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
51 vframe::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
57 vframe::vframe(const frame* fr, JavaThread* thread)
58 : _reg_map(thread), _thread(thread) {
59 assert(fr != NULL, "must have frame");
60 _fr = *fr;
61 }
62
63 vframe* 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
89 vframe* 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
98 vframe* vframe::top() const {
99 vframe* vf = (vframe*) this;
100 while (!vf->is_top()) vf = vf->sender();
101 return vf;
102 }
103
104
105 javaVFrame* 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
116 GrowableArray<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 && (obj == pending_obj || obj == waiting_obj)) {
139 continue;
140 }
141 found_first_monitor = true;
142 result->append(monitor);
143 }
144 return result;
145 }
146
147 void 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
159 void 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 st->print("\t- eliminated <owner is scalar replaced> (a %s)", k->external_name());
215 } else {
216 Handle obj(THREAD, monitor->owner());
217 if (obj() != NULL) {
218 print_locked_object_class_name(st, obj, "eliminated");
219 }
220 }
221 continue;
222 }
223 if (monitor->owner() != NULL) {
224 // the monitor is associated with an object, i.e., it is locked
225
226 const char *lock_state = "locked"; // assume we have the monitor locked
227 if (!found_first_monitor && frame_count == 0) {
228 // If this is the first frame and we haven't found an owned
229 // monitor before, then we need to see if we have completed
230 // the lock or if we are blocked trying to acquire it. Only
231 // an inflated monitor that is first on the monitor list in
232 // the first frame can block us on a monitor enter.
233 markWord mark = monitor->owner()->mark();
234 if (mark.has_monitor() &&
235 ( // we have marked ourself as pending on this monitor
236 mark.monitor() == thread()->current_pending_monitor() ||
237 // we are not the owner of this monitor
238 !mark.monitor()->is_entered(thread())
239 )) {
240 lock_state = "waiting to lock";
241 }
242 }
243 print_locked_object_class_name(st, Handle(THREAD, monitor->owner()), lock_state);
244
245 found_first_monitor = true;
246 }
247 }
248 }
249 }
250
251 // ------------- interpretedVFrame --------------
252
253 u_char* interpretedVFrame::bcp() const {
254 return fr().interpreter_frame_bcp();
255 }
256
257 void interpretedVFrame::set_bcp(u_char* bcp) {
258 fr().interpreter_frame_set_bcp(bcp);
259 }
260
261 intptr_t* interpretedVFrame::locals_addr_at(int offset) const {
262 assert(fr().is_interpreted_frame(), "frame should be an interpreted frame");
263 return fr().interpreter_frame_local_at(offset);
264 }
265
266
267 GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const {
268 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5);
269 for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin()));
270 current >= fr().interpreter_frame_monitor_end();
271 current = fr().previous_monitor_in_interpreter_frame(current)) {
272 result->push(new MonitorInfo(current->obj(), current->lock(), false, false));
273 }
274 return result;
275 }
276
277 int interpretedVFrame::bci() const {
278 return method()->bci_from(bcp());
279 }
280
281 Method* interpretedVFrame::method() const {
282 return fr().interpreter_frame_method();
283 }
284
285 static StackValue* create_stack_value_from_oop_map(const InterpreterOopMap& oop_mask,
286 int index,
287 const intptr_t* const addr) {
288
289 assert(index >= 0 &&
290 index < oop_mask.number_of_entries(), "invariant");
291
292 // categorize using oop_mask
293 if (oop_mask.is_oop(index)) {
294 // reference (oop) "r"
295 Handle h(Thread::current(), addr != NULL ? (*(oop*)addr) : (oop)NULL);
296 return new StackValue(h);
297 }
298 // value (integer) "v"
299 return new StackValue(addr != NULL ? *addr : 0);
300 }
301
302 static bool is_in_expression_stack(const frame& fr, const intptr_t* const addr) {
303 assert(addr != NULL, "invariant");
304
305 // Ensure to be 'inside' the expresion stack (i.e., addr >= sp for Intel).
306 // In case of exceptions, the expression stack is invalid and the sp
307 // will be reset to express this condition.
308 if (frame::interpreter_frame_expression_stack_direction() > 0) {
309 return addr <= fr.interpreter_frame_tos_address();
310 }
311
312 return addr >= fr.interpreter_frame_tos_address();
313 }
314
315 static void stack_locals(StackValueCollection* result,
316 int length,
317 const InterpreterOopMap& oop_mask,
318 const frame& fr) {
319
320 assert(result != NULL, "invariant");
321
322 for (int i = 0; i < length; ++i) {
323 const intptr_t* const addr = fr.interpreter_frame_local_at(i);
324 assert(addr != NULL, "invariant");
325 assert(addr >= fr.sp(), "must be inside the frame");
326
327 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, i, addr);
328 assert(sv != NULL, "sanity check");
329
330 result->add(sv);
331 }
332 }
333
334 static void stack_expressions(StackValueCollection* result,
335 int length,
336 int max_locals,
337 const InterpreterOopMap& oop_mask,
338 const frame& fr) {
339
340 assert(result != NULL, "invariant");
341
342 for (int i = 0; i < length; ++i) {
343 const intptr_t* addr = fr.interpreter_frame_expression_stack_at(i);
344 assert(addr != NULL, "invariant");
345 if (!is_in_expression_stack(fr, addr)) {
346 // Need to ensure no bogus escapes.
347 addr = NULL;
348 }
349
350 StackValue* const sv = create_stack_value_from_oop_map(oop_mask,
351 i + max_locals,
352 addr);
353 assert(sv != NULL, "sanity check");
354
355 result->add(sv);
356 }
357 }
358
359 StackValueCollection* interpretedVFrame::locals() const {
360 return stack_data(false);
361 }
362
363 StackValueCollection* interpretedVFrame::expressions() const {
364 return stack_data(true);
365 }
366
367 /*
368 * Worker routine for fetching references and/or values
369 * for a particular bci in the interpretedVFrame.
370 *
371 * Returns data for either "locals" or "expressions",
372 * using bci relative oop_map (oop_mask) information.
373 *
374 * @param expressions bool switch controlling what data to return
375 (false == locals / true == expression)
376 *
377 */
378 StackValueCollection* interpretedVFrame::stack_data(bool expressions) const {
379
380 InterpreterOopMap oop_mask;
381 method()->mask_for(bci(), &oop_mask);
382 const int mask_len = oop_mask.number_of_entries();
383
384 // If the method is native, method()->max_locals() is not telling the truth.
385 // For our purposes, max locals instead equals the size of parameters.
386 const int max_locals = method()->is_native() ?
387 method()->size_of_parameters() : method()->max_locals();
388
389 assert(mask_len >= max_locals, "invariant");
390
391 const int length = expressions ? mask_len - max_locals : max_locals;
392 assert(length >= 0, "invariant");
393
394 StackValueCollection* const result = new StackValueCollection(length);
395
396 if (0 == length) {
397 return result;
398 }
399
400 if (expressions) {
401 stack_expressions(result, length, max_locals, oop_mask, fr());
402 } else {
403 stack_locals(result, length, oop_mask, fr());
404 }
405
406 assert(length == result->size(), "invariant");
407
408 return result;
409 }
410
411 void interpretedVFrame::set_locals(StackValueCollection* values) const {
412 if (values == NULL || values->size() == 0) return;
413
414 // If the method is native, max_locals is not telling the truth.
415 // maxlocals then equals the size of parameters
416 const int max_locals = method()->is_native() ?
417 method()->size_of_parameters() : method()->max_locals();
418
419 assert(max_locals == values->size(), "Mismatch between actual stack format and supplied data");
420
421 // handle locals
422 for (int i = 0; i < max_locals; i++) {
423 // Find stack location
424 intptr_t *addr = locals_addr_at(i);
425
426 // Depending on oop/int put it in the right package
427 const StackValue* const sv = values->at(i);
428 assert(sv != NULL, "sanity check");
429 if (sv->type() == T_OBJECT) {
430 *(oop *) addr = (sv->get_obj())();
431 } else { // integer
432 *addr = sv->get_int();
433 }
434 }
435 }
436
437 // ------------- cChunk --------------
438
439 entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread)
440 : externalVFrame(fr, reg_map, thread) {}
441
442 #ifdef ASSERT
443 void vframeStreamCommon::found_bad_method_frame() const {
444 // 6379830 Cut point for an assertion that occasionally fires when
445 // we are using the performance analyzer.
446 // Disable this assert when testing the analyzer with fastdebug.
447 // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number)
448 fatal("invalid bci or invalid scope desc");
449 }
450 #endif
451
452 // top-frame will be skipped
453 vframeStream::vframeStream(JavaThread* thread, frame top_frame,
454 bool stop_at_java_call_stub) : vframeStreamCommon(thread) {
455 _stop_at_java_call_stub = stop_at_java_call_stub;
456
457 // skip top frame, as it may not be at safepoint
458 _prev_frame = top_frame;
459 _frame = top_frame.sender(&_reg_map);
460 while (!fill_from_frame()) {
461 _prev_frame = _frame;
462 _frame = _frame.sender(&_reg_map);
463 }
464 }
465
466
467 // Step back n frames, skip any pseudo frames in between.
468 // This function is used in Class.forName, Class.newInstance, Method.Invoke,
469 // AccessController.doPrivileged.
470 void vframeStreamCommon::security_get_caller_frame(int depth) {
471 assert(depth >= 0, "invalid depth: %d", depth);
472 for (int n = 0; !at_end(); security_next()) {
473 if (!method()->is_ignored_by_security_stack_walk()) {
474 if (n == depth) {
475 // We have reached the desired depth; return.
476 return;
477 }
478 n++; // this is a non-skipped frame; count it against the depth
479 }
480 }
481 // NOTE: At this point there were not enough frames on the stack
482 // to walk to depth. Callers of this method have to check for at_end.
483 }
484
485
486 void vframeStreamCommon::security_next() {
487 if (method()->is_prefixed_native()) {
488 skip_prefixed_method_and_wrappers(); // calls next()
489 } else {
490 next();
491 }
492 }
493
494
495 void vframeStreamCommon::skip_prefixed_method_and_wrappers() {
496 ResourceMark rm;
497 HandleMark hm;
498
499 int method_prefix_count = 0;
500 char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count);
501 Klass* prefixed_klass = method()->method_holder();
502 const char* prefixed_name = method()->name()->as_C_string();
503 size_t prefixed_name_len = strlen(prefixed_name);
504 int prefix_index = method_prefix_count-1;
505
506 while (!at_end()) {
507 next();
508 if (method()->method_holder() != prefixed_klass) {
509 break; // classes don't match, can't be a wrapper
510 }
511 const char* name = method()->name()->as_C_string();
512 size_t name_len = strlen(name);
513 size_t prefix_len = prefixed_name_len - name_len;
514 if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) {
515 break; // prefixed name isn't prefixed version of method name, can't be a wrapper
516 }
517 for (; prefix_index >= 0; --prefix_index) {
518 const char* possible_prefix = method_prefixes[prefix_index];
519 size_t possible_prefix_len = strlen(possible_prefix);
520 if (possible_prefix_len == prefix_len &&
521 strncmp(possible_prefix, prefixed_name, prefix_len) == 0) {
522 break; // matching prefix found
523 }
524 }
525 if (prefix_index < 0) {
526 break; // didn't find the prefix, can't be a wrapper
527 }
528 prefixed_name = name;
529 prefixed_name_len = name_len;
530 }
531 }
532
533
534 void vframeStreamCommon::skip_reflection_related_frames() {
535 while (!at_end() &&
536 (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) ||
537 method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass()))) {
538 next();
539 }
540 }
541
542 javaVFrame* vframeStreamCommon::asJavaVFrame() {
543 javaVFrame* result = NULL;
544 if (_mode == compiled_mode) {
545 guarantee(_frame.is_compiled_frame(), "expected compiled Java frame");
546
547 // lazy update to register map
548 bool update_map = true;
549 RegisterMap map(_thread, update_map);
550 frame f = _prev_frame.sender(&map);
551
552 guarantee(f.is_compiled_frame(), "expected compiled Java frame");
553
554 compiledVFrame* cvf = compiledVFrame::cast(vframe::new_vframe(&f, &map, _thread));
555
556 guarantee(cvf->cb() == cb(), "wrong code blob");
557
558 // get the same scope as this stream
559 cvf = cvf->at_scope(_decode_offset, _vframe_id);
560
561 guarantee(cvf->scope()->decode_offset() == _decode_offset, "wrong scope");
562 guarantee(cvf->scope()->sender_decode_offset() == _sender_decode_offset, "wrong scope");
563 guarantee(cvf->vframe_id() == _vframe_id, "wrong vframe");
564
565 result = cvf;
566 } else {
567 result = javaVFrame::cast(vframe::new_vframe(&_frame, &_reg_map, _thread));
568 }
569 guarantee(result->method() == method(), "wrong method");
570 return result;
571 }
572
573
574 #ifndef PRODUCT
575 void vframe::print() {
576 if (WizardMode) _fr.print_value_on(tty,NULL);
577 }
578
579
580 void vframe::print_value() const {
581 ((vframe*)this)->print();
582 }
583
584
585 void entryVFrame::print_value() const {
586 ((entryVFrame*)this)->print();
587 }
588
589 void entryVFrame::print() {
590 vframe::print();
591 tty->print_cr("C Chunk inbetween Java");
592 tty->print_cr("C link " INTPTR_FORMAT, p2i(_fr.link()));
593 }
594
595
596 // ------------- javaVFrame --------------
597
598 static void print_stack_values(const char* title, StackValueCollection* values) {
599 if (values->is_empty()) return;
600 tty->print_cr("\t%s:", title);
601 values->print();
602 }
603
604
605 void javaVFrame::print() {
606 ResourceMark rm;
607 vframe::print();
608 tty->print("\t");
609 method()->print_value();
610 tty->cr();
611 tty->print_cr("\tbci: %d", bci());
612
613 print_stack_values("locals", locals());
614 print_stack_values("expressions", expressions());
615
616 GrowableArray<MonitorInfo*>* list = monitors();
617 if (list->is_empty()) return;
618 tty->print_cr("\tmonitor list:");
619 for (int index = (list->length()-1); index >= 0; index--) {
620 MonitorInfo* monitor = list->at(index);
621 tty->print("\t obj\t");
622 if (monitor->owner_is_scalar_replaced()) {
623 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass());
624 tty->print("( is scalar replaced %s)", k->external_name());
625 } else if (monitor->owner() == NULL) {
626 tty->print("( null )");
627 } else {
628 monitor->owner()->print_value();
629 tty->print("(owner=" INTPTR_FORMAT ")", p2i(monitor->owner()));
630 }
631 if (monitor->eliminated()) {
632 if(is_compiled_frame()) {
633 tty->print(" ( lock is eliminated in compiled frame )");
634 } else {
635 tty->print(" ( lock is eliminated, frame not compiled )");
636 }
637 }
638 tty->cr();
639 tty->print("\t ");
640 monitor->lock()->print_on(tty);
641 tty->cr();
642 }
643 }
644
645
646 void javaVFrame::print_value() const {
647 Method* m = method();
648 InstanceKlass* k = m->method_holder();
649 tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")",
650 p2i(_fr.sp()), p2i(_fr.unextended_sp()), p2i(_fr.fp()), p2i(_fr.pc()));
651 tty->print("%s.%s", k->internal_name(), m->name()->as_C_string());
652
653 if (!m->is_native()) {
654 Symbol* source_name = k->source_file_name();
655 int line_number = m->line_number_from_bci(bci());
656 if (source_name != NULL && (line_number != -1)) {
657 tty->print("(%s:%d)", source_name->as_C_string(), line_number);
658 }
659 } else {
660 tty->print("(Native Method)");
661 }
662 // Check frame size and print warning if it looks suspiciously large
663 if (fr().sp() != NULL) {
664 RegisterMap map = *register_map();
665 uint size = fr().frame_size(&map);
666 #ifdef _LP64
667 if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size);
668 #else
669 if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size);
670 #endif
671 }
672 }
673
674
675 bool javaVFrame::structural_compare(javaVFrame* other) {
676 // Check static part
677 if (method() != other->method()) return false;
678 if (bci() != other->bci()) return false;
679
680 // Check locals
681 StackValueCollection *locs = locals();
682 StackValueCollection *other_locs = other->locals();
683 assert(locs->size() == other_locs->size(), "sanity check");
684 int i;
685 for(i = 0; i < locs->size(); i++) {
686 // it might happen the compiler reports a conflict and
687 // the interpreter reports a bogus int.
688 if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue;
689 if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue;
690
691 if (!locs->at(i)->equal(other_locs->at(i)))
692 return false;
693 }
694
695 // Check expressions
696 StackValueCollection* exprs = expressions();
697 StackValueCollection* other_exprs = other->expressions();
698 assert(exprs->size() == other_exprs->size(), "sanity check");
699 for(i = 0; i < exprs->size(); i++) {
700 if (!exprs->at(i)->equal(other_exprs->at(i)))
701 return false;
702 }
703
704 return true;
705 }
706
707
708 void javaVFrame::print_activation(int index) const {
709 // frame number and method
710 tty->print("%2d - ", index);
711 ((vframe*)this)->print_value();
712 tty->cr();
713
714 if (WizardMode) {
715 ((vframe*)this)->print();
716 tty->cr();
717 }
718 }
719
720
721 void javaVFrame::verify() const {
722 }
723
724
725 void interpretedVFrame::verify() const {
726 }
727
728
729 // ------------- externalVFrame --------------
730
731 void externalVFrame::print() {
732 _fr.print_value_on(tty,NULL);
733 }
734
735
736 void externalVFrame::print_value() const {
737 ((vframe*)this)->print();
738 }
739 #endif // PRODUCT