Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/vframe.cpp @ 83:d3cd40645d0d
6681646: Relocking of a scalar replaced object during deoptimization is broken
Summary: Relocking of a thread-local object during deoptimization is broken
Reviewed-by: kbr, jrose, never
author | kvn |
---|---|
date | Tue, 01 Apr 2008 16:14:18 -0700 |
parents | a61af66fc99e |
children | d1605aabd0a1 |
rev | line source |
---|---|
0 | 1 /* |
2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_vframe.cpp.incl" | |
27 | |
28 vframe::vframe(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) | |
29 : _reg_map(reg_map), _thread(thread) { | |
30 assert(fr != NULL, "must have frame"); | |
31 _fr = *fr; | |
32 } | |
33 | |
34 vframe::vframe(const frame* fr, JavaThread* thread) | |
35 : _reg_map(thread), _thread(thread) { | |
36 assert(fr != NULL, "must have frame"); | |
37 _fr = *fr; | |
38 } | |
39 | |
40 vframe* vframe::new_vframe(const frame* f, const RegisterMap* reg_map, JavaThread* thread) { | |
41 // Interpreter frame | |
42 if (f->is_interpreted_frame()) { | |
43 return new interpretedVFrame(f, reg_map, thread); | |
44 } | |
45 | |
46 // Compiled frame | |
47 CodeBlob* cb = f->cb(); | |
48 if (cb != NULL) { | |
49 if (cb->is_nmethod()) { | |
50 nmethod* nm = (nmethod*)cb; | |
51 return new compiledVFrame(f, reg_map, thread, nm); | |
52 } | |
53 | |
54 if (f->is_runtime_frame()) { | |
55 // Skip this frame and try again. | |
56 RegisterMap temp_map = *reg_map; | |
57 frame s = f->sender(&temp_map); | |
58 return new_vframe(&s, &temp_map, thread); | |
59 } | |
60 } | |
61 | |
62 // External frame | |
63 return new externalVFrame(f, reg_map, thread); | |
64 } | |
65 | |
66 vframe* vframe::sender() const { | |
67 RegisterMap temp_map = *register_map(); | |
68 assert(is_top(), "just checking"); | |
69 if (_fr.is_entry_frame() && _fr.is_first_frame()) return NULL; | |
70 frame s = _fr.real_sender(&temp_map); | |
71 if (s.is_first_frame()) return NULL; | |
72 return vframe::new_vframe(&s, &temp_map, thread()); | |
73 } | |
74 | |
75 vframe* vframe::top() const { | |
76 vframe* vf = (vframe*) this; | |
77 while (!vf->is_top()) vf = vf->sender(); | |
78 return vf; | |
79 } | |
80 | |
81 | |
82 javaVFrame* vframe::java_sender() const { | |
83 vframe* f = sender(); | |
84 while (f != NULL) { | |
85 if (f->is_java_frame()) return javaVFrame::cast(f); | |
86 f = f->sender(); | |
87 } | |
88 return NULL; | |
89 } | |
90 | |
91 // ------------- javaVFrame -------------- | |
92 | |
93 GrowableArray<MonitorInfo*>* javaVFrame::locked_monitors() { | |
94 assert(SafepointSynchronize::is_at_safepoint() || JavaThread::current() == thread(), | |
95 "must be at safepoint or it's a java frame of the current thread"); | |
96 | |
97 GrowableArray<MonitorInfo*>* mons = monitors(); | |
98 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(mons->length()); | |
99 if (mons->is_empty()) return result; | |
100 | |
101 bool found_first_monitor = false; | |
102 ObjectMonitor *pending_monitor = thread()->current_pending_monitor(); | |
103 ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor(); | |
104 oop pending_obj = (pending_monitor != NULL ? (oop) pending_monitor->object() : NULL); | |
105 oop waiting_obj = (waiting_monitor != NULL ? (oop) waiting_monitor->object() : NULL); | |
106 | |
107 for (int index = (mons->length()-1); index >= 0; index--) { | |
108 MonitorInfo* monitor = mons->at(index); | |
109 oop obj = monitor->owner(); | |
110 if (obj == NULL) continue; // skip unowned monitor | |
111 // | |
112 // Skip the monitor that the thread is blocked to enter or waiting on | |
113 // | |
114 if (!found_first_monitor && (obj == pending_obj || obj == waiting_obj)) { | |
115 continue; | |
116 } | |
117 found_first_monitor = true; | |
118 result->append(monitor); | |
119 } | |
120 return result; | |
121 } | |
122 | |
123 static void print_locked_object_class_name(outputStream* st, Handle obj, const char* lock_state) { | |
124 if (obj.not_null()) { | |
125 st->print("\t- %s <" INTPTR_FORMAT "> ", lock_state, (address)obj()); | |
126 if (obj->klass() == SystemDictionary::class_klass()) { | |
127 klassOop target_klass = java_lang_Class::as_klassOop(obj()); | |
128 st->print_cr("(a java.lang.Class for %s)", instanceKlass::cast(target_klass)->external_name()); | |
129 } else { | |
130 Klass* k = Klass::cast(obj->klass()); | |
131 st->print_cr("(a %s)", k->external_name()); | |
132 } | |
133 } | |
134 } | |
135 | |
136 void javaVFrame::print_lock_info_on(outputStream* st, int frame_count) { | |
137 ResourceMark rm; | |
138 | |
139 // If this is the first frame, and java.lang.Object.wait(...) then print out the receiver. | |
140 if (frame_count == 0) { | |
141 if (method()->name() == vmSymbols::wait_name() && | |
142 instanceKlass::cast(method()->method_holder())->name() == vmSymbols::java_lang_Object()) { | |
143 StackValueCollection* locs = locals(); | |
144 if (!locs->is_empty()) { | |
145 StackValue* sv = locs->at(0); | |
146 if (sv->type() == T_OBJECT) { | |
147 Handle o = locs->at(0)->get_obj(); | |
148 print_locked_object_class_name(st, o, "waiting on"); | |
149 } | |
150 } | |
151 } else if (thread()->current_park_blocker() != NULL) { | |
152 oop obj = thread()->current_park_blocker(); | |
153 Klass* k = Klass::cast(obj->klass()); | |
154 st->print_cr("\t- %s <" INTPTR_FORMAT "> (a %s)", "parking to wait for ", (address)obj, k->external_name()); | |
155 } | |
156 } | |
157 | |
158 | |
159 // Print out all monitors that we have locked or are trying to lock | |
160 GrowableArray<MonitorInfo*>* mons = monitors(); | |
161 if (!mons->is_empty()) { | |
162 bool found_first_monitor = false; | |
163 for (int index = (mons->length()-1); index >= 0; index--) { | |
164 MonitorInfo* monitor = mons->at(index); | |
165 if (monitor->owner() != NULL) { | |
166 | |
167 // First, assume we have the monitor locked. If we haven't found an | |
168 // owned monitor before and this is the first frame, then we need to | |
169 // see if we have completed the lock or we are blocked trying to | |
170 // acquire it - we can only be blocked if the monitor is inflated | |
171 | |
172 const char *lock_state = "locked"; // assume we have the monitor locked | |
173 if (!found_first_monitor && frame_count == 0) { | |
174 markOop mark = monitor->owner()->mark(); | |
175 if (mark->has_monitor() && | |
176 mark->monitor() == thread()->current_pending_monitor()) { | |
177 lock_state = "waiting to lock"; | |
178 } | |
179 } | |
180 | |
181 found_first_monitor = true; | |
182 print_locked_object_class_name(st, monitor->owner(), lock_state); | |
183 } | |
184 } | |
185 } | |
186 } | |
187 | |
188 // ------------- interpretedVFrame -------------- | |
189 | |
190 u_char* interpretedVFrame::bcp() const { | |
191 return fr().interpreter_frame_bcp(); | |
192 } | |
193 | |
194 void interpretedVFrame::set_bcp(u_char* bcp) { | |
195 fr().interpreter_frame_set_bcp(bcp); | |
196 } | |
197 | |
198 intptr_t* interpretedVFrame::locals_addr_at(int offset) const { | |
199 assert(fr().is_interpreted_frame(), "frame should be an interpreted frame"); | |
200 return fr().interpreter_frame_local_at(offset); | |
201 } | |
202 | |
203 | |
204 GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const { | |
205 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5); | |
206 for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin())); | |
207 current >= fr().interpreter_frame_monitor_end(); | |
208 current = fr().previous_monitor_in_interpreter_frame(current)) { | |
83
d3cd40645d0d
6681646: Relocking of a scalar replaced object during deoptimization is broken
kvn
parents:
0
diff
changeset
|
209 result->push(new MonitorInfo(current->obj(), current->lock(), false)); |
0 | 210 } |
211 return result; | |
212 } | |
213 | |
214 int interpretedVFrame::bci() const { | |
215 return method()->bci_from(bcp()); | |
216 } | |
217 | |
218 methodOop interpretedVFrame::method() const { | |
219 return fr().interpreter_frame_method(); | |
220 } | |
221 | |
222 StackValueCollection* interpretedVFrame::locals() const { | |
223 int length = method()->max_locals(); | |
224 | |
225 if (method()->is_native()) { | |
226 // If the method is native, max_locals is not telling the truth. | |
227 // maxlocals then equals the size of parameters | |
228 length = method()->size_of_parameters(); | |
229 } | |
230 | |
231 StackValueCollection* result = new StackValueCollection(length); | |
232 | |
233 // Get oopmap describing oops and int for current bci | |
234 if (TaggedStackInterpreter) { | |
235 for(int i=0; i < length; i++) { | |
236 // Find stack location | |
237 intptr_t *addr = locals_addr_at(i); | |
238 | |
239 // Depending on oop/int put it in the right package | |
240 StackValue *sv; | |
241 frame::Tag tag = fr().interpreter_frame_local_tag(i); | |
242 if (tag == frame::TagReference) { | |
243 // oop value | |
244 Handle h(*(oop *)addr); | |
245 sv = new StackValue(h); | |
246 } else { | |
247 // integer | |
248 sv = new StackValue(*addr); | |
249 } | |
250 assert(sv != NULL, "sanity check"); | |
251 result->add(sv); | |
252 } | |
253 } else { | |
254 InterpreterOopMap oop_mask; | |
255 if (TraceDeoptimization && Verbose) { | |
256 methodHandle m_h(thread(), method()); | |
257 OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask); | |
258 } else { | |
259 method()->mask_for(bci(), &oop_mask); | |
260 } | |
261 // handle locals | |
262 for(int i=0; i < length; i++) { | |
263 // Find stack location | |
264 intptr_t *addr = locals_addr_at(i); | |
265 | |
266 // Depending on oop/int put it in the right package | |
267 StackValue *sv; | |
268 if (oop_mask.is_oop(i)) { | |
269 // oop value | |
270 Handle h(*(oop *)addr); | |
271 sv = new StackValue(h); | |
272 } else { | |
273 // integer | |
274 sv = new StackValue(*addr); | |
275 } | |
276 assert(sv != NULL, "sanity check"); | |
277 result->add(sv); | |
278 } | |
279 } | |
280 return result; | |
281 } | |
282 | |
283 void interpretedVFrame::set_locals(StackValueCollection* values) const { | |
284 if (values == NULL || values->size() == 0) return; | |
285 | |
286 int length = method()->max_locals(); | |
287 if (method()->is_native()) { | |
288 // If the method is native, max_locals is not telling the truth. | |
289 // maxlocals then equals the size of parameters | |
290 length = method()->size_of_parameters(); | |
291 } | |
292 | |
293 assert(length == values->size(), "Mismatch between actual stack format and supplied data"); | |
294 | |
295 // handle locals | |
296 for (int i = 0; i < length; i++) { | |
297 // Find stack location | |
298 intptr_t *addr = locals_addr_at(i); | |
299 | |
300 // Depending on oop/int put it in the right package | |
301 StackValue *sv = values->at(i); | |
302 assert(sv != NULL, "sanity check"); | |
303 if (sv->type() == T_OBJECT) { | |
304 *(oop *) addr = (sv->get_obj())(); | |
305 } else { // integer | |
306 *addr = sv->get_int(); | |
307 } | |
308 } | |
309 } | |
310 | |
311 StackValueCollection* interpretedVFrame::expressions() const { | |
312 int length = fr().interpreter_frame_expression_stack_size(); | |
313 if (method()->is_native()) { | |
314 // If the method is native, there is no expression stack | |
315 length = 0; | |
316 } | |
317 | |
318 int nof_locals = method()->max_locals(); | |
319 StackValueCollection* result = new StackValueCollection(length); | |
320 | |
321 if (TaggedStackInterpreter) { | |
322 // handle expressions | |
323 for(int i=0; i < length; i++) { | |
324 // Find stack location | |
325 intptr_t *addr = fr().interpreter_frame_expression_stack_at(i); | |
326 frame::Tag tag = fr().interpreter_frame_expression_stack_tag(i); | |
327 | |
328 // Depending on oop/int put it in the right package | |
329 StackValue *sv; | |
330 if (tag == frame::TagReference) { | |
331 // oop value | |
332 Handle h(*(oop *)addr); | |
333 sv = new StackValue(h); | |
334 } else { | |
335 // otherwise | |
336 sv = new StackValue(*addr); | |
337 } | |
338 assert(sv != NULL, "sanity check"); | |
339 result->add(sv); | |
340 } | |
341 } else { | |
342 InterpreterOopMap oop_mask; | |
343 // Get oopmap describing oops and int for current bci | |
344 if (TraceDeoptimization && Verbose) { | |
345 methodHandle m_h(method()); | |
346 OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask); | |
347 } else { | |
348 method()->mask_for(bci(), &oop_mask); | |
349 } | |
350 // handle expressions | |
351 for(int i=0; i < length; i++) { | |
352 // Find stack location | |
353 intptr_t *addr = fr().interpreter_frame_expression_stack_at(i); | |
354 | |
355 // Depending on oop/int put it in the right package | |
356 StackValue *sv; | |
357 if (oop_mask.is_oop(i + nof_locals)) { | |
358 // oop value | |
359 Handle h(*(oop *)addr); | |
360 sv = new StackValue(h); | |
361 } else { | |
362 // integer | |
363 sv = new StackValue(*addr); | |
364 } | |
365 assert(sv != NULL, "sanity check"); | |
366 result->add(sv); | |
367 } | |
368 } | |
369 return result; | |
370 } | |
371 | |
372 | |
373 // ------------- cChunk -------------- | |
374 | |
375 entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) | |
376 : externalVFrame(fr, reg_map, thread) {} | |
377 | |
378 | |
379 void vframeStreamCommon::found_bad_method_frame() { | |
380 // 6379830 Cut point for an assertion that occasionally fires when | |
381 // we are using the performance analyzer. | |
382 // Disable this assert when testing the analyzer with fastdebug. | |
383 // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number) | |
384 assert(false, "invalid bci or invalid scope desc"); | |
385 } | |
386 | |
387 // top-frame will be skipped | |
388 vframeStream::vframeStream(JavaThread* thread, frame top_frame, | |
389 bool stop_at_java_call_stub) : vframeStreamCommon(thread) { | |
390 _stop_at_java_call_stub = stop_at_java_call_stub; | |
391 | |
392 // skip top frame, as it may not be at safepoint | |
393 _frame = top_frame.sender(&_reg_map); | |
394 while (!fill_from_frame()) { | |
395 _frame = _frame.sender(&_reg_map); | |
396 } | |
397 } | |
398 | |
399 | |
400 // Step back n frames, skip any pseudo frames in between. | |
401 // This function is used in Class.forName, Class.newInstance, Method.Invoke, | |
402 // AccessController.doPrivileged. | |
403 // | |
404 // NOTE that in JDK 1.4 this has been exposed to Java as | |
405 // sun.reflect.Reflection.getCallerClass(), which can be inlined. | |
406 // Inlined versions must match this routine's logic. | |
407 // Native method prefixing logic does not need to match since | |
408 // the method names don't match and inlining will not occur. | |
409 // See, for example, | |
410 // Parse::inline_native_Reflection_getCallerClass in | |
411 // opto/library_call.cpp. | |
412 void vframeStreamCommon::security_get_caller_frame(int depth) { | |
413 bool use_new_reflection = JDK_Version::is_gte_jdk14x_version() && UseNewReflection; | |
414 | |
415 while (!at_end()) { | |
416 if (Universe::reflect_invoke_cache()->is_same_method(method())) { | |
417 // This is Method.invoke() -- skip it | |
418 } else if (use_new_reflection && | |
419 Klass::cast(method()->method_holder()) | |
420 ->is_subclass_of(SystemDictionary::reflect_method_accessor_klass())) { | |
421 // This is an auxilary frame -- skip it | |
422 } else { | |
423 // This is non-excluded frame, we need to count it against the depth | |
424 if (depth-- <= 0) { | |
425 // we have reached the desired depth, we are done | |
426 break; | |
427 } | |
428 } | |
429 if (method()->is_prefixed_native()) { | |
430 skip_prefixed_method_and_wrappers(); | |
431 } else { | |
432 next(); | |
433 } | |
434 } | |
435 } | |
436 | |
437 | |
438 void vframeStreamCommon::skip_prefixed_method_and_wrappers() { | |
439 ResourceMark rm; | |
440 HandleMark hm; | |
441 | |
442 int method_prefix_count = 0; | |
443 char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count); | |
444 KlassHandle prefixed_klass(method()->method_holder()); | |
445 const char* prefixed_name = method()->name()->as_C_string(); | |
446 size_t prefixed_name_len = strlen(prefixed_name); | |
447 int prefix_index = method_prefix_count-1; | |
448 | |
449 while (!at_end()) { | |
450 next(); | |
451 if (method()->method_holder() != prefixed_klass()) { | |
452 break; // classes don't match, can't be a wrapper | |
453 } | |
454 const char* name = method()->name()->as_C_string(); | |
455 size_t name_len = strlen(name); | |
456 size_t prefix_len = prefixed_name_len - name_len; | |
457 if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) { | |
458 break; // prefixed name isn't prefixed version of method name, can't be a wrapper | |
459 } | |
460 for (; prefix_index >= 0; --prefix_index) { | |
461 const char* possible_prefix = method_prefixes[prefix_index]; | |
462 size_t possible_prefix_len = strlen(possible_prefix); | |
463 if (possible_prefix_len == prefix_len && | |
464 strncmp(possible_prefix, prefixed_name, prefix_len) == 0) { | |
465 break; // matching prefix found | |
466 } | |
467 } | |
468 if (prefix_index < 0) { | |
469 break; // didn't find the prefix, can't be a wrapper | |
470 } | |
471 prefixed_name = name; | |
472 prefixed_name_len = name_len; | |
473 } | |
474 } | |
475 | |
476 | |
477 void vframeStreamCommon::skip_reflection_related_frames() { | |
478 while (!at_end() && | |
479 (JDK_Version::is_gte_jdk14x_version() && UseNewReflection && | |
480 (Klass::cast(method()->method_holder())->is_subclass_of(SystemDictionary::reflect_method_accessor_klass()) || | |
481 Klass::cast(method()->method_holder())->is_subclass_of(SystemDictionary::reflect_constructor_accessor_klass())))) { | |
482 next(); | |
483 } | |
484 } | |
485 | |
486 | |
487 #ifndef PRODUCT | |
488 void vframe::print() { | |
489 if (WizardMode) _fr.print_value_on(tty,NULL); | |
490 } | |
491 | |
492 | |
493 void vframe::print_value() const { | |
494 ((vframe*)this)->print(); | |
495 } | |
496 | |
497 | |
498 void entryVFrame::print_value() const { | |
499 ((entryVFrame*)this)->print(); | |
500 } | |
501 | |
502 void entryVFrame::print() { | |
503 vframe::print(); | |
504 tty->print_cr("C Chunk inbetween Java"); | |
505 tty->print_cr("C link " INTPTR_FORMAT, _fr.link()); | |
506 } | |
507 | |
508 | |
509 // ------------- javaVFrame -------------- | |
510 | |
511 static void print_stack_values(const char* title, StackValueCollection* values) { | |
512 if (values->is_empty()) return; | |
513 tty->print_cr("\t%s:", title); | |
514 values->print(); | |
515 } | |
516 | |
517 | |
518 void javaVFrame::print() { | |
519 ResourceMark rm; | |
520 vframe::print(); | |
521 tty->print("\t"); | |
522 method()->print_value(); | |
523 tty->cr(); | |
524 tty->print_cr("\tbci: %d", bci()); | |
525 | |
526 print_stack_values("locals", locals()); | |
527 print_stack_values("expressions", expressions()); | |
528 | |
529 GrowableArray<MonitorInfo*>* list = monitors(); | |
530 if (list->is_empty()) return; | |
531 tty->print_cr("\tmonitor list:"); | |
532 for (int index = (list->length()-1); index >= 0; index--) { | |
533 MonitorInfo* monitor = list->at(index); | |
534 tty->print("\t obj\t"); monitor->owner()->print_value(); | |
535 tty->print("(" INTPTR_FORMAT ")", (address)monitor->owner()); | |
536 tty->cr(); | |
537 tty->print("\t "); | |
538 monitor->lock()->print_on(tty); | |
539 tty->cr(); | |
540 } | |
541 } | |
542 | |
543 | |
544 void javaVFrame::print_value() const { | |
545 methodOop m = method(); | |
546 klassOop k = m->method_holder(); | |
547 tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")", | |
548 _fr.sp(), _fr.unextended_sp(), _fr.fp(), _fr.pc()); | |
549 tty->print("%s.%s", Klass::cast(k)->internal_name(), m->name()->as_C_string()); | |
550 | |
551 if (!m->is_native()) { | |
552 symbolOop source_name = instanceKlass::cast(k)->source_file_name(); | |
553 int line_number = m->line_number_from_bci(bci()); | |
554 if (source_name != NULL && (line_number != -1)) { | |
555 tty->print("(%s:%d)", source_name->as_C_string(), line_number); | |
556 } | |
557 } else { | |
558 tty->print("(Native Method)"); | |
559 } | |
560 // Check frame size and print warning if it looks suspiciously large | |
561 if (fr().sp() != NULL) { | |
562 uint size = fr().frame_size(); | |
563 #ifdef _LP64 | |
564 if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); | |
565 #else | |
566 if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); | |
567 #endif | |
568 } | |
569 } | |
570 | |
571 | |
572 bool javaVFrame::structural_compare(javaVFrame* other) { | |
573 // Check static part | |
574 if (method() != other->method()) return false; | |
575 if (bci() != other->bci()) return false; | |
576 | |
577 // Check locals | |
578 StackValueCollection *locs = locals(); | |
579 StackValueCollection *other_locs = other->locals(); | |
580 assert(locs->size() == other_locs->size(), "sanity check"); | |
581 int i; | |
582 for(i = 0; i < locs->size(); i++) { | |
583 // it might happen the compiler reports a conflict and | |
584 // the interpreter reports a bogus int. | |
585 if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue; | |
586 if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue; | |
587 | |
588 if (!locs->at(i)->equal(other_locs->at(i))) | |
589 return false; | |
590 } | |
591 | |
592 // Check expressions | |
593 StackValueCollection* exprs = expressions(); | |
594 StackValueCollection* other_exprs = other->expressions(); | |
595 assert(exprs->size() == other_exprs->size(), "sanity check"); | |
596 for(i = 0; i < exprs->size(); i++) { | |
597 if (!exprs->at(i)->equal(other_exprs->at(i))) | |
598 return false; | |
599 } | |
600 | |
601 return true; | |
602 } | |
603 | |
604 | |
605 void javaVFrame::print_activation(int index) const { | |
606 // frame number and method | |
607 tty->print("%2d - ", index); | |
608 ((vframe*)this)->print_value(); | |
609 tty->cr(); | |
610 | |
611 if (WizardMode) { | |
612 ((vframe*)this)->print(); | |
613 tty->cr(); | |
614 } | |
615 } | |
616 | |
617 | |
618 void javaVFrame::verify() const { | |
619 } | |
620 | |
621 | |
622 void interpretedVFrame::verify() const { | |
623 } | |
624 | |
625 | |
626 // ------------- externalVFrame -------------- | |
627 | |
628 void externalVFrame::print() { | |
629 _fr.print_value_on(tty,NULL); | |
630 } | |
631 | |
632 | |
633 void externalVFrame::print_value() const { | |
634 ((vframe*)this)->print(); | |
635 } | |
636 #endif // PRODUCT |