1 /*
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "code/codeCache.hpp"
30 #include "code/debugInfoRec.hpp"
31 #include "code/nmethod.hpp"
32 #include "code/pcDesc.hpp"
33 #include "code/scopeDesc.hpp"
34 #include "interpreter/interpreter.hpp"
35 #include "interpreter/oopMapCache.hpp"
36 #include "memory/resourceArea.hpp"
37 #include "oops/instanceKlass.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "runtime/frame.inline.hpp"
40 #include "runtime/handles.inline.hpp"
41 #include "runtime/objectMonitor.hpp"
42 #include "runtime/objectMonitor.inline.hpp"
43 #include "runtime/signature.hpp"
44 #include "runtime/stubRoutines.hpp"
45 #include "runtime/synchronizer.hpp"
46 #include "runtime/vframe.inline.hpp"
47 #include "runtime/vframeArray.hpp"
48 #include "runtime/vframe_hp.hpp"
49
50 vframe::vframe(const frame* fr, const RegisterMap* reg_map, JavaThread* thread)
51 : _reg_map(reg_map), _thread(thread) {
52 assert(fr != NULL, "must have frame");
53 _fr = *fr;
54 }
55
56 vframe::vframe(const frame* fr, JavaThread* thread)
57 : _reg_map(thread), _thread(thread) {
58 assert(fr != NULL, "must have frame");
59 _fr = *fr;
60 }
61
62 vframe* vframe::new_vframe(const frame* f, const RegisterMap* reg_map, JavaThread* thread) {
63 // Interpreter frame
64 if (f->is_interpreted_frame()) {
65 return new interpretedVFrame(f, reg_map, thread);
66 }
67
68 // Compiled frame
69 CodeBlob* cb = f->cb();
70 if (cb != NULL) {
71 if (cb->is_compiled()) {
72 CompiledMethod* nm = (CompiledMethod*)cb;
73 return new compiledVFrame(f, reg_map, thread, nm);
74 }
75
76 if (f->is_runtime_frame()) {
77 // Skip this frame and try again.
78 RegisterMap temp_map = *reg_map;
79 frame s = f->sender(&temp_map);
80 return new_vframe(&s, &temp_map, thread);
81 }
82 }
83
84 // External frame
85 return new externalVFrame(f, reg_map, thread);
86 }
87
88 vframe* vframe::sender() const {
89 RegisterMap temp_map = *register_map();
90 assert(is_top(), "just checking");
91 if (_fr.is_entry_frame() && _fr.is_first_frame()) return NULL;
92 frame s = _fr.real_sender(&temp_map);
93 if (s.is_first_frame()) return NULL;
94 return vframe::new_vframe(&s, &temp_map, thread());
95 }
96
97 vframe* vframe::top() const {
98 vframe* vf = (vframe*) this;
99 while (!vf->is_top()) vf = vf->sender();
100 return vf;
101 }
102
103
104 javaVFrame* vframe::java_sender() const {
105 vframe* f = sender();
106 while (f != NULL) {
107 if (f->is_java_frame()) return javaVFrame::cast(f);
108 f = f->sender();
109 }
110 return NULL;
111 }
112
113 // ------------- javaVFrame --------------
114
115 GrowableArray<MonitorInfo*>* javaVFrame::locked_monitors() {
116 assert(SafepointSynchronize::is_at_safepoint() || JavaThread::current() == thread(),
117 "must be at safepoint or it's a java frame of the current thread");
118
119 GrowableArray<MonitorInfo*>* mons = monitors();
120 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(mons->length());
121 if (mons->is_empty()) return result;
122
123 bool found_first_monitor = false;
124 ObjectMonitor *pending_monitor = thread()->current_pending_monitor();
125 ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor();
126 oop pending_obj = (pending_monitor != NULL ? (oop) pending_monitor->object() : (oop) NULL);
127 oop waiting_obj = (waiting_monitor != NULL ? (oop) waiting_monitor->object() : (oop) NULL);
128
129 for (int index = (mons->length()-1); index >= 0; index--) {
130 MonitorInfo* monitor = mons->at(index);
131 if (monitor->eliminated() && is_compiled_frame()) continue; // skip eliminated monitor
132 oop obj = monitor->owner();
133 if (obj == NULL) continue; // skip unowned monitor
134 //
135 // Skip the monitor that the thread is blocked to enter or waiting on
136 //
137 if (!found_first_monitor && (oopDesc::equals(obj, pending_obj) || oopDesc::equals(obj, waiting_obj))) {
138 continue;
139 }
140 found_first_monitor = true;
141 result->append(monitor);
142 }
143 return result;
144 }
145
146 void javaVFrame::print_locked_object_class_name(outputStream* st, Handle obj, const char* lock_state) {
147 if (obj.not_null()) {
148 st->print("\t- %s <" INTPTR_FORMAT "> ", lock_state, p2i(obj()));
149 if (obj->klass() == SystemDictionary::Class_klass()) {
150 st->print_cr("(a java.lang.Class for %s)", java_lang_Class::as_external_name(obj()));
151 } else {
152 Klass* k = obj->klass();
153 st->print_cr("(a %s)", k->external_name());
154 }
155 }
156 }
157
158 void javaVFrame::print_lock_info_on(outputStream* st, int frame_count) {
159 Thread* THREAD = Thread::current();
160 ResourceMark rm(THREAD);
161
162 // If this is the first frame and it is java.lang.Object.wait(...)
163 // then print out the receiver. Locals are not always available,
164 // e.g., compiled native frames have no scope so there are no locals.
165 if (frame_count == 0) {
166 if (method()->name() == vmSymbols::wait_name() &&
167 method()->method_holder()->name() == vmSymbols::java_lang_Object()) {
168 const char *wait_state = "waiting on"; // assume we are waiting
169 // If earlier in the output we reported java.lang.Thread.State ==
170 // "WAITING (on object monitor)" and now we report "waiting on", then
171 // we are still waiting for notification or timeout. Otherwise if
172 // we earlier reported java.lang.Thread.State == "BLOCKED (on object
173 // monitor)", then we are actually waiting to re-lock the monitor.
174 StackValueCollection* locs = locals();
175 if (!locs->is_empty()) {
176 StackValue* sv = locs->at(0);
177 if (sv->type() == T_OBJECT) {
178 Handle o = locs->at(0)->get_obj();
179 if (java_lang_Thread::get_thread_status(thread()->threadObj()) ==
180 java_lang_Thread::BLOCKED_ON_MONITOR_ENTER) {
181 wait_state = "waiting to re-lock in wait()";
182 }
183 print_locked_object_class_name(st, o, wait_state);
184 }
185 } else {
186 st->print_cr("\t- %s <no object reference available>", wait_state);
187 }
188 } else if (thread()->current_park_blocker() != NULL) {
189 oop obj = thread()->current_park_blocker();
190 Klass* k = obj->klass();
191 st->print_cr("\t- %s <" INTPTR_FORMAT "> (a %s)", "parking to wait for ", p2i(obj), k->external_name());
192 }
193 }
194
195 // Print out all monitors that we have locked, or are trying to lock,
196 // including re-locking after being notified or timing out in a wait().
197 GrowableArray<MonitorInfo*>* mons = monitors();
198 if (!mons->is_empty()) {
199 bool found_first_monitor = false;
200 for (int index = (mons->length()-1); index >= 0; index--) {
201 MonitorInfo* monitor = mons->at(index);
202 if (monitor->eliminated() && is_compiled_frame()) { // Eliminated in compiled code
203 if (monitor->owner_is_scalar_replaced()) {
204 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass());
205 // format below for lockbits matches this one.
206 st->print("\t- eliminated <owner is scalar replaced> (a %s)", k->external_name());
207 } else {
208 Handle obj(THREAD, monitor->owner());
209 if (obj() != NULL) {
210 print_locked_object_class_name(st, obj, "eliminated");
211 }
212 }
213 continue;
214 }
215 if (monitor->owner() != NULL) {
216 // the monitor is associated with an object, i.e., it is locked
217
218 markOop mark = NULL;
219 const char *lock_state = "locked"; // assume we have the monitor locked
220 if (!found_first_monitor && frame_count == 0) {
221 // If this is the first frame and we haven't found an owned
222 // monitor before, then we need to see if we have completed
223 // the lock or if we are blocked trying to acquire it. Only
224 // an inflated monitor that is first on the monitor list in
225 // the first frame can block us on a monitor enter.
226 mark = monitor->owner()->mark();
227 if (mark->has_monitor() &&
228 ( // we have marked ourself as pending on this monitor
229 mark->monitor() == thread()->current_pending_monitor() ||
230 // we are not the owner of this monitor
231 !mark->monitor()->is_entered(thread())
232 )) {
233 lock_state = "waiting to lock";
234 } else {
235 // We own the monitor which is not as interesting so
236 // disable the extra printing below.
237 mark = NULL;
238 }
239 }
240 print_locked_object_class_name(st, Handle(THREAD, monitor->owner()), lock_state);
241
242 found_first_monitor = true;
243 }
244 }
245 }
246 }
247
248 // ------------- interpretedVFrame --------------
249
250 u_char* interpretedVFrame::bcp() const {
251 return fr().interpreter_frame_bcp();
252 }
253
254 void interpretedVFrame::set_bcp(u_char* bcp) {
255 fr().interpreter_frame_set_bcp(bcp);
256 }
257
258 intptr_t* interpretedVFrame::locals_addr_at(int offset) const {
259 assert(fr().is_interpreted_frame(), "frame should be an interpreted frame");
260 return fr().interpreter_frame_local_at(offset);
261 }
262
263
264 GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const {
265 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5);
266 for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin()));
267 current >= fr().interpreter_frame_monitor_end();
268 current = fr().previous_monitor_in_interpreter_frame(current)) {
269 result->push(new MonitorInfo(current->obj(), current->lock(), false, false));
270 }
271 return result;
272 }
273
274 int interpretedVFrame::bci() const {
275 return method()->bci_from(bcp());
276 }
277
278 Method* interpretedVFrame::method() const {
279 return fr().interpreter_frame_method();
280 }
281
282 static StackValue* create_stack_value_from_oop_map(const InterpreterOopMap& oop_mask,
283 int index,
284 const intptr_t* const addr) {
285
286 assert(index >= 0 &&
287 index < oop_mask.number_of_entries(), "invariant");
288
289 // categorize using oop_mask
290 if (oop_mask.is_oop(index)) {
291 // reference (oop) "r"
292 Handle h(Thread::current(), addr != NULL ? (*(oop*)addr) : (oop)NULL);
293 return new StackValue(h);
294 }
295 // value (integer) "v"
296 return new StackValue(addr != NULL ? *addr : 0);
297 }
298
299 static bool is_in_expression_stack(const frame& fr, const intptr_t* const addr) {
300 assert(addr != NULL, "invariant");
301
302 // Ensure to be 'inside' the expresion stack (i.e., addr >= sp for Intel).
303 // In case of exceptions, the expression stack is invalid and the sp
304 // will be reset to express this condition.
305 if (frame::interpreter_frame_expression_stack_direction() > 0) {
306 return addr <= fr.interpreter_frame_tos_address();
307 }
308
309 return addr >= fr.interpreter_frame_tos_address();
310 }
311
312 static void stack_locals(StackValueCollection* result,
313 int length,
314 const InterpreterOopMap& oop_mask,
315 const frame& fr) {
316
317 assert(result != NULL, "invariant");
318
319 for (int i = 0; i < length; ++i) {
320 const intptr_t* const addr = fr.interpreter_frame_local_at(i);
321 assert(addr != NULL, "invariant");
322 assert(addr >= fr.sp(), "must be inside the frame");
323
324 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, i, addr);
325 assert(sv != NULL, "sanity check");
326
327 result->add(sv);
328 }
329 }
330
331 static void stack_expressions(StackValueCollection* result,
332 int length,
333 int max_locals,
334 const InterpreterOopMap& oop_mask,
335 const frame& fr) {
336
337 assert(result != NULL, "invariant");
338
339 for (int i = 0; i < length; ++i) {
340 const intptr_t* addr = fr.interpreter_frame_expression_stack_at(i);
341 assert(addr != NULL, "invariant");
342 if (!is_in_expression_stack(fr, addr)) {
343 // Need to ensure no bogus escapes.
344 addr = NULL;
345 }
346
347 StackValue* const sv = create_stack_value_from_oop_map(oop_mask,
348 i + max_locals,
349 addr);
350 assert(sv != NULL, "sanity check");
351
352 result->add(sv);
353 }
354 }
355
356 StackValueCollection* interpretedVFrame::locals() const {
357 return stack_data(false);
358 }
359
360 StackValueCollection* interpretedVFrame::expressions() const {
361 return stack_data(true);
362 }
363
364 /*
365 * Worker routine for fetching references and/or values
366 * for a particular bci in the interpretedVFrame.
367 *
368 * Returns data for either "locals" or "expressions",
369 * using bci relative oop_map (oop_mask) information.
370 *
371 * @param expressions bool switch controlling what data to return
372 (false == locals / true == expression)
373 *
374 */
375 StackValueCollection* interpretedVFrame::stack_data(bool expressions) const {
376
377 InterpreterOopMap oop_mask;
378 method()->mask_for(bci(), &oop_mask);
379 const int mask_len = oop_mask.number_of_entries();
380
381 // If the method is native, method()->max_locals() is not telling the truth.
382 // For our purposes, max locals instead equals the size of parameters.
383 const int max_locals = method()->is_native() ?
384 method()->size_of_parameters() : method()->max_locals();
385
386 assert(mask_len >= max_locals, "invariant");
387
388 const int length = expressions ? mask_len - max_locals : max_locals;
389 assert(length >= 0, "invariant");
390
391 StackValueCollection* const result = new StackValueCollection(length);
392
393 if (0 == length) {
394 return result;
395 }
396
397 if (expressions) {
398 stack_expressions(result, length, max_locals, oop_mask, fr());
399 } else {
400 stack_locals(result, length, oop_mask, fr());
401 }
402
403 assert(length == result->size(), "invariant");
404
405 return result;
406 }
407
408 void interpretedVFrame::set_locals(StackValueCollection* values) const {
409 if (values == NULL || values->size() == 0) return;
410
411 // If the method is native, max_locals is not telling the truth.
412 // maxlocals then equals the size of parameters
413 const int max_locals = method()->is_native() ?
414 method()->size_of_parameters() : method()->max_locals();
415
416 assert(max_locals == values->size(), "Mismatch between actual stack format and supplied data");
417
418 // handle locals
419 for (int i = 0; i < max_locals; i++) {
420 // Find stack location
421 intptr_t *addr = locals_addr_at(i);
422
423 // Depending on oop/int put it in the right package
424 const StackValue* const sv = values->at(i);
425 assert(sv != NULL, "sanity check");
426 if (sv->type() == T_OBJECT) {
427 *(oop *) addr = (sv->get_obj())();
428 } else { // integer
429 *addr = sv->get_int();
430 }
431 }
432 }
433
434 // ------------- cChunk --------------
435
436 entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread)
437 : externalVFrame(fr, reg_map, thread) {}
438
439 #ifdef ASSERT
440 void vframeStreamCommon::found_bad_method_frame() const {
441 // 6379830 Cut point for an assertion that occasionally fires when
442 // we are using the performance analyzer.
443 // Disable this assert when testing the analyzer with fastdebug.
444 // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number)
445 fatal("invalid bci or invalid scope desc");
446 }
447 #endif
448
449 // top-frame will be skipped
450 vframeStream::vframeStream(JavaThread* thread, frame top_frame,
451 bool stop_at_java_call_stub) : vframeStreamCommon(thread) {
452 _stop_at_java_call_stub = stop_at_java_call_stub;
453
454 // skip top frame, as it may not be at safepoint
455 _frame = top_frame.sender(&_reg_map);
456 while (!fill_from_frame()) {
457 _frame = _frame.sender(&_reg_map);
458 }
459 }
460
461
462 // Step back n frames, skip any pseudo frames in between.
463 // This function is used in Class.forName, Class.newInstance, Method.Invoke,
464 // AccessController.doPrivileged.
465 void vframeStreamCommon::security_get_caller_frame(int depth) {
466 assert(depth >= 0, "invalid depth: %d", depth);
467 for (int n = 0; !at_end(); security_next()) {
468 if (!method()->is_ignored_by_security_stack_walk()) {
469 if (n == depth) {
470 // We have reached the desired depth; return.
471 return;
472 }
473 n++; // this is a non-skipped frame; count it against the depth
474 }
475 }
476 // NOTE: At this point there were not enough frames on the stack
477 // to walk to depth. Callers of this method have to check for at_end.
478 }
479
480
481 void vframeStreamCommon::security_next() {
482 if (method()->is_prefixed_native()) {
483 skip_prefixed_method_and_wrappers(); // calls next()
484 } else {
485 next();
486 }
487 }
488
489
490 void vframeStreamCommon::skip_prefixed_method_and_wrappers() {
491 ResourceMark rm;
492 HandleMark hm;
493
494 int method_prefix_count = 0;
495 char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count);
496 Klass* prefixed_klass = method()->method_holder();
497 const char* prefixed_name = method()->name()->as_C_string();
498 size_t prefixed_name_len = strlen(prefixed_name);
499 int prefix_index = method_prefix_count-1;
500
501 while (!at_end()) {
502 next();
503 if (method()->method_holder() != prefixed_klass) {
504 break; // classes don't match, can't be a wrapper
505 }
506 const char* name = method()->name()->as_C_string();
507 size_t name_len = strlen(name);
508 size_t prefix_len = prefixed_name_len - name_len;
509 if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) {
510 break; // prefixed name isn't prefixed version of method name, can't be a wrapper
511 }
512 for (; prefix_index >= 0; --prefix_index) {
513 const char* possible_prefix = method_prefixes[prefix_index];
514 size_t possible_prefix_len = strlen(possible_prefix);
515 if (possible_prefix_len == prefix_len &&
516 strncmp(possible_prefix, prefixed_name, prefix_len) == 0) {
517 break; // matching prefix found
518 }
519 }
520 if (prefix_index < 0) {
521 break; // didn't find the prefix, can't be a wrapper
522 }
523 prefixed_name = name;
524 prefixed_name_len = name_len;
525 }
526 }
527
528
529 void vframeStreamCommon::skip_reflection_related_frames() {
530 while (!at_end() &&
531 (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) ||
532 method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass()))) {
533 next();
534 }
535 }
536
537
538 #ifndef PRODUCT
539 void vframe::print() {
540 if (WizardMode) _fr.print_value_on(tty,NULL);
541 }
542
543
544 void vframe::print_value() const {
545 ((vframe*)this)->print();
546 }
547
548
549 void entryVFrame::print_value() const {
550 ((entryVFrame*)this)->print();
551 }
552
553 void entryVFrame::print() {
554 vframe::print();
555 tty->print_cr("C Chunk inbetween Java");
556 tty->print_cr("C link " INTPTR_FORMAT, p2i(_fr.link()));
557 }
558
559
560 // ------------- javaVFrame --------------
561
562 static void print_stack_values(const char* title, StackValueCollection* values) {
563 if (values->is_empty()) return;
564 tty->print_cr("\t%s:", title);
565 values->print();
566 }
567
568
569 void javaVFrame::print() {
570 ResourceMark rm;
571 vframe::print();
572 tty->print("\t");
573 method()->print_value();
574 tty->cr();
575 tty->print_cr("\tbci: %d", bci());
576
577 print_stack_values("locals", locals());
578 print_stack_values("expressions", expressions());
579
580 GrowableArray<MonitorInfo*>* list = monitors();
581 if (list->is_empty()) return;
582 tty->print_cr("\tmonitor list:");
583 for (int index = (list->length()-1); index >= 0; index--) {
584 MonitorInfo* monitor = list->at(index);
585 tty->print("\t obj\t");
586 if (monitor->owner_is_scalar_replaced()) {
587 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass());
588 tty->print("( is scalar replaced %s)", k->external_name());
589 } else if (monitor->owner() == NULL) {
590 tty->print("( null )");
591 } else {
592 monitor->owner()->print_value();
593 tty->print("(owner=" INTPTR_FORMAT ")", p2i(monitor->owner()));
594 }
595 if (monitor->eliminated()) {
596 if(is_compiled_frame()) {
597 tty->print(" ( lock is eliminated in compiled frame )");
598 } else {
599 tty->print(" ( lock is eliminated, frame not compiled )");
600 }
601 }
602 tty->cr();
603 tty->print("\t ");
604 monitor->lock()->print_on(tty);
605 tty->cr();
606 }
607 }
608
609
610 void javaVFrame::print_value() const {
611 Method* m = method();
612 InstanceKlass* k = m->method_holder();
613 tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")",
614 p2i(_fr.sp()), p2i(_fr.unextended_sp()), p2i(_fr.fp()), p2i(_fr.pc()));
615 tty->print("%s.%s", k->internal_name(), m->name()->as_C_string());
616
617 if (!m->is_native()) {
618 Symbol* source_name = k->source_file_name();
619 int line_number = m->line_number_from_bci(bci());
620 if (source_name != NULL && (line_number != -1)) {
621 tty->print("(%s:%d)", source_name->as_C_string(), line_number);
622 }
623 } else {
624 tty->print("(Native Method)");
625 }
626 // Check frame size and print warning if it looks suspiciously large
627 if (fr().sp() != NULL) {
628 RegisterMap map = *register_map();
629 uint size = fr().frame_size(&map);
630 #ifdef _LP64
631 if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size);
632 #else
633 if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size);
634 #endif
635 }
636 }
637
638
639 bool javaVFrame::structural_compare(javaVFrame* other) {
640 // Check static part
641 if (method() != other->method()) return false;
642 if (bci() != other->bci()) return false;
643
644 // Check locals
645 StackValueCollection *locs = locals();
646 StackValueCollection *other_locs = other->locals();
647 assert(locs->size() == other_locs->size(), "sanity check");
648 int i;
649 for(i = 0; i < locs->size(); i++) {
650 // it might happen the compiler reports a conflict and
651 // the interpreter reports a bogus int.
652 if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue;
653 if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue;
654
655 if (!locs->at(i)->equal(other_locs->at(i)))
656 return false;
657 }
658
659 // Check expressions
660 StackValueCollection* exprs = expressions();
661 StackValueCollection* other_exprs = other->expressions();
662 assert(exprs->size() == other_exprs->size(), "sanity check");
663 for(i = 0; i < exprs->size(); i++) {
664 if (!exprs->at(i)->equal(other_exprs->at(i)))
665 return false;
666 }
667
668 return true;
669 }
670
671
672 void javaVFrame::print_activation(int index) const {
673 // frame number and method
674 tty->print("%2d - ", index);
675 ((vframe*)this)->print_value();
676 tty->cr();
677
678 if (WizardMode) {
679 ((vframe*)this)->print();
680 tty->cr();
681 }
682 }
683
684
685 void javaVFrame::verify() const {
686 }
687
688
689 void interpretedVFrame::verify() const {
690 }
691
692
693 // ------------- externalVFrame --------------
694
695 void externalVFrame::print() {
696 _fr.print_value_on(tty,NULL);
697 }
698
699
700 void externalVFrame::print_value() const {
701 ((vframe*)this)->print();
702 }
703 #endif // PRODUCT