass);
478 } else {
479 return ciObjArrayKlass::make_impl(elem_klass);
480 }
481 }
482 }
483
484 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
485 // Look inside the constant pool for pre-resolved class entries.
486 for (int i = cpool->length() - 1; i >= 1; i--) {
487 if (cpool->tag_at(i).is_klass()) {
488 Klass* kls = cpool->resolved_klass_at(i);
489 if (kls->name() == sym) {
490 found_klass = kls;
491 break;
492 }
493 }
494 }
495 }
496
497 if (found_klass != NULL) {
498 // Found it. Build a CI handle.
499 return get_klass(found_klass);
500 }
501
502 if (require_local) return NULL;
503
504 // Not yet loaded into the VM, or not governed by loader constraints.
505 // Make a CI representative for it.
506 int i = 0;
507 while (sym->byte_at(i) == '[') {
508 i++;
509 }
510 if (i > 0 && sym->byte_at(i) == 'Q') {
511 if (EnableValhallaC1) {
512 return get_unloaded_klass(accessing_klass, name, true);
513 } else {
514 // FIXME - C2 can't handle unloaded ciValueKlass
515
516 // An unloaded array class of value types is an ObjArrayKlass, an
517 // unloaded value type class is an InstanceKlass. For consistency,
518 // make the signature of the unloaded array of value type use L
519 // rather than Q.
520 char *new_name = CURRENT_THREAD_ENV->name_buffer(sym->utf8_length()+1);
521 strncpy(new_name, (char*)sym->base(), sym->utf8_length());
522 new_name[i] = 'L';
523 new_name[sym->utf8_length()] = '\0';
524 return get_unloaded_klass(accessing_klass, ciSymbol::make(new_name), false);
525 }
526 }
527 return get_unloaded_klass(accessing_klass, name, is_value_type);
528 }
529
530 // ------------------------------------------------------------------
531 // ciEnv::get_klass_by_name
532 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
533 ciSymbol* klass_name,
534 bool require_local) {
535 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
536 constantPoolHandle(),
537 klass_name,
538 require_local);)
539 }
540
541 // ------------------------------------------------------------------
542 // ciEnv::get_klass_by_index_impl
543 //
544 // Implementation of get_klass_by_index.
545 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
546 int index,
547 bool& is_accessible,
548 ciInstanceKlass* accessor) {
549 EXCEPTION_CONTEXT;
550 Klass* klass = NULL;
551 Symbol* klass_name = NULL;
552
553 if (cpool->tag_at(index).is_symbol()) {
554 klass_name = cpool->symbol_at(index);
555 } else {
556 // Check if it's resolved if it's not a symbol constant pool entry.
557 klass = ConstantPool::klass_at_if_loaded(cpool, index);
558 // Try to look it up by name.
559 if (klass == NULL) {
560 klass_name = cpool->klass_name_at(index);
561 }
562 }
563
564 if (klass == NULL) {
565 // Not found in constant pool. Use the name to do the lookup.
566 ciKlass* k = get_klass_by_name_impl(accessor,
567 cpool,
568 get_symbol(klass_name),
569 false);
570 // Calculate accessibility the hard way.
571 if (!k->is_loaded()) {
572 is_accessible = false;
573 } else if (!oopDesc::equals(k->loader(), accessor->loader()) &&
574 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
575 // Loaded only remotely. Not linked yet.
576 is_accessible = false;
577 } else {
578 // Linked locally, and we must also check public/private, etc.
579 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
580 }
581 return k;
582 }
583
584 // Check for prior unloaded klass. The SystemDictionary's answers
585 // can vary over time but the compiler needs consistency.
586 ciSymbol* name = get_symbol(klass->name());
587 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
588 if (unloaded_klass != NULL) {
589 is_accessible = false;
590 return unloaded_klass;
591 }
592
593 // It is known to be accessible, since it was found in the constant pool.
594 is_accessible = true;
595 return get_klass(klass);
596 }
597
598 // ------------------------------------------------------------------
599 // ciEnv::get_klass_by_index
600 //
601 // Get a klass from the constant pool.
602 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
603 int index,
604 bool& is_accessible,
605 ciInstanceKlass* accessor) {
606 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
607 }
608
609 // ------------------------------------------------------------------
610 // ciEnv::get_never_null_impl
611 //
612 // Implementation of get_never_null.
613 bool ciEnv::get_never_null_impl(const constantPoolHandle& cpool, int index) {
614 Symbol* klass_name = cpool->klass_name_at(index);
615 return klass_name->is_Q_signature();
616 }
617
618 // ------------------------------------------------------------------
619 // ciEnv::get_never_null
620 //
621 // Get information about nullability from the constant pool.
622 bool ciEnv::get_never_null(const constantPoolHandle& cpool, int index) {
623 GUARDED_VM_ENTRY(return get_never_null_impl(cpool, index);)
624 }
625
626 // ------------------------------------------------------------------
627 // ciEnv::get_constant_by_index_impl
628 //
629 // Implementation of get_constant_by_index().
630 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
631 int pool_index, int cache_index,
632 ciInstanceKlass* accessor) {
633 bool ignore_will_link;
634 EXCEPTION_CONTEXT;
635 int index = pool_index;
636 if (cache_index >= 0) {
637 assert(index < 0, "only one kind of index at a time");
638 index = cpool->object_to_cp_index(cache_index);
639 oop obj = cpool->resolved_references()->obj_at(cache_index);
640 if (obj != NULL) {
641 if (oopDesc::equals(obj, Universe::the_null_sentinel())) {
642 return ciConstant(T_OBJECT, get_object(NULL));
643 }
644 BasicType bt = T_OBJECT;
645 if (cpool->tag_at(index).is_dynamic_constant())
646 bt = FieldType::basic_type(cpool->uncached_signature_ref_at(index));
647 if (is_reference_type(bt)) {
648 } else {
649 // we have to unbox the primitive value
650 if (!is_java_primitive(bt)) return ciConstant();
651 jvalue value;
652 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
653 assert(bt2 == bt, "");
654 switch (bt2) {
655 case T_DOUBLE: return ciConstant(value.d);
656 case T_FLOAT: return ciConstant(value.f);
657 case T_LONG: return ciConstant(value.j);
658 case T_INT: return ciConstant(bt2, value.i);
659 case T_SHORT: return ciConstant(bt2, value.s);
660 case T_BYTE: return ciConstant(bt2, value.b);
661 case T_CHAR: return ciConstant(bt2, value.c);
662 case T_BOOLEAN: return ciConstant(bt2, value.z);
663 default: return ciConstant();
664 }
665 }
666 ciObject* ciobj = get_object(obj);
667 if (ciobj->is_array()) {
668 return ciConstant(T_ARRAY, ciobj);
669 } else {
670 assert(ciobj->is_instance(), "should be an instance");
671 return ciConstant(T_OBJECT, ciobj);
672 }
673 }
674 }
675 constantTag tag = cpool->tag_at(index);
676 if (tag.is_int()) {
677 return ciConstant(T_INT, (jint)cpool->int_at(index));
678 } else if (tag.is_long()) {
679 return ciConstant((jlong)cpool->long_at(index));
680 } else if (tag.is_float()) {
681 return ciConstant((jfloat)cpool->float_at(index));
682 } else if (tag.is_double()) {
683 return ciConstant((jdouble)cpool->double_at(index));
684 } else if (tag.is_string()) {
685 oop string = NULL;
686 assert(cache_index >= 0, "should have a cache index");
687 if (cpool->is_pseudo_string_at(index)) {
688 string = cpool->pseudo_string_at(index, cache_index);
689 } else {
690 string = cpool->string_at(index, cache_index, THREAD);
691 if (HAS_PENDING_EXCEPTION) {
692 CLEAR_PENDING_EXCEPTION;
693 record_out_of_memory_failure();
694 return ciConstant();
695 }
696 }
697 ciObject* constant = get_object(string);
698 if (constant->is_array()) {
699 return ciConstant(T_ARRAY, constant);
700 } else {
701 assert (constant->is_instance(), "must be an instance, or not? ");
702 return ciConstant(T_OBJECT, constant);
703 }
704 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
705 // 4881222: allow ldc to take a class type
706 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
707 if (HAS_PENDING_EXCEPTION) {
708 CLEAR_PENDING_EXCEPTION;
709 record_out_of_memory_failure();
710 return ciConstant();
711 }
712 assert (klass->is_instance_klass() || klass->is_array_klass(),
713 "must be an instance or array klass ");
714 return ciConstant(T_OBJECT, klass->java_mirror());
715 } else if (tag.is_method_type()) {
716 // must execute Java code to link this CP entry into cache[i].f1
717 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
718 ciObject* ciobj = get_unloaded_method_type_constant(signature);
719 return ciConstant(T_OBJECT, ciobj);
720 } else if (tag.is_method_handle()) {
721 // must execute Java code to link this CP entry into cache[i].f1
722 int ref_kind = cpool->method_handle_ref_kind_at(index);
723 int callee_index = cpool->method_handle_klass_index_at(index);
724 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
725 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
726 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
727 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
728 return ciConstant(T_OBJECT, ciobj);
729 } else if (tag.is_dynamic_constant()) {
730 return ciConstant();
731 } else {
732 ShouldNotReachHere();
733 return ciConstant();
734 }
735 }
736
737 // ------------------------------------------------------------------
738 // ciEnv::get_constant_by_index
739 //
740 // Pull a constant out of the constant pool. How appropriate.
741 //
742 // Implementation note: this query is currently in no way cached.
743 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
744 int pool_index, int cache_index,
745 ciInstanceKlass* accessor) {
746 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
747 }
748
749 // ------------------------------------------------------------------
750 // ciEnv::get_field_by_index_impl
751 //
752 // Implementation of get_field_by_index.
753 //
754 // Implementation note: the results of field lookups are cached
755 // in the accessor klass.
756 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
757 int index) {
758 ciConstantPoolCache* cache = accessor->field_cache();
759 if (cache == NULL) {
760 ciField* field = new (arena()) ciField(accessor, index);
761 return field;
762 } else {
763 ciField* field = (ciField*)cache->get(index);
764 if (field == NULL) {
765 field = new (arena()) ciField(accessor, index);
766 cache->insert(index, field);
767 }
768 return field;
769 }
770 }
771
772 // ------------------------------------------------------------------
773 // ciEnv::get_field_by_index
774 //
775 // Get a field by index from a klass's constant pool.
776 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
777 int index) {
778 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
779 }
780
781 // ------------------------------------------------------------------
782 // ciEnv::lookup_method
783 //
784 // Perform an appropriate method lookup based on accessor, holder,
785 // name, signature, and bytecode.
786 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
787 ciKlass* holder,
788 Symbol* name,
789 Symbol* sig,
790 Bytecodes::Code bc,
791 constantTag tag) {
792 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
793 assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible");
794
795 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
796 Klass* holder_klass = holder->get_Klass();
797 methodHandle dest_method;
798 LinkInfo link_info(holder_klass, name, sig, accessor_klass, LinkInfo::needs_access_check, tag);
799 switch (bc) {
800 case Bytecodes::_invokestatic:
801 dest_method =
802 LinkResolver::resolve_static_call_or_null(link_info);
803 break;
804 case Bytecodes::_invokespecial:
805 dest_method =
806 LinkResolver::resolve_special_call_or_null(link_info);
807 break;
808 case Bytecodes::_invokeinterface:
809 dest_method =
810 LinkResolver::linktime_resolve_interface_method_or_null(link_info);
811 break;
812 case Bytecodes::_invokevirtual:
813 dest_method =
814 LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
815 break;
816 default: ShouldNotReachHere();
817 }
818
819 return dest_method();
820 }
821
822
823 // ------------------------------------------------------------------
824 // ciEnv::get_method_by_index_impl
825 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
826 int index, Bytecodes::Code bc,
827 ciInstanceKlass* accessor) {
828 if (bc == Bytecodes::_invokedynamic) {
829 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
830 bool is_resolved = !cpce->is_f1_null();
831 // FIXME: code generation could allow for null (unlinked) call site
832 // The call site could be made patchable as follows:
833 // Load the appendix argument from the constant pool.
834 // Test the appendix argument and jump to a known deopt routine if it is null.
835 // Jump through a patchable call site, which is initially a deopt routine.
836 // Patch the call site to the nmethod entry point of the static compiled lambda form.
837 // As with other two-component call sites, both values must be independently verified.
838
839 if (is_resolved) {
840 // Get the invoker Method* from the constant pool.
841 // (The appendix argument, if any, will be noted in the method's signature.)
842 Method* adapter = cpce->f1_as_method();
843 return get_method(adapter);
844 }
845
846 // Fake a method that is equivalent to a declared method.
847 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
848 ciSymbol* name = ciSymbol::invokeBasic_name();
849 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
850 return get_unloaded_method(holder, name, signature, accessor);
851 } else {
852 const int holder_index = cpool->klass_ref_index_at(index);
853 bool holder_is_accessible;
854 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
855
856 // Get the method's name and signature.
857 Symbol* name_sym = cpool->name_ref_at(index);
858 Symbol* sig_sym = cpool->signature_ref_at(index);
859
860 if (cpool->has_preresolution()
861 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
862 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
863 // Short-circuit lookups for JSR 292-related call sites.
864 // That is, do not rely only on name-based lookups, because they may fail
865 // if the names are not resolvable in the boot class loader (7056328).
866 switch (bc) {
867 case Bytecodes::_invokevirtual:
868 case Bytecodes::_invokeinterface:
869 case Bytecodes::_invokespecial:
870 case Bytecodes::_invokestatic:
871 {
872 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
873 if (m != NULL) {
874 return get_method(m);
875 }
876 }
877 break;
878 default:
879 break;
880 }
881 }
882
883 if (holder_is_accessible) { // Our declared holder is loaded.
884 constantTag tag = cpool->tag_ref_at(index);
885 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
886 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
887 if (m != NULL &&
888 (bc == Bytecodes::_invokestatic
889 ? m->method_holder()->is_not_initialized()
890 : !m->method_holder()->is_loaded())) {
891 m = NULL;
892 }
893 #ifdef ASSERT
894 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
895 m = NULL;
896 }
897 #endif
898 if (m != NULL) {
899 // We found the method.
900 return get_method(m);
901 }
902 }
903
904 // Either the declared holder was not loaded, or the method could
905 // not be found. Create a dummy ciMethod to represent the failed
906 // lookup.
907 ciSymbol* name = get_symbol(name_sym);
908 ciSymbol* signature = get_symbol(sig_sym);
909 return get_unloaded_method(holder, name, signature, accessor);
910 }
911 }
912
913
914 // ------------------------------------------------------------------
915 // ciEnv::get_instance_klass_for_declared_method_holder
916 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
917 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
918 // instead of a ciInstanceKlass. For that case simply pretend that the
919 // declared holder is Object.clone since that's where the call will bottom out.
920 // A more correct fix would trickle out through many interfaces in CI,
921 // requiring ciInstanceKlass* to become ciKlass* and many more places would
922 // require checks to make sure the expected type was found. Given that this
923 // only occurs for clone() the more extensive fix seems like overkill so
924 // instead we simply smear the array type into Object.
925 guarantee(method_holder != NULL, "no method holder");
926 if (method_holder->is_instance_klass()) {
927 return method_holder->as_instance_klass();
928 } else if (method_holder->is_array_klass()) {
929 return current()->Object_klass();
930 } else {
931 ShouldNotReachHere();
932 }
933 return NULL;
934 }
935
936
937 // ------------------------------------------------------------------
938 // ciEnv::get_method_by_index
939 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
940 int index, Bytecodes::Code bc,
941 ciInstanceKlass* accessor) {
942 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
943 }
944
945
946 // ------------------------------------------------------------------
947 // ciEnv::name_buffer
948 char *ciEnv::name_buffer(int req_len) {
949 if (_name_buffer_len < req_len) {
950 if (_name_buffer == NULL) {
951 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
952 _name_buffer_len = req_len;
953 } else {
954 _name_buffer =
955 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
956 _name_buffer_len = req_len;
957 }
958 }
959 return _name_buffer;
960 }
961
962 // ------------------------------------------------------------------
963 // ciEnv::is_in_vm
964 bool ciEnv::is_in_vm() {
965 return JavaThread::current()->thread_state() == _thread_in_vm;
966 }
967
968 bool ciEnv::system_dictionary_modification_counter_changed() {
969 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
970 }
971
972 // ------------------------------------------------------------------
973 // ciEnv::validate_compile_task_dependencies
974 //
975 // Check for changes during compilation (e.g. class loads, evolution,
976 // breakpoints, call site invalidation).
977 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
978 if (failing()) return; // no need for further checks
979
980 bool counter_changed = system_dictionary_modification_counter_changed();
981 Dependencies::DepType result = dependencies()->validate_dependencies(_task, counter_changed);
982 if (result != Dependencies::end_marker) {
983 if (result == Dependencies::call_site_target_value) {
984 _inc_decompile_count_on_failure = false;
985 record_failure("call site target change");
986 } else if (Dependencies::is_klass_type(result)) {
987 record_failure("concurrent class loading");
988 } else {
989 record_failure("invalid non-klass dependency");
990 }
991 }
992 }
993
994 // ------------------------------------------------------------------
995 // ciEnv::register_method
996 void ciEnv::register_method(ciMethod* target,
997 int entry_bci,
998 CodeOffsets* offsets,
999 int orig_pc_offset,
1000 CodeBuffer* code_buffer,
1001 int frame_words,
1002 OopMapSet* oop_map_set,
1003 ExceptionHandlerTable* handler_table,
1004 ImplicitExceptionTable* inc_table,
1005 AbstractCompiler* compiler,
1006 bool has_unsafe_access,
1007 bool has_wide_vectors,
1008 RTMState rtm_state) {
1009 VM_ENTRY_MARK;
1010 nmethod* nm = NULL;
1011 {
1012 // To prevent compile queue updates.
1013 MutexLocker locker(MethodCompileQueue_lock, THREAD);
1014
1015 // Prevent SystemDictionary::add_to_hierarchy from running
1016 // and invalidating our dependencies until we install this method.
1017 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1018 MutexLocker ml(Compile_lock);
1019 NoSafepointVerifier nsv;
1020
1021 // Change in Jvmti state may invalidate compilation.
1022 if (!failing() && jvmti_state_changed()) {
1023 record_failure("Jvmti state change invalidated dependencies");
1024 }
1025
1026 // Change in DTrace flags may invalidate compilation.
1027 if (!failing() &&
1028 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
1029 (!dtrace_method_probes() && DTraceMethodProbes) ||
1030 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1031 record_failure("DTrace flags change invalidated dependencies");
1032 }
1033
1034 if (!failing()) {
1035 if (log() != NULL) {
1036 // Log the dependencies which this compilation declares.
1037 dependencies()->log_all_dependencies();
1038 }
1039
1040 // Encode the dependencies now, so we can check them right away.
1041 dependencies()->encode_content_bytes();
1042
1043 // Check for {class loads, evolution, breakpoints, ...} during compilation
1044 validate_compile_task_dependencies(target);
1045 }
1046
1047 methodHandle method(THREAD, target->get_Method());
1048
1049 #if INCLUDE_RTM_OPT
1050 if (!failing() && (rtm_state != NoRTM) &&
1051 (method()->method_data() != NULL) &&
1052 (method()->method_data()->rtm_state() != rtm_state)) {
1053 // Preemptive decompile if rtm state was changed.
1054 record_failure("RTM state change invalidated rtm code");
1055 }
1056 #endif
1057
1058 if (failing()) {
1059 // While not a true deoptimization, it is a preemptive decompile.
1060 MethodData* mdo = method()->method_data();
1061 if (mdo != NULL && _inc_decompile_count_on_failure) {
1062 mdo->inc_decompile_count();
1063 }
1064
1065 // All buffers in the CodeBuffer are allocated in the CodeCache.
1066 // If the code buffer is created on each compile attempt
1067 // as in C2, then it must be freed.
1068 code_buffer->free_blob();
1069 return;
1070 }
1071
1072 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1073 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1074
1075 nm = nmethod::new_nmethod(method,
1076 compile_id(),
1077 entry_bci,
1078 offsets,
1079 orig_pc_offset,
1080 debug_info(), dependencies(), code_buffer,
1081 frame_words, oop_map_set,
1082 handler_table, inc_table,
1083 compiler, task()->comp_level());
1084
1085 // Free codeBlobs
1086 code_buffer->free_blob();
1087
1088 if (nm != NULL) {
1089 nm->set_has_unsafe_access(has_unsafe_access);
1090 nm->set_has_wide_vectors(has_wide_vectors);
1091 #if INCLUDE_RTM_OPT
1092 nm->set_rtm_state(rtm_state);
1093 #endif
1094
1095 // Record successful registration.
1096 // (Put nm into the task handle *before* publishing to the Java heap.)
1097 if (task() != NULL) {
1098 task()->set_code(nm);
1099 }
1100
1101 if (entry_bci == InvocationEntryBci) {
1102 if (TieredCompilation) {
1103 // If there is an old version we're done with it
1104 CompiledMethod* old = method->code();
1105 if (TraceMethodReplacement && old != NULL) {
1106 ResourceMark rm;
1107 char *method_name = method->name_and_sig_as_C_string();
1108 tty->print_cr("Replacing method %s", method_name);
1109 }
1110 if (old != NULL) {
1111 old->make_not_used();
1112 }
1113 }
1114 if (TraceNMethodInstalls) {
1115 ResourceMark rm;
1116 char *method_name = method->name_and_sig_as_C_string();
1117 ttyLocker ttyl;
1118 tty->print_cr("Installing method (%d) %s ",
1119 task()->comp_level(),
1120 method_name);
1121 }
1122 // Allow the code to be executed
1123 method->set_code(method, nm);
1124 } else {
1125 if (TraceNMethodInstalls) {
1126 ResourceMark rm;
1127 char *method_name = method->name_and_sig_as_C_string();
1128 ttyLocker ttyl;
1129 tty->print_cr("Installing osr method (%d) %s @ %d",
1130 task()->comp_level(),
1131 method_name,
1132 entry_bci);
1133 }
1134 method->method_holder()->add_osr_nmethod(nm);
1135 }
1136 nm->make_in_use();
1137 }
1138 } // safepoints are allowed again
1139
1140 if (nm != NULL) {
1141 // JVMTI -- compiled method notification (must be done outside lock)
1142 nm->post_compiled_method_load_event();
1143 } else {
1144 // The CodeCache is full.
1145 record_failure("code cache is full");
1146 }
1147 }
1148
1149
1150 // ------------------------------------------------------------------
1151 // ciEnv::find_system_klass
1152 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1153 VM_ENTRY_MARK;
1154 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1155 }
1156
1157 // ------------------------------------------------------------------
1158 // ciEnv::comp_level
1159 int ciEnv::comp_level() {
1160 if (task() == NULL) return CompLevel_highest_tier;
1161 return task()->comp_level();
1162 }
1163
1164 // ------------------------------------------------------------------
1165 // ciEnv::compile_id
1166 uint ciEnv::compile_id() {
1167 if (task() == NULL) return 0;
1168 return task()->compile_id();
1169 }
1170
1171 // ------------------------------------------------------------------
1172 // ciEnv::notice_inlined_method()
1173 void ciEnv::notice_inlined_method(ciMethod* method) {
1174 _num_inlined_bytecodes += method->code_size_for_inlining();
1175 }
1176
1177 // ------------------------------------------------------------------
1178 // ciEnv::num_inlined_bytecodes()
1179 int ciEnv::num_inlined_bytecodes() const {
1180 return _num_inlined_bytecodes;
1181 }
1182
1183 // ------------------------------------------------------------------
1184 // ciEnv::record_failure()
1185 void ciEnv::record_failure(const char* reason) {
1186 if (_failure_reason == NULL) {
1187 // Record the first failure reason.
1188 _failure_reason = reason;
1189 }
1190 }
1191
1192 void ciEnv::report_failure(const char* reason) {
1193 EventCompilationFailure event;
1194 if (event.should_commit()) {
1195 event.set_compileId(compile_id());
1196 event.set_failureMessage(reason);
1197 event.commit();
1198 }
1199 }
1200
1201 // ------------------------------------------------------------------
1202 // ciEnv::record_method_not_compilable()
1203 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1204 int new_compilable =
1205 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1206
1207 // Only note transitions to a worse state
1208 if (new_compilable > _compilable) {
1209 if (log() != NULL) {
1210 if (all_tiers) {
1211 log()->elem("method_not_compilable");
1212 } else {
1213 log()->elem("method_not_compilable_at_tier level='%d'",
1214 current()->task()->comp_level());
1215 }
1216 }
1217 _compilable = new_compilable;
1218
1219 // Reset failure reason; this one is more important.
1220 _failure_reason = NULL;
1221 record_failure(reason);
1222 }
1223 }
1224
1225 // ------------------------------------------------------------------
1226 // ciEnv::record_out_of_memory_failure()
1227 void ciEnv::record_out_of_memory_failure() {
1228 // If memory is low, we stop compiling methods.
1229 record_method_not_compilable("out of memory");
1230 }
1231
1232 ciInstance* ciEnv::unloaded_ciinstance() {
1233 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1234 }
1235
1236 // ------------------------------------------------------------------
1237 // ciEnv::dump_replay_data*
1238
1239 // Don't change thread state and acquire any locks.
1240 // Safe to call from VM error reporter.
1241
1242 void ciEnv::dump_compile_data(outputStream* out) {
1243 CompileTask* task = this->task();
1244 if (task) {
1245 Method* method = task->method();
1246 int entry_bci = task->osr_bci();
1247 int comp_level = task->comp_level();
1248 out->print("compile %s %s %s %d %d",
1249 method->klass_name()->as_quoted_ascii(),
1250 method->name()->as_quoted_ascii(),
1251 method->signature()->as_quoted_ascii(),
1252 entry_bci, comp_level);
1253 if (compiler_data() != NULL) {
1254 if (is_c2_compile(comp_level)) {
1255 #ifdef COMPILER2
1256 // Dump C2 inlining data.
1257 ((Compile*)compiler_data())->dump_inline_data(out);
1258 #endif
1259 } else if (is_c1_compile(comp_level)) {
1260 #ifdef COMPILER1
1261 // Dump C1 inlining data.
1262 ((Compilation*)compiler_data())->dump_inline_data(out);
1263 #endif
1264 }
1265 }
1266 out->cr();
1267 }
1268 }
1269
1270 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1271 ResourceMark rm;
1272 #if INCLUDE_JVMTI
1273 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1274 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1275 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1276 #endif // INCLUDE_JVMTI
1277
1278 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1279 out->print_cr("# %d ciObject found", objects->length());
1280 for (int i = 0; i < objects->length(); i++) {
1281 objects->at(i)->dump_replay_data(out);
1282 }
1283 dump_compile_data(out);
1284 out->flush();
1285 }
1286
1287 void ciEnv::dump_replay_data(outputStream* out) {
1288 GUARDED_VM_ENTRY(
1289 MutexLocker ml(Compile_lock);
1290 dump_replay_data_unsafe(out);
1291 )
1292 }
1293
1294 void ciEnv::dump_replay_data(int compile_id) {
1295 static char buffer[O_BUFLEN];
1296 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1297 if (ret > 0) {
1298 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1299 if (fd != -1) {
1300 FILE* replay_data_file = os::open(fd, "w");
1301 if (replay_data_file != NULL) {
1302 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1303 dump_replay_data(&replay_data_stream);
1304 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1305 } else {
1306 tty->print_cr("# Can't open file to dump replay data.");
1307 }
1308 }
1309 }
1310 }
1311
1312 void ciEnv::dump_inline_data(int compile_id) {
1313 static char buffer[O_BUFLEN];
1314 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1315 if (ret > 0) {
1316 int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1317 if (fd != -1) {
1318 FILE* inline_data_file = os::open(fd, "w");
1319 if (inline_data_file != NULL) {
1320 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1321 GUARDED_VM_ENTRY(
1322 MutexLocker ml(Compile_lock);
1323 dump_compile_data(&replay_data_stream);
1324 )
1325 replay_data_stream.flush();
1326 tty->print("# Compiler inline data is saved as: ");
1327 tty->print_cr("%s", buffer);
1328 } else {
1329 tty->print_cr("# Can't open file to dump inline data.");
1330 }
1331 }
1332 }
1333 }