1/*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#include "precompiled.hpp"
26#include "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/thread.inline.hpp"
47#include "runtime/vframe.inline.hpp"
48#include "runtime/vframeArray.hpp"
49#include "runtime/vframe_hp.hpp"
50
51vframe::vframe(const frame* fr, const RegisterMap* reg_map, JavaThread* thread)
52: _reg_map(reg_map), _thread(thread) {
53 assert(fr != NULL, "must have frame");
54 _fr = *fr;
55}
56
57vframe::vframe(const frame* fr, JavaThread* thread)
58: _reg_map(thread), _thread(thread) {
59 assert(fr != NULL, "must have frame");
60 _fr = *fr;
61}
62
63vframe* vframe::new_vframe(const frame* f, const RegisterMap* reg_map, JavaThread* thread) {
64 // Interpreter frame
65 if (f->is_interpreted_frame()) {
66 return new interpretedVFrame(f, reg_map, thread);
67 }
68
69 // Compiled frame
70 CodeBlob* cb = f->cb();
71 if (cb != NULL) {
72 if (cb->is_compiled()) {
73 CompiledMethod* nm = (CompiledMethod*)cb;
74 return new compiledVFrame(f, reg_map, thread, nm);
75 }
76
77 if (f->is_runtime_frame()) {
78 // Skip this frame and try again.
79 RegisterMap temp_map = *reg_map;
80 frame s = f->sender(&temp_map);
81 return new_vframe(&s, &temp_map, thread);
82 }
83 }
84
85 // External frame
86 return new externalVFrame(f, reg_map, thread);
87}
88
89vframe* vframe::sender() const {
90 RegisterMap temp_map = *register_map();
91 assert(is_top(), "just checking");
92 if (_fr.is_entry_frame() && _fr.is_first_frame()) return NULL;
93 frame s = _fr.real_sender(&temp_map);
94 if (s.is_first_frame()) return NULL;
95 return vframe::new_vframe(&s, &temp_map, thread());
96}
97
98vframe* vframe::top() const {
99 vframe* vf = (vframe*) this;
100 while (!vf->is_top()) vf = vf->sender();
101 return vf;
102}
103
104
105javaVFrame* vframe::java_sender() const {
106 vframe* f = sender();
107 while (f != NULL) {
108 if (f->is_java_frame()) return javaVFrame::cast(f);
109 f = f->sender();
110 }
111 return NULL;
112}
113
114// ------------- javaVFrame --------------
115
116GrowableArray<MonitorInfo*>* javaVFrame::locked_monitors() {
117 assert(SafepointSynchronize::is_at_safepoint() || JavaThread::current() == thread(),
118 "must be at safepoint or it's a java frame of the current thread");
119
120 GrowableArray<MonitorInfo*>* mons = monitors();
121 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(mons->length());
122 if (mons->is_empty()) return result;
123
124 bool found_first_monitor = false;
125 ObjectMonitor *pending_monitor = thread()->current_pending_monitor();
126 ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor();
127 oop pending_obj = (pending_monitor != NULL ? (oop) pending_monitor->object() : (oop) NULL);
128 oop waiting_obj = (waiting_monitor != NULL ? (oop) waiting_monitor->object() : (oop) NULL);
129
130 for (int index = (mons->length()-1); index >= 0; index--) {
131 MonitorInfo* monitor = mons->at(index);
132 if (monitor->eliminated() && is_compiled_frame()) continue; // skip eliminated monitor
133 oop obj = monitor->owner();
134 if (obj == NULL) continue; // skip unowned monitor
135 //
136 // Skip the monitor that the thread is blocked to enter or waiting on
137 //
138 if (!found_first_monitor && (oopDesc::equals(obj, pending_obj) || oopDesc::equals(obj, waiting_obj))) {
139 continue;
140 }
141 found_first_monitor = true;
142 result->append(monitor);
143 }
144 return result;
145}
146
147void javaVFrame::print_locked_object_class_name(outputStream* st, Handle obj, const char* lock_state) {
148 if (obj.not_null()) {
149 st->print("\t- %s <" INTPTR_FORMAT "> ", lock_state, p2i(obj()));
150 if (obj->klass() == SystemDictionary::Class_klass()) {
151 st->print_cr("(a java.lang.Class for %s)", java_lang_Class::as_external_name(obj()));
152 } else {
153 Klass* k = obj->klass();
154 st->print_cr("(a %s)", k->external_name());
155 }
156 }
157}
158
159void javaVFrame::print_lock_info_on(outputStream* st, int frame_count) {
160 Thread* THREAD = Thread::current();
161 ResourceMark rm(THREAD);
162
163 // If this is the first frame and it is java.lang.Object.wait(...)
164 // then print out the receiver. Locals are not always available,
165 // e.g., compiled native frames have no scope so there are no locals.
166 if (frame_count == 0) {
167 if (method()->name() == vmSymbols::wait_name() &&
168 method()->method_holder()->name() == vmSymbols::java_lang_Object()) {
169 const char *wait_state = "waiting on"; // assume we are waiting
170 // If earlier in the output we reported java.lang.Thread.State ==
171 // "WAITING (on object monitor)" and now we report "waiting on", then
172 // we are still waiting for notification or timeout. Otherwise if
173 // we earlier reported java.lang.Thread.State == "BLOCKED (on object
174 // monitor)", then we are actually waiting to re-lock the monitor.
175 StackValueCollection* locs = locals();
176 if (!locs->is_empty()) {
177 StackValue* sv = locs->at(0);
178 if (sv->type() == T_OBJECT) {
179 Handle o = locs->at(0)->get_obj();
180 if (java_lang_Thread::get_thread_status(thread()->threadObj()) ==
181 java_lang_Thread::BLOCKED_ON_MONITOR_ENTER) {
182 wait_state = "waiting to re-lock in wait()";
183 }
184 print_locked_object_class_name(st, o, wait_state);
185 }
186 } else {
187 st->print_cr("\t- %s <no object reference available>", wait_state);
188 }
189 } else if (thread()->current_park_blocker() != NULL) {
190 oop obj = thread()->current_park_blocker();
191 Klass* k = obj->klass();
192 st->print_cr("\t- %s <" INTPTR_FORMAT "> (a %s)", "parking to wait for ", p2i(obj), k->external_name());
193 }
194 else if (thread()->osthread()->get_state() == OBJECT_WAIT) {
195 // We are waiting on an Object monitor but Object.wait() isn't the
196 // top-frame, so we should be waiting on a Class initialization monitor.
197 InstanceKlass* k = thread()->class_to_be_initialized();
198 if (k != NULL) {
199 st->print_cr("\t- waiting on the Class initialization monitor for %s", k->external_name());
200 }
201 }
202 }
203
204 // Print out all monitors that we have locked, or are trying to lock,
205 // including re-locking after being notified or timing out in a wait().
206 GrowableArray<MonitorInfo*>* mons = monitors();
207 if (!mons->is_empty()) {
208 bool found_first_monitor = false;
209 for (int index = (mons->length()-1); index >= 0; index--) {
210 MonitorInfo* monitor = mons->at(index);
211 if (monitor->eliminated() && is_compiled_frame()) { // Eliminated in compiled code
212 if (monitor->owner_is_scalar_replaced()) {
213 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass());
214 // format below for lockbits matches this one.
215 st->print("\t- eliminated <owner is scalar replaced> (a %s)", k->external_name());
216 } else {
217 Handle obj(THREAD, monitor->owner());
218 if (obj() != NULL) {
219 print_locked_object_class_name(st, obj, "eliminated");
220 }
221 }
222 continue;
223 }
224 if (monitor->owner() != NULL) {
225 // the monitor is associated with an object, i.e., it is locked
226
227 markOop mark = NULL;
228 const char *lock_state = "locked"; // assume we have the monitor locked
229 if (!found_first_monitor && frame_count == 0) {
230 // If this is the first frame and we haven't found an owned
231 // monitor before, then we need to see if we have completed
232 // the lock or if we are blocked trying to acquire it. Only
233 // an inflated monitor that is first on the monitor list in
234 // the first frame can block us on a monitor enter.
235 mark = monitor->owner()->mark();
236 if (mark->has_monitor() &&
237 ( // we have marked ourself as pending on this monitor
238 mark->monitor() == thread()->current_pending_monitor() ||
239 // we are not the owner of this monitor
240 !mark->monitor()->is_entered(thread())
241 )) {
242 lock_state = "waiting to lock";
243 } else {
244 // We own the monitor which is not as interesting so
245 // disable the extra printing below.
246 mark = NULL;
247 }
248 }
249 print_locked_object_class_name(st, Handle(THREAD, monitor->owner()), lock_state);
250
251 found_first_monitor = true;
252 }
253 }
254 }
255}
256
257// ------------- interpretedVFrame --------------
258
259u_char* interpretedVFrame::bcp() const {
260 return fr().interpreter_frame_bcp();
261}
262
263void interpretedVFrame::set_bcp(u_char* bcp) {
264 fr().interpreter_frame_set_bcp(bcp);
265}
266
267intptr_t* interpretedVFrame::locals_addr_at(int offset) const {
268 assert(fr().is_interpreted_frame(), "frame should be an interpreted frame");
269 return fr().interpreter_frame_local_at(offset);
270}
271
272
273GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const {
274 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5);
275 for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin()));
276 current >= fr().interpreter_frame_monitor_end();
277 current = fr().previous_monitor_in_interpreter_frame(current)) {
278 result->push(new MonitorInfo(current->obj(), current->lock(), false, false));
279 }
280 return result;
281}
282
283int interpretedVFrame::bci() const {
284 return method()->bci_from(bcp());
285}
286
287Method* interpretedVFrame::method() const {
288 return fr().interpreter_frame_method();
289}
290
291static StackValue* create_stack_value_from_oop_map(const InterpreterOopMap& oop_mask,
292 int index,
293 const intptr_t* const addr) {
294
295 assert(index >= 0 &&
296 index < oop_mask.number_of_entries(), "invariant");
297
298 // categorize using oop_mask
299 if (oop_mask.is_oop(index)) {
300 // reference (oop) "r"
301 Handle h(Thread::current(), addr != NULL ? (*(oop*)addr) : (oop)NULL);
302 return new StackValue(h);
303 }
304 // value (integer) "v"
305 return new StackValue(addr != NULL ? *addr : 0);
306}
307
308static bool is_in_expression_stack(const frame& fr, const intptr_t* const addr) {
309 assert(addr != NULL, "invariant");
310
311 // Ensure to be 'inside' the expresion stack (i.e., addr >= sp for Intel).
312 // In case of exceptions, the expression stack is invalid and the sp
313 // will be reset to express this condition.
314 if (frame::interpreter_frame_expression_stack_direction() > 0) {
315 return addr <= fr.interpreter_frame_tos_address();
316 }
317
318 return addr >= fr.interpreter_frame_tos_address();
319}
320
321static void stack_locals(StackValueCollection* result,
322 int length,
323 const InterpreterOopMap& oop_mask,
324 const frame& fr) {
325
326 assert(result != NULL, "invariant");
327
328 for (int i = 0; i < length; ++i) {
329 const intptr_t* const addr = fr.interpreter_frame_local_at(i);
330 assert(addr != NULL, "invariant");
331 assert(addr >= fr.sp(), "must be inside the frame");
332
333 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, i, addr);
334 assert(sv != NULL, "sanity check");
335
336 result->add(sv);
337 }
338}
339
340static void stack_expressions(StackValueCollection* result,
341 int length,
342 int max_locals,
343 const InterpreterOopMap& oop_mask,
344 const frame& fr) {
345
346 assert(result != NULL, "invariant");
347
348 for (int i = 0; i < length; ++i) {
349 const intptr_t* addr = fr.interpreter_frame_expression_stack_at(i);
350 assert(addr != NULL, "invariant");
351 if (!is_in_expression_stack(fr, addr)) {
352 // Need to ensure no bogus escapes.
353 addr = NULL;
354 }
355
356 StackValue* const sv = create_stack_value_from_oop_map(oop_mask,
357 i + max_locals,
358 addr);
359 assert(sv != NULL, "sanity check");
360
361 result->add(sv);
362 }
363}
364
365StackValueCollection* interpretedVFrame::locals() const {
366 return stack_data(false);
367}
368
369StackValueCollection* interpretedVFrame::expressions() const {
370 return stack_data(true);
371}
372
373/*
374 * Worker routine for fetching references and/or values
375 * for a particular bci in the interpretedVFrame.
376 *
377 * Returns data for either "locals" or "expressions",
378 * using bci relative oop_map (oop_mask) information.
379 *
380 * @param expressions bool switch controlling what data to return
381 (false == locals / true == expression)
382 *
383 */
384StackValueCollection* interpretedVFrame::stack_data(bool expressions) const {
385
386 InterpreterOopMap oop_mask;
387 method()->mask_for(bci(), &oop_mask);
388 const int mask_len = oop_mask.number_of_entries();
389
390 // If the method is native, method()->max_locals() is not telling the truth.
391 // For our purposes, max locals instead equals the size of parameters.
392 const int max_locals = method()->is_native() ?
393 method()->size_of_parameters() : method()->max_locals();
394
395 assert(mask_len >= max_locals, "invariant");
396
397 const int length = expressions ? mask_len - max_locals : max_locals;
398 assert(length >= 0, "invariant");
399
400 StackValueCollection* const result = new StackValueCollection(length);
401
402 if (0 == length) {
403 return result;
404 }
405
406 if (expressions) {
407 stack_expressions(result, length, max_locals, oop_mask, fr());
408 } else {
409 stack_locals(result, length, oop_mask, fr());
410 }
411
412 assert(length == result->size(), "invariant");
413
414 return result;
415}
416
417void interpretedVFrame::set_locals(StackValueCollection* values) const {
418 if (values == NULL || values->size() == 0) return;
419
420 // If the method is native, max_locals is not telling the truth.
421 // maxlocals then equals the size of parameters
422 const int max_locals = method()->is_native() ?
423 method()->size_of_parameters() : method()->max_locals();
424
425 assert(max_locals == values->size(), "Mismatch between actual stack format and supplied data");
426
427 // handle locals
428 for (int i = 0; i < max_locals; i++) {
429 // Find stack location
430 intptr_t *addr = locals_addr_at(i);
431
432 // Depending on oop/int put it in the right package
433 const StackValue* const sv = values->at(i);
434 assert(sv != NULL, "sanity check");
435 if (sv->type() == T_OBJECT) {
436 *(oop *) addr = (sv->get_obj())();
437 } else { // integer
438 *addr = sv->get_int();
439 }
440 }
441}
442
443// ------------- cChunk --------------
444
445entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread)
446: externalVFrame(fr, reg_map, thread) {}
447
448#ifdef ASSERT
449void vframeStreamCommon::found_bad_method_frame() const {
450 // 6379830 Cut point for an assertion that occasionally fires when
451 // we are using the performance analyzer.
452 // Disable this assert when testing the analyzer with fastdebug.
453 // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number)
454 fatal("invalid bci or invalid scope desc");
455}
456#endif
457
458// top-frame will be skipped
459vframeStream::vframeStream(JavaThread* thread, frame top_frame,
460 bool stop_at_java_call_stub) : vframeStreamCommon(thread) {
461 _stop_at_java_call_stub = stop_at_java_call_stub;
462
463 // skip top frame, as it may not be at safepoint
464 _prev_frame = top_frame;
465 _frame = top_frame.sender(&_reg_map);
466 while (!fill_from_frame()) {
467 _prev_frame = _frame;
468 _frame = _frame.sender(&_reg_map);
469 }
470}
471
472
473// Step back n frames, skip any pseudo frames in between.
474// This function is used in Class.forName, Class.newInstance, Method.Invoke,
475// AccessController.doPrivileged.
476void vframeStreamCommon::security_get_caller_frame(int depth) {
477 assert(depth >= 0, "invalid depth: %d", depth);
478 for (int n = 0; !at_end(); security_next()) {
479 if (!method()->is_ignored_by_security_stack_walk()) {
480 if (n == depth) {
481 // We have reached the desired depth; return.
482 return;
483 }
484 n++; // this is a non-skipped frame; count it against the depth
485 }
486 }
487 // NOTE: At this point there were not enough frames on the stack
488 // to walk to depth. Callers of this method have to check for at_end.
489}
490
491
492void vframeStreamCommon::security_next() {
493 if (method()->is_prefixed_native()) {
494 skip_prefixed_method_and_wrappers(); // calls next()
495 } else {
496 next();
497 }
498}
499
500
501void vframeStreamCommon::skip_prefixed_method_and_wrappers() {
502 ResourceMark rm;
503 HandleMark hm;
504
505 int method_prefix_count = 0;
506 char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count);
507 Klass* prefixed_klass = method()->method_holder();
508 const char* prefixed_name = method()->name()->as_C_string();
509 size_t prefixed_name_len = strlen(prefixed_name);
510 int prefix_index = method_prefix_count-1;
511
512 while (!at_end()) {
513 next();
514 if (method()->method_holder() != prefixed_klass) {
515 break; // classes don't match, can't be a wrapper
516 }
517 const char* name = method()->name()->as_C_string();
518 size_t name_len = strlen(name);
519 size_t prefix_len = prefixed_name_len - name_len;
520 if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) {
521 break; // prefixed name isn't prefixed version of method name, can't be a wrapper
522 }
523 for (; prefix_index >= 0; --prefix_index) {
524 const char* possible_prefix = method_prefixes[prefix_index];
525 size_t possible_prefix_len = strlen(possible_prefix);
526 if (possible_prefix_len == prefix_len &&
527 strncmp(possible_prefix, prefixed_name, prefix_len) == 0) {
528 break; // matching prefix found
529 }
530 }
531 if (prefix_index < 0) {
532 break; // didn't find the prefix, can't be a wrapper
533 }
534 prefixed_name = name;
535 prefixed_name_len = name_len;
536 }
537}
538
539
540void vframeStreamCommon::skip_reflection_related_frames() {
541 while (!at_end() &&
542 (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) ||
543 method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass()))) {
544 next();
545 }
546}
547
548javaVFrame* vframeStreamCommon::asJavaVFrame() {
549 javaVFrame* result = NULL;
550 if (_mode == compiled_mode) {
551 guarantee(_frame.is_compiled_frame(), "expected compiled Java frame");
552
553 // lazy update to register map
554 bool update_map = true;
555 RegisterMap map(_thread, update_map);
556 frame f = _prev_frame.sender(&map);
557
558 guarantee(f.is_compiled_frame(), "expected compiled Java frame");
559
560 compiledVFrame* cvf = compiledVFrame::cast(vframe::new_vframe(&f, &map, _thread));
561
562 guarantee(cvf->cb() == cb(), "wrong code blob");
563
564 // get the same scope as this stream
565 cvf = cvf->at_scope(_decode_offset, _vframe_id);
566
567 guarantee(cvf->scope()->decode_offset() == _decode_offset, "wrong scope");
568 guarantee(cvf->scope()->sender_decode_offset() == _sender_decode_offset, "wrong scope");
569 guarantee(cvf->vframe_id() == _vframe_id, "wrong vframe");
570
571 result = cvf;
572 } else {
573 result = javaVFrame::cast(vframe::new_vframe(&_frame, &_reg_map, _thread));
574 }
575 guarantee(result->method() == method(), "wrong method");
576 return result;
577}
578
579
580#ifndef PRODUCT
581void vframe::print() {
582 if (WizardMode) _fr.print_value_on(tty,NULL);
583}
584
585
586void vframe::print_value() const {
587 ((vframe*)this)->print();
588}
589
590
591void entryVFrame::print_value() const {
592 ((entryVFrame*)this)->print();
593}
594
595void entryVFrame::print() {
596 vframe::print();
597 tty->print_cr("C Chunk inbetween Java");
598 tty->print_cr("C link " INTPTR_FORMAT, p2i(_fr.link()));
599}
600
601
602// ------------- javaVFrame --------------
603
604static void print_stack_values(const char* title, StackValueCollection* values) {
605 if (values->is_empty()) return;
606 tty->print_cr("\t%s:", title);
607 values->print();
608}
609
610
611void javaVFrame::print() {
612 ResourceMark rm;
613 vframe::print();
614 tty->print("\t");
615 method()->print_value();
616 tty->cr();
617 tty->print_cr("\tbci: %d", bci());
618
619 print_stack_values("locals", locals());
620 print_stack_values("expressions", expressions());
621
622 GrowableArray<MonitorInfo*>* list = monitors();
623 if (list->is_empty()) return;
624 tty->print_cr("\tmonitor list:");
625 for (int index = (list->length()-1); index >= 0; index--) {
626 MonitorInfo* monitor = list->at(index);
627 tty->print("\t obj\t");
628 if (monitor->owner_is_scalar_replaced()) {
629 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass());
630 tty->print("( is scalar replaced %s)", k->external_name());
631 } else if (monitor->owner() == NULL) {
632 tty->print("( null )");
633 } else {
634 monitor->owner()->print_value();
635 tty->print("(owner=" INTPTR_FORMAT ")", p2i(monitor->owner()));
636 }
637 if (monitor->eliminated()) {
638 if(is_compiled_frame()) {
639 tty->print(" ( lock is eliminated in compiled frame )");
640 } else {
641 tty->print(" ( lock is eliminated, frame not compiled )");
642 }
643 }
644 tty->cr();
645 tty->print("\t ");
646 monitor->lock()->print_on(tty);
647 tty->cr();
648 }
649}
650
651
652void javaVFrame::print_value() const {
653 Method* m = method();
654 InstanceKlass* k = m->method_holder();
655 tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")",
656 p2i(_fr.sp()), p2i(_fr.unextended_sp()), p2i(_fr.fp()), p2i(_fr.pc()));
657 tty->print("%s.%s", k->internal_name(), m->name()->as_C_string());
658
659 if (!m->is_native()) {
660 Symbol* source_name = k->source_file_name();
661 int line_number = m->line_number_from_bci(bci());
662 if (source_name != NULL && (line_number != -1)) {
663 tty->print("(%s:%d)", source_name->as_C_string(), line_number);
664 }
665 } else {
666 tty->print("(Native Method)");
667 }
668 // Check frame size and print warning if it looks suspiciously large
669 if (fr().sp() != NULL) {
670 RegisterMap map = *register_map();
671 uint size = fr().frame_size(&map);
672#ifdef _LP64
673 if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size);
674#else
675 if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size);
676#endif
677 }
678}
679
680
681bool javaVFrame::structural_compare(javaVFrame* other) {
682 // Check static part
683 if (method() != other->method()) return false;
684 if (bci() != other->bci()) return false;
685
686 // Check locals
687 StackValueCollection *locs = locals();
688 StackValueCollection *other_locs = other->locals();
689 assert(locs->size() == other_locs->size(), "sanity check");
690 int i;
691 for(i = 0; i < locs->size(); i++) {
692 // it might happen the compiler reports a conflict and
693 // the interpreter reports a bogus int.
694 if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue;
695 if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue;
696
697 if (!locs->at(i)->equal(other_locs->at(i)))
698 return false;
699 }
700
701 // Check expressions
702 StackValueCollection* exprs = expressions();
703 StackValueCollection* other_exprs = other->expressions();
704 assert(exprs->size() == other_exprs->size(), "sanity check");
705 for(i = 0; i < exprs->size(); i++) {
706 if (!exprs->at(i)->equal(other_exprs->at(i)))
707 return false;
708 }
709
710 return true;
711}
712
713
714void javaVFrame::print_activation(int index) const {
715 // frame number and method
716 tty->print("%2d - ", index);
717 ((vframe*)this)->print_value();
718 tty->cr();
719
720 if (WizardMode) {
721 ((vframe*)this)->print();
722 tty->cr();
723 }
724}
725
726
727void javaVFrame::verify() const {
728}
729
730
731void interpretedVFrame::verify() const {
732}
733
734
735// ------------- externalVFrame --------------
736
737void externalVFrame::print() {
738 _fr.print_value_on(tty,NULL);
739}
740
741
742void externalVFrame::print_value() const {
743 ((vframe*)this)->print();
744}
745#endif // PRODUCT
746