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