vframe.cpp revision 11079:69d081845165
1/* 2 * Copyright (c) 1997, 2016, 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 49vframe::vframe(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) 50: _reg_map(reg_map), _thread(thread) { 51 assert(fr != NULL, "must have frame"); 52 _fr = *fr; 53} 54 55vframe::vframe(const frame* fr, JavaThread* thread) 56: _reg_map(thread), _thread(thread) { 57 assert(fr != NULL, "must have frame"); 58 _fr = *fr; 59} 60 61vframe* vframe::new_vframe(const frame* f, const RegisterMap* reg_map, JavaThread* thread) { 62 // Interpreter frame 63 if (f->is_interpreted_frame()) { 64 return new interpretedVFrame(f, reg_map, thread); 65 } 66 67 // Compiled frame 68 CodeBlob* cb = f->cb(); 69 if (cb != NULL) { 70 if (cb->is_compiled()) { 71 CompiledMethod* nm = (CompiledMethod*)cb; 72 return new compiledVFrame(f, reg_map, thread, nm); 73 } 74 75 if (f->is_runtime_frame()) { 76 // Skip this frame and try again. 77 RegisterMap temp_map = *reg_map; 78 frame s = f->sender(&temp_map); 79 return new_vframe(&s, &temp_map, thread); 80 } 81 } 82 83 // External frame 84 return new externalVFrame(f, reg_map, thread); 85} 86 87vframe* vframe::sender() const { 88 RegisterMap temp_map = *register_map(); 89 assert(is_top(), "just checking"); 90 if (_fr.is_entry_frame() && _fr.is_first_frame()) return NULL; 91 frame s = _fr.real_sender(&temp_map); 92 if (s.is_first_frame()) return NULL; 93 return vframe::new_vframe(&s, &temp_map, thread()); 94} 95 96vframe* vframe::top() const { 97 vframe* vf = (vframe*) this; 98 while (!vf->is_top()) vf = vf->sender(); 99 return vf; 100} 101 102 103javaVFrame* vframe::java_sender() const { 104 vframe* f = sender(); 105 while (f != NULL) { 106 if (f->is_java_frame()) return javaVFrame::cast(f); 107 f = f->sender(); 108 } 109 return NULL; 110} 111 112// ------------- javaVFrame -------------- 113 114GrowableArray<MonitorInfo*>* javaVFrame::locked_monitors() { 115 assert(SafepointSynchronize::is_at_safepoint() || JavaThread::current() == thread(), 116 "must be at safepoint or it's a java frame of the current thread"); 117 118 GrowableArray<MonitorInfo*>* mons = monitors(); 119 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(mons->length()); 120 if (mons->is_empty()) return result; 121 122 bool found_first_monitor = false; 123 ObjectMonitor *pending_monitor = thread()->current_pending_monitor(); 124 ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor(); 125 oop pending_obj = (pending_monitor != NULL ? (oop) pending_monitor->object() : (oop) NULL); 126 oop waiting_obj = (waiting_monitor != NULL ? (oop) waiting_monitor->object() : (oop) NULL); 127 128 for (int index = (mons->length()-1); index >= 0; index--) { 129 MonitorInfo* monitor = mons->at(index); 130 if (monitor->eliminated() && is_compiled_frame()) continue; // skip eliminated monitor 131 oop obj = monitor->owner(); 132 if (obj == NULL) continue; // skip unowned monitor 133 // 134 // Skip the monitor that the thread is blocked to enter or waiting on 135 // 136 if (!found_first_monitor && (obj == pending_obj || obj == waiting_obj)) { 137 continue; 138 } 139 found_first_monitor = true; 140 result->append(monitor); 141 } 142 return result; 143} 144 145void javaVFrame::print_locked_object_class_name(outputStream* st, Handle obj, const char* lock_state) { 146 if (obj.not_null()) { 147 st->print("\t- %s <" INTPTR_FORMAT "> ", lock_state, p2i(obj())); 148 if (obj->klass() == SystemDictionary::Class_klass()) { 149 st->print_cr("(a java.lang.Class for %s)", java_lang_Class::as_external_name(obj())); 150 } else { 151 Klass* k = obj->klass(); 152 st->print_cr("(a %s)", k->external_name()); 153 } 154 } 155} 156 157void javaVFrame::print_lock_info_on(outputStream* st, int frame_count) { 158 ResourceMark rm; 159 160 // If this is the first frame and it is java.lang.Object.wait(...) 161 // then print out the receiver. Locals are not always available, 162 // e.g., compiled native frames have no scope so there are no locals. 163 if (frame_count == 0) { 164 if (method()->name() == vmSymbols::wait_name() && 165 method()->method_holder()->name() == vmSymbols::java_lang_Object()) { 166 const char *wait_state = "waiting on"; // assume we are waiting 167 // If earlier in the output we reported java.lang.Thread.State == 168 // "WAITING (on object monitor)" and now we report "waiting on", then 169 // we are still waiting for notification or timeout. Otherwise if 170 // we earlier reported java.lang.Thread.State == "BLOCKED (on object 171 // monitor)", then we are actually waiting to re-lock the monitor. 172 // At this level we can't distinguish the two cases to report 173 // "waited on" rather than "waiting on" for the second case. 174 StackValueCollection* locs = locals(); 175 if (!locs->is_empty()) { 176 StackValue* sv = locs->at(0); 177 if (sv->type() == T_OBJECT) { 178 Handle o = locs->at(0)->get_obj(); 179 print_locked_object_class_name(st, o, wait_state); 180 } 181 } else { 182 st->print_cr("\t- %s <no object reference available>", wait_state); 183 } 184 } else if (thread()->current_park_blocker() != NULL) { 185 oop obj = thread()->current_park_blocker(); 186 Klass* k = obj->klass(); 187 st->print_cr("\t- %s <" INTPTR_FORMAT "> (a %s)", "parking to wait for ", p2i(obj), k->external_name()); 188 } 189 } 190 191 // Print out all monitors that we have locked, or are trying to lock, 192 // including re-locking after being notified or timing out in a wait(). 193 GrowableArray<MonitorInfo*>* mons = monitors(); 194 if (!mons->is_empty()) { 195 bool found_first_monitor = false; 196 for (int index = (mons->length()-1); index >= 0; index--) { 197 MonitorInfo* monitor = mons->at(index); 198 if (monitor->eliminated() && is_compiled_frame()) { // Eliminated in compiled code 199 if (monitor->owner_is_scalar_replaced()) { 200 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass()); 201 // format below for lockbits matches this one. 202 st->print("\t- eliminated <owner is scalar replaced> (a %s)", k->external_name()); 203 } else { 204 oop obj = monitor->owner(); 205 if (obj != NULL) { 206 print_locked_object_class_name(st, obj, "eliminated"); 207 } 208 } 209 continue; 210 } 211 if (monitor->owner() != NULL) { 212 // the monitor is associated with an object, i.e., it is locked 213 214 markOop mark = NULL; 215 const char *lock_state = "locked"; // assume we have the monitor locked 216 if (!found_first_monitor && frame_count == 0) { 217 // If this is the first frame and we haven't found an owned 218 // monitor before, then we need to see if we have completed 219 // the lock or if we are blocked trying to acquire it. Only 220 // an inflated monitor that is first on the monitor list in 221 // the first frame can block us on a monitor enter. 222 mark = monitor->owner()->mark(); 223 if (mark->has_monitor() && 224 ( // we have marked ourself as pending on this monitor 225 mark->monitor() == thread()->current_pending_monitor() || 226 // we are not the owner of this monitor 227 !mark->monitor()->is_entered(thread()) 228 )) { 229 lock_state = "waiting to lock"; 230 } else { 231 // We own the monitor which is not as interesting so 232 // disable the extra printing below. 233 mark = NULL; 234 } 235 } else if (frame_count != 0) { 236 // This is not the first frame so we either own this monitor 237 // or we owned the monitor before and called wait(). Because 238 // wait() could have been called on any monitor in a lower 239 // numbered frame on the stack, we have to check all the 240 // monitors on the list for this frame. 241 mark = monitor->owner()->mark(); 242 if (mark->has_monitor() && 243 ( // we have marked ourself as pending on this monitor 244 mark->monitor() == thread()->current_pending_monitor() || 245 // we are not the owner of this monitor 246 !mark->monitor()->is_entered(thread()) 247 )) { 248 lock_state = "waiting to re-lock in wait()"; 249 } else { 250 // We own the monitor which is not as interesting so 251 // disable the extra printing below. 252 mark = NULL; 253 } 254 } 255 print_locked_object_class_name(st, monitor->owner(), lock_state); 256 if (ObjectMonitor::Knob_Verbose && mark != NULL) { 257 st->print("\t- lockbits="); 258 mark->print_on(st); 259 st->cr(); 260 } 261 262 found_first_monitor = true; 263 } 264 } 265 } 266} 267 268// ------------- interpretedVFrame -------------- 269 270u_char* interpretedVFrame::bcp() const { 271 return fr().interpreter_frame_bcp(); 272} 273 274void interpretedVFrame::set_bcp(u_char* bcp) { 275 fr().interpreter_frame_set_bcp(bcp); 276} 277 278intptr_t* interpretedVFrame::locals_addr_at(int offset) const { 279 assert(fr().is_interpreted_frame(), "frame should be an interpreted frame"); 280 return fr().interpreter_frame_local_at(offset); 281} 282 283 284GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const { 285 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5); 286 for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin())); 287 current >= fr().interpreter_frame_monitor_end(); 288 current = fr().previous_monitor_in_interpreter_frame(current)) { 289 result->push(new MonitorInfo(current->obj(), current->lock(), false, false)); 290 } 291 return result; 292} 293 294int interpretedVFrame::bci() const { 295 return method()->bci_from(bcp()); 296} 297 298Method* interpretedVFrame::method() const { 299 return fr().interpreter_frame_method(); 300} 301 302static StackValue* create_stack_value_from_oop_map(const InterpreterOopMap& oop_mask, 303 int index, 304 const intptr_t* const addr) { 305 306 assert(index >= 0 && 307 index < oop_mask.number_of_entries(), "invariant"); 308 309 // categorize using oop_mask 310 if (oop_mask.is_oop(index)) { 311 // reference (oop) "r" 312 Handle h(addr != NULL ? (*(oop*)addr) : (oop)NULL); 313 return new StackValue(h); 314 } 315 // value (integer) "v" 316 return new StackValue(addr != NULL ? *addr : 0); 317} 318 319static bool is_in_expression_stack(const frame& fr, const intptr_t* const addr) { 320 assert(addr != NULL, "invariant"); 321 322 // Ensure to be 'inside' the expresion stack (i.e., addr >= sp for Intel). 323 // In case of exceptions, the expression stack is invalid and the sp 324 // will be reset to express this condition. 325 if (frame::interpreter_frame_expression_stack_direction() > 0) { 326 return addr <= fr.interpreter_frame_tos_address(); 327 } 328 329 return addr >= fr.interpreter_frame_tos_address(); 330} 331 332static void stack_locals(StackValueCollection* result, 333 int length, 334 const InterpreterOopMap& oop_mask, 335 const frame& fr) { 336 337 assert(result != NULL, "invariant"); 338 339 for (int i = 0; i < length; ++i) { 340 const intptr_t* const addr = fr.interpreter_frame_local_at(i); 341 assert(addr != NULL, "invariant"); 342 assert(addr >= fr.sp(), "must be inside the frame"); 343 344 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, i, addr); 345 assert(sv != NULL, "sanity check"); 346 347 result->add(sv); 348 } 349} 350 351static void stack_expressions(StackValueCollection* result, 352 int length, 353 int max_locals, 354 const InterpreterOopMap& oop_mask, 355 const frame& fr) { 356 357 assert(result != NULL, "invariant"); 358 359 for (int i = 0; i < length; ++i) { 360 const intptr_t* addr = fr.interpreter_frame_expression_stack_at(i); 361 assert(addr != NULL, "invariant"); 362 if (!is_in_expression_stack(fr, addr)) { 363 // Need to ensure no bogus escapes. 364 addr = NULL; 365 } 366 367 StackValue* const sv = create_stack_value_from_oop_map(oop_mask, 368 i + max_locals, 369 addr); 370 assert(sv != NULL, "sanity check"); 371 372 result->add(sv); 373 } 374} 375 376StackValueCollection* interpretedVFrame::locals() const { 377 return stack_data(false); 378} 379 380StackValueCollection* interpretedVFrame::expressions() const { 381 return stack_data(true); 382} 383 384/* 385 * Worker routine for fetching references and/or values 386 * for a particular bci in the interpretedVFrame. 387 * 388 * Returns data for either "locals" or "expressions", 389 * using bci relative oop_map (oop_mask) information. 390 * 391 * @param expressions bool switch controlling what data to return 392 (false == locals / true == expression) 393 * 394 */ 395StackValueCollection* interpretedVFrame::stack_data(bool expressions) const { 396 397 InterpreterOopMap oop_mask; 398 // oopmap for current bci 399 if ((TraceDeoptimization && Verbose) JVMCI_ONLY( || PrintDeoptimizationDetails)) { 400 methodHandle m_h(Thread::current(), method()); 401 OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask); 402 } else { 403 method()->mask_for(bci(), &oop_mask); 404 } 405 406 const int mask_len = oop_mask.number_of_entries(); 407 408 // If the method is native, method()->max_locals() is not telling the truth. 409 // For our purposes, max locals instead equals the size of parameters. 410 const int max_locals = method()->is_native() ? 411 method()->size_of_parameters() : method()->max_locals(); 412 413 assert(mask_len >= max_locals, "invariant"); 414 415 const int length = expressions ? mask_len - max_locals : max_locals; 416 assert(length >= 0, "invariant"); 417 418 StackValueCollection* const result = new StackValueCollection(length); 419 420 if (0 == length) { 421 return result; 422 } 423 424 if (expressions) { 425 stack_expressions(result, length, max_locals, oop_mask, fr()); 426 } else { 427 stack_locals(result, length, oop_mask, fr()); 428 } 429 430 assert(length == result->size(), "invariant"); 431 432 return result; 433} 434 435void interpretedVFrame::set_locals(StackValueCollection* values) const { 436 if (values == NULL || values->size() == 0) return; 437 438 // If the method is native, max_locals is not telling the truth. 439 // maxlocals then equals the size of parameters 440 const int max_locals = method()->is_native() ? 441 method()->size_of_parameters() : method()->max_locals(); 442 443 assert(max_locals == values->size(), "Mismatch between actual stack format and supplied data"); 444 445 // handle locals 446 for (int i = 0; i < max_locals; i++) { 447 // Find stack location 448 intptr_t *addr = locals_addr_at(i); 449 450 // Depending on oop/int put it in the right package 451 const StackValue* const sv = values->at(i); 452 assert(sv != NULL, "sanity check"); 453 if (sv->type() == T_OBJECT) { 454 *(oop *) addr = (sv->get_obj())(); 455 } else { // integer 456 *addr = sv->get_int(); 457 } 458 } 459} 460 461// ------------- cChunk -------------- 462 463entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) 464: externalVFrame(fr, reg_map, thread) {} 465 466 467void vframeStreamCommon::found_bad_method_frame() { 468 // 6379830 Cut point for an assertion that occasionally fires when 469 // we are using the performance analyzer. 470 // Disable this assert when testing the analyzer with fastdebug. 471 // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number) 472 assert(false, "invalid bci or invalid scope desc"); 473} 474 475// top-frame will be skipped 476vframeStream::vframeStream(JavaThread* thread, frame top_frame, 477 bool stop_at_java_call_stub) : vframeStreamCommon(thread) { 478 _stop_at_java_call_stub = stop_at_java_call_stub; 479 480 // skip top frame, as it may not be at safepoint 481 _frame = top_frame.sender(&_reg_map); 482 while (!fill_from_frame()) { 483 _frame = _frame.sender(&_reg_map); 484 } 485} 486 487 488// Step back n frames, skip any pseudo frames in between. 489// This function is used in Class.forName, Class.newInstance, Method.Invoke, 490// AccessController.doPrivileged. 491void vframeStreamCommon::security_get_caller_frame(int depth) { 492 assert(depth >= 0, "invalid depth: %d", depth); 493 for (int n = 0; !at_end(); security_next()) { 494 if (!method()->is_ignored_by_security_stack_walk()) { 495 if (n == depth) { 496 // We have reached the desired depth; return. 497 return; 498 } 499 n++; // this is a non-skipped frame; count it against the depth 500 } 501 } 502 // NOTE: At this point there were not enough frames on the stack 503 // to walk to depth. Callers of this method have to check for at_end. 504} 505 506 507void vframeStreamCommon::security_next() { 508 if (method()->is_prefixed_native()) { 509 skip_prefixed_method_and_wrappers(); // calls next() 510 } else { 511 next(); 512 } 513} 514 515 516void vframeStreamCommon::skip_prefixed_method_and_wrappers() { 517 ResourceMark rm; 518 HandleMark hm; 519 520 int method_prefix_count = 0; 521 char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count); 522 KlassHandle prefixed_klass(method()->method_holder()); 523 const char* prefixed_name = method()->name()->as_C_string(); 524 size_t prefixed_name_len = strlen(prefixed_name); 525 int prefix_index = method_prefix_count-1; 526 527 while (!at_end()) { 528 next(); 529 if (method()->method_holder() != prefixed_klass()) { 530 break; // classes don't match, can't be a wrapper 531 } 532 const char* name = method()->name()->as_C_string(); 533 size_t name_len = strlen(name); 534 size_t prefix_len = prefixed_name_len - name_len; 535 if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) { 536 break; // prefixed name isn't prefixed version of method name, can't be a wrapper 537 } 538 for (; prefix_index >= 0; --prefix_index) { 539 const char* possible_prefix = method_prefixes[prefix_index]; 540 size_t possible_prefix_len = strlen(possible_prefix); 541 if (possible_prefix_len == prefix_len && 542 strncmp(possible_prefix, prefixed_name, prefix_len) == 0) { 543 break; // matching prefix found 544 } 545 } 546 if (prefix_index < 0) { 547 break; // didn't find the prefix, can't be a wrapper 548 } 549 prefixed_name = name; 550 prefixed_name_len = name_len; 551 } 552} 553 554 555void vframeStreamCommon::skip_reflection_related_frames() { 556 while (!at_end() && 557 (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) || 558 method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass()))) { 559 next(); 560 } 561} 562 563 564#ifndef PRODUCT 565void vframe::print() { 566 if (WizardMode) _fr.print_value_on(tty,NULL); 567} 568 569 570void vframe::print_value() const { 571 ((vframe*)this)->print(); 572} 573 574 575void entryVFrame::print_value() const { 576 ((entryVFrame*)this)->print(); 577} 578 579void entryVFrame::print() { 580 vframe::print(); 581 tty->print_cr("C Chunk inbetween Java"); 582 tty->print_cr("C link " INTPTR_FORMAT, p2i(_fr.link())); 583} 584 585 586// ------------- javaVFrame -------------- 587 588static void print_stack_values(const char* title, StackValueCollection* values) { 589 if (values->is_empty()) return; 590 tty->print_cr("\t%s:", title); 591 values->print(); 592} 593 594 595void javaVFrame::print() { 596 ResourceMark rm; 597 vframe::print(); 598 tty->print("\t"); 599 method()->print_value(); 600 tty->cr(); 601 tty->print_cr("\tbci: %d", bci()); 602 603 print_stack_values("locals", locals()); 604 print_stack_values("expressions", expressions()); 605 606 GrowableArray<MonitorInfo*>* list = monitors(); 607 if (list->is_empty()) return; 608 tty->print_cr("\tmonitor list:"); 609 for (int index = (list->length()-1); index >= 0; index--) { 610 MonitorInfo* monitor = list->at(index); 611 tty->print("\t obj\t"); 612 if (monitor->owner_is_scalar_replaced()) { 613 Klass* k = java_lang_Class::as_Klass(monitor->owner_klass()); 614 tty->print("( is scalar replaced %s)", k->external_name()); 615 } else if (monitor->owner() == NULL) { 616 tty->print("( null )"); 617 } else { 618 monitor->owner()->print_value(); 619 tty->print("(owner=" INTPTR_FORMAT ")", p2i(monitor->owner())); 620 } 621 if (monitor->eliminated()) { 622 if(is_compiled_frame()) { 623 tty->print(" ( lock is eliminated in compiled frame )"); 624 } else { 625 tty->print(" ( lock is eliminated, frame not compiled )"); 626 } 627 } 628 tty->cr(); 629 tty->print("\t "); 630 monitor->lock()->print_on(tty); 631 tty->cr(); 632 } 633} 634 635 636void javaVFrame::print_value() const { 637 Method* m = method(); 638 InstanceKlass* k = m->method_holder(); 639 tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")", 640 p2i(_fr.sp()), p2i(_fr.unextended_sp()), p2i(_fr.fp()), p2i(_fr.pc())); 641 tty->print("%s.%s", k->internal_name(), m->name()->as_C_string()); 642 643 if (!m->is_native()) { 644 Symbol* source_name = k->source_file_name(); 645 int line_number = m->line_number_from_bci(bci()); 646 if (source_name != NULL && (line_number != -1)) { 647 tty->print("(%s:%d)", source_name->as_C_string(), line_number); 648 } 649 } else { 650 tty->print("(Native Method)"); 651 } 652 // Check frame size and print warning if it looks suspiciously large 653 if (fr().sp() != NULL) { 654 RegisterMap map = *register_map(); 655 uint size = fr().frame_size(&map); 656#ifdef _LP64 657 if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); 658#else 659 if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); 660#endif 661 } 662} 663 664 665bool javaVFrame::structural_compare(javaVFrame* other) { 666 // Check static part 667 if (method() != other->method()) return false; 668 if (bci() != other->bci()) return false; 669 670 // Check locals 671 StackValueCollection *locs = locals(); 672 StackValueCollection *other_locs = other->locals(); 673 assert(locs->size() == other_locs->size(), "sanity check"); 674 int i; 675 for(i = 0; i < locs->size(); i++) { 676 // it might happen the compiler reports a conflict and 677 // the interpreter reports a bogus int. 678 if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue; 679 if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue; 680 681 if (!locs->at(i)->equal(other_locs->at(i))) 682 return false; 683 } 684 685 // Check expressions 686 StackValueCollection* exprs = expressions(); 687 StackValueCollection* other_exprs = other->expressions(); 688 assert(exprs->size() == other_exprs->size(), "sanity check"); 689 for(i = 0; i < exprs->size(); i++) { 690 if (!exprs->at(i)->equal(other_exprs->at(i))) 691 return false; 692 } 693 694 return true; 695} 696 697 698void javaVFrame::print_activation(int index) const { 699 // frame number and method 700 tty->print("%2d - ", index); 701 ((vframe*)this)->print_value(); 702 tty->cr(); 703 704 if (WizardMode) { 705 ((vframe*)this)->print(); 706 tty->cr(); 707 } 708} 709 710 711void javaVFrame::verify() const { 712} 713 714 715void interpretedVFrame::verify() const { 716} 717 718 719// ------------- externalVFrame -------------- 720 721void externalVFrame::print() { 722 _fr.print_value_on(tty,NULL); 723} 724 725 726void externalVFrame::print_value() const { 727 ((vframe*)this)->print(); 728} 729#endif // PRODUCT 730