1 /*
2 * Copyright (c) 1999, 2021, 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/ciSymbols.hpp"
36 #include "ci/ciUtilities.inline.hpp"
37 #include "classfile/javaClasses.hpp"
38 #include "classfile/symbolTable.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmClasses.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/codeCache.hpp"
43 #include "code/scopeDesc.hpp"
44 #include "compiler/compilationPolicy.hpp"
45 #include "compiler/compileBroker.hpp"
46 #include "compiler/compilerEvent.hpp"
47 #include "compiler/compileLog.hpp"
48 #include "compiler/compileTask.hpp"
49 #include "compiler/disassembler.hpp"
50 #include "gc/shared/collectedHeap.inline.hpp"
51 #include "interpreter/linkResolver.hpp"
52 #include "jfr/jfrEvents.hpp"
53 #include "logging/log.hpp"
54 #include "memory/allocation.inline.hpp"
55 #include "memory/oopFactory.hpp"
56 #include "memory/resourceArea.hpp"
57 #include "memory/universe.hpp"
58 #include "oops/constantPool.inline.hpp"
59 #include "oops/cpCache.inline.hpp"
60 #include "oops/method.inline.hpp"
61 #include "oops/methodData.hpp"
62 #include "oops/objArrayKlass.hpp"
63 #include "oops/objArrayOop.inline.hpp"
64 #include "oops/oop.inline.hpp"
65 #include "prims/jvmtiExport.hpp"
66 #include "prims/methodHandles.hpp"
67 #include "runtime/handles.inline.hpp"
68 #include "runtime/init.hpp"
69 #include "runtime/reflection.hpp"
70 #include "runtime/jniHandles.inline.hpp"
71 #include "runtime/safepointVerifiers.hpp"
72 #include "runtime/sharedRuntime.hpp"
73 #include "runtime/thread.inline.hpp"
74 #include "utilities/dtrace.hpp"
75 #include "utilities/macros.hpp"
76 #ifdef COMPILER1
77 #include "c1/c1_Runtime1.hpp"
78 #endif
79 #ifdef COMPILER2
80 #include "opto/runtime.hpp"
81 #endif
82
83 // ciEnv
84 //
85 // This class is the top level broker for requests from the compiler
86 // to the VM.
87
88 ciObject* ciEnv::_null_object_instance;
89
90 #define VM_CLASS_DEFN(name, ignore_s) ciInstanceKlass* ciEnv::_##name = NULL;
91 VM_CLASSES_DO(VM_CLASS_DEFN)
92 #undef VM_CLASS_DEFN
93
94 ciSymbol* ciEnv::_unloaded_cisymbol = NULL;
95 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
96 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
97
98 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
99 jobject ciEnv::_ArrayStoreException_handle = NULL;
100 jobject ciEnv::_ClassCastException_handle = NULL;
101
102 #ifndef PRODUCT
103 static bool firstEnv = true;
104 #endif /* PRODUCT */
105
106 // ------------------------------------------------------------------
107 // ciEnv::ciEnv
ciEnv(CompileTask * task)108 ciEnv::ciEnv(CompileTask* task)
109 : _ciEnv_arena(mtCompiler) {
110 VM_ENTRY_MARK;
111
112 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
113 thread->set_env(this);
114 assert(ciEnv::current() == this, "sanity");
115
116 _oop_recorder = NULL;
117 _debug_info = NULL;
118 _dependencies = NULL;
119 _failure_reason = NULL;
120 _inc_decompile_count_on_failure = true;
121 _compilable = MethodCompilable;
122 _break_at_compile = false;
123 _compiler_data = NULL;
124 #ifndef PRODUCT
125 assert(!firstEnv, "not initialized properly");
126 #endif /* !PRODUCT */
127
128 _num_inlined_bytecodes = 0;
129 assert(task == NULL || thread->task() == task, "sanity");
130 if (task != NULL) {
131 task->mark_started(os::elapsed_counter());
132 }
133 _task = task;
134 _log = NULL;
135
136 // Temporary buffer for creating symbols and such.
137 _name_buffer = NULL;
138 _name_buffer_len = 0;
139
140 _arena = &_ciEnv_arena;
141 _factory = new (_arena) ciObjectFactory(_arena, 128);
142
143 // Preload commonly referenced system ciObjects.
144
145 // During VM initialization, these instances have not yet been created.
146 // Assertions ensure that these instances are not accessed before
147 // their initialization.
148
149 assert(Universe::is_fully_initialized(), "should be complete");
150
151 oop o = Universe::null_ptr_exception_instance();
152 assert(o != NULL, "should have been initialized");
153 _NullPointerException_instance = get_object(o)->as_instance();
154 o = Universe::arithmetic_exception_instance();
155 assert(o != NULL, "should have been initialized");
156 _ArithmeticException_instance = get_object(o)->as_instance();
157
158 _ArrayIndexOutOfBoundsException_instance = NULL;
159 _ArrayStoreException_instance = NULL;
160 _ClassCastException_instance = NULL;
161 _the_null_string = NULL;
162 _the_min_jint_string = NULL;
163
164 _jvmti_redefinition_count = 0;
165 _jvmti_can_hotswap_or_post_breakpoint = false;
166 _jvmti_can_access_local_variables = false;
167 _jvmti_can_post_on_exceptions = false;
168 _jvmti_can_pop_frame = false;
169 }
170
ciEnv(Arena * arena)171 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
172 ASSERT_IN_VM;
173
174 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
175 CompilerThread* current_thread = CompilerThread::current();
176 assert(current_thread->env() == NULL, "must be");
177 current_thread->set_env(this);
178 assert(ciEnv::current() == this, "sanity");
179
180 _oop_recorder = NULL;
181 _debug_info = NULL;
182 _dependencies = NULL;
183 _failure_reason = NULL;
184 _inc_decompile_count_on_failure = true;
185 _compilable = MethodCompilable_never;
186 _break_at_compile = false;
187 _compiler_data = NULL;
188 #ifndef PRODUCT
189 assert(firstEnv, "must be first");
190 firstEnv = false;
191 #endif /* !PRODUCT */
192
193 _num_inlined_bytecodes = 0;
194 _task = NULL;
195 _log = NULL;
196
197 // Temporary buffer for creating symbols and such.
198 _name_buffer = NULL;
199 _name_buffer_len = 0;
200
201 _arena = arena;
202 _factory = new (_arena) ciObjectFactory(_arena, 128);
203
204 // Preload commonly referenced system ciObjects.
205
206 // During VM initialization, these instances have not yet been created.
207 // Assertions ensure that these instances are not accessed before
208 // their initialization.
209
210 assert(Universe::is_fully_initialized(), "must be");
211
212 _NullPointerException_instance = NULL;
213 _ArithmeticException_instance = NULL;
214 _ArrayIndexOutOfBoundsException_instance = NULL;
215 _ArrayStoreException_instance = NULL;
216 _ClassCastException_instance = NULL;
217 _the_null_string = NULL;
218 _the_min_jint_string = NULL;
219
220 _jvmti_redefinition_count = 0;
221 _jvmti_can_hotswap_or_post_breakpoint = false;
222 _jvmti_can_access_local_variables = false;
223 _jvmti_can_post_on_exceptions = false;
224 _jvmti_can_pop_frame = false;
225 }
226
~ciEnv()227 ciEnv::~ciEnv() {
228 GUARDED_VM_ENTRY(
229 CompilerThread* current_thread = CompilerThread::current();
230 _factory->remove_symbols();
231 // Need safepoint to clear the env on the thread. RedefineClasses might
232 // be reading it.
233 current_thread->set_env(NULL);
234 )
235 }
236
237 // ------------------------------------------------------------------
238 // Cache Jvmti state
cache_jvmti_state()239 bool ciEnv::cache_jvmti_state() {
240 VM_ENTRY_MARK;
241 // Get Jvmti capabilities under lock to get consistant values.
242 MutexLocker mu(JvmtiThreadState_lock);
243 _jvmti_redefinition_count = JvmtiExport::redefinition_count();
244 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
245 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
246 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
247 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
248 _jvmti_can_get_owned_monitor_info = JvmtiExport::can_get_owned_monitor_info();
249 _jvmti_can_walk_any_space = JvmtiExport::can_walk_any_space();
250 return _task != NULL && _task->method()->is_old();
251 }
252
jvmti_state_changed() const253 bool ciEnv::jvmti_state_changed() const {
254 // Some classes were redefined
255 if (_jvmti_redefinition_count != JvmtiExport::redefinition_count()) {
256 return true;
257 }
258
259 if (!_jvmti_can_access_local_variables &&
260 JvmtiExport::can_access_local_variables()) {
261 return true;
262 }
263 if (!_jvmti_can_hotswap_or_post_breakpoint &&
264 JvmtiExport::can_hotswap_or_post_breakpoint()) {
265 return true;
266 }
267 if (!_jvmti_can_post_on_exceptions &&
268 JvmtiExport::can_post_on_exceptions()) {
269 return true;
270 }
271 if (!_jvmti_can_pop_frame &&
272 JvmtiExport::can_pop_frame()) {
273 return true;
274 }
275 if (!_jvmti_can_get_owned_monitor_info &&
276 JvmtiExport::can_get_owned_monitor_info()) {
277 return true;
278 }
279 if (!_jvmti_can_walk_any_space &&
280 JvmtiExport::can_walk_any_space()) {
281 return true;
282 }
283
284 return false;
285 }
286
287 // ------------------------------------------------------------------
288 // Cache DTrace flags
cache_dtrace_flags()289 void ciEnv::cache_dtrace_flags() {
290 // Need lock?
291 _dtrace_extended_probes = ExtendedDTraceProbes;
292 if (_dtrace_extended_probes) {
293 _dtrace_method_probes = true;
294 _dtrace_alloc_probes = true;
295 } else {
296 _dtrace_method_probes = DTraceMethodProbes;
297 _dtrace_alloc_probes = DTraceAllocProbes;
298 }
299 }
300
301 // ------------------------------------------------------------------
302 // helper for lazy exception creation
get_or_create_exception(jobject & handle,Symbol * name)303 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
304 VM_ENTRY_MARK;
305 if (handle == NULL) {
306 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
307 InstanceKlass* ik = SystemDictionary::find_instance_klass(name, Handle(), Handle());
308 jobject objh = NULL;
309 if (ik != NULL) {
310 oop obj = ik->allocate_instance(THREAD);
311 if (!HAS_PENDING_EXCEPTION)
312 objh = JNIHandles::make_global(Handle(THREAD, obj));
313 }
314 if (HAS_PENDING_EXCEPTION) {
315 CLEAR_PENDING_EXCEPTION;
316 } else {
317 handle = objh;
318 }
319 }
320 oop obj = JNIHandles::resolve(handle);
321 return obj == NULL? NULL: get_object(obj)->as_instance();
322 }
323
ArrayIndexOutOfBoundsException_instance()324 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
325 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
326 _ArrayIndexOutOfBoundsException_instance
327 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
328 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
329 }
330 return _ArrayIndexOutOfBoundsException_instance;
331 }
ArrayStoreException_instance()332 ciInstance* ciEnv::ArrayStoreException_instance() {
333 if (_ArrayStoreException_instance == NULL) {
334 _ArrayStoreException_instance
335 = get_or_create_exception(_ArrayStoreException_handle,
336 vmSymbols::java_lang_ArrayStoreException());
337 }
338 return _ArrayStoreException_instance;
339 }
ClassCastException_instance()340 ciInstance* ciEnv::ClassCastException_instance() {
341 if (_ClassCastException_instance == NULL) {
342 _ClassCastException_instance
343 = get_or_create_exception(_ClassCastException_handle,
344 vmSymbols::java_lang_ClassCastException());
345 }
346 return _ClassCastException_instance;
347 }
348
the_null_string()349 ciInstance* ciEnv::the_null_string() {
350 if (_the_null_string == NULL) {
351 VM_ENTRY_MARK;
352 _the_null_string = get_object(Universe::the_null_string())->as_instance();
353 }
354 return _the_null_string;
355 }
356
the_min_jint_string()357 ciInstance* ciEnv::the_min_jint_string() {
358 if (_the_min_jint_string == NULL) {
359 VM_ENTRY_MARK;
360 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
361 }
362 return _the_min_jint_string;
363 }
364
365 // ------------------------------------------------------------------
366 // ciEnv::get_method_from_handle
get_method_from_handle(Method * method)367 ciMethod* ciEnv::get_method_from_handle(Method* method) {
368 VM_ENTRY_MARK;
369 return get_metadata(method)->as_method();
370 }
371
372 // ------------------------------------------------------------------
373 // ciEnv::check_klass_accessiblity
374 //
375 // Note: the logic of this method should mirror the logic of
376 // ConstantPool::verify_constant_pool_resolve.
check_klass_accessibility(ciKlass * accessing_klass,Klass * resolved_klass)377 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
378 Klass* resolved_klass) {
379 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
380 return true;
381 }
382 if (accessing_klass->is_obj_array_klass()) {
383 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
384 }
385 if (!accessing_klass->is_instance_klass()) {
386 return true;
387 }
388
389 if (resolved_klass->is_objArray_klass()) {
390 // Find the element klass, if this is an array.
391 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
392 }
393 if (resolved_klass->is_instance_klass()) {
394 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
395 InstanceKlass::cast(resolved_klass),
396 true) == Reflection::ACCESS_OK);
397 }
398 return true;
399 }
400
401 // ------------------------------------------------------------------
402 // ciEnv::get_klass_by_name_impl
get_klass_by_name_impl(ciKlass * accessing_klass,const constantPoolHandle & cpool,ciSymbol * name,bool require_local)403 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
404 const constantPoolHandle& cpool,
405 ciSymbol* name,
406 bool require_local) {
407 ASSERT_IN_VM;
408 Thread* current = Thread::current();
409
410 // Now we need to check the SystemDictionary
411 Symbol* sym = name->get_symbol();
412 if (Signature::has_envelope(sym)) {
413 // This is a name from a signature. Strip off the trimmings.
414 // Call recursive to keep scope of strippedsym.
415 TempNewSymbol strippedsym = Signature::strip_envelope(sym);
416 ciSymbol* strippedname = get_symbol(strippedsym);
417 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
418 }
419
420 // Check for prior unloaded klass. The SystemDictionary's answers
421 // can vary over time but the compiler needs consistency.
422 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
423 if (unloaded_klass != NULL) {
424 if (require_local) return NULL;
425 return unloaded_klass;
426 }
427
428 Handle loader;
429 Handle domain;
430 if (accessing_klass != NULL) {
431 loader = Handle(current, accessing_klass->loader());
432 domain = Handle(current, accessing_klass->protection_domain());
433 }
434
435 // setup up the proper type to return on OOM
436 ciKlass* fail_type;
437 if (sym->char_at(0) == JVM_SIGNATURE_ARRAY) {
438 fail_type = _unloaded_ciobjarrayklass;
439 } else {
440 fail_type = _unloaded_ciinstance_klass;
441 }
442 Klass* found_klass;
443 {
444 ttyUnlocker ttyul; // release tty lock to avoid ordering problems
445 MutexLocker ml(current, Compile_lock);
446 Klass* kls;
447 if (!require_local) {
448 kls = SystemDictionary::find_constrained_instance_or_array_klass(current, sym, loader);
449 } else {
450 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain);
451 }
452 found_klass = kls;
453 }
454
455 // If we fail to find an array klass, look again for its element type.
456 // The element type may be available either locally or via constraints.
457 // In either case, if we can find the element type in the system dictionary,
458 // we must build an array type around it. The CI requires array klasses
459 // to be loaded if their element klasses are loaded, except when memory
460 // is exhausted.
461 if (Signature::is_array(sym) &&
462 (sym->char_at(1) == JVM_SIGNATURE_ARRAY || sym->char_at(1) == JVM_SIGNATURE_CLASS)) {
463 // We have an unloaded array.
464 // Build it on the fly if the element class exists.
465 SignatureStream ss(sym, false);
466 ss.skip_array_prefix(1);
467 // Get element ciKlass recursively.
468 ciKlass* elem_klass =
469 get_klass_by_name_impl(accessing_klass,
470 cpool,
471 get_symbol(ss.as_symbol()),
472 require_local);
473 if (elem_klass != NULL && elem_klass->is_loaded()) {
474 // Now make an array for it
475 return ciObjArrayKlass::make_impl(elem_klass);
476 }
477 }
478
479 if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
480 // Look inside the constant pool for pre-resolved class entries.
481 for (int i = cpool->length() - 1; i >= 1; i--) {
482 if (cpool->tag_at(i).is_klass()) {
483 Klass* kls = cpool->resolved_klass_at(i);
484 if (kls->name() == sym) {
485 found_klass = kls;
486 break;
487 }
488 }
489 }
490 }
491
492 if (found_klass != NULL) {
493 // Found it. Build a CI handle.
494 return get_klass(found_klass);
495 }
496
497 if (require_local) return NULL;
498
499 // Not yet loaded into the VM, or not governed by loader constraints.
500 // Make a CI representative for it.
501 return get_unloaded_klass(accessing_klass, name);
502 }
503
504 // ------------------------------------------------------------------
505 // ciEnv::get_klass_by_name
get_klass_by_name(ciKlass * accessing_klass,ciSymbol * klass_name,bool require_local)506 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
507 ciSymbol* klass_name,
508 bool require_local) {
509 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
510 constantPoolHandle(),
511 klass_name,
512 require_local);)
513 }
514
515 // ------------------------------------------------------------------
516 // ciEnv::get_klass_by_index_impl
517 //
518 // Implementation of get_klass_by_index.
get_klass_by_index_impl(const constantPoolHandle & cpool,int index,bool & is_accessible,ciInstanceKlass * accessor)519 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
520 int index,
521 bool& is_accessible,
522 ciInstanceKlass* accessor) {
523 EXCEPTION_CONTEXT;
524 Klass* klass = NULL;
525 Symbol* klass_name = NULL;
526
527 if (cpool->tag_at(index).is_symbol()) {
528 klass_name = cpool->symbol_at(index);
529 } else {
530 // Check if it's resolved if it's not a symbol constant pool entry.
531 klass = ConstantPool::klass_at_if_loaded(cpool, index);
532 // Try to look it up by name.
533 if (klass == NULL) {
534 klass_name = cpool->klass_name_at(index);
535 }
536 }
537
538 if (klass == NULL) {
539 // Not found in constant pool. Use the name to do the lookup.
540 ciKlass* k = get_klass_by_name_impl(accessor,
541 cpool,
542 get_symbol(klass_name),
543 false);
544 // Calculate accessibility the hard way.
545 if (!k->is_loaded()) {
546 is_accessible = false;
547 } else if (k->loader() != accessor->loader() &&
548 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
549 // Loaded only remotely. Not linked yet.
550 is_accessible = false;
551 } else {
552 // Linked locally, and we must also check public/private, etc.
553 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
554 }
555 return k;
556 }
557
558 // Check for prior unloaded klass. The SystemDictionary's answers
559 // can vary over time but the compiler needs consistency.
560 ciSymbol* name = get_symbol(klass->name());
561 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
562 if (unloaded_klass != NULL) {
563 is_accessible = false;
564 return unloaded_klass;
565 }
566
567 // It is known to be accessible, since it was found in the constant pool.
568 is_accessible = true;
569 return get_klass(klass);
570 }
571
572 // ------------------------------------------------------------------
573 // ciEnv::get_klass_by_index
574 //
575 // Get a klass from the constant pool.
get_klass_by_index(const constantPoolHandle & cpool,int index,bool & is_accessible,ciInstanceKlass * accessor)576 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
577 int index,
578 bool& is_accessible,
579 ciInstanceKlass* accessor) {
580 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
581 }
582
583 // ------------------------------------------------------------------
584 // ciEnv::get_constant_by_index_impl
585 //
586 // Implementation of get_constant_by_index().
get_constant_by_index_impl(const constantPoolHandle & cpool,int pool_index,int cache_index,ciInstanceKlass * accessor)587 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
588 int pool_index, int cache_index,
589 ciInstanceKlass* accessor) {
590 bool ignore_will_link;
591 EXCEPTION_CONTEXT;
592 int index = pool_index;
593 if (cache_index >= 0) {
594 assert(index < 0, "only one kind of index at a time");
595 index = cpool->object_to_cp_index(cache_index);
596 oop obj = cpool->resolved_references()->obj_at(cache_index);
597 if (obj != NULL) {
598 if (obj == Universe::the_null_sentinel()) {
599 return ciConstant(T_OBJECT, get_object(NULL));
600 }
601 BasicType bt = T_OBJECT;
602 if (cpool->tag_at(index).is_dynamic_constant())
603 bt = Signature::basic_type(cpool->uncached_signature_ref_at(index));
604 if (is_reference_type(bt)) {
605 } else {
606 // we have to unbox the primitive value
607 if (!is_java_primitive(bt)) return ciConstant();
608 jvalue value;
609 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
610 assert(bt2 == bt, "");
611 switch (bt2) {
612 case T_DOUBLE: return ciConstant(value.d);
613 case T_FLOAT: return ciConstant(value.f);
614 case T_LONG: return ciConstant(value.j);
615 case T_INT: return ciConstant(bt2, value.i);
616 case T_SHORT: return ciConstant(bt2, value.s);
617 case T_BYTE: return ciConstant(bt2, value.b);
618 case T_CHAR: return ciConstant(bt2, value.c);
619 case T_BOOLEAN: return ciConstant(bt2, value.z);
620 default: return ciConstant();
621 }
622 }
623 ciObject* ciobj = get_object(obj);
624 if (ciobj->is_array()) {
625 return ciConstant(T_ARRAY, ciobj);
626 } else {
627 assert(ciobj->is_instance(), "should be an instance");
628 return ciConstant(T_OBJECT, ciobj);
629 }
630 }
631 }
632 constantTag tag = cpool->tag_at(index);
633 if (tag.is_int()) {
634 return ciConstant(T_INT, (jint)cpool->int_at(index));
635 } else if (tag.is_long()) {
636 return ciConstant((jlong)cpool->long_at(index));
637 } else if (tag.is_float()) {
638 return ciConstant((jfloat)cpool->float_at(index));
639 } else if (tag.is_double()) {
640 return ciConstant((jdouble)cpool->double_at(index));
641 } else if (tag.is_string()) {
642 oop string = NULL;
643 assert(cache_index >= 0, "should have a cache index");
644 string = cpool->string_at(index, cache_index, THREAD);
645 if (HAS_PENDING_EXCEPTION) {
646 CLEAR_PENDING_EXCEPTION;
647 record_out_of_memory_failure();
648 return ciConstant();
649 }
650 ciObject* constant = get_object(string);
651 if (constant->is_array()) {
652 return ciConstant(T_ARRAY, constant);
653 } else {
654 assert (constant->is_instance(), "must be an instance, or not? ");
655 return ciConstant(T_OBJECT, constant);
656 }
657 } else if (tag.is_unresolved_klass_in_error()) {
658 return ciConstant();
659 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
660 // 4881222: allow ldc to take a class type
661 ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
662 if (HAS_PENDING_EXCEPTION) {
663 CLEAR_PENDING_EXCEPTION;
664 record_out_of_memory_failure();
665 return ciConstant();
666 }
667 assert (klass->is_instance_klass() || klass->is_array_klass(),
668 "must be an instance or array klass ");
669 return ciConstant(T_OBJECT, klass->java_mirror());
670 } else if (tag.is_method_type()) {
671 // must execute Java code to link this CP entry into cache[i].f1
672 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
673 ciObject* ciobj = get_unloaded_method_type_constant(signature);
674 return ciConstant(T_OBJECT, ciobj);
675 } else if (tag.is_method_handle()) {
676 // must execute Java code to link this CP entry into cache[i].f1
677 int ref_kind = cpool->method_handle_ref_kind_at(index);
678 int callee_index = cpool->method_handle_klass_index_at(index);
679 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
680 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
681 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
682 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
683 return ciConstant(T_OBJECT, ciobj);
684 } else if (tag.is_dynamic_constant()) {
685 return ciConstant();
686 } else {
687 ShouldNotReachHere();
688 return ciConstant();
689 }
690 }
691
692 // ------------------------------------------------------------------
693 // ciEnv::get_constant_by_index
694 //
695 // Pull a constant out of the constant pool. How appropriate.
696 //
697 // 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)698 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
699 int pool_index, int cache_index,
700 ciInstanceKlass* accessor) {
701 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
702 }
703
704 // ------------------------------------------------------------------
705 // ciEnv::get_field_by_index_impl
706 //
707 // Implementation of get_field_by_index.
708 //
709 // Implementation note: the results of field lookups are cached
710 // in the accessor klass.
get_field_by_index_impl(ciInstanceKlass * accessor,int index)711 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
712 int index) {
713 ciConstantPoolCache* cache = accessor->field_cache();
714 if (cache == NULL) {
715 ciField* field = new (arena()) ciField(accessor, index);
716 return field;
717 } else {
718 ciField* field = (ciField*)cache->get(index);
719 if (field == NULL) {
720 field = new (arena()) ciField(accessor, index);
721 cache->insert(index, field);
722 }
723 return field;
724 }
725 }
726
727 // ------------------------------------------------------------------
728 // ciEnv::get_field_by_index
729 //
730 // Get a field by index from a klass's constant pool.
get_field_by_index(ciInstanceKlass * accessor,int index)731 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
732 int index) {
733 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
734 }
735
736 // ------------------------------------------------------------------
737 // ciEnv::lookup_method
738 //
739 // Perform an appropriate method lookup based on accessor, holder,
740 // name, signature, and bytecode.
lookup_method(ciInstanceKlass * accessor,ciKlass * holder,Symbol * name,Symbol * sig,Bytecodes::Code bc,constantTag tag)741 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
742 ciKlass* holder,
743 Symbol* name,
744 Symbol* sig,
745 Bytecodes::Code bc,
746 constantTag tag) {
747 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
748 Klass* holder_klass = holder->get_Klass();
749
750 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
751 assert(check_klass_accessibility(accessor, holder_klass), "holder not accessible");
752
753 LinkInfo link_info(holder_klass, name, sig, accessor_klass,
754 LinkInfo::AccessCheck::required,
755 LinkInfo::LoaderConstraintCheck::required,
756 tag);
757 switch (bc) {
758 case Bytecodes::_invokestatic:
759 return LinkResolver::resolve_static_call_or_null(link_info);
760 case Bytecodes::_invokespecial:
761 return LinkResolver::resolve_special_call_or_null(link_info);
762 case Bytecodes::_invokeinterface:
763 return LinkResolver::linktime_resolve_interface_method_or_null(link_info);
764 case Bytecodes::_invokevirtual:
765 return LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
766 default:
767 fatal("Unhandled bytecode: %s", Bytecodes::name(bc));
768 return NULL; // silence compiler warnings
769 }
770 }
771
772
773 // ------------------------------------------------------------------
774 // ciEnv::get_method_by_index_impl
get_method_by_index_impl(const constantPoolHandle & cpool,int index,Bytecodes::Code bc,ciInstanceKlass * accessor)775 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
776 int index, Bytecodes::Code bc,
777 ciInstanceKlass* accessor) {
778 assert(cpool.not_null(), "need constant pool");
779 assert(accessor != NULL, "need origin of access");
780 if (bc == Bytecodes::_invokedynamic) {
781 ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
782 bool is_resolved = !cpce->is_f1_null();
783 // FIXME: code generation could allow for null (unlinked) call site
784 // The call site could be made patchable as follows:
785 // Load the appendix argument from the constant pool.
786 // Test the appendix argument and jump to a known deopt routine if it is null.
787 // Jump through a patchable call site, which is initially a deopt routine.
788 // Patch the call site to the nmethod entry point of the static compiled lambda form.
789 // As with other two-component call sites, both values must be independently verified.
790
791 if (is_resolved) {
792 // Get the invoker Method* from the constant pool.
793 // (The appendix argument, if any, will be noted in the method's signature.)
794 Method* adapter = cpce->f1_as_method();
795 return get_method(adapter);
796 }
797
798 // Fake a method that is equivalent to a declared method.
799 ciInstanceKlass* holder = get_instance_klass(vmClasses::MethodHandle_klass());
800 ciSymbol* name = ciSymbols::invokeBasic_name();
801 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index));
802 return get_unloaded_method(holder, name, signature, accessor);
803 } else {
804 const int holder_index = cpool->klass_ref_index_at(index);
805 bool holder_is_accessible;
806 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
807
808 // Get the method's name and signature.
809 Symbol* name_sym = cpool->name_ref_at(index);
810 Symbol* sig_sym = cpool->signature_ref_at(index);
811
812 if (cpool->has_preresolution()
813 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
814 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
815 // Short-circuit lookups for JSR 292-related call sites.
816 // That is, do not rely only on name-based lookups, because they may fail
817 // if the names are not resolvable in the boot class loader (7056328).
818 switch (bc) {
819 case Bytecodes::_invokevirtual:
820 case Bytecodes::_invokeinterface:
821 case Bytecodes::_invokespecial:
822 case Bytecodes::_invokestatic:
823 {
824 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
825 if (m != NULL) {
826 return get_method(m);
827 }
828 }
829 break;
830 default:
831 break;
832 }
833 }
834
835 if (holder_is_accessible) { // Our declared holder is loaded.
836 constantTag tag = cpool->tag_ref_at(index);
837 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
838 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
839 if (m != NULL &&
840 (bc == Bytecodes::_invokestatic
841 ? m->method_holder()->is_not_initialized()
842 : !m->method_holder()->is_loaded())) {
843 m = NULL;
844 }
845 #ifdef ASSERT
846 if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
847 m = NULL;
848 }
849 #endif
850 if (m != NULL) {
851 // We found the method.
852 return get_method(m);
853 }
854 }
855
856 // Either the declared holder was not loaded, or the method could
857 // not be found. Create a dummy ciMethod to represent the failed
858 // lookup.
859 ciSymbol* name = get_symbol(name_sym);
860 ciSymbol* signature = get_symbol(sig_sym);
861 return get_unloaded_method(holder, name, signature, accessor);
862 }
863 }
864
865
866 // ------------------------------------------------------------------
867 // ciEnv::get_instance_klass_for_declared_method_holder
get_instance_klass_for_declared_method_holder(ciKlass * method_holder)868 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
869 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
870 // instead of a ciInstanceKlass. For that case simply pretend that the
871 // declared holder is Object.clone since that's where the call will bottom out.
872 // A more correct fix would trickle out through many interfaces in CI,
873 // requiring ciInstanceKlass* to become ciKlass* and many more places would
874 // require checks to make sure the expected type was found. Given that this
875 // only occurs for clone() the more extensive fix seems like overkill so
876 // instead we simply smear the array type into Object.
877 guarantee(method_holder != NULL, "no method holder");
878 if (method_holder->is_instance_klass()) {
879 return method_holder->as_instance_klass();
880 } else if (method_holder->is_array_klass()) {
881 return current()->Object_klass();
882 } else {
883 ShouldNotReachHere();
884 }
885 return NULL;
886 }
887
888
889 // ------------------------------------------------------------------
890 // ciEnv::get_method_by_index
get_method_by_index(const constantPoolHandle & cpool,int index,Bytecodes::Code bc,ciInstanceKlass * accessor)891 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
892 int index, Bytecodes::Code bc,
893 ciInstanceKlass* accessor) {
894 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
895 }
896
897
898 // ------------------------------------------------------------------
899 // ciEnv::name_buffer
name_buffer(int req_len)900 char *ciEnv::name_buffer(int req_len) {
901 if (_name_buffer_len < req_len) {
902 if (_name_buffer == NULL) {
903 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
904 _name_buffer_len = req_len;
905 } else {
906 _name_buffer =
907 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
908 _name_buffer_len = req_len;
909 }
910 }
911 return _name_buffer;
912 }
913
914 // ------------------------------------------------------------------
915 // ciEnv::is_in_vm
is_in_vm()916 bool ciEnv::is_in_vm() {
917 return JavaThread::current()->thread_state() == _thread_in_vm;
918 }
919
920 // ------------------------------------------------------------------
921 // ciEnv::validate_compile_task_dependencies
922 //
923 // Check for changes during compilation (e.g. class loads, evolution,
924 // breakpoints, call site invalidation).
validate_compile_task_dependencies(ciMethod * target)925 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
926 if (failing()) return; // no need for further checks
927
928 Dependencies::DepType result = dependencies()->validate_dependencies(_task);
929 if (result != Dependencies::end_marker) {
930 if (result == Dependencies::call_site_target_value) {
931 _inc_decompile_count_on_failure = false;
932 record_failure("call site target change");
933 } else if (Dependencies::is_klass_type(result)) {
934 record_failure("concurrent class loading");
935 } else {
936 record_failure("invalid non-klass dependency");
937 }
938 }
939 }
940
941 // ------------------------------------------------------------------
942 // 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,const GrowableArrayView<RuntimeStub * > & native_invokers)943 void ciEnv::register_method(ciMethod* target,
944 int entry_bci,
945 CodeOffsets* offsets,
946 int orig_pc_offset,
947 CodeBuffer* code_buffer,
948 int frame_words,
949 OopMapSet* oop_map_set,
950 ExceptionHandlerTable* handler_table,
951 ImplicitExceptionTable* inc_table,
952 AbstractCompiler* compiler,
953 bool has_unsafe_access,
954 bool has_wide_vectors,
955 RTMState rtm_state,
956 const GrowableArrayView<RuntimeStub*>& native_invokers) {
957 VM_ENTRY_MARK;
958 nmethod* nm = NULL;
959 {
960 methodHandle method(THREAD, target->get_Method());
961
962 // We require method counters to store some method state (max compilation levels) required by the compilation policy.
963 if (method->get_method_counters(THREAD) == NULL) {
964 record_failure("can't create method counters");
965 // All buffers in the CodeBuffer are allocated in the CodeCache.
966 // If the code buffer is created on each compile attempt
967 // as in C2, then it must be freed.
968 code_buffer->free_blob();
969 return;
970 }
971
972 // To prevent compile queue updates.
973 MutexLocker locker(THREAD, MethodCompileQueue_lock);
974
975 // Prevent SystemDictionary::add_to_hierarchy from running
976 // and invalidating our dependencies until we install this method.
977 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
978 MutexLocker ml(Compile_lock);
979 NoSafepointVerifier nsv;
980
981 // Change in Jvmti state may invalidate compilation.
982 if (!failing() && jvmti_state_changed()) {
983 record_failure("Jvmti state change invalidated dependencies");
984 }
985
986 // Change in DTrace flags may invalidate compilation.
987 if (!failing() &&
988 ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
989 (!dtrace_method_probes() && DTraceMethodProbes) ||
990 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
991 record_failure("DTrace flags change invalidated dependencies");
992 }
993
994 if (!failing() && target->needs_clinit_barrier() &&
995 target->holder()->is_in_error_state()) {
996 record_failure("method holder is in error state");
997 }
998
999 if (!failing()) {
1000 if (log() != NULL) {
1001 // Log the dependencies which this compilation declares.
1002 dependencies()->log_all_dependencies();
1003 }
1004
1005 // Encode the dependencies now, so we can check them right away.
1006 dependencies()->encode_content_bytes();
1007
1008 // Check for {class loads, evolution, breakpoints, ...} during compilation
1009 validate_compile_task_dependencies(target);
1010 }
1011 #if INCLUDE_RTM_OPT
1012 if (!failing() && (rtm_state != NoRTM) &&
1013 (method()->method_data() != NULL) &&
1014 (method()->method_data()->rtm_state() != rtm_state)) {
1015 // Preemptive decompile if rtm state was changed.
1016 record_failure("RTM state change invalidated rtm code");
1017 }
1018 #endif
1019
1020 if (failing()) {
1021 // While not a true deoptimization, it is a preemptive decompile.
1022 MethodData* mdo = method()->method_data();
1023 if (mdo != NULL && _inc_decompile_count_on_failure) {
1024 mdo->inc_decompile_count();
1025 }
1026
1027 // All buffers in the CodeBuffer are allocated in the CodeCache.
1028 // If the code buffer is created on each compile attempt
1029 // as in C2, then it must be freed.
1030 code_buffer->free_blob();
1031 return;
1032 }
1033
1034 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1035 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1036
1037 nm = nmethod::new_nmethod(method,
1038 compile_id(),
1039 entry_bci,
1040 offsets,
1041 orig_pc_offset,
1042 debug_info(), dependencies(), code_buffer,
1043 frame_words, oop_map_set,
1044 handler_table, inc_table,
1045 compiler, task()->comp_level(),
1046 native_invokers);
1047
1048 // Free codeBlobs
1049 code_buffer->free_blob();
1050
1051 if (nm != NULL) {
1052 nm->set_has_unsafe_access(has_unsafe_access);
1053 nm->set_has_wide_vectors(has_wide_vectors);
1054 #if INCLUDE_RTM_OPT
1055 nm->set_rtm_state(rtm_state);
1056 #endif
1057
1058 // Record successful registration.
1059 // (Put nm into the task handle *before* publishing to the Java heap.)
1060 if (task() != NULL) {
1061 task()->set_code(nm);
1062 }
1063
1064 if (entry_bci == InvocationEntryBci) {
1065 if (TieredCompilation) {
1066 // If there is an old version we're done with it
1067 CompiledMethod* old = method->code();
1068 if (TraceMethodReplacement && old != NULL) {
1069 ResourceMark rm;
1070 char *method_name = method->name_and_sig_as_C_string();
1071 tty->print_cr("Replacing method %s", method_name);
1072 }
1073 if (old != NULL) {
1074 old->make_not_used();
1075 }
1076 }
1077
1078 LogTarget(Info, nmethod, install) lt;
1079 if (lt.is_enabled()) {
1080 ResourceMark rm;
1081 char *method_name = method->name_and_sig_as_C_string();
1082 lt.print("Installing method (%d) %s ",
1083 task()->comp_level(), method_name);
1084 }
1085 // Allow the code to be executed
1086 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
1087 if (nm->make_in_use()) {
1088 method->set_code(method, nm);
1089 }
1090 } else {
1091 LogTarget(Info, nmethod, install) lt;
1092 if (lt.is_enabled()) {
1093 ResourceMark rm;
1094 char *method_name = method->name_and_sig_as_C_string();
1095 lt.print("Installing osr method (%d) %s @ %d",
1096 task()->comp_level(), method_name, entry_bci);
1097 }
1098 MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
1099 if (nm->make_in_use()) {
1100 method->method_holder()->add_osr_nmethod(nm);
1101 }
1102 }
1103 }
1104 } // safepoints are allowed again
1105
1106 if (nm != NULL) {
1107 // JVMTI -- compiled method notification (must be done outside lock)
1108 nm->post_compiled_method_load_event();
1109 } else {
1110 // The CodeCache is full.
1111 record_failure("code cache is full");
1112 }
1113 }
1114
1115 // ------------------------------------------------------------------
1116 // ciEnv::comp_level
comp_level()1117 int ciEnv::comp_level() {
1118 if (task() == NULL) return CompilationPolicy::highest_compile_level();
1119 return task()->comp_level();
1120 }
1121
1122 // ------------------------------------------------------------------
1123 // ciEnv::compile_id
compile_id()1124 uint ciEnv::compile_id() {
1125 if (task() == NULL) return 0;
1126 return task()->compile_id();
1127 }
1128
1129 // ------------------------------------------------------------------
1130 // ciEnv::notice_inlined_method()
notice_inlined_method(ciMethod * method)1131 void ciEnv::notice_inlined_method(ciMethod* method) {
1132 _num_inlined_bytecodes += method->code_size_for_inlining();
1133 }
1134
1135 // ------------------------------------------------------------------
1136 // ciEnv::num_inlined_bytecodes()
num_inlined_bytecodes() const1137 int ciEnv::num_inlined_bytecodes() const {
1138 return _num_inlined_bytecodes;
1139 }
1140
1141 // ------------------------------------------------------------------
1142 // ciEnv::record_failure()
record_failure(const char * reason)1143 void ciEnv::record_failure(const char* reason) {
1144 if (_failure_reason == NULL) {
1145 // Record the first failure reason.
1146 _failure_reason = reason;
1147 }
1148 }
1149
report_failure(const char * reason)1150 void ciEnv::report_failure(const char* reason) {
1151 EventCompilationFailure event;
1152 if (event.should_commit()) {
1153 CompilerEvent::CompilationFailureEvent::post(event, compile_id(), reason);
1154 }
1155 }
1156
1157 // ------------------------------------------------------------------
1158 // ciEnv::record_method_not_compilable()
record_method_not_compilable(const char * reason,bool all_tiers)1159 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1160 int new_compilable =
1161 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1162
1163 // Only note transitions to a worse state
1164 if (new_compilable > _compilable) {
1165 if (log() != NULL) {
1166 if (all_tiers) {
1167 log()->elem("method_not_compilable");
1168 } else {
1169 log()->elem("method_not_compilable_at_tier level='%d'",
1170 current()->task()->comp_level());
1171 }
1172 }
1173 _compilable = new_compilable;
1174
1175 // Reset failure reason; this one is more important.
1176 _failure_reason = NULL;
1177 record_failure(reason);
1178 }
1179 }
1180
1181 // ------------------------------------------------------------------
1182 // ciEnv::record_out_of_memory_failure()
record_out_of_memory_failure()1183 void ciEnv::record_out_of_memory_failure() {
1184 // If memory is low, we stop compiling methods.
1185 record_method_not_compilable("out of memory");
1186 }
1187
unloaded_ciinstance()1188 ciInstance* ciEnv::unloaded_ciinstance() {
1189 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1190 }
1191
1192 // ------------------------------------------------------------------
1193 // ciEnv::dump_replay_data*
1194
1195 // Don't change thread state and acquire any locks.
1196 // Safe to call from VM error reporter.
1197
dump_compile_data(outputStream * out)1198 void ciEnv::dump_compile_data(outputStream* out) {
1199 CompileTask* task = this->task();
1200 if (task) {
1201 Method* method = task->method();
1202 int entry_bci = task->osr_bci();
1203 int comp_level = task->comp_level();
1204 out->print("compile %s %s %s %d %d",
1205 method->klass_name()->as_quoted_ascii(),
1206 method->name()->as_quoted_ascii(),
1207 method->signature()->as_quoted_ascii(),
1208 entry_bci, comp_level);
1209 if (compiler_data() != NULL) {
1210 if (is_c2_compile(comp_level)) {
1211 #ifdef COMPILER2
1212 // Dump C2 inlining data.
1213 ((Compile*)compiler_data())->dump_inline_data(out);
1214 #endif
1215 } else if (is_c1_compile(comp_level)) {
1216 #ifdef COMPILER1
1217 // Dump C1 inlining data.
1218 ((Compilation*)compiler_data())->dump_inline_data(out);
1219 #endif
1220 }
1221 }
1222 out->cr();
1223 }
1224 }
1225
dump_replay_data_unsafe(outputStream * out)1226 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1227 ResourceMark rm;
1228 #if INCLUDE_JVMTI
1229 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1230 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1231 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1232 #endif // INCLUDE_JVMTI
1233
1234 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1235 out->print_cr("# %d ciObject found", objects->length());
1236 for (int i = 0; i < objects->length(); i++) {
1237 objects->at(i)->dump_replay_data(out);
1238 }
1239 dump_compile_data(out);
1240 out->flush();
1241 }
1242
dump_replay_data(outputStream * out)1243 void ciEnv::dump_replay_data(outputStream* out) {
1244 GUARDED_VM_ENTRY(
1245 MutexLocker ml(Compile_lock);
1246 dump_replay_data_unsafe(out);
1247 )
1248 }
1249
dump_replay_data(int compile_id)1250 void ciEnv::dump_replay_data(int compile_id) {
1251 static char buffer[O_BUFLEN];
1252 int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1253 if (ret > 0) {
1254 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1255 if (fd != -1) {
1256 FILE* replay_data_file = os::open(fd, "w");
1257 if (replay_data_file != NULL) {
1258 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1259 dump_replay_data(&replay_data_stream);
1260 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1261 } else {
1262 tty->print_cr("# Can't open file to dump replay data.");
1263 }
1264 }
1265 }
1266 }
1267
dump_inline_data(int compile_id)1268 void ciEnv::dump_inline_data(int compile_id) {
1269 static char buffer[O_BUFLEN];
1270 int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1271 if (ret > 0) {
1272 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1273 if (fd != -1) {
1274 FILE* inline_data_file = os::open(fd, "w");
1275 if (inline_data_file != NULL) {
1276 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1277 GUARDED_VM_ENTRY(
1278 MutexLocker ml(Compile_lock);
1279 dump_compile_data(&replay_data_stream);
1280 )
1281 replay_data_stream.flush();
1282 tty->print("# Compiler inline data is saved as: ");
1283 tty->print_cr("%s", buffer);
1284 } else {
1285 tty->print_cr("# Can't open file to dump inline data.");
1286 }
1287 }
1288 }
1289 }
1290