vmError.cpp revision 1827:1e9a9d2e6509
1/* 2 * Copyright (c) 2003, 2010, 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 "incls/_precompiled.incl" 26# include "incls/_vmError.cpp.incl" 27 28// List of environment variables that should be reported in error log file. 29const char *env_list[] = { 30 // All platforms 31 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 32 "JAVA_COMPILER", "PATH", "USERNAME", 33 34 // Env variables that are defined on Solaris/Linux 35 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 36 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 37 38 // defined on Linux 39 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 40 41 // defined on Windows 42 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 43 44 (const char *)0 45}; 46 47// Fatal error handler for internal errors and crashes. 48// 49// The default behavior of fatal error handler is to print a brief message 50// to standard out (defaultStream::output_fd()), then save detailed information 51// into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple 52// threads are having troubles at the same time, only one error is reported. 53// The thread that is reporting error will abort VM when it is done, all other 54// threads are blocked forever inside report_and_die(). 55 56// Constructor for crashes 57VMError::VMError(Thread* thread, int sig, address pc, void* siginfo, void* context) { 58 _thread = thread; 59 _id = sig; 60 _pc = pc; 61 _siginfo = siginfo; 62 _context = context; 63 64 _verbose = false; 65 _current_step = 0; 66 _current_step_info = NULL; 67 68 _message = NULL; 69 _detail_msg = NULL; 70 _filename = NULL; 71 _lineno = 0; 72 73 _size = 0; 74} 75 76// Constructor for internal errors 77VMError::VMError(Thread* thread, const char* filename, int lineno, 78 const char* message, const char * detail_msg) 79{ 80 _thread = thread; 81 _id = internal_error; // Value that's not an OS exception/signal 82 _filename = filename; 83 _lineno = lineno; 84 _message = message; 85 _detail_msg = detail_msg; 86 87 _verbose = false; 88 _current_step = 0; 89 _current_step_info = NULL; 90 91 _pc = NULL; 92 _siginfo = NULL; 93 _context = NULL; 94 95 _size = 0; 96} 97 98// Constructor for OOM errors 99VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size, 100 const char* message) { 101 _thread = thread; 102 _id = oom_error; // Value that's not an OS exception/signal 103 _filename = filename; 104 _lineno = lineno; 105 _message = message; 106 _detail_msg = NULL; 107 108 _verbose = false; 109 _current_step = 0; 110 _current_step_info = NULL; 111 112 _pc = NULL; 113 _siginfo = NULL; 114 _context = NULL; 115 116 _size = size; 117} 118 119 120// Constructor for non-fatal errors 121VMError::VMError(const char* message) { 122 _thread = NULL; 123 _id = internal_error; // Value that's not an OS exception/signal 124 _filename = NULL; 125 _lineno = 0; 126 _message = message; 127 _detail_msg = NULL; 128 129 _verbose = false; 130 _current_step = 0; 131 _current_step_info = NULL; 132 133 _pc = NULL; 134 _siginfo = NULL; 135 _context = NULL; 136 137 _size = 0; 138} 139 140// -XX:OnError=<string>, where <string> can be a list of commands, separated 141// by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by 142// a single "%". Some examples: 143// 144// -XX:OnError="pmap %p" // show memory map 145// -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger 146// -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com" 147// -XX:OnError="kill -9 %p" // ?#!@# 148 149// A simple parser for -XX:OnError, usage: 150// ptr = OnError; 151// while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 152// ... ... 153static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 154 if (ptr == NULL || *ptr == NULL) return NULL; 155 156 const char* cmd = *ptr; 157 158 // skip leading blanks or ';' 159 while (*cmd == ' ' || *cmd == ';') cmd++; 160 161 if (*cmd == '\0') return NULL; 162 163 const char * cmdend = cmd; 164 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 165 166 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 167 168 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 169 return buf; 170} 171 172 173static void print_bug_submit_message(outputStream *out, Thread *thread) { 174 if (out == NULL) return; 175 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 176 out->print_raw ("# "); 177 out->print_raw_cr(Arguments::java_vendor_url_bug()); 178 // If the crash is in native code, encourage user to submit a bug to the 179 // provider of that code. 180 if (thread && thread->is_Java_thread() && 181 !thread->is_hidden_from_external_view()) { 182 JavaThread* jt = (JavaThread*)thread; 183 if (jt->thread_state() == _thread_in_native) { 184 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 185 } 186 } 187 out->print_raw_cr("#"); 188} 189 190 191// Return a string to describe the error 192char* VMError::error_string(char* buf, int buflen) { 193 char signame_buf[64]; 194 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 195 196 if (signame) { 197 jio_snprintf(buf, buflen, 198 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 199 signame, _id, _pc, 200 os::current_process_id(), os::current_thread_id()); 201 } else if (_filename != NULL && _lineno > 0) { 202 // skip directory names 203 char separator = os::file_separator()[0]; 204 const char *p = strrchr(_filename, separator); 205 int n = jio_snprintf(buf, buflen, 206 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 207 p ? p + 1 : _filename, _lineno, 208 os::current_process_id(), os::current_thread_id()); 209 if (n >= 0 && n < buflen && _message) { 210 if (_detail_msg) { 211 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 212 os::line_separator(), _message, _detail_msg); 213 } else { 214 jio_snprintf(buf + n, buflen - n, "%sError: %s", 215 os::line_separator(), _message); 216 } 217 } 218 } else { 219 jio_snprintf(buf, buflen, 220 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 221 _id, os::current_process_id(), os::current_thread_id()); 222 } 223 224 return buf; 225} 226 227void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 228 char* buf, int buflen, bool verbose) { 229#ifdef ZERO 230 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 231 // StackFrameStream uses the frame anchor, which may not have 232 // been set up. This can be done at any time in Zero, however, 233 // so if it hasn't been set up then we just set it up now and 234 // clear it again when we're done. 235 bool has_last_Java_frame = jt->has_last_Java_frame(); 236 if (!has_last_Java_frame) 237 jt->set_last_Java_frame(); 238 st->print("Java frames:"); 239 240 // If the top frame is a Shark frame and the frame anchor isn't 241 // set up then it's possible that the information in the frame 242 // is garbage: it could be from a previous decache, or it could 243 // simply have never been written. So we print a warning... 244 StackFrameStream sfs(jt); 245 if (!has_last_Java_frame && !sfs.is_done()) { 246 if (sfs.current()->zeroframe()->is_shark_frame()) { 247 st->print(" (TOP FRAME MAY BE JUNK)"); 248 } 249 } 250 st->cr(); 251 252 // Print the frames 253 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 254 sfs.current()->zero_print_on_error(i, st, buf, buflen); 255 st->cr(); 256 } 257 258 // Reset the frame anchor if necessary 259 if (!has_last_Java_frame) 260 jt->reset_last_Java_frame(); 261 } 262#else 263 if (jt->has_last_Java_frame()) { 264 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 265 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 266 sfs.current()->print_on_error(st, buf, buflen, verbose); 267 st->cr(); 268 } 269 } 270#endif // ZERO 271} 272 273// This is the main function to report a fatal error. Only one thread can 274// call this function, so we don't need to worry about MT-safety. But it's 275// possible that the error handler itself may crash or die on an internal 276// error, for example, when the stack/heap is badly damaged. We must be 277// able to handle recursive errors that happen inside error handler. 278// 279// Error reporting is done in several steps. If a crash or internal error 280// occurred when reporting an error, the nested signal/exception handler 281// can skip steps that are already (or partially) done. Error reporting will 282// continue from the next step. This allows us to retrieve and print 283// information that may be unsafe to get after a fatal error. If it happens, 284// you may find nested report_and_die() frames when you look at the stack 285// in a debugger. 286// 287// In general, a hang in error handler is much worse than a crash or internal 288// error, as it's harder to recover from a hang. Deadlock can happen if we 289// try to grab a lock that is already owned by current thread, or if the 290// owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 291// error handler and all the functions it called should avoid grabbing any 292// lock. An important thing to notice is that memory allocation needs a lock. 293// 294// We should avoid using large stack allocated buffers. Many errors happen 295// when stack space is already low. Making things even worse is that there 296// could be nested report_and_die() calls on stack (see above). Only one 297// thread can report error, so large buffers are statically allocated in data 298// segment. 299 300void VMError::report(outputStream* st) { 301# define BEGIN if (_current_step == 0) { _current_step = 1; 302# define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 303# define END } 304 305 // don't allocate large buffer on stack 306 static char buf[O_BUFLEN]; 307 308 BEGIN 309 310 STEP(10, "(printing fatal error message)") 311 312 st->print_cr("#"); 313 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 314 315 STEP(15, "(printing type of error)") 316 317 switch(_id) { 318 case oom_error: 319 st->print_cr("#"); 320 st->print("# java.lang.OutOfMemoryError: "); 321 if (_size) { 322 st->print("requested "); 323 sprintf(buf,SIZE_FORMAT,_size); 324 st->print(buf); 325 st->print(" bytes"); 326 if (_message != NULL) { 327 st->print(" for "); 328 st->print(_message); 329 } 330 st->print_cr(". Out of swap space?"); 331 } else { 332 if (_message != NULL) 333 st->print_cr(_message); 334 } 335 break; 336 case internal_error: 337 default: 338 break; 339 } 340 341 STEP(20, "(printing exception/signal name)") 342 343 st->print_cr("#"); 344 st->print("# "); 345 // Is it an OS exception/signal? 346 if (os::exception_name(_id, buf, sizeof(buf))) { 347 st->print("%s", buf); 348 st->print(" (0x%x)", _id); // signal number 349 st->print(" at pc=" PTR_FORMAT, _pc); 350 } else { 351 st->print("Internal Error"); 352 if (_filename != NULL && _lineno > 0) { 353#ifdef PRODUCT 354 // In product mode chop off pathname? 355 char separator = os::file_separator()[0]; 356 const char *p = strrchr(_filename, separator); 357 const char *file = p ? p+1 : _filename; 358#else 359 const char *file = _filename; 360#endif 361 size_t len = strlen(file); 362 size_t buflen = sizeof(buf); 363 364 strncpy(buf, file, buflen); 365 if (len + 10 < buflen) { 366 sprintf(buf + len, ":%d", _lineno); 367 } 368 st->print(" (%s)", buf); 369 } else { 370 st->print(" (0x%x)", _id); 371 } 372 } 373 374 STEP(30, "(printing current thread and pid)") 375 376 // process id, thread id 377 st->print(", pid=%d", os::current_process_id()); 378 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 379 st->cr(); 380 381 STEP(40, "(printing error message)") 382 383 // error message 384 if (_detail_msg) { 385 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 386 } else if (_message) { 387 st->print_cr("# Error: %s", _message); 388 } 389 390 STEP(50, "(printing Java version string)") 391 392 // VM version 393 st->print_cr("#"); 394 JDK_Version::current().to_string(buf, sizeof(buf)); 395 st->print_cr("# JRE version: %s", buf); 396 st->print_cr("# Java VM: %s (%s %s %s %s)", 397 Abstract_VM_Version::vm_name(), 398 Abstract_VM_Version::vm_release(), 399 Abstract_VM_Version::vm_info_string(), 400 Abstract_VM_Version::vm_platform_string(), 401 UseCompressedOops ? "compressed oops" : "" 402 ); 403 404 STEP(60, "(printing problematic frame)") 405 406 // Print current frame if we have a context (i.e. it's a crash) 407 if (_context) { 408 st->print_cr("# Problematic frame:"); 409 st->print("# "); 410 frame fr = os::fetch_frame_from_context(_context); 411 fr.print_on_error(st, buf, sizeof(buf)); 412 st->cr(); 413 st->print_cr("#"); 414 } 415 416 STEP(65, "(printing bug submit message)") 417 418 if (_verbose) print_bug_submit_message(st, _thread); 419 420 STEP(70, "(printing thread)" ) 421 422 if (_verbose) { 423 st->cr(); 424 st->print_cr("--------------- T H R E A D ---------------"); 425 st->cr(); 426 } 427 428 STEP(80, "(printing current thread)" ) 429 430 // current thread 431 if (_verbose) { 432 if (_thread) { 433 st->print("Current thread (" PTR_FORMAT "): ", _thread); 434 _thread->print_on_error(st, buf, sizeof(buf)); 435 st->cr(); 436 } else { 437 st->print_cr("Current thread is native thread"); 438 } 439 st->cr(); 440 } 441 442 STEP(90, "(printing siginfo)" ) 443 444 // signal no, signal code, address that caused the fault 445 if (_verbose && _siginfo) { 446 os::print_siginfo(st, _siginfo); 447 st->cr(); 448 } 449 450 STEP(100, "(printing registers, top of stack, instructions near pc)") 451 452 // registers, top of stack, instructions near pc 453 if (_verbose && _context) { 454 os::print_context(st, _context); 455 st->cr(); 456 } 457 458 STEP(105, "(printing register info)") 459 460 // decode register contents if possible 461 if (_verbose && _context && Universe::is_fully_initialized()) { 462 os::print_register_info(st, _context); 463 st->cr(); 464 } 465 466 STEP(110, "(printing stack bounds)" ) 467 468 if (_verbose) { 469 st->print("Stack: "); 470 471 address stack_top; 472 size_t stack_size; 473 474 if (_thread) { 475 stack_top = _thread->stack_base(); 476 stack_size = _thread->stack_size(); 477 } else { 478 stack_top = os::current_stack_base(); 479 stack_size = os::current_stack_size(); 480 } 481 482 address stack_bottom = stack_top - stack_size; 483 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 484 485 frame fr = _context ? os::fetch_frame_from_context(_context) 486 : os::current_frame(); 487 488 if (fr.sp()) { 489 st->print(", sp=" PTR_FORMAT, fr.sp()); 490 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 491 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 492 } 493 494 st->cr(); 495 } 496 497 STEP(120, "(printing native stack)" ) 498 499 if (_verbose) { 500 frame fr = _context ? os::fetch_frame_from_context(_context) 501 : os::current_frame(); 502 503 // see if it's a valid frame 504 if (fr.pc()) { 505 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)"); 506 507 int count = 0; 508 509 while (count++ < StackPrintLimit) { 510 fr.print_on_error(st, buf, sizeof(buf)); 511 st->cr(); 512 if (os::is_first_C_frame(&fr)) break; 513 fr = os::get_sender_for_C_frame(&fr); 514 } 515 516 if (count > StackPrintLimit) { 517 st->print_cr("...<more frames>..."); 518 } 519 520 st->cr(); 521 } 522 } 523 524 STEP(130, "(printing Java stack)" ) 525 526 if (_verbose && _thread && _thread->is_Java_thread()) { 527 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 528 } 529 530 STEP(135, "(printing target Java thread stack)" ) 531 532 // printing Java thread stack trace if it is involved in GC crash 533 if (_verbose && _thread && (_thread->is_Named_thread())) { 534 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 535 if (jt != NULL) { 536 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 537 print_stack_trace(st, jt, buf, sizeof(buf), true); 538 } 539 } 540 541 STEP(140, "(printing VM operation)" ) 542 543 if (_verbose && _thread && _thread->is_VM_thread()) { 544 VMThread* t = (VMThread*)_thread; 545 VM_Operation* op = t->vm_operation(); 546 if (op) { 547 op->print_on_error(st); 548 st->cr(); 549 st->cr(); 550 } 551 } 552 553 STEP(150, "(printing current compile task)" ) 554 555 if (_verbose && _thread && _thread->is_Compiler_thread()) { 556 CompilerThread* t = (CompilerThread*)_thread; 557 if (t->task()) { 558 st->cr(); 559 st->print_cr("Current CompileTask:"); 560 t->task()->print_line_on_error(st, buf, sizeof(buf)); 561 st->cr(); 562 } 563 } 564 565 STEP(160, "(printing process)" ) 566 567 if (_verbose) { 568 st->cr(); 569 st->print_cr("--------------- P R O C E S S ---------------"); 570 st->cr(); 571 } 572 573 STEP(170, "(printing all threads)" ) 574 575 // all threads 576 if (_verbose && _thread) { 577 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 578 st->cr(); 579 } 580 581 STEP(175, "(printing VM state)" ) 582 583 if (_verbose) { 584 // Safepoint state 585 st->print("VM state:"); 586 587 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 588 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 589 else st->print("not at safepoint"); 590 591 // Also see if error occurred during initialization or shutdown 592 if (!Universe::is_fully_initialized()) { 593 st->print(" (not fully initialized)"); 594 } else if (VM_Exit::vm_exited()) { 595 st->print(" (shutting down)"); 596 } else { 597 st->print(" (normal execution)"); 598 } 599 st->cr(); 600 st->cr(); 601 } 602 603 STEP(180, "(printing owned locks on error)" ) 604 605 // mutexes/monitors that currently have an owner 606 if (_verbose) { 607 print_owned_locks_on_error(st); 608 st->cr(); 609 } 610 611 STEP(190, "(printing heap information)" ) 612 613 if (_verbose && Universe::is_fully_initialized()) { 614 // print heap information before vm abort 615 Universe::print_on(st); 616 st->cr(); 617 } 618 619 STEP(195, "(printing code cache information)" ) 620 621 if (_verbose && Universe::is_fully_initialized()) { 622 // print code cache information before vm abort 623 CodeCache::print_bounds(st); 624 st->cr(); 625 } 626 627 STEP(200, "(printing dynamic libraries)" ) 628 629 if (_verbose) { 630 // dynamic libraries, or memory map 631 os::print_dll_info(st); 632 st->cr(); 633 } 634 635 STEP(210, "(printing VM options)" ) 636 637 if (_verbose) { 638 // VM options 639 Arguments::print_on(st); 640 st->cr(); 641 } 642 643 STEP(220, "(printing environment variables)" ) 644 645 if (_verbose) { 646 os::print_environment_variables(st, env_list, buf, sizeof(buf)); 647 st->cr(); 648 } 649 650 STEP(225, "(printing signal handlers)" ) 651 652 if (_verbose) { 653 os::print_signal_handlers(st, buf, sizeof(buf)); 654 st->cr(); 655 } 656 657 STEP(230, "" ) 658 659 if (_verbose) { 660 st->cr(); 661 st->print_cr("--------------- S Y S T E M ---------------"); 662 st->cr(); 663 } 664 665 STEP(240, "(printing OS information)" ) 666 667 if (_verbose) { 668 os::print_os_info(st); 669 st->cr(); 670 } 671 672 STEP(250, "(printing CPU info)" ) 673 if (_verbose) { 674 os::print_cpu_info(st); 675 st->cr(); 676 } 677 678 STEP(260, "(printing memory info)" ) 679 680 if (_verbose) { 681 os::print_memory_info(st); 682 st->cr(); 683 } 684 685 STEP(270, "(printing internal vm info)" ) 686 687 if (_verbose) { 688 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 689 st->cr(); 690 } 691 692 STEP(280, "(printing date and time)" ) 693 694 if (_verbose) { 695 os::print_date_and_time(st); 696 st->cr(); 697 } 698 699 END 700 701# undef BEGIN 702# undef STEP 703# undef END 704} 705 706VMError* volatile VMError::first_error = NULL; 707volatile jlong VMError::first_error_tid = -1; 708 709void VMError::report_and_die() { 710 // Don't allocate large buffer on stack 711 static char buffer[O_BUFLEN]; 712 713 // An error could happen before tty is initialized or after it has been 714 // destroyed. Here we use a very simple unbuffered fdStream for printing. 715 // Only out.print_raw() and out.print_raw_cr() should be used, as other 716 // printing methods need to allocate large buffer on stack. To format a 717 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 718 static fdStream out(defaultStream::output_fd()); 719 720 // How many errors occurred in error handler when reporting first_error. 721 static int recursive_error_count; 722 723 // We will first print a brief message to standard out (verbose = false), 724 // then save detailed information in log file (verbose = true). 725 static bool out_done = false; // done printing to standard out 726 static bool log_done = false; // done saving error log 727 static fdStream log; // error log 728 729 if (SuppressFatalErrorMessage) { 730 os::abort(); 731 } 732 jlong mytid = os::current_thread_id(); 733 if (first_error == NULL && 734 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 735 736 // first time 737 first_error_tid = mytid; 738 set_error_reported(); 739 740 if (ShowMessageBoxOnError) { 741 show_message_box(buffer, sizeof(buffer)); 742 743 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 744 // WatcherThread can kill JVM if the error handler hangs. 745 ShowMessageBoxOnError = false; 746 } 747 748 // reset signal handlers or exception filter; make sure recursive crashes 749 // are handled properly. 750 reset_signal_handlers(); 751 752 } else { 753 // If UseOsErrorReporting we call this for each level of the call stack 754 // while searching for the exception handler. Only the first level needs 755 // to be reported. 756 if (UseOSErrorReporting && log_done) return; 757 758 // This is not the first error, see if it happened in a different thread 759 // or in the same thread during error reporting. 760 if (first_error_tid != mytid) { 761 jio_snprintf(buffer, sizeof(buffer), 762 "[thread " INT64_FORMAT " also had an error]", 763 mytid); 764 out.print_raw_cr(buffer); 765 766 // error reporting is not MT-safe, block current thread 767 os::infinite_sleep(); 768 769 } else { 770 if (recursive_error_count++ > 30) { 771 out.print_raw_cr("[Too many errors, abort]"); 772 os::die(); 773 } 774 775 jio_snprintf(buffer, sizeof(buffer), 776 "[error occurred during error reporting %s, id 0x%x]", 777 first_error ? first_error->_current_step_info : "", 778 _id); 779 if (log.is_open()) { 780 log.cr(); 781 log.print_raw_cr(buffer); 782 log.cr(); 783 } else { 784 out.cr(); 785 out.print_raw_cr(buffer); 786 out.cr(); 787 } 788 } 789 } 790 791 // print to screen 792 if (!out_done) { 793 first_error->_verbose = false; 794 795 staticBufferStream sbs(buffer, sizeof(buffer), &out); 796 first_error->report(&sbs); 797 798 out_done = true; 799 800 first_error->_current_step = 0; // reset current_step 801 first_error->_current_step_info = ""; // reset current_step string 802 } 803 804 // print to error log file 805 if (!log_done) { 806 first_error->_verbose = true; 807 808 // see if log file is already open 809 if (!log.is_open()) { 810 // open log file 811 int fd = -1; 812 813 if (ErrorFile != NULL) { 814 bool copy_ok = 815 Arguments::copy_expand_pid(ErrorFile, strlen(ErrorFile), buffer, sizeof(buffer)); 816 if (copy_ok) { 817 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 818 } 819 } 820 821 if (fd == -1) { 822 const char *cwd = os::get_current_directory(buffer, sizeof(buffer)); 823 size_t len = strlen(cwd); 824 // either user didn't specify, or the user's location failed, 825 // so use the default name in the current directory 826 jio_snprintf(&buffer[len], sizeof(buffer)-len, "%shs_err_pid%u.log", 827 os::file_separator(), os::current_process_id()); 828 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 829 } 830 831 if (fd == -1) { 832 // try temp directory 833 const char * tmpdir = os::get_temp_directory(); 834 jio_snprintf(buffer, sizeof(buffer), "%s%shs_err_pid%u.log", 835 tmpdir, os::file_separator(), os::current_process_id()); 836 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 837 } 838 839 if (fd != -1) { 840 out.print_raw("# An error report file with more information is saved as:\n# "); 841 out.print_raw_cr(buffer); 842 os::set_error_file(buffer); 843 844 log.set_fd(fd); 845 } else { 846 out.print_raw_cr("# Can not save log file, dump to screen.."); 847 log.set_fd(defaultStream::output_fd()); 848 } 849 } 850 851 staticBufferStream sbs(buffer, O_BUFLEN, &log); 852 first_error->report(&sbs); 853 first_error->_current_step = 0; // reset current_step 854 first_error->_current_step_info = ""; // reset current_step string 855 856 if (log.fd() != defaultStream::output_fd()) { 857 close(log.fd()); 858 } 859 860 log.set_fd(-1); 861 log_done = true; 862 } 863 864 865 static bool skip_OnError = false; 866 if (!skip_OnError && OnError && OnError[0]) { 867 skip_OnError = true; 868 869 out.print_raw_cr("#"); 870 out.print_raw ("# -XX:OnError=\""); 871 out.print_raw (OnError); 872 out.print_raw_cr("\""); 873 874 char* cmd; 875 const char* ptr = OnError; 876 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 877 out.print_raw ("# Executing "); 878#if defined(LINUX) 879 out.print_raw ("/bin/sh -c "); 880#elif defined(SOLARIS) 881 out.print_raw ("/usr/bin/sh -c "); 882#endif 883 out.print_raw ("\""); 884 out.print_raw (cmd); 885 out.print_raw_cr("\" ..."); 886 887 os::fork_and_exec(cmd); 888 } 889 890 // done with OnError 891 OnError = NULL; 892 } 893 894 static bool skip_bug_url = false; 895 if (!skip_bug_url) { 896 skip_bug_url = true; 897 898 out.print_raw_cr("#"); 899 print_bug_submit_message(&out, _thread); 900 } 901 902 if (!UseOSErrorReporting) { 903 // os::abort() will call abort hooks, try it first. 904 static bool skip_os_abort = false; 905 if (!skip_os_abort) { 906 skip_os_abort = true; 907 os::abort(); 908 } 909 910 // if os::abort() doesn't abort, try os::die(); 911 os::die(); 912 } 913} 914 915/* 916 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 917 * ensures utilities such as jmap can observe the process is a consistent state. 918 */ 919class VM_ReportJavaOutOfMemory : public VM_Operation { 920 private: 921 VMError *_err; 922 public: 923 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 924 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 925 void doit(); 926}; 927 928void VM_ReportJavaOutOfMemory::doit() { 929 // Don't allocate large buffer on stack 930 static char buffer[O_BUFLEN]; 931 932 tty->print_cr("#"); 933 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 934 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 935 936 // make heap parsability 937 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 938 939 char* cmd; 940 const char* ptr = OnOutOfMemoryError; 941 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 942 tty->print("# Executing "); 943#if defined(LINUX) 944 tty->print ("/bin/sh -c "); 945#elif defined(SOLARIS) 946 tty->print ("/usr/bin/sh -c "); 947#endif 948 tty->print_cr("\"%s\"...", cmd); 949 950 os::fork_and_exec(cmd); 951 } 952} 953 954void VMError::report_java_out_of_memory() { 955 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 956 MutexLocker ml(Heap_lock); 957 VM_ReportJavaOutOfMemory op(this); 958 VMThread::execute(&op); 959 } 960} 961