1 /* 2 * Copyright (c) 1997, 2015, 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/handles.inline.hpp" 40 #include "runtime/objectMonitor.hpp" 41 #include "runtime/objectMonitor.inline.hpp" 42 #include "runtime/signature.hpp" 43 #include "runtime/stubRoutines.hpp" 44 #include "runtime/synchronizer.hpp" 45 #include "runtime/vframe.hpp" 46 #include "runtime/vframeArray.hpp" 47 #include "runtime/vframe_hp.hpp" 48 49 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 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_nmethod()) { 73 nmethod* nm = (nmethod*)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 static void 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, (address)obj()); 150 if (obj->klass() == SystemDictionary::Class_klass()) { 151 Klass* target_klass = java_lang_Class::as_Klass(obj()); 152 st->print_cr("(a java.lang.Class for %s)", InstanceKlass::cast(target_klass)->external_name()); 153 } else { 154 Klass* k = obj->klass(); 155 st->print_cr("(a %s)", k->external_name()); 156 } 157 } 158 } 159 160 void javaVFrame::print_lock_info_on(outputStream* st, int frame_count) { 161 ResourceMark rm; 162 163 // If this is the first frame, and java.lang.Object.wait(...) then print out the receiver. 164 if (frame_count == 0) { 165 if (method()->name() == vmSymbols::wait_name() && 166 method()->method_holder()->name() == vmSymbols::java_lang_Object()) { 167 StackValueCollection* locs = locals(); 168 if (!locs->is_empty()) { 169 StackValue* sv = locs->at(0); 170 if (sv->type() == T_OBJECT) { 171 Handle o = locs->at(0)->get_obj(); 172 print_locked_object_class_name(st, o, "waiting on"); 173 } 174 } 175 } else if (thread()->current_park_blocker() != NULL) { 176 oop obj = thread()->current_park_blocker(); 177 Klass* k = obj->klass(); 178 st->print_cr("\t- %s <" INTPTR_FORMAT "> (a %s)", "parking to wait for ", (address)obj, k->external_name()); 179 } 180 } 181 182 183 // Print out all monitors that we have locked or are trying to lock 184 GrowableArray<MonitorInfo*>* mons = monitors(); 185 if (!mons->is_empty()) { 186 bool found_first_monitor = false; 187 for (int index = (mons->length()-1); index >= 0; index--) { 188 MonitorInfo* monitor = mons->at(index); 189 if (monitor->eliminated() && is_compiled_frame()) { // Eliminated in compiled code 190 if (monitor->owner_is_scalar_replaced()) { 191 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass()); 192 // format below for lockbits matches this one. 193 st->print("\t- eliminated <owner is scalar replaced> (a %s)", k->external_name()); 194 } else { 195 oop obj = monitor->owner(); 196 if (obj != NULL) { 197 print_locked_object_class_name(st, obj, "eliminated"); 198 } 199 } 200 continue; 201 } 202 if (monitor->owner() != NULL) { 203 // the monitor is associated with an object, i.e., it is locked 204 205 // First, assume we have the monitor locked. If we haven't found an 206 // owned monitor before and this is the first frame, then we need to 207 // see if we have completed the lock or we are blocked trying to 208 // acquire it - we can only be blocked if the monitor is inflated 209 210 markOop mark = NULL; 211 const char *lock_state = "locked"; // assume we have the monitor locked 212 if (!found_first_monitor && frame_count == 0) { 213 mark = monitor->owner()->mark(); 214 if (mark->has_monitor() && 215 ( // we have marked ourself as pending on this monitor 216 mark->monitor() == thread()->current_pending_monitor() || 217 // we are not the owner of this monitor 218 !mark->monitor()->is_entered(thread()) 219 )) { 220 lock_state = "waiting to lock"; 221 } else { 222 mark = NULL; // Disable printing below 223 } 224 } 225 print_locked_object_class_name(st, monitor->owner(), lock_state); 226 if (Verbose && mark != NULL) { 227 // match with format above, replacing "-" with " ". 228 st->print("\t lockbits="); 229 mark->print_on(st); 230 st->cr(); 231 } 232 233 found_first_monitor = true; 234 } 235 } 236 } 237 } 238 239 // ------------- interpretedVFrame -------------- 240 241 u_char* interpretedVFrame::bcp() const { 242 return fr().interpreter_frame_bcp(); 243 } 244 245 void interpretedVFrame::set_bcp(u_char* bcp) { 246 fr().interpreter_frame_set_bcp(bcp); 247 } 248 249 intptr_t* interpretedVFrame::locals_addr_at(int offset) const { 250 assert(fr().is_interpreted_frame(), "frame should be an interpreted frame"); 251 return fr().interpreter_frame_local_at(offset); 252 } 253 254 255 GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const { 256 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5); 257 for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin())); 258 current >= fr().interpreter_frame_monitor_end(); 259 current = fr().previous_monitor_in_interpreter_frame(current)) { 260 result->push(new MonitorInfo(current->obj(), current->lock(), false, false)); 261 } 262 return result; 263 } 264 265 int interpretedVFrame::bci() const { 266 return method()->bci_from(bcp()); 267 } 268 269 Method* interpretedVFrame::method() const { 270 return fr().interpreter_frame_method(); 271 } 272 273 static StackValue* create_stack_value_from_oop_map(const InterpreterOopMap& oop_mask, 274 int index, 275 const intptr_t* const addr) { 276 277 assert(index >= 0 && 278 index < oop_mask.number_of_entries(), "invariant"); 279 280 // categorize using oop_mask 281 if (oop_mask.is_oop(index)) { 282 // reference (oop) "r" 283 Handle h(addr != NULL ? (*(oop*)addr) : (oop)NULL); 284 return new StackValue(h); 285 } 286 // value (integer) "v" 287 return new StackValue(addr != NULL ? *addr : 0); 288 } 289 290 static bool is_in_expression_stack(const frame& fr, const intptr_t* const addr) { 291 assert(addr != NULL, "invariant"); 292 293 // Ensure to be 'inside' the expresion stack (i.e., addr >= sp for Intel). 294 // In case of exceptions, the expression stack is invalid and the sp 295 // will be reset to express this condition. 296 if (frame::interpreter_frame_expression_stack_direction() > 0) { 297 return addr <= fr.interpreter_frame_tos_address(); 298 } 299 300 return addr >= fr.interpreter_frame_tos_address(); 301 } 302 303 static void stack_locals(StackValueCollection* result, 304 int length, 305 const InterpreterOopMap& oop_mask, 306 const frame& fr) { 307 308 assert(result != NULL, "invariant"); 309 310 for (int i = 0; i < length; ++i) { 311 const intptr_t* const addr = fr.interpreter_frame_local_at(i); 312 assert(addr != NULL, "invariant"); 313 assert(addr >= fr.sp(), "must be inside the frame"); 314 315 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, i, addr); 316 assert(sv != NULL, "sanity check"); 317 318 result->add(sv); 319 } 320 } 321 322 static void stack_expressions(StackValueCollection* result, 323 int length, 324 int max_locals, 325 const InterpreterOopMap& oop_mask, 326 const frame& fr) { 327 328 assert(result != NULL, "invariant"); 329 330 for (int i = 0; i < length; ++i) { 331 const intptr_t* addr = fr.interpreter_frame_expression_stack_at(i); 332 assert(addr != NULL, "invariant"); 333 if (!is_in_expression_stack(fr, addr)) { 334 // Need to ensure no bogus escapes. 335 addr = NULL; 336 } 337 338 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, 339 i + max_locals, 340 addr); 341 assert(sv != NULL, "sanity check"); 342 343 result->add(sv); 344 } 345 } 346 347 StackValueCollection* interpretedVFrame::locals() const { 348 return stack_data(false); 349 } 350 351 StackValueCollection* interpretedVFrame::expressions() const { 352 return stack_data(true); 353 } 354 355 /* 356 * Worker routine for fetching references and/or values 357 * for a particular bci in the interpretedVFrame. 358 * 359 * Returns data for either "locals" or "expressions", 360 * using bci relative oop_map (oop_mask) information. 361 * 362 * @param expressions bool switch controlling what data to return 363 (false == locals / true == expression) 364 * 365 */ 366 StackValueCollection* interpretedVFrame::stack_data(bool expressions) const { 367 368 InterpreterOopMap oop_mask; 369 // oopmap for current bci 370 if (TraceDeoptimization && Verbose) { 371 methodHandle m_h(Thread::current(), method()); 372 OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask); 373 } else { 374 method()->mask_for(bci(), &oop_mask); 375 } 376 377 const int mask_len = oop_mask.number_of_entries(); 378 379 // If the method is native, method()->max_locals() is not telling the truth. 380 // For our purposes, max locals instead equals the size of parameters. 381 const int max_locals = method()->is_native() ? 382 method()->size_of_parameters() : method()->max_locals(); 383 384 assert(mask_len >= max_locals, "invariant"); 385 386 const int length = expressions ? mask_len - max_locals : max_locals; 387 assert(length >= 0, "invariant"); 388 389 StackValueCollection* const result = new StackValueCollection(length); 390 391 if (0 == length) { 392 return result; 393 } 394 395 if (expressions) { 396 stack_expressions(result, length, max_locals, oop_mask, fr()); 397 } else { 398 stack_locals(result, length, oop_mask, fr()); 399 } 400 401 assert(length == result->size(), "invariant"); 402 403 return result; 404 } 405 406 void interpretedVFrame::set_locals(StackValueCollection* values) const { 407 if (values == NULL || values->size() == 0) return; 408 409 // If the method is native, max_locals is not telling the truth. 410 // maxlocals then equals the size of parameters 411 const int max_locals = method()->is_native() ? 412 method()->size_of_parameters() : method()->max_locals(); 413 414 assert(max_locals == values->size(), "Mismatch between actual stack format and supplied data"); 415 416 // handle locals 417 for (int i = 0; i < max_locals; i++) { 418 // Find stack location 419 intptr_t *addr = locals_addr_at(i); 420 421 // Depending on oop/int put it in the right package 422 const StackValue* const sv = values->at(i); 423 assert(sv != NULL, "sanity check"); 424 if (sv->type() == T_OBJECT) { 425 *(oop *) addr = (sv->get_obj())(); 426 } else { // integer 427 *addr = sv->get_int(); 428 } 429 } 430 } 431 432 // ------------- cChunk -------------- 433 434 entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) 435 : externalVFrame(fr, reg_map, thread) {} 436 437 438 void vframeStreamCommon::found_bad_method_frame() { 439 // 6379830 Cut point for an assertion that occasionally fires when 440 // we are using the performance analyzer. 441 // Disable this assert when testing the analyzer with fastdebug. 442 // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number) 443 assert(false, "invalid bci or invalid scope desc"); 444 } 445 446 // top-frame will be skipped 447 vframeStream::vframeStream(JavaThread* thread, frame top_frame, 448 bool stop_at_java_call_stub) : vframeStreamCommon(thread) { 449 _stop_at_java_call_stub = stop_at_java_call_stub; 450 451 // skip top frame, as it may not be at safepoint 452 _frame = top_frame.sender(&_reg_map); 453 while (!fill_from_frame()) { 454 _frame = _frame.sender(&_reg_map); 455 } 456 } 457 458 459 // Step back n frames, skip any pseudo frames in between. 460 // This function is used in Class.forName, Class.newInstance, Method.Invoke, 461 // AccessController.doPrivileged. 462 void vframeStreamCommon::security_get_caller_frame(int depth) { 463 assert(depth >= 0, err_msg("invalid depth: %d", depth)); 464 for (int n = 0; !at_end(); security_next()) { 465 if (!method()->is_ignored_by_security_stack_walk()) { 466 if (n == depth) { 467 // We have reached the desired depth; return. 468 return; 469 } 470 n++; // this is a non-skipped frame; count it against the depth 471 } 472 } 473 // NOTE: At this point there were not enough frames on the stack 474 // to walk to depth. Callers of this method have to check for at_end. 475 } 476 477 478 void vframeStreamCommon::security_next() { 479 if (method()->is_prefixed_native()) { 480 skip_prefixed_method_and_wrappers(); // calls next() 481 } else { 482 next(); 483 } 484 } 485 486 487 void vframeStreamCommon::skip_prefixed_method_and_wrappers() { 488 ResourceMark rm; 489 HandleMark hm; 490 491 int method_prefix_count = 0; 492 char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count); 493 KlassHandle prefixed_klass(method()->method_holder()); 494 const char* prefixed_name = method()->name()->as_C_string(); 495 size_t prefixed_name_len = strlen(prefixed_name); 496 int prefix_index = method_prefix_count-1; 497 498 while (!at_end()) { 499 next(); 500 if (method()->method_holder() != prefixed_klass()) { 501 break; // classes don't match, can't be a wrapper 502 } 503 const char* name = method()->name()->as_C_string(); 504 size_t name_len = strlen(name); 505 size_t prefix_len = prefixed_name_len - name_len; 506 if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) { 507 break; // prefixed name isn't prefixed version of method name, can't be a wrapper 508 } 509 for (; prefix_index >= 0; --prefix_index) { 510 const char* possible_prefix = method_prefixes[prefix_index]; 511 size_t possible_prefix_len = strlen(possible_prefix); 512 if (possible_prefix_len == prefix_len && 513 strncmp(possible_prefix, prefixed_name, prefix_len) == 0) { 514 break; // matching prefix found 515 } 516 } 517 if (prefix_index < 0) { 518 break; // didn't find the prefix, can't be a wrapper 519 } 520 prefixed_name = name; 521 prefixed_name_len = name_len; 522 } 523 } 524 525 526 void vframeStreamCommon::skip_reflection_related_frames() { 527 while (!at_end() && 528 (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) || 529 method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass()))) { 530 next(); 531 } 532 } 533 534 535 #ifndef PRODUCT 536 void vframe::print() { 537 if (WizardMode) _fr.print_value_on(tty,NULL); 538 } 539 540 541 void vframe::print_value() const { 542 ((vframe*)this)->print(); 543 } 544 545 546 void entryVFrame::print_value() const { 547 ((entryVFrame*)this)->print(); 548 } 549 550 void entryVFrame::print() { 551 vframe::print(); 552 tty->print_cr("C Chunk inbetween Java"); 553 tty->print_cr("C link " INTPTR_FORMAT, _fr.link()); 554 } 555 556 557 // ------------- javaVFrame -------------- 558 559 static void print_stack_values(const char* title, StackValueCollection* values) { 560 if (values->is_empty()) return; 561 tty->print_cr("\t%s:", title); 562 values->print(); 563 } 564 565 566 void javaVFrame::print() { 567 ResourceMark rm; 568 vframe::print(); 569 tty->print("\t"); 570 method()->print_value(); 571 tty->cr(); 572 tty->print_cr("\tbci: %d", bci()); 573 574 print_stack_values("locals", locals()); 575 print_stack_values("expressions", expressions()); 576 577 GrowableArray<MonitorInfo*>* list = monitors(); 578 if (list->is_empty()) return; 579 tty->print_cr("\tmonitor list:"); 580 for (int index = (list->length()-1); index >= 0; index--) { 581 MonitorInfo* monitor = list->at(index); 582 tty->print("\t obj\t"); 583 if (monitor->owner_is_scalar_replaced()) { 584 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass()); 585 tty->print("( is scalar replaced %s)", k->external_name()); 586 } else if (monitor->owner() == NULL) { 587 tty->print("( null )"); 588 } else { 589 monitor->owner()->print_value(); 590 tty->print("(owner=" INTPTR_FORMAT ")", (address)monitor->owner()); 591 } 592 if (monitor->eliminated()) 593 if(is_compiled_frame()) 594 tty->print(" ( lock is eliminated in compiled frame )"); 595 else 596 tty->print(" ( lock is eliminated, frame not compiled )"); 597 tty->cr(); 598 tty->print("\t "); 599 monitor->lock()->print_on(tty); 600 tty->cr(); 601 } 602 } 603 604 605 void javaVFrame::print_value() const { 606 Method* m = method(); 607 InstanceKlass* k = m->method_holder(); 608 tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")", 609 _fr.sp(), _fr.unextended_sp(), _fr.fp(), _fr.pc()); 610 tty->print("%s.%s", k->internal_name(), m->name()->as_C_string()); 611 612 if (!m->is_native()) { 613 Symbol* source_name = k->source_file_name(); 614 int line_number = m->line_number_from_bci(bci()); 615 if (source_name != NULL && (line_number != -1)) { 616 tty->print("(%s:%d)", source_name->as_C_string(), line_number); 617 } 618 } else { 619 tty->print("(Native Method)"); 620 } 621 // Check frame size and print warning if it looks suspiciously large 622 if (fr().sp() != NULL) { 623 RegisterMap map = *register_map(); 624 uint size = fr().frame_size(&map); 625 #ifdef _LP64 626 if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); 627 #else 628 if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); 629 #endif 630 } 631 } 632 633 634 bool javaVFrame::structural_compare(javaVFrame* other) { 635 // Check static part 636 if (method() != other->method()) return false; 637 if (bci() != other->bci()) return false; 638 639 // Check locals 640 StackValueCollection *locs = locals(); 641 StackValueCollection *other_locs = other->locals(); 642 assert(locs->size() == other_locs->size(), "sanity check"); 643 int i; 644 for(i = 0; i < locs->size(); i++) { 645 // it might happen the compiler reports a conflict and 646 // the interpreter reports a bogus int. 647 if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue; 648 if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue; 649 650 if (!locs->at(i)->equal(other_locs->at(i))) 651 return false; 652 } 653 654 // Check expressions 655 StackValueCollection* exprs = expressions(); 656 StackValueCollection* other_exprs = other->expressions(); 657 assert(exprs->size() == other_exprs->size(), "sanity check"); 658 for(i = 0; i < exprs->size(); i++) { 659 if (!exprs->at(i)->equal(other_exprs->at(i))) 660 return false; 661 } 662 663 return true; 664 } 665 666 667 void javaVFrame::print_activation(int index) const { 668 // frame number and method 669 tty->print("%2d - ", index); 670 ((vframe*)this)->print_value(); 671 tty->cr(); 672 673 if (WizardMode) { 674 ((vframe*)this)->print(); 675 tty->cr(); 676 } 677 } 678 679 680 void javaVFrame::verify() const { 681 } 682 683 684 void interpretedVFrame::verify() const { 685 } 686 687 688 // ------------- externalVFrame -------------- 689 690 void externalVFrame::print() { 691 _fr.print_value_on(tty,NULL); 692 } 693 694 695 void externalVFrame::print_value() const { 696 ((vframe*)this)->print(); 697 } 698 #endif // PRODUCT