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 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, (address)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 ResourceMark rm; 161 162 // If this is the first frame and it is java.lang.Object.wait(...) 163 // then print out the receiver. Locals are not always available, 164 // e.g., compiled native frames have no scope so there are no locals. 165 if (frame_count == 0) { 166 if (method()->name() == vmSymbols::wait_name() && 167 method()->method_holder()->name() == vmSymbols::java_lang_Object()) { 168 const char *wait_state = "waiting on"; // assume we are waiting 169 // If earlier in the output we reported java.lang.Thread.State == 170 // "WAITING (on object monitor)" and now we report "waiting on", then 171 // we are still waiting for notification or timeout. Otherwise if 172 // we earlier reported java.lang.Thread.State == "BLOCKED (on object 173 // monitor)", then we are actually waiting to re-lock the monitor. 174 // At this level we can't distinguish the two cases to report 175 // "waited on" rather than "waiting on" for the second case. 176 StackValueCollection* locs = locals(); 177 if (!locs->is_empty()) { 178 StackValue* sv = locs->at(0); 179 if (sv->type() == T_OBJECT) { 180 Handle o = locs->at(0)->get_obj(); 181 print_locked_object_class_name(st, o, wait_state); 182 } 183 } else { 184 st->print_cr("\t- %s <no object reference available>", wait_state); 185 } 186 } else if (thread()->current_park_blocker() != NULL) { 187 oop obj = thread()->current_park_blocker(); 188 Klass* k = obj->klass(); 189 st->print_cr("\t- %s <" INTPTR_FORMAT "> (a %s)", "parking to wait for ", (address)obj, k->external_name()); 190 } 191 } 192 193 // Print out all monitors that we have locked, or are trying to lock, 194 // including re-locking after being notified or timing out in a wait(). 195 GrowableArray<MonitorInfo*>* mons = monitors(); 196 if (!mons->is_empty()) { 197 bool found_first_monitor = false; 198 for (int index = (mons->length()-1); index >= 0; index--) { 199 MonitorInfo* monitor = mons->at(index); 200 if (monitor->eliminated() && is_compiled_frame()) { // Eliminated in compiled code 201 if (monitor->owner_is_scalar_replaced()) { 202 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass()); 203 // format below for lockbits matches this one. 204 st->print("\t- eliminated <owner is scalar replaced> (a %s)", k->external_name()); 205 } else { 206 oop obj = monitor->owner(); 207 if (obj != NULL) { 208 print_locked_object_class_name(st, obj, "eliminated"); 209 } 210 } 211 continue; 212 } 213 if (monitor->owner() != NULL) { 214 // the monitor is associated with an object, i.e., it is locked 215 216 markOop mark = NULL; 217 const char *lock_state = "locked"; // assume we have the monitor locked 218 if (!found_first_monitor && frame_count == 0) { 219 // If this is the first frame and we haven't found an owned 220 // monitor before, then we need to see if we have completed 221 // the lock or if we are blocked trying to acquire it. Only 222 // an inflated monitor that is first on the monitor list in 223 // the first frame can block us on a monitor enter. 224 mark = monitor->owner()->mark(); 225 if (mark->has_monitor() && 226 ( // we have marked ourself as pending on this monitor 227 mark->monitor() == thread()->current_pending_monitor() || 228 // we are not the owner of this monitor 229 !mark->monitor()->is_entered(thread()) 230 )) { 231 lock_state = "waiting to lock"; 232 } else { 233 // We own the monitor which is not as interesting so 234 // disable the extra printing below. 235 mark = NULL; 236 } 237 } else if (frame_count != 0 && ObjectMonitor::Knob_Verbose) { 238 // This is not the first frame so we either own this monitor 239 // or we owned the monitor before and called wait(). Because 240 // wait() could have been called on any monitor in a lower 241 // numbered frame on the stack, we have to check all the 242 // monitors on the list for this frame. 243 // Note: Only enable this new output line in verbose mode 244 // since existing tests are not ready for it. 245 mark = monitor->owner()->mark(); 246 if (mark->has_monitor() && 247 ( // we have marked ourself as pending on this monitor 248 mark->monitor() == thread()->current_pending_monitor() || 249 // we are not the owner of this monitor 250 !mark->monitor()->is_entered(thread()) 251 )) { 252 lock_state = "waiting to re-lock in wait()"; 253 } else { 254 // We own the monitor which is not as interesting so 255 // disable the extra printing below. 256 mark = NULL; 257 } 258 } 259 print_locked_object_class_name(st, monitor->owner(), lock_state); 260 if (ObjectMonitor::Knob_Verbose && mark != NULL) { 261 st->print("\t- lockbits="); 262 mark->print_on(st); 263 st->cr(); 264 } 265 266 found_first_monitor = true; 267 } 268 } 269 } 270 } 271 272 // ------------- interpretedVFrame -------------- 273 274 u_char* interpretedVFrame::bcp() const { 275 return fr().interpreter_frame_bcp(); 276 } 277 278 void interpretedVFrame::set_bcp(u_char* bcp) { 279 fr().interpreter_frame_set_bcp(bcp); 280 } 281 282 intptr_t* interpretedVFrame::locals_addr_at(int offset) const { 283 assert(fr().is_interpreted_frame(), "frame should be an interpreted frame"); 284 return fr().interpreter_frame_local_at(offset); 285 } 286 287 288 GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const { 289 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5); 290 for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin())); 291 current >= fr().interpreter_frame_monitor_end(); 292 current = fr().previous_monitor_in_interpreter_frame(current)) { 293 result->push(new MonitorInfo(current->obj(), current->lock(), false, false)); 294 } 295 return result; 296 } 297 298 int interpretedVFrame::bci() const { 299 return method()->bci_from(bcp()); 300 } 301 302 Method* interpretedVFrame::method() const { 303 return fr().interpreter_frame_method(); 304 } 305 306 static StackValue* create_stack_value_from_oop_map(const InterpreterOopMap& oop_mask, 307 int index, 308 const intptr_t* const addr) { 309 310 assert(index >= 0 && 311 index < oop_mask.number_of_entries(), "invariant"); 312 313 // categorize using oop_mask 314 if (oop_mask.is_oop(index)) { 315 // reference (oop) "r" 316 Handle h(addr != NULL ? (*(oop*)addr) : (oop)NULL); 317 return new StackValue(h); 318 } 319 // value (integer) "v" 320 return new StackValue(addr != NULL ? *addr : 0); 321 } 322 323 static bool is_in_expression_stack(const frame& fr, const intptr_t* const addr) { 324 assert(addr != NULL, "invariant"); 325 326 // Ensure to be 'inside' the expresion stack (i.e., addr >= sp for Intel). 327 // In case of exceptions, the expression stack is invalid and the sp 328 // will be reset to express this condition. 329 if (frame::interpreter_frame_expression_stack_direction() > 0) { 330 return addr <= fr.interpreter_frame_tos_address(); 331 } 332 333 return addr >= fr.interpreter_frame_tos_address(); 334 } 335 336 static void stack_locals(StackValueCollection* result, 337 int length, 338 const InterpreterOopMap& oop_mask, 339 const frame& fr) { 340 341 assert(result != NULL, "invariant"); 342 343 for (int i = 0; i < length; ++i) { 344 const intptr_t* const addr = fr.interpreter_frame_local_at(i); 345 assert(addr != NULL, "invariant"); 346 assert(addr >= fr.sp(), "must be inside the frame"); 347 348 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, i, addr); 349 assert(sv != NULL, "sanity check"); 350 351 result->add(sv); 352 } 353 } 354 355 static void stack_expressions(StackValueCollection* result, 356 int length, 357 int max_locals, 358 const InterpreterOopMap& oop_mask, 359 const frame& fr) { 360 361 assert(result != NULL, "invariant"); 362 363 for (int i = 0; i < length; ++i) { 364 const intptr_t* addr = fr.interpreter_frame_expression_stack_at(i); 365 assert(addr != NULL, "invariant"); 366 if (!is_in_expression_stack(fr, addr)) { 367 // Need to ensure no bogus escapes. 368 addr = NULL; 369 } 370 371 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, 372 i + max_locals, 373 addr); 374 assert(sv != NULL, "sanity check"); 375 376 result->add(sv); 377 } 378 } 379 380 StackValueCollection* interpretedVFrame::locals() const { 381 return stack_data(false); 382 } 383 384 StackValueCollection* interpretedVFrame::expressions() const { 385 return stack_data(true); 386 } 387 388 /* 389 * Worker routine for fetching references and/or values 390 * for a particular bci in the interpretedVFrame. 391 * 392 * Returns data for either "locals" or "expressions", 393 * using bci relative oop_map (oop_mask) information. 394 * 395 * @param expressions bool switch controlling what data to return 396 (false == locals / true == expression) 397 * 398 */ 399 StackValueCollection* interpretedVFrame::stack_data(bool expressions) const { 400 401 InterpreterOopMap oop_mask; 402 // oopmap for current bci 403 if (TraceDeoptimization && Verbose) { 404 methodHandle m_h(Thread::current(), method()); 405 OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask); 406 } else { 407 method()->mask_for(bci(), &oop_mask); 408 } 409 410 const int mask_len = oop_mask.number_of_entries(); 411 412 // If the method is native, method()->max_locals() is not telling the truth. 413 // For our purposes, max locals instead equals the size of parameters. 414 const int max_locals = method()->is_native() ? 415 method()->size_of_parameters() : method()->max_locals(); 416 417 assert(mask_len >= max_locals, "invariant"); 418 419 const int length = expressions ? mask_len - max_locals : max_locals; 420 assert(length >= 0, "invariant"); 421 422 StackValueCollection* const result = new StackValueCollection(length); 423 424 if (0 == length) { 425 return result; 426 } 427 428 if (expressions) { 429 stack_expressions(result, length, max_locals, oop_mask, fr()); 430 } else { 431 stack_locals(result, length, oop_mask, fr()); 432 } 433 434 assert(length == result->size(), "invariant"); 435 436 return result; 437 } 438 439 void interpretedVFrame::set_locals(StackValueCollection* values) const { 440 if (values == NULL || values->size() == 0) return; 441 442 // If the method is native, max_locals is not telling the truth. 443 // maxlocals then equals the size of parameters 444 const int max_locals = method()->is_native() ? 445 method()->size_of_parameters() : method()->max_locals(); 446 447 assert(max_locals == values->size(), "Mismatch between actual stack format and supplied data"); 448 449 // handle locals 450 for (int i = 0; i < max_locals; i++) { 451 // Find stack location 452 intptr_t *addr = locals_addr_at(i); 453 454 // Depending on oop/int put it in the right package 455 const StackValue* const sv = values->at(i); 456 assert(sv != NULL, "sanity check"); 457 if (sv->type() == T_OBJECT) { 458 *(oop *) addr = (sv->get_obj())(); 459 } else { // integer 460 *addr = sv->get_int(); 461 } 462 } 463 } 464 465 // ------------- cChunk -------------- 466 467 entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) 468 : externalVFrame(fr, reg_map, thread) {} 469 470 471 void vframeStreamCommon::found_bad_method_frame() { 472 // 6379830 Cut point for an assertion that occasionally fires when 473 // we are using the performance analyzer. 474 // Disable this assert when testing the analyzer with fastdebug. 475 // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number) 476 assert(false, "invalid bci or invalid scope desc"); 477 } 478 479 // top-frame will be skipped 480 vframeStream::vframeStream(JavaThread* thread, frame top_frame, 481 bool stop_at_java_call_stub) : vframeStreamCommon(thread) { 482 _stop_at_java_call_stub = stop_at_java_call_stub; 483 484 // skip top frame, as it may not be at safepoint 485 _frame = top_frame.sender(&_reg_map); 486 while (!fill_from_frame()) { 487 _frame = _frame.sender(&_reg_map); 488 } 489 } 490 491 492 // Step back n frames, skip any pseudo frames in between. 493 // This function is used in Class.forName, Class.newInstance, Method.Invoke, 494 // AccessController.doPrivileged. 495 void vframeStreamCommon::security_get_caller_frame(int depth) { 496 assert(depth >= 0, err_msg("invalid depth: %d", depth)); 497 for (int n = 0; !at_end(); security_next()) { 498 if (!method()->is_ignored_by_security_stack_walk()) { 499 if (n == depth) { 500 // We have reached the desired depth; return. 501 return; 502 } 503 n++; // this is a non-skipped frame; count it against the depth 504 } 505 } 506 // NOTE: At this point there were not enough frames on the stack 507 // to walk to depth. Callers of this method have to check for at_end. 508 } 509 510 511 void vframeStreamCommon::security_next() { 512 if (method()->is_prefixed_native()) { 513 skip_prefixed_method_and_wrappers(); // calls next() 514 } else { 515 next(); 516 } 517 } 518 519 520 void vframeStreamCommon::skip_prefixed_method_and_wrappers() { 521 ResourceMark rm; 522 HandleMark hm; 523 524 int method_prefix_count = 0; 525 char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count); 526 KlassHandle prefixed_klass(method()->method_holder()); 527 const char* prefixed_name = method()->name()->as_C_string(); 528 size_t prefixed_name_len = strlen(prefixed_name); 529 int prefix_index = method_prefix_count-1; 530 531 while (!at_end()) { 532 next(); 533 if (method()->method_holder() != prefixed_klass()) { 534 break; // classes don't match, can't be a wrapper 535 } 536 const char* name = method()->name()->as_C_string(); 537 size_t name_len = strlen(name); 538 size_t prefix_len = prefixed_name_len - name_len; 539 if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) { 540 break; // prefixed name isn't prefixed version of method name, can't be a wrapper 541 } 542 for (; prefix_index >= 0; --prefix_index) { 543 const char* possible_prefix = method_prefixes[prefix_index]; 544 size_t possible_prefix_len = strlen(possible_prefix); 545 if (possible_prefix_len == prefix_len && 546 strncmp(possible_prefix, prefixed_name, prefix_len) == 0) { 547 break; // matching prefix found 548 } 549 } 550 if (prefix_index < 0) { 551 break; // didn't find the prefix, can't be a wrapper 552 } 553 prefixed_name = name; 554 prefixed_name_len = name_len; 555 } 556 } 557 558 559 void vframeStreamCommon::skip_reflection_related_frames() { 560 while (!at_end() && 561 (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) || 562 method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass()))) { 563 next(); 564 } 565 } 566 567 568 #ifndef PRODUCT 569 void vframe::print() { 570 if (WizardMode) _fr.print_value_on(tty,NULL); 571 } 572 573 574 void vframe::print_value() const { 575 ((vframe*)this)->print(); 576 } 577 578 579 void entryVFrame::print_value() const { 580 ((entryVFrame*)this)->print(); 581 } 582 583 void entryVFrame::print() { 584 vframe::print(); 585 tty->print_cr("C Chunk inbetween Java"); 586 tty->print_cr("C link " INTPTR_FORMAT, _fr.link()); 587 } 588 589 590 // ------------- javaVFrame -------------- 591 592 static void print_stack_values(const char* title, StackValueCollection* values) { 593 if (values->is_empty()) return; 594 tty->print_cr("\t%s:", title); 595 values->print(); 596 } 597 598 599 void javaVFrame::print() { 600 ResourceMark rm; 601 vframe::print(); 602 tty->print("\t"); 603 method()->print_value(); 604 tty->cr(); 605 tty->print_cr("\tbci: %d", bci()); 606 607 print_stack_values("locals", locals()); 608 print_stack_values("expressions", expressions()); 609 610 GrowableArray<MonitorInfo*>* list = monitors(); 611 if (list->is_empty()) return; 612 tty->print_cr("\tmonitor list:"); 613 for (int index = (list->length()-1); index >= 0; index--) { 614 MonitorInfo* monitor = list->at(index); 615 tty->print("\t obj\t"); 616 if (monitor->owner_is_scalar_replaced()) { 617 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass()); 618 tty->print("( is scalar replaced %s)", k->external_name()); 619 } else if (monitor->owner() == NULL) { 620 tty->print("( null )"); 621 } else { 622 monitor->owner()->print_value(); 623 tty->print("(owner=" INTPTR_FORMAT ")", (address)monitor->owner()); 624 } 625 if (monitor->eliminated()) { 626 if(is_compiled_frame()) { 627 tty->print(" ( lock is eliminated in compiled frame )"); 628 } else { 629 tty->print(" ( lock is eliminated, frame not compiled )"); 630 } 631 } 632 tty->cr(); 633 tty->print("\t "); 634 monitor->lock()->print_on(tty); 635 tty->cr(); 636 } 637 } 638 639 640 void javaVFrame::print_value() const { 641 Method* m = method(); 642 InstanceKlass* k = m->method_holder(); 643 tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")", 644 _fr.sp(), _fr.unextended_sp(), _fr.fp(), _fr.pc()); 645 tty->print("%s.%s", k->internal_name(), m->name()->as_C_string()); 646 647 if (!m->is_native()) { 648 Symbol* source_name = k->source_file_name(); 649 int line_number = m->line_number_from_bci(bci()); 650 if (source_name != NULL && (line_number != -1)) { 651 tty->print("(%s:%d)", source_name->as_C_string(), line_number); 652 } 653 } else { 654 tty->print("(Native Method)"); 655 } 656 // Check frame size and print warning if it looks suspiciously large 657 if (fr().sp() != NULL) { 658 RegisterMap map = *register_map(); 659 uint size = fr().frame_size(&map); 660 #ifdef _LP64 661 if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); 662 #else 663 if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); 664 #endif 665 } 666 } 667 668 669 bool javaVFrame::structural_compare(javaVFrame* other) { 670 // Check static part 671 if (method() != other->method()) return false; 672 if (bci() != other->bci()) return false; 673 674 // Check locals 675 StackValueCollection *locs = locals(); 676 StackValueCollection *other_locs = other->locals(); 677 assert(locs->size() == other_locs->size(), "sanity check"); 678 int i; 679 for(i = 0; i < locs->size(); i++) { 680 // it might happen the compiler reports a conflict and 681 // the interpreter reports a bogus int. 682 if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue; 683 if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue; 684 685 if (!locs->at(i)->equal(other_locs->at(i))) 686 return false; 687 } 688 689 // Check expressions 690 StackValueCollection* exprs = expressions(); 691 StackValueCollection* other_exprs = other->expressions(); 692 assert(exprs->size() == other_exprs->size(), "sanity check"); 693 for(i = 0; i < exprs->size(); i++) { 694 if (!exprs->at(i)->equal(other_exprs->at(i))) 695 return false; 696 } 697 698 return true; 699 } 700 701 702 void javaVFrame::print_activation(int index) const { 703 // frame number and method 704 tty->print("%2d - ", index); 705 ((vframe*)this)->print_value(); 706 tty->cr(); 707 708 if (WizardMode) { 709 ((vframe*)this)->print(); 710 tty->cr(); 711 } 712 } 713 714 715 void javaVFrame::verify() const { 716 } 717 718 719 void interpretedVFrame::verify() const { 720 } 721 722 723 // ------------- externalVFrame -------------- 724 725 void externalVFrame::print() { 726 _fr.print_value_on(tty,NULL); 727 } 728 729 730 void externalVFrame::print_value() const { 731 ((vframe*)this)->print(); 732 } 733 #endif // PRODUCT