1 /* 2 * Copyright (c) 1997, 2014, 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 st->print("\t- eliminated <owner is scalar replaced> (a %s)", k->external_name()); 193 } else { 194 oop obj = monitor->owner(); 195 if (obj != NULL) { 196 print_locked_object_class_name(st, obj, "eliminated"); 197 } 198 } 199 continue; 200 } 201 if (monitor->owner() != NULL) { 202 // the monitor is associated with an object, i.e., it is locked 203 204 // First, assume we have the monitor locked. If we haven't found an 205 // owned monitor before and this is the first frame, then we need to 206 // see if we have completed the lock or we are blocked trying to 207 // acquire it - we can only be blocked if the monitor is inflated 208 209 const char *lock_state = "locked"; // assume we have the monitor locked 210 if (!found_first_monitor && frame_count == 0) { 211 markOop mark = monitor->owner()->mark(); 212 if (mark->has_monitor() && 213 ( // we have marked ourself as pending on this monitor 214 mark->monitor() == thread()->current_pending_monitor() || 215 // we are not the owner of this monitor 216 !mark->monitor()->is_entered(thread()) 217 )) { 218 lock_state = "waiting to lock"; 219 } 220 } 221 222 found_first_monitor = true; 223 print_locked_object_class_name(st, monitor->owner(), lock_state); 224 } 225 } 226 } 227 } 228 229 // ------------- interpretedVFrame -------------- 230 231 u_char* interpretedVFrame::bcp() const { 232 return fr().interpreter_frame_bcp(); 233 } 234 235 void interpretedVFrame::set_bcp(u_char* bcp) { 236 fr().interpreter_frame_set_bcp(bcp); 237 } 238 239 intptr_t* interpretedVFrame::locals_addr_at(int offset) const { 240 assert(fr().is_interpreted_frame(), "frame should be an interpreted frame"); 241 return fr().interpreter_frame_local_at(offset); 242 } 243 244 245 GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const { 246 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5); 247 for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin())); 248 current >= fr().interpreter_frame_monitor_end(); 249 current = fr().previous_monitor_in_interpreter_frame(current)) { 250 result->push(new MonitorInfo(current->obj(), current->lock(), false, false)); 251 } 252 return result; 253 } 254 255 int interpretedVFrame::bci() const { 256 return method()->bci_from(bcp()); 257 } 258 259 Method* interpretedVFrame::method() const { 260 return fr().interpreter_frame_method(); 261 } 262 263 static StackValue* create_stack_value_from_oop_map(const InterpreterOopMap& oop_mask, 264 int index, 265 const intptr_t* const addr) { 266 267 assert(index >= 0 && 268 index < oop_mask.number_of_entries(), "invariant"); 269 270 // categorize using oop_mask 271 if (oop_mask.is_oop(index)) { 272 // reference (oop) "r" 273 Handle h(addr != NULL ? (*(oop*)addr) : (oop)NULL); 274 return new StackValue(h); 275 } 276 // value (integer) "v" 277 return new StackValue(addr != NULL ? *addr : 0); 278 } 279 280 static bool is_in_expression_stack(const frame& fr, const intptr_t* const addr) { 281 assert(addr != NULL, "invariant"); 282 283 // Ensure to be 'inside' the expresion stack (i.e., addr >= sp for Intel). 284 // In case of exceptions, the expression stack is invalid and the sp 285 // will be reset to express this condition. 286 if (frame::interpreter_frame_expression_stack_direction() > 0) { 287 return addr <= fr.interpreter_frame_tos_address(); 288 } 289 290 return addr >= fr.interpreter_frame_tos_address(); 291 } 292 293 static void stack_locals(StackValueCollection* result, 294 int length, 295 const InterpreterOopMap& oop_mask, 296 const frame& fr) { 297 298 assert(result != NULL, "invariant"); 299 300 for (int i = 0; i < length; ++i) { 301 const intptr_t* const addr = fr.interpreter_frame_local_at(i); 302 assert(addr != NULL, "invariant"); 303 assert(addr >= fr.sp(), "must be inside the frame"); 304 305 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, i, addr); 306 assert(sv != NULL, "sanity check"); 307 308 result->add(sv); 309 } 310 } 311 312 static void stack_expressions(StackValueCollection* result, 313 int length, 314 int max_locals, 315 const InterpreterOopMap& oop_mask, 316 const frame& fr) { 317 318 assert(result != NULL, "invariant"); 319 320 for (int i = 0; i < length; ++i) { 321 const intptr_t* addr = fr.interpreter_frame_expression_stack_at(i); 322 assert(addr != NULL, "invariant"); 323 if (!is_in_expression_stack(fr, addr)) { 324 // Need to ensure no bogus escapes. 325 addr = NULL; 326 } 327 328 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, 329 i + max_locals, 330 addr); 331 assert(sv != NULL, "sanity check"); 332 333 result->add(sv); 334 } 335 } 336 337 StackValueCollection* interpretedVFrame::locals() const { 338 return stack_data(false); 339 } 340 341 StackValueCollection* interpretedVFrame::expressions() const { 342 return stack_data(true); 343 } 344 345 /* 346 * Worker routine for fetching references and/or values 347 * for a particular bci in the interpretedVFrame. 348 * 349 * Returns data for either "locals" or "expressions", 350 * using bci relative oop_map (oop_mask) information. 351 * 352 * @param expressions bool switch controlling what data to return 353 (false == locals / true == expression) 354 * 355 */ 356 StackValueCollection* interpretedVFrame::stack_data(bool expressions) const { 357 358 InterpreterOopMap oop_mask; 359 // oopmap for current bci 360 if (TraceDeoptimization && Verbose) { 361 methodHandle m_h(Thread::current(), method()); 362 OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask); 363 } else { 364 method()->mask_for(bci(), &oop_mask); 365 } 366 367 const int mask_len = oop_mask.number_of_entries(); 368 369 // If the method is native, method()->max_locals() is not telling the truth. 370 // For our purposes, max locals instead equals the size of parameters. 371 const int max_locals = method()->is_native() ? 372 method()->size_of_parameters() : method()->max_locals(); 373 374 assert(mask_len >= max_locals, "invariant"); 375 376 const int length = expressions ? mask_len - max_locals : max_locals; 377 assert(length >= 0, "invariant"); 378 379 StackValueCollection* const result = new StackValueCollection(length); 380 381 if (0 == length) { 382 return result; 383 } 384 385 if (expressions) { 386 stack_expressions(result, length, max_locals, oop_mask, fr()); 387 } else { 388 stack_locals(result, length, oop_mask, fr()); 389 } 390 391 assert(length == result->size(), "invariant"); 392 393 return result; 394 } 395 396 void interpretedVFrame::set_locals(StackValueCollection* values) const { 397 if (values == NULL || values->size() == 0) return; 398 399 // If the method is native, max_locals is not telling the truth. 400 // maxlocals then equals the size of parameters 401 const int max_locals = method()->is_native() ? 402 method()->size_of_parameters() : method()->max_locals(); 403 404 assert(max_locals == values->size(), "Mismatch between actual stack format and supplied data"); 405 406 // handle locals 407 for (int i = 0; i < max_locals; i++) { 408 // Find stack location 409 intptr_t *addr = locals_addr_at(i); 410 411 // Depending on oop/int put it in the right package 412 const StackValue* const sv = values->at(i); 413 assert(sv != NULL, "sanity check"); 414 if (sv->type() == T_OBJECT) { 415 *(oop *) addr = (sv->get_obj())(); 416 } else { // integer 417 *addr = sv->get_int(); 418 } 419 } 420 } 421 422 // ------------- cChunk -------------- 423 424 entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) 425 : externalVFrame(fr, reg_map, thread) {} 426 427 428 void vframeStreamCommon::found_bad_method_frame() { 429 // 6379830 Cut point for an assertion that occasionally fires when 430 // we are using the performance analyzer. 431 // Disable this assert when testing the analyzer with fastdebug. 432 // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number) 433 assert(false, "invalid bci or invalid scope desc"); 434 } 435 436 // top-frame will be skipped 437 vframeStream::vframeStream(JavaThread* thread, frame top_frame, 438 bool stop_at_java_call_stub) : vframeStreamCommon(thread) { 439 _stop_at_java_call_stub = stop_at_java_call_stub; 440 441 // skip top frame, as it may not be at safepoint 442 _frame = top_frame.sender(&_reg_map); 443 while (!fill_from_frame()) { 444 _frame = _frame.sender(&_reg_map); 445 } 446 } 447 448 449 // Step back n frames, skip any pseudo frames in between. 450 // This function is used in Class.forName, Class.newInstance, Method.Invoke, 451 // AccessController.doPrivileged. 452 void vframeStreamCommon::security_get_caller_frame(int depth) { 453 assert(depth >= 0, err_msg("invalid depth: %d", depth)); 454 for (int n = 0; !at_end(); security_next()) { 455 if (!method()->is_ignored_by_security_stack_walk()) { 456 if (n == depth) { 457 // We have reached the desired depth; return. 458 return; 459 } 460 n++; // this is a non-skipped frame; count it against the depth 461 } 462 } 463 // NOTE: At this point there were not enough frames on the stack 464 // to walk to depth. Callers of this method have to check for at_end. 465 } 466 467 468 void vframeStreamCommon::security_next() { 469 if (method()->is_prefixed_native()) { 470 skip_prefixed_method_and_wrappers(); // calls next() 471 } else { 472 next(); 473 } 474 } 475 476 477 void vframeStreamCommon::skip_prefixed_method_and_wrappers() { 478 ResourceMark rm; 479 HandleMark hm; 480 481 int method_prefix_count = 0; 482 char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count); 483 KlassHandle prefixed_klass(method()->method_holder()); 484 const char* prefixed_name = method()->name()->as_C_string(); 485 size_t prefixed_name_len = strlen(prefixed_name); 486 int prefix_index = method_prefix_count-1; 487 488 while (!at_end()) { 489 next(); 490 if (method()->method_holder() != prefixed_klass()) { 491 break; // classes don't match, can't be a wrapper 492 } 493 const char* name = method()->name()->as_C_string(); 494 size_t name_len = strlen(name); 495 size_t prefix_len = prefixed_name_len - name_len; 496 if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) { 497 break; // prefixed name isn't prefixed version of method name, can't be a wrapper 498 } 499 for (; prefix_index >= 0; --prefix_index) { 500 const char* possible_prefix = method_prefixes[prefix_index]; 501 size_t possible_prefix_len = strlen(possible_prefix); 502 if (possible_prefix_len == prefix_len && 503 strncmp(possible_prefix, prefixed_name, prefix_len) == 0) { 504 break; // matching prefix found 505 } 506 } 507 if (prefix_index < 0) { 508 break; // didn't find the prefix, can't be a wrapper 509 } 510 prefixed_name = name; 511 prefixed_name_len = name_len; 512 } 513 } 514 515 516 void vframeStreamCommon::skip_reflection_related_frames() { 517 while (!at_end() && 518 (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) || 519 method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass()))) { 520 next(); 521 } 522 } 523 524 525 #ifndef PRODUCT 526 void vframe::print() { 527 if (WizardMode) _fr.print_value_on(tty,NULL); 528 } 529 530 531 void vframe::print_value() const { 532 ((vframe*)this)->print(); 533 } 534 535 536 void entryVFrame::print_value() const { 537 ((entryVFrame*)this)->print(); 538 } 539 540 void entryVFrame::print() { 541 vframe::print(); 542 tty->print_cr("C Chunk inbetween Java"); 543 tty->print_cr("C link " INTPTR_FORMAT, _fr.link()); 544 } 545 546 547 // ------------- javaVFrame -------------- 548 549 static void print_stack_values(const char* title, StackValueCollection* values) { 550 if (values->is_empty()) return; 551 tty->print_cr("\t%s:", title); 552 values->print(); 553 } 554 555 556 void javaVFrame::print() { 557 ResourceMark rm; 558 vframe::print(); 559 tty->print("\t"); 560 method()->print_value(); 561 tty->cr(); 562 tty->print_cr("\tbci: %d", bci()); 563 564 print_stack_values("locals", locals()); 565 print_stack_values("expressions", expressions()); 566 567 GrowableArray<MonitorInfo*>* list = monitors(); 568 if (list->is_empty()) return; 569 tty->print_cr("\tmonitor list:"); 570 for (int index = (list->length()-1); index >= 0; index--) { 571 MonitorInfo* monitor = list->at(index); 572 tty->print("\t obj\t"); 573 if (monitor->owner_is_scalar_replaced()) { 574 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass()); 575 tty->print("( is scalar replaced %s)", k->external_name()); 576 } else if (monitor->owner() == NULL) { 577 tty->print("( null )"); 578 } else { 579 monitor->owner()->print_value(); 580 tty->print("(" INTPTR_FORMAT ")", (address)monitor->owner()); 581 } 582 if (monitor->eliminated() && is_compiled_frame()) 583 tty->print(" ( lock is eliminated )"); 584 tty->cr(); 585 tty->print("\t "); 586 monitor->lock()->print_on(tty); 587 tty->cr(); 588 } 589 } 590 591 592 void javaVFrame::print_value() const { 593 Method* m = method(); 594 InstanceKlass* k = m->method_holder(); 595 tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")", 596 _fr.sp(), _fr.unextended_sp(), _fr.fp(), _fr.pc()); 597 tty->print("%s.%s", k->internal_name(), m->name()->as_C_string()); 598 599 if (!m->is_native()) { 600 Symbol* source_name = k->source_file_name(); 601 int line_number = m->line_number_from_bci(bci()); 602 if (source_name != NULL && (line_number != -1)) { 603 tty->print("(%s:%d)", source_name->as_C_string(), line_number); 604 } 605 } else { 606 tty->print("(Native Method)"); 607 } 608 // Check frame size and print warning if it looks suspiciously large 609 if (fr().sp() != NULL) { 610 RegisterMap map = *register_map(); 611 uint size = fr().frame_size(&map); 612 #ifdef _LP64 613 if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); 614 #else 615 if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); 616 #endif 617 } 618 } 619 620 621 bool javaVFrame::structural_compare(javaVFrame* other) { 622 // Check static part 623 if (method() != other->method()) return false; 624 if (bci() != other->bci()) return false; 625 626 // Check locals 627 StackValueCollection *locs = locals(); 628 StackValueCollection *other_locs = other->locals(); 629 assert(locs->size() == other_locs->size(), "sanity check"); 630 int i; 631 for(i = 0; i < locs->size(); i++) { 632 // it might happen the compiler reports a conflict and 633 // the interpreter reports a bogus int. 634 if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue; 635 if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue; 636 637 if (!locs->at(i)->equal(other_locs->at(i))) 638 return false; 639 } 640 641 // Check expressions 642 StackValueCollection* exprs = expressions(); 643 StackValueCollection* other_exprs = other->expressions(); 644 assert(exprs->size() == other_exprs->size(), "sanity check"); 645 for(i = 0; i < exprs->size(); i++) { 646 if (!exprs->at(i)->equal(other_exprs->at(i))) 647 return false; 648 } 649 650 return true; 651 } 652 653 654 void javaVFrame::print_activation(int index) const { 655 // frame number and method 656 tty->print("%2d - ", index); 657 ((vframe*)this)->print_value(); 658 tty->cr(); 659 660 if (WizardMode) { 661 ((vframe*)this)->print(); 662 tty->cr(); 663 } 664 } 665 666 667 void javaVFrame::verify() const { 668 } 669 670 671 void interpretedVFrame::verify() const { 672 } 673 674 675 // ------------- externalVFrame -------------- 676 677 void externalVFrame::print() { 678 _fr.print_value_on(tty,NULL); 679 } 680 681 682 void externalVFrame::print_value() const { 683 ((vframe*)this)->print(); 684 } 685 #endif // PRODUCT