1 /*
2 * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "ci/ciConstant.hpp"
28 #include "ci/ciEnv.hpp"
29 #include "ci/ciField.hpp"
30 #include "ci/ciInstance.hpp"
31 #include "ci/ciInstanceKlass.hpp"
32 #include "ci/ciMethod.hpp"
33 #include "ci/ciNullObject.hpp"
34 #include "ci/ciReplay.hpp"
35 #include "ci/ciUtilities.inline.hpp"
36 #include "classfile/systemDictionary.hpp"
37 #include "classfile/vmSymbols.hpp"
38 #include "code/codeCache.hpp"
39 #include "code/scopeDesc.hpp"
40 #include "compiler/compileBroker.hpp"
41 #include "compiler/compileLog.hpp"
42 #include "compiler/disassembler.hpp"
43 #include "gc/shared/collectedHeap.inline.hpp"
44 #include "interpreter/linkResolver.hpp"
45 #include "jfr/jfrEvents.hpp"
46 #include "memory/allocation.inline.hpp"
47 #include "memory/oopFactory.hpp"
48 #include "memory/resourceArea.hpp"
49 #include "memory/universe.hpp"
50 #include "oops/constantPool.inline.hpp"
51 #include "oops/cpCache.inline.hpp"
52 #include "oops/method.inline.hpp"
53 #include "oops/methodData.hpp"
54 #include "oops/objArrayKlass.hpp"
55 #include "oops/objArrayOop.inline.hpp"
56 #include "oops/oop.inline.hpp"
57 #include "prims/jvmtiExport.hpp"
58 #include "runtime/init.hpp"
59 #include "runtime/reflection.hpp"
60 #include "runtime/jniHandles.inline.hpp"
61 #include "runtime/safepointVerifiers.hpp"
62 #include "runtime/sharedRuntime.hpp"
63 #include "runtime/thread.inline.hpp"
64 #include "utilities/dtrace.hpp"
65 #include "utilities/macros.hpp"
66 #ifdef COMPILER1
67 #include "c1/c1_Runtime1.hpp"
68 #endif
69 #ifdef COMPILER2
70 #include "opto/runtime.hpp"
71 #endif
72
73 // ciEnv
74 //
75 // This class is the top level broker for requests from the compiler
76 // to the VM.
77
78 ciObject* ciEnv::_null_object_instance;
79
80 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
81 WK_KLASSES_DO(WK_KLASS_DEFN)
82 #undef WK_KLASS_DEFN
83
84 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
85 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
86 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
87
88 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
89 jobject ciEnv::_ArrayStoreException_handle = NULL;
90 jobject ciEnv::_ClassCastException_handle = NULL;
91
92 #ifndef PRODUCT
93 static bool firstEnv = true;
94 #endif /* PRODUCT */
95
96 // ------------------------------------------------------------------
97 // ciEnv::ciEnv
ciEnv(CompileTask * task,int system_dictionary_modification_counter)98 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter)
99 : _ciEnv_arena(mtCompiler) {
100 VM_ENTRY_MARK;
101
102 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
103 thread->set_env(this);
104 assert(ciEnv::current() == this, "sanity");
105
106 _oop_recorder = NULL;
107 _debug_info = NULL;
108 _dependencies = NULL;
109 _failure_reason = NULL;
110 _inc_decompile_count_on_failure = true;
111 _compilable = MethodCompilable;
112 _break_at_compile = false;
113 _compiler_data = NULL;
114 #ifndef PRODUCT
115 assert(!firstEnv, "not initialized properly");
116 #endif /* !PRODUCT */
117
118 _system_dictionary_modification_counter = system_dictionary_modification_counter;
119 _num_inlined_bytecodes = 0;
120 assert(task == NULL || thread->task() == task, "sanity");
121 if (task != NULL) {
122 task->mark_started(os::elapsed_counter());
123 }
124 _task = task;
125 _log = NULL;
126
127 // Temporary buffer for creating symbols and such.
128 _name_buffer = NULL;
129 _name_buffer_len = 0;
130
131 _arena = &_ciEnv_arena;
132 _factory = new (_arena) ciObjectFactory(_arena, 128);
133
134 // Preload commonly referenced system ciObjects.
135
136 // During VM initialization, these instances have not yet been created.
137 // Assertions ensure that these instances are not accessed before
138 // their initialization.
139
140 assert(Universe::is_fully_initialized(), "should be complete");
141
142 oop o = Universe::null_ptr_exception_instance();
143 assert(o != NULL, "should have been initialized");
144 _NullPointerException_instance = get_object(o)->as_instance();
145 o = Universe::arithmetic_exception_instance();
146 assert(o != NULL, "should have been initialized");
147 _ArithmeticException_instance = get_object(o)->as_instance();
148
149 _ArrayIndexOutOfBoundsException_instance = NULL;
150 _ArrayStoreException_instance = NULL;
151 _ClassCastException_instance = NULL;
152 _the_null_string = NULL;
153 _the_min_jint_string = NULL;
154
155 _jvmti_can_hotswap_or_post_breakpoint = false;
156 _jvmti_can_access_local_variables = false;
157 _jvmti_can_post_on_exceptions = false;
158 _jvmti_can_pop_frame = false;
159 }
160
ciEnv(Arena * arena)161 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
162 ASSERT_IN_VM;
163
164 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
165 CompilerThread* current_thread = CompilerThread::current();
166 assert(current_thread->env() == NULL, "must be");
167 current_thread->set_env(this);
168 assert(ciEnv::current() == this, "sanity");
169
170 _oop_recorder = NULL;
171 _debug_info = NULL;
172 _dependencies = NULL;
173 _failure_reason = NULL;
174 _inc_decompile_count_on_failure = true;
175 _compilable = MethodCompilable_never;
176 _break_at_compile = false;
177 _compiler_data = NULL;
178 #ifndef PRODUCT
179 assert(firstEnv, "must be first");
180 firstEnv = false;
181 #endif /* !PRODUCT */
182
183 _system_dictionary_modification_counter = 0;
184 _num_inlined_bytecodes = 0;
185 _task = NULL;
186 _log = NULL;
187
188 // Temporary buffer for creating symbols and such.
189 _name_buffer = NULL;
190 _name_buffer_len = 0;
191
192 _arena = arena;
193 _factory = new (_arena) ciObjectFactory(_arena, 128);
194
195 // Preload commonly referenced system ciObjects.
196
197 // During VM initialization, these instances have not yet been created.
198 // Assertions ensure that these instances are not accessed before
199 // their initialization.
200
201 assert(Universe::is_fully_initialized(), "must be");
202
203 _NullPointerException_instance = NULL;
204 _ArithmeticException_instance = NULL;
205 _ArrayIndexOutOfBoundsException_instance = NULL;
206 _ArrayStoreException_instance = NULL;
207 _ClassCastException_instance = NULL;
208 _the_null_string = NULL;
209 _the_min_jint_string = NULL;
210
211 _jvmti_can_hotswap_or_post_breakpoint = false;
212 _jvmti_can_access_local_variables = false;
213 _jvmti_can_post_on_exceptions = false;
214 _jvmti_can_pop_frame = false;
215 }
216
~ciEnv()217 ciEnv::~ciEnv() {
218 GUARDED_VM_ENTRY(
219 CompilerThread* current_thread = CompilerThread::current();
220 _factory->remove_symbols();
221 // Need safepoint to clear the env on the thread. RedefineClasses might
222 // be reading it.
223 current_thread->set_env(NULL);
224 )
225 }
226
227 // ------------------------------------------------------------------
228 // Cache Jvmti state
cache_jvmti_state()229 void ciEnv::cache_jvmti_state() {
230 VM_ENTRY_MARK;
231 // Get Jvmti capabilities under lock to get consistant values.
232 MutexLocker mu(JvmtiThreadState_lock);
233 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
234 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
235 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
236 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
237 _jvmti_can_get_owned_monitor_info = JvmtiExport::can_get_owned_monitor_info();
238 }
239
jvmti_state_changed() const240 bool ciEnv::jvmti_state_changed() const {
241 if (!_jvmti_can_access_local_variables &&
242 JvmtiExport::can_access_local_variables()) {
243 return true;
244 }
245 if (!_jvmti_can_hotswap_or_post_breakpoint &&
246 JvmtiExport::can_hotswap_or_post_breakpoint()) {
247 return true;
248 }
249 if (!_jvmti_can_post_on_exceptions &&
250 JvmtiExport::can_post_on_exceptions()) {
251 return true;
252 }
253 if (!_jvmti_can_pop_frame &&
254 JvmtiExport::can_pop_frame()) {
255 return true;
256 }
257 return false;
258 }
259
260 // ------------------------------------------------------------------
261 // Cache DTrace flags
cache_dtrace_flags()262 void ciEnv::cache_dtrace_flags() {
263 // Need lock?
264 _dtrace_extended_probes = ExtendedDTraceProbes;
265 if (_dtrace_extended_probes) {
266 _dtrace_monitor_probes = true;
267 _dtrace_method_probes = true;
268 _dtrace_alloc_probes = true;
269 } else {
270 _dtrace_monitor_probes = DTraceMonitorProbes;
271 _dtrace_method_probes = DTraceMethodProbes;
272 _dtrace_alloc_probes = DTraceAllocProbes;
273 }
274 }
275
276 // ------------------------------------------------------------------
277 // helper for lazy exception creation
get_or_create_exception(jobject & handle,Symbol * name)278 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
279 VM_ENTRY_MARK;
280 if (handle == NULL) {
281 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
282 Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
283 jobject objh = NULL;
284 if (!HAS_PENDING_EXCEPTION && k != NULL) {
285 oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
286 if (!HAS_PENDING_EXCEPTION)
287 objh = JNIHandles::make_global(Handle(THREAD, obj));
288 }
289 if (HAS_PENDING_EXCEPTION) {
290 CLEAR_PENDING_EXCEPTION;
291 } else {
292 handle = objh;
293 }
294 }
295 oop obj = JNIHandles::resolve(handle);
296 return obj == NULL? NULL: get_object(obj)->as_instance();
297 }
298
ArrayIndexOutOfBoundsException_instance()299 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
300 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
301 _ArrayIndexOutOfBoundsException_instance
302 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
303 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
304 }
305 return _ArrayIndexOutOfBoundsException_instance;
306 }
ArrayStoreException_instance()307 ciInstance* ciEnv::ArrayStoreException_instance() {
308 if (_ArrayStoreException_instance == NULL) {
309 _ArrayStoreException_instance
310 = get_or_create_exception(_ArrayStoreException_handle,
311 vmSymbols::java_lang_ArrayStoreException());
312 }
313 return _ArrayStoreException_instance;
314 }
ClassCastException_instance()315 ciInstance* ciEnv::ClassCastException_instance() {
316 if (_ClassCastException_instance == NULL) {
317 _ClassCastException_instance
318 = get_or_create_exception(_ClassCastException_handle,
319 vmSymbols::java_lang_ClassCastException());
320 }
321 return _ClassCastException_instance;
322 }
323
the_null_string()324 ciInstance* ciEnv::the_null_string() {
325 if (_the_null_string == NULL) {
326 VM_ENTRY_MARK;
327 _the_null_string = get_object(Universe::the_null_string())->as_instance();
328 }
329 return _the_null_string;
330 }
331
the_min_jint_string()332 ciInstance* ciEnv::the_min_jint_string() {
333 if (_the_min_jint_string == NULL) {
334 VM_ENTRY_MARK;
335 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
336 }
337 return _the_min_jint_string;
338 }
339
340 // ------------------------------------------------------------------
341 // ciEnv::get_method_from_handle
get_method_from_handle(Method * method)342 ciMethod* ciEnv::get_method_from_handle(Method* method) {
343 VM_ENTRY_MARK;
344 return get_metadata(method)->as_method();
345 }
346
347 // ------------------------------------------------------------------
348 // ciEnv::array_element_offset_in_bytes
array_element_offset_in_bytes(ciArray * a_h,ciObject * o_h)349 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
350 VM_ENTRY_MARK;
351 objArrayOop a = (objArrayOop)a_h->get_oop();
352 assert(a->is_objArray(), "");
353 int length = a->length();
354 oop o = o_h->get_oop();
355 for (int i = 0; i < length; i++) {
356 if (a->obj_at(i) == o) return i;
357 }
358 return -1;
359 }
360
361
362 // ------------------------------------------------------------------
363 // ciEnv::check_klass_accessiblity
364 //
365 // Note: the logic of this method should mirror the logic of
366 // ConstantPool::verify_constant_pool_resolve.
check_klass_accessibility(ciKlass * accessing_klass,Klass * resolved_klass)367 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
368 Klass* resolved_klass) {
369 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
370 return true;
371 }
372 if (accessing_klass->is_obj_array_klass()) {
373 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
374 }
375 if (!accessing_klass->is_instance_klass()) {
376 return true;
377 }
378 if (!_jvmti_can_get_owned_monitor_info &&
379 JvmtiExport::can_get_owned_monitor_info()) {
380 return true;
381 }
382
383 if (resolved_klass->is_objArray_klass()) {
384 // Find the element klass, if this is an array.
385 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
386 }
387 if (resolved_klass->is_instance_klass()) {
388 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
389 InstanceKlass::cast(resolved_klass),
390 true) == Reflection::ACCESS_OK);
391 }
392 return true;
393 }
394
395 // ------------------------------------------------------------------
396 // ciEnv::get_klass_by_name_impl
get_klass_by_name_impl(ciKlass * accessing_klass,const constantPoolHandle & cpool,ciSymbol * name,bool require_local)397 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
398 const constantPoolHandle& cpool,
399 ciSymbol* name,
400 bool require_local) {
401 ASSERT_IN_VM;
402 EXCEPTION_CONTEXT;
403
404 // Now we need to check the SystemDictionary
405 Symbol* sym = name->get_symbol();
406 if (sym->byte_at(0) == 'L' &&
407 sym->byte_at(sym->utf8_length()-1) == ';') {
408 // This is a name from a signature. Strip off the trimmings.
409 // Call recursive to keep scope of strippedsym.
410 TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
411 sym->utf8_length()-2,
412 KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
413 ciSymbol* strippedname = get_symbol(strippedsym);
414 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
415 }
416
417 // Check for prior unloaded klass. The SystemDictionary's answers
418 // can vary over time but the compiler needs consistency.
419 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
420 if (unloaded_klass != NULL) {
421 if (require_local) return NULL;
422 return unloaded_klass;
423 }
424
425 Handle loader(THREAD, (oop)NULL);
426 Handle domain(THREAD, (oop)NULL);
427 if (accessing_klass != NULL) {
428 loader = Handle(THREAD, accessing_klass->loader());
429 domain = Handle(THREAD, accessing_klass->protection_domain());
430 }
431
432 // setup up the proper type to return on OOM
433 ciKlass* fail_type;
434 if (sym->byte_at(0) == '[') {
435 fail_type = _unloaded_ciobjarrayklass;
436 } else {
437 fail_type = _unloaded_ciinstance_klass;
438 }
439 Klass* found_klass;
440 {
441 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
442 MutexLocker ml(Compile_lock);
443 Klass* kls;
444 if (!require_local) {
445 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
446 KILL_COMPILE_ON_FATAL_(fail_type));
447 } else {
448 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
449 KILL_COMPILE_ON_FATAL_(fail_type));
450 }
451 found_klass = kls;
452 }
453
454 // If we fail to find an array klass, look again for its element type.
455 // The element type may be available either locally or via constraints.
456 // In either case, if we can find the element type in the system dictionary,
457 // we must build an array type around it. The CI requires array klasses
458 // to be loaded if their element klasses are loaded, except when memory
459 // is exhausted.
460 if (sym->byte_at(0) == '[' &&
461 (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
462 // We have an unloaded array.
463 // Build it on the fly if the element class exists.
464 TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
465 sym->utf8_length()-1,
466 KILL_COMPILE_ON_FATAL_(fail_type));
467
468 // Get element ciKlass recursively.
469 ciKlass* elem_klass =
470 get_klass_by_name_impl(accessing_klass,
471 cpool,
472 get_symbol(elem_sym),
473 require_local);
474 if (elem_klass != NULL && elem_klass->is_loaded()) {
475 // Now make an array for it
476 return ciObjArrayKlass::make_impl(elem_klass);
477 }
478 }
479
480 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
481 // Look inside the constant pool for pre-resolved class entries.
482 for (int i = cpool->length() - 1; i >= 1; i--) {
483 if (cpool->tag_at(i).is_klass()) {
484 Klass* kls = cpool->resolved_klass_at(i);
485 if (kls->name() == sym) {
486 found_klass = kls;
487 break;
488 }
489 }
490 }
491 }
492
493 if (found_klass != NULL) {
494 // Found it. Build a CI handle.
495 return get_klass(found_klass);
496 }
497
498 if (require_local) return NULL;
499
500 // Not yet loaded into the VM, or not governed by loader constraints.
501 // Make a CI representative for it.
502 return get_unloaded_klass(accessing_klass, name);
503 }
504
505 // ------------------------------------------------------------------
506 // ciEnv::get_klass_by_name
get_klass_by_name(ciKlass * accessing_klass,ciSymbol * klass_name,bool require_local)507 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
508 ciSymbol* klass_name,
509 bool require_local) {
510 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
511 constantPoolHandle(),
512 klass_name,
513 require_local);)
514 }
515
516 // ------------------------------------------------------------------
517 // ciEnv::get_klass_by_index_impl
518 //
519 // Implementation of get_klass_by_index.
get_klass_by_index_impl(const constantPoolHandle & cpool,int index,bool & is_accessible,ciInstanceKlass * accessor)520 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
521 int index,
522 bool& is_accessible,
523 ciInstanceKlass* accessor) {
524 EXCEPTION_CONTEXT;
525 Klass* klass = NULL;
526 Symbol* klass_name = NULL;
527
528 if (cpool->tag_at(index).is_symbol()) {
529 klass_name = cpool->symbol_at(index);
530 } else {
531 // Check if it's resolved if it's not a symbol constant pool entry.
532 klass = ConstantPool::klass_at_if_loaded(cpool, index);
533 // Try to look it up by name.
534 if (klass == NULL) {
535 klass_name = cpool->klass_name_at(index);
536 }
537 }
538
539 if (klass == NULL) {
540 // Not found in constant pool. Use the name to do the lookup.
541 ciKlass* k = get_klass_by_name_impl(accessor,
542 cpool,
543 get_symbol(klass_name),
544 false);
545 // Calculate accessibility the hard way.
546 if (!k->is_loaded()) {
547 is_accessible = false;
548 } else if (k->loader() != accessor->loader() &&
549 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
550 // Loaded only remotely. Not linked yet.
551 is_accessible = false;
552 } else {
553 // Linked locally, and we must also check public/private, etc.
554 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
555 }
556 return k;
557 }
558
559 // Check for prior unloaded klass. The SystemDictionary's answers
560 // can vary over time but the compiler needs consistency.
561 ciSymbol* name = get_symbol(klass->name());
562 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
563 if (unloaded_klass != NULL) {
564 is_accessible = false;
565 return unloaded_klass;
566 }
567
568 // It is known to be accessible, since it was found in the constant pool.
569 is_accessible = true;
570 return get_klass(klass);
571 }
572
573 // ------------------------------------------------------------------
574 // ciEnv::get_klass_by_index
575 //
576 // Get a klass from the constant pool.
get_klass_by_index(const constantPoolHandle & cpool,int index,bool & is_accessible,ciInstanceKlass * accessor)577 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
578 int index,
579 bool& is_accessible,
580 ciInstanceKlass* accessor) {
581 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
582 }
583
584 // ------------------------------------------------------------------
585 // ciEnv::get_constant_by_index_impl
586 //
587 // Implementation of get_constant_by_index().
get_constant_by_index_impl(const constantPoolHandle & cpool,int pool_index,int cache_index,ciInstanceKlass * accessor)588 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
589 int pool_index, int cache_index,
590 ciInstanceKlass* accessor) {
591 bool ignore_will_link;
592 EXCEPTION_CONTEXT;
593 int index = pool_index;
594 if (cache_index >= 0) {
595 assert(index < 0, "only one kind of index at a time");
596 index = cpool->object_to_cp_index(cache_index);
597 oop obj = cpool->resolved_references()->obj_at(cache_index);
598 if (obj != NULL) {
599 if (obj == Universe::the_null_sentinel()) {
600 return ciConstant(T_OBJECT, get_object(NULL));
601 }
602 BasicType bt = T_OBJECT;
603 if (cpool->tag_at(index).is_dynamic_constant())
604 bt = FieldType::basic_type(cpool->uncached_signature_ref_at(index));
605 if (is_reference_type(bt)) {
606 } else {
607 // we have to unbox the primitive value
608 if (!is_java_primitive(bt)) return ciConstant();
609 jvalue value;
610 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
611 assert(bt2 == bt, "");
612 switch (bt2) {
613 case T_DOUBLE: return ciConstant(value.d);
614 case T_FLOAT: return ciConstant(value.f);
615 case T_LONG: return ciConstant(value.j);
616 case T_INT: return ciConstant(bt2, value.i);
617 case T_SHORT: return ciConstant(bt2, value.s);
618 case T_BYTE: return ciConstant(bt2, value.b);
619 case T_CHAR: return ciConstant(bt2, value.c);
620 case T_BOOLEAN: return ciConstant(bt2, value.z);
621 default: return ciConstant();
622 }
623 }
624 ciObject* ciobj = get_object(obj);
625 if (ciobj->is_array()) {
626 return ciConstant(T_ARRAY, ciobj);
627 } else {
628 assert(ciobj->is_instance(), "should be an instance");
629 return ciConstant(T_OBJECT, ciobj);
630 }
631 }
632 }
633 constantTag tag = cpool->tag_at(index);
634 if (tag.is_int()) {
635 return ciConstant(T_INT, (jint)cpool->int_at(index));
636 } else if (tag.is_long()) {
637 return ciConstant((jlong)cpool->long_at(index));
638 } else if (tag.is_float()) {
639 return ciConstant((jfloat)cpool->float_at(index));
640 } else if (tag.is_double()) {
641 return ciConstant((jdouble)cpool->double_at(index));
642 } else if (tag.is_string()) {
643 oop string = NULL;
644 assert(cache_index >= 0, "should have a cache index");
645 if (cpool->is_pseudo_string_at(index)) {
646 string = cpool->pseudo_string_at(index, cache_index);
647 } else {
648 string = cpool->string_at(index, cache_index, THREAD);
649 if (HAS_PENDING_EXCEPTION) {
650 CLEAR_PENDING_EXCEPTION;
651 record_out_of_memory_failure();
652 return ciConstant();
653 }
654 }
655 ciObject* constant = get_object(string);
656 if (constant->is_array()) {
657 return ciConstant(T_ARRAY, constant);
658 } else {
659 assert (constant->is_instance(), "must be an instance, or not? ");
660 return ciConstant(T_OBJECT, constant);
661 }
662 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
663 // 4881222: allow ldc to take a class type
664 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
665 if (HAS_PENDING_EXCEPTION) {
666 CLEAR_PENDING_EXCEPTION;
667 record_out_of_memory_failure();
668 return ciConstant();
669 }
670 assert (klass->is_instance_klass() || klass->is_array_klass(),
671 "must be an instance or array klass ");
672 return ciConstant(T_OBJECT, klass->java_mirror());
673 } else if (tag.is_method_type()) {
674 // must execute Java code to link this CP entry into cache[i].f1
675 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
676 ciObject* ciobj = get_unloaded_method_type_constant(signature);
677 return ciConstant(T_OBJECT, ciobj);
678 } else if (tag.is_method_handle()) {
679 // must execute Java code to link this CP entry into cache[i].f1
680 int ref_kind = cpool->method_handle_ref_kind_at(index);
681 int callee_index = cpool->method_handle_klass_index_at(index);
682 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
683 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
684 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
685 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
686 return ciConstant(T_OBJECT, ciobj);
687 } else if (tag.is_dynamic_constant()) {
688 return ciConstant();
689 } else {
690 ShouldNotReachHere();
691 return ciConstant();
692 }
693 }
694
695 // ------------------------------------------------------------------
696 // ciEnv::get_constant_by_index
697 //
698 // Pull a constant out of the constant pool. How appropriate.
699 //
700 // Implementation note: this query is currently in no way cached.
get_constant_by_index(const constantPoolHandle & cpool,int pool_index,int cache_index,ciInstanceKlass * accessor)701 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
702 int pool_index, int cache_index,
703 ciInstanceKlass* accessor) {
704 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
705 }
706
707 // ------------------------------------------------------------------
708 // ciEnv::get_field_by_index_impl
709 //
710 // Implementation of get_field_by_index.
711 //
712 // Implementation note: the results of field lookups are cached
713 // in the accessor klass.
get_field_by_index_impl(ciInstanceKlass * accessor,int index)714 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
715 int index) {
716 ciConstantPoolCache* cache = accessor->field_cache();
717 if (cache == NULL) {
718 ciField* field = new (arena()) ciField(accessor, index);
719 return field;
720 } else {
721 ciField* field = (ciField*)cache->get(index);
722 if (field == NULL) {
723 field = new (arena()) ciField(accessor, index);
724 cache->insert(index, field);
725 }
726 return field;
727 }
728 }
729
730 // ------------------------------------------------------------------
731 // ciEnv::get_field_by_index
732 //
733 // Get a field by index from a klass's constant pool.
get_field_by_index(ciInstanceKlass * accessor,int index)734 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
735 int index) {
736 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
737 }
738
739 // ------------------------------------------------------------------
740 // ciEnv::lookup_method
741 //
742 // Perform an appropriate method lookup based on accessor, holder,
743 // name, signature, and bytecode.
lookup_method(ciInstanceKlass * accessor,ciKlass * holder,Symbol * name,Symbol * sig,Bytecodes::Code bc,constantTag tag)744 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
745 ciKlass* holder,
746 Symbol* name,
747 Symbol* sig,
748 Bytecodes::Code bc,
749 constantTag tag) {
750 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
751 assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible");
752
753 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
754 Klass* holder_klass = holder->get_Klass();
755 methodHandle dest_method;
756 LinkInfo link_info(holder_klass, name, sig, accessor_klass, LinkInfo::needs_access_check, tag);
757 switch (bc) {
758 case Bytecodes::_invokestatic:
759 dest_method =
760 LinkResolver::resolve_static_call_or_null(link_info);
761 break;
762 case Bytecodes::_invokespecial:
763 dest_method =
764 LinkResolver::resolve_special_call_or_null(link_info);
765 break;
766 case Bytecodes::_invokeinterface:
767 dest_method =
768 LinkResolver::linktime_resolve_interface_method_or_null(link_info);
769 break;
770 case Bytecodes::_invokevirtual:
771 dest_method =
772 LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
773 break;
774 default: ShouldNotReachHere();
775 }
776
777 return dest_method();
778 }
779
780
781 // ------------------------------------------------------------------
782 // ciEnv::get_method_by_index_impl
get_method_by_index_impl(const constantPoolHandle & cpool,int index,Bytecodes::Code bc,ciInstanceKlass * accessor)783 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
784 int index, Bytecodes::Code bc,
785 ciInstanceKlass* accessor) {
786 if (bc == Bytecodes::_invokedynamic) {
787 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
788 bool is_resolved = !cpce->is_f1_null();
789 // FIXME: code generation could allow for null (unlinked) call site
790 // The call site could be made patchable as follows:
791 // Load the appendix argument from the constant pool.
792 // Test the appendix argument and jump to a known deopt routine if it is null.
793 // Jump through a patchable call site, which is initially a deopt routine.
794 // Patch the call site to the nmethod entry point of the static compiled lambda form.
795 // As with other two-component call sites, both values must be independently verified.
796
797 if (is_resolved) {
798 // Get the invoker Method* from the constant pool.
799 // (The appendix argument, if any, will be noted in the method's signature.)
800 Method* adapter = cpce->f1_as_method();
801 return get_method(adapter);
802 }
803
804 // Fake a method that is equivalent to a declared method.
805 ciInstanceKlass* holder = get_instance_klass(SystemDictionary::MethodHandle_klass());
806 ciSymbol* name = ciSymbol::invokeBasic_name();
807 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
808 return get_unloaded_method(holder, name, signature, accessor);
809 } else {
810 const int holder_index = cpool->klass_ref_index_at(index);
811 bool holder_is_accessible;
812 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
813
814 // Get the method's name and signature.
815 Symbol* name_sym = cpool->name_ref_at(index);
816 Symbol* sig_sym = cpool->signature_ref_at(index);
817
818 if (cpool->has_preresolution()
819 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
820 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
821 // Short-circuit lookups for JSR 292-related call sites.
822 // That is, do not rely only on name-based lookups, because they may fail
823 // if the names are not resolvable in the boot class loader (7056328).
824 switch (bc) {
825 case Bytecodes::_invokevirtual:
826 case Bytecodes::_invokeinterface:
827 case Bytecodes::_invokespecial:
828 case Bytecodes::_invokestatic:
829 {
830 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
831 if (m != NULL) {
832 return get_method(m);
833 }
834 }
835 break;
836 default:
837 break;
838 }
839 }
840
841 if (holder_is_accessible) { // Our declared holder is loaded.
842 constantTag tag = cpool->tag_ref_at(index);
843 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
844 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
845 if (m != NULL &&
846 (bc == Bytecodes::_invokestatic
847 ? m->method_holder()->is_not_initialized()
848 : !m->method_holder()->is_loaded())) {
849 m = NULL;
850 }
851 #ifdef ASSERT
852 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
853 m = NULL;
854 }
855 #endif
856 if (m != NULL) {
857 // We found the method.
858 return get_method(m);
859 }
860 }
861
862 // Either the declared holder was not loaded, or the method could
863 // not be found. Create a dummy ciMethod to represent the failed
864 // lookup.
865 ciSymbol* name = get_symbol(name_sym);
866 ciSymbol* signature = get_symbol(sig_sym);
867 return get_unloaded_method(holder, name, signature, accessor);
868 }
869 }
870
871
872 // ------------------------------------------------------------------
873 // ciEnv::get_instance_klass_for_declared_method_holder
get_instance_klass_for_declared_method_holder(ciKlass * method_holder)874 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
875 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
876 // instead of a ciInstanceKlass. For that case simply pretend that the
877 // declared holder is Object.clone since that's where the call will bottom out.
878 // A more correct fix would trickle out through many interfaces in CI,
879 // requiring ciInstanceKlass* to become ciKlass* and many more places would
880 // require checks to make sure the expected type was found. Given that this
881 // only occurs for clone() the more extensive fix seems like overkill so
882 // instead we simply smear the array type into Object.
883 guarantee(method_holder != NULL, "no method holder");
884 if (method_holder->is_instance_klass()) {
885 return method_holder->as_instance_klass();
886 } else if (method_holder->is_array_klass()) {
887 return current()->Object_klass();
888 } else {
889 ShouldNotReachHere();
890 }
891 return NULL;
892 }
893
894
895 // ------------------------------------------------------------------
896 // ciEnv::get_method_by_index
get_method_by_index(const constantPoolHandle & cpool,int index,Bytecodes::Code bc,ciInstanceKlass * accessor)897 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
898 int index, Bytecodes::Code bc,
899 ciInstanceKlass* accessor) {
900 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
901 }
902
903
904 // ------------------------------------------------------------------
905 // ciEnv::name_buffer
name_buffer(int req_len)906 char *ciEnv::name_buffer(int req_len) {
907 if (_name_buffer_len < req_len) {
908 if (_name_buffer == NULL) {
909 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
910 _name_buffer_len = req_len;
911 } else {
912 _name_buffer =
913 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
914 _name_buffer_len = req_len;
915 }
916 }
917 return _name_buffer;
918 }
919
920 // ------------------------------------------------------------------
921 // ciEnv::is_in_vm
is_in_vm()922 bool ciEnv::is_in_vm() {
923 return JavaThread::current()->thread_state() == _thread_in_vm;
924 }
925
system_dictionary_modification_counter_changed()926 bool ciEnv::system_dictionary_modification_counter_changed() {
927 return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
928 }
929
930 // ------------------------------------------------------------------
931 // ciEnv::validate_compile_task_dependencies
932 //
933 // Check for changes during compilation (e.g. class loads, evolution,
934 // breakpoints, call site invalidation).
validate_compile_task_dependencies(ciMethod * target)935 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
936 if (failing()) return; // no need for further checks
937
938 bool counter_changed = system_dictionary_modification_counter_changed();
939 Dependencies::DepType result = dependencies()->validate_dependencies(_task, counter_changed);
940 if (result != Dependencies::end_marker) {
941 if (result == Dependencies::call_site_target_value) {
942 _inc_decompile_count_on_failure = false;
943 record_failure("call site target change");
944 } else if (Dependencies::is_klass_type(result)) {
945 record_failure("concurrent class loading");
946 } else {
947 record_failure("invalid non-klass dependency");
948 }
949 }
950 }
951
952 // ------------------------------------------------------------------
953 // ciEnv::register_method
register_method(ciMethod * target,int entry_bci,CodeOffsets * offsets,int orig_pc_offset,CodeBuffer * code_buffer,int frame_words,OopMapSet * oop_map_set,ExceptionHandlerTable * handler_table,ImplicitExceptionTable * inc_table,AbstractCompiler * compiler,bool has_unsafe_access,bool has_wide_vectors,RTMState rtm_state)954 void ciEnv::register_method(ciMethod* target,
955 int entry_bci,
956 CodeOffsets* offsets,
957 int orig_pc_offset,
958 CodeBuffer* code_buffer,
959 int frame_words,
960 OopMapSet* oop_map_set,
961 ExceptionHandlerTable* handler_table,
962 ImplicitExceptionTable* inc_table,
963 AbstractCompiler* compiler,
964 bool has_unsafe_access,
965 bool has_wide_vectors,
966 RTMState rtm_state) {
967 VM_ENTRY_MARK;
968 nmethod* nm = NULL;
969 {
970 methodHandle method(THREAD, target->get_Method());
971
972 // We require method counters to store some method state (max compilation levels) required by the compilation policy.
973 if (method->get_method_counters(THREAD) == NULL) {
974 record_failure("can't create method counters");
975 // All buffers in the CodeBuffer are allocated in the CodeCache.
976 // If the code buffer is created on each compile attempt
977 // as in C2, then it must be freed.
978 code_buffer->free_blob();
979 return;
980 }
981
982 // To prevent compile queue updates.
983 MutexLocker locker(MethodCompileQueue_lock, THREAD);
984
985 // Prevent SystemDictionary::add_to_hierarchy from running
986 // and invalidating our dependencies until we install this method.
987 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
988 MutexLocker ml(Compile_lock);
989 NoSafepointVerifier nsv;
990
991 // Change in Jvmti state may invalidate compilation.
992 if (!failing() && jvmti_state_changed()) {
993 record_failure("Jvmti state change invalidated dependencies");
994 }
995
996 // Change in DTrace flags may invalidate compilation.
997 if (!failing() &&
998 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
999 (!dtrace_method_probes() && DTraceMethodProbes) ||
1000 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1001 record_failure("DTrace flags change invalidated dependencies");
1002 }
1003
1004 if (!failing()) {
1005 if (log() != NULL) {
1006 // Log the dependencies which this compilation declares.
1007 dependencies()->log_all_dependencies();
1008 }
1009
1010 // Encode the dependencies now, so we can check them right away.
1011 dependencies()->encode_content_bytes();
1012
1013 // Check for {class loads, evolution, breakpoints, ...} during compilation
1014 validate_compile_task_dependencies(target);
1015 }
1016 #if INCLUDE_RTM_OPT
1017 if (!failing() && (rtm_state != NoRTM) &&
1018 (method()->method_data() != NULL) &&
1019 (method()->method_data()->rtm_state() != rtm_state)) {
1020 // Preemptive decompile if rtm state was changed.
1021 record_failure("RTM state change invalidated rtm code");
1022 }
1023 #endif
1024
1025 if (failing()) {
1026 // While not a true deoptimization, it is a preemptive decompile.
1027 MethodData* mdo = method()->method_data();
1028 if (mdo != NULL && _inc_decompile_count_on_failure) {
1029 mdo->inc_decompile_count();
1030 }
1031
1032 // All buffers in the CodeBuffer are allocated in the CodeCache.
1033 // If the code buffer is created on each compile attempt
1034 // as in C2, then it must be freed.
1035 code_buffer->free_blob();
1036 return;
1037 }
1038
1039 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1040 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1041
1042 nm = nmethod::new_nmethod(method,
1043 compile_id(),
1044 entry_bci,
1045 offsets,
1046 orig_pc_offset,
1047 debug_info(), dependencies(), code_buffer,
1048 frame_words, oop_map_set,
1049 handler_table, inc_table,
1050 compiler, task()->comp_level());
1051
1052 // Free codeBlobs
1053 code_buffer->free_blob();
1054
1055 if (nm != NULL) {
1056 nm->set_has_unsafe_access(has_unsafe_access);
1057 nm->set_has_wide_vectors(has_wide_vectors);
1058 #if INCLUDE_RTM_OPT
1059 nm->set_rtm_state(rtm_state);
1060 #endif
1061
1062 // Record successful registration.
1063 // (Put nm into the task handle *before* publishing to the Java heap.)
1064 if (task() != NULL) {
1065 task()->set_code(nm);
1066 }
1067
1068 if (entry_bci == InvocationEntryBci) {
1069 if (TieredCompilation) {
1070 // If there is an old version we're done with it
1071 CompiledMethod* old = method->code();
1072 if (TraceMethodReplacement && old != NULL) {
1073 ResourceMark rm;
1074 char *method_name = method->name_and_sig_as_C_string();
1075 tty->print_cr("Replacing method %s", method_name);
1076 }
1077 if (old != NULL) {
1078 old->make_not_used();
1079 }
1080 }
1081 if (TraceNMethodInstalls) {
1082 ResourceMark rm;
1083 char *method_name = method->name_and_sig_as_C_string();
1084 ttyLocker ttyl;
1085 tty->print_cr("Installing method (%d) %s ",
1086 task()->comp_level(),
1087 method_name);
1088 }
1089 // Allow the code to be executed
1090 method->set_code(method, nm);
1091 } else {
1092 if (TraceNMethodInstalls) {
1093 ResourceMark rm;
1094 char *method_name = method->name_and_sig_as_C_string();
1095 ttyLocker ttyl;
1096 tty->print_cr("Installing osr method (%d) %s @ %d",
1097 task()->comp_level(),
1098 method_name,
1099 entry_bci);
1100 }
1101 method->method_holder()->add_osr_nmethod(nm);
1102 }
1103 nm->make_in_use();
1104 }
1105 } // safepoints are allowed again
1106
1107 if (nm != NULL) {
1108 // JVMTI -- compiled method notification (must be done outside lock)
1109 nm->post_compiled_method_load_event();
1110 } else {
1111 // The CodeCache is full.
1112 record_failure("code cache is full");
1113 }
1114 }
1115
1116
1117 // ------------------------------------------------------------------
1118 // ciEnv::find_system_klass
find_system_klass(ciSymbol * klass_name)1119 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1120 VM_ENTRY_MARK;
1121 return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1122 }
1123
1124 // ------------------------------------------------------------------
1125 // ciEnv::comp_level
comp_level()1126 int ciEnv::comp_level() {
1127 if (task() == NULL) return CompLevel_highest_tier;
1128 return task()->comp_level();
1129 }
1130
1131 // ------------------------------------------------------------------
1132 // ciEnv::compile_id
compile_id()1133 uint ciEnv::compile_id() {
1134 if (task() == NULL) return 0;
1135 return task()->compile_id();
1136 }
1137
1138 // ------------------------------------------------------------------
1139 // ciEnv::notice_inlined_method()
notice_inlined_method(ciMethod * method)1140 void ciEnv::notice_inlined_method(ciMethod* method) {
1141 _num_inlined_bytecodes += method->code_size_for_inlining();
1142 }
1143
1144 // ------------------------------------------------------------------
1145 // ciEnv::num_inlined_bytecodes()
num_inlined_bytecodes() const1146 int ciEnv::num_inlined_bytecodes() const {
1147 return _num_inlined_bytecodes;
1148 }
1149
1150 // ------------------------------------------------------------------
1151 // ciEnv::record_failure()
record_failure(const char * reason)1152 void ciEnv::record_failure(const char* reason) {
1153 if (_failure_reason == NULL) {
1154 // Record the first failure reason.
1155 _failure_reason = reason;
1156 }
1157 }
1158
report_failure(const char * reason)1159 void ciEnv::report_failure(const char* reason) {
1160 EventCompilationFailure event;
1161 if (event.should_commit()) {
1162 event.set_compileId(compile_id());
1163 event.set_failureMessage(reason);
1164 event.commit();
1165 }
1166 }
1167
1168 // ------------------------------------------------------------------
1169 // ciEnv::record_method_not_compilable()
record_method_not_compilable(const char * reason,bool all_tiers)1170 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1171 int new_compilable =
1172 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1173
1174 // Only note transitions to a worse state
1175 if (new_compilable > _compilable) {
1176 if (log() != NULL) {
1177 if (all_tiers) {
1178 log()->elem("method_not_compilable");
1179 } else {
1180 log()->elem("method_not_compilable_at_tier level='%d'",
1181 current()->task()->comp_level());
1182 }
1183 }
1184 _compilable = new_compilable;
1185
1186 // Reset failure reason; this one is more important.
1187 _failure_reason = NULL;
1188 record_failure(reason);
1189 }
1190 }
1191
1192 // ------------------------------------------------------------------
1193 // ciEnv::record_out_of_memory_failure()
record_out_of_memory_failure()1194 void ciEnv::record_out_of_memory_failure() {
1195 // If memory is low, we stop compiling methods.
1196 record_method_not_compilable("out of memory");
1197 }
1198
unloaded_ciinstance()1199 ciInstance* ciEnv::unloaded_ciinstance() {
1200 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1201 }
1202
1203 // ------------------------------------------------------------------
1204 // ciEnv::dump_replay_data*
1205
1206 // Don't change thread state and acquire any locks.
1207 // Safe to call from VM error reporter.
1208
dump_compile_data(outputStream * out)1209 void ciEnv::dump_compile_data(outputStream* out) {
1210 CompileTask* task = this->task();
1211 if (task) {
1212 Method* method = task->method();
1213 int entry_bci = task->osr_bci();
1214 int comp_level = task->comp_level();
1215 out->print("compile %s %s %s %d %d",
1216 method->klass_name()->as_quoted_ascii(),
1217 method->name()->as_quoted_ascii(),
1218 method->signature()->as_quoted_ascii(),
1219 entry_bci, comp_level);
1220 if (compiler_data() != NULL) {
1221 if (is_c2_compile(comp_level)) {
1222 #ifdef COMPILER2
1223 // Dump C2 inlining data.
1224 ((Compile*)compiler_data())->dump_inline_data(out);
1225 #endif
1226 } else if (is_c1_compile(comp_level)) {
1227 #ifdef COMPILER1
1228 // Dump C1 inlining data.
1229 ((Compilation*)compiler_data())->dump_inline_data(out);
1230 #endif
1231 }
1232 }
1233 out->cr();
1234 }
1235 }
1236
dump_replay_data_unsafe(outputStream * out)1237 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1238 ResourceMark rm;
1239 #if INCLUDE_JVMTI
1240 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1241 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1242 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1243 #endif // INCLUDE_JVMTI
1244
1245 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1246 out->print_cr("# %d ciObject found", objects->length());
1247 for (int i = 0; i < objects->length(); i++) {
1248 objects->at(i)->dump_replay_data(out);
1249 }
1250 dump_compile_data(out);
1251 out->flush();
1252 }
1253
dump_replay_data(outputStream * out)1254 void ciEnv::dump_replay_data(outputStream* out) {
1255 GUARDED_VM_ENTRY(
1256 MutexLocker ml(Compile_lock);
1257 dump_replay_data_unsafe(out);
1258 )
1259 }
1260
dump_replay_data(int compile_id)1261 void ciEnv::dump_replay_data(int compile_id) {
1262 static char buffer[O_BUFLEN];
1263 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1264 if (ret > 0) {
1265 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1266 if (fd != -1) {
1267 FILE* replay_data_file = os::open(fd, "w");
1268 if (replay_data_file != NULL) {
1269 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1270 dump_replay_data(&replay_data_stream);
1271 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1272 } else {
1273 tty->print_cr("# Can't open file to dump replay data.");
1274 }
1275 }
1276 }
1277 }
1278
dump_inline_data(int compile_id)1279 void ciEnv::dump_inline_data(int compile_id) {
1280 static char buffer[O_BUFLEN];
1281 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1282 if (ret > 0) {
1283 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1284 if (fd != -1) {
1285 FILE* inline_data_file = os::open(fd, "w");
1286 if (inline_data_file != NULL) {
1287 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1288 GUARDED_VM_ENTRY(
1289 MutexLocker ml(Compile_lock);
1290 dump_compile_data(&replay_data_stream);
1291 )
1292 replay_data_stream.flush();
1293 tty->print("# Compiler inline data is saved as: ");
1294 tty->print_cr("%s", buffer);
1295 } else {
1296 tty->print_cr("# Can't open file to dump inline data.");
1297 }
1298 }
1299 }
1300 }
1301