vmError.cpp revision 113:ba764ed4b6f2
1/* 2 * Copyright 2003-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any 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 = ""; 69 _filename = NULL; 70 _lineno = 0; 71 72 _size = 0; 73} 74 75// Constructor for internal errors 76VMError::VMError(Thread* thread, const char* message, const char* filename, int lineno) { 77 _thread = thread; 78 _id = internal_error; // set it to a value that's not an OS exception/signal 79 _filename = filename; 80 _lineno = lineno; 81 _message = message; 82 83 _verbose = false; 84 _current_step = 0; 85 _current_step_info = NULL; 86 87 _pc = NULL; 88 _siginfo = NULL; 89 _context = NULL; 90 91 _size = 0; 92} 93 94// Constructor for OOM errors 95VMError::VMError(Thread* thread, size_t size, const char* message, const char* filename, int lineno) { 96 _thread = thread; 97 _id = oom_error; // set it to a value that's not an OS exception/signal 98 _filename = filename; 99 _lineno = lineno; 100 _message = message; 101 102 _verbose = false; 103 _current_step = 0; 104 _current_step_info = NULL; 105 106 _pc = NULL; 107 _siginfo = NULL; 108 _context = NULL; 109 110 _size = size; 111} 112 113 114// Constructor for non-fatal errors 115VMError::VMError(const char* message) { 116 _thread = NULL; 117 _id = internal_error; // set it to a value that's not an OS exception/signal 118 _filename = NULL; 119 _lineno = 0; 120 _message = message; 121 122 _verbose = false; 123 _current_step = 0; 124 _current_step_info = NULL; 125 126 _pc = NULL; 127 _siginfo = NULL; 128 _context = NULL; 129 130 _size = 0; 131} 132 133// -XX:OnError=<string>, where <string> can be a list of commands, separated 134// by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by 135// a single "%". Some examples: 136// 137// -XX:OnError="pmap %p" // show memory map 138// -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger 139// -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com" 140// -XX:OnError="kill -9 %p" // ?#!@# 141 142// A simple parser for -XX:OnError, usage: 143// ptr = OnError; 144// while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 145// ... ... 146static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 147 if (ptr == NULL || *ptr == NULL) return NULL; 148 149 const char* cmd = *ptr; 150 151 // skip leading blanks or ';' 152 while (*cmd == ' ' || *cmd == ';') cmd++; 153 154 if (*cmd == '\0') return NULL; 155 156 const char * cmdend = cmd; 157 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 158 159 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 160 161 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 162 return buf; 163} 164 165 166static void print_bug_submit_message(outputStream *out, Thread *thread) { 167 if (out == NULL) return; 168 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 169 out->print_raw ("# "); 170 out->print_raw_cr(Arguments::java_vendor_url_bug()); 171 // If the crash is in native code, encourage user to submit a bug to the 172 // provider of that code. 173 if (thread && thread->is_Java_thread() && 174 !thread->is_hidden_from_external_view()) { 175 JavaThread* jt = (JavaThread*)thread; 176 if (jt->thread_state() == _thread_in_native) { 177 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 178 } 179 } 180 out->print_raw_cr("#"); 181} 182 183 184// Return a string to describe the error 185char* VMError::error_string(char* buf, int buflen) { 186 char signame_buf[64]; 187 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 188 189 if (signame) { 190 jio_snprintf(buf, buflen, 191 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 192 signame, _id, _pc, 193 os::current_process_id(), os::current_thread_id()); 194 } else { 195 if (_filename != NULL && _lineno > 0) { 196 // skip directory names 197 char separator = os::file_separator()[0]; 198 const char *p = strrchr(_filename, separator); 199 200 jio_snprintf(buf, buflen, 201 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT " \nError: %s", 202 p ? p + 1 : _filename, _lineno, 203 os::current_process_id(), os::current_thread_id(), 204 _message ? _message : ""); 205 } else { 206 jio_snprintf(buf, buflen, 207 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 208 _id, os::current_process_id(), os::current_thread_id()); 209 } 210 } 211 212 return buf; 213} 214 215 216// This is the main function to report a fatal error. Only one thread can 217// call this function, so we don't need to worry about MT-safety. But it's 218// possible that the error handler itself may crash or die on an internal 219// error, for example, when the stack/heap is badly damaged. We must be 220// able to handle recursive errors that happen inside error handler. 221// 222// Error reporting is done in several steps. If a crash or internal error 223// occurred when reporting an error, the nested signal/exception handler 224// can skip steps that are already (or partially) done. Error reporting will 225// continue from the next step. This allows us to retrieve and print 226// information that may be unsafe to get after a fatal error. If it happens, 227// you may find nested report_and_die() frames when you look at the stack 228// in a debugger. 229// 230// In general, a hang in error handler is much worse than a crash or internal 231// error, as it's harder to recover from a hang. Deadlock can happen if we 232// try to grab a lock that is already owned by current thread, or if the 233// owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 234// error handler and all the functions it called should avoid grabbing any 235// lock. An important thing to notice is that memory allocation needs a lock. 236// 237// We should avoid using large stack allocated buffers. Many errors happen 238// when stack space is already low. Making things even worse is that there 239// could be nested report_and_die() calls on stack (see above). Only one 240// thread can report error, so large buffers are statically allocated in data 241// segment. 242 243void VMError::report(outputStream* st) { 244# define BEGIN if (_current_step == 0) { _current_step = 1; 245# define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 246# define END } 247 248 // don't allocate large buffer on stack 249 static char buf[O_BUFLEN]; 250 251 BEGIN 252 253 STEP(10, "(printing fatal error message)") 254 255 st->print_cr("#"); 256 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 257 258 STEP(15, "(printing type of error)") 259 260 switch(_id) { 261 case oom_error: 262 st->print_cr("#"); 263 st->print("# java.lang.OutOfMemoryError: "); 264 if (_size) { 265 st->print("requested "); 266 sprintf(buf,"%d",_size); 267 st->print(buf); 268 st->print(" bytes"); 269 if (_message != NULL) { 270 st->print(" for "); 271 st->print(_message); 272 } 273 st->print_cr(". Out of swap space?"); 274 } else { 275 if (_message != NULL) 276 st->print_cr(_message); 277 } 278 break; 279 case internal_error: 280 default: 281 break; 282 } 283 284 STEP(20, "(printing exception/signal name)") 285 286 st->print_cr("#"); 287 st->print("# "); 288 // Is it an OS exception/signal? 289 if (os::exception_name(_id, buf, sizeof(buf))) { 290 st->print("%s", buf); 291 st->print(" (0x%x)", _id); // signal number 292 st->print(" at pc=" PTR_FORMAT, _pc); 293 } else { 294 st->print("Internal Error"); 295 if (_filename != NULL && _lineno > 0) { 296#ifdef PRODUCT 297 // In product mode chop off pathname? 298 char separator = os::file_separator()[0]; 299 const char *p = strrchr(_filename, separator); 300 const char *file = p ? p+1 : _filename; 301#else 302 const char *file = _filename; 303#endif 304 size_t len = strlen(file); 305 size_t buflen = sizeof(buf); 306 307 strncpy(buf, file, buflen); 308 if (len + 10 < buflen) { 309 sprintf(buf + len, ":" SIZE_FORMAT, _lineno); 310 } 311 st->print(" (%s)", buf); 312 } else { 313 st->print(" (0x%x)", _id); 314 } 315 } 316 317 STEP(30, "(printing current thread and pid)") 318 319 // process id, thread id 320 st->print(", pid=%d", os::current_process_id()); 321 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 322 st->cr(); 323 324 STEP(40, "(printing error message)") 325 326 // error message 327 if (_message && _message[0] != '\0') { 328 st->print_cr("# Error: %s", _message); 329 } 330 331 STEP(50, "(printing Java version string)") 332 333 // VM version 334 st->print_cr("#"); 335 st->print_cr("# Java VM: %s (%s %s %s %s)", 336 Abstract_VM_Version::vm_name(), 337 Abstract_VM_Version::vm_release(), 338 Abstract_VM_Version::vm_info_string(), 339 Abstract_VM_Version::vm_platform_string(), 340 UseCompressedOops ? "compressed oops" : "" 341 ); 342 343 STEP(60, "(printing problematic frame)") 344 345 // Print current frame if we have a context (i.e. it's a crash) 346 if (_context) { 347 st->print_cr("# Problematic frame:"); 348 st->print("# "); 349 frame fr = os::fetch_frame_from_context(_context); 350 fr.print_on_error(st, buf, sizeof(buf)); 351 st->cr(); 352 st->print_cr("#"); 353 } 354 355 STEP(65, "(printing bug submit message)") 356 357 if (_verbose) print_bug_submit_message(st, _thread); 358 359 STEP(70, "(printing thread)" ) 360 361 if (_verbose) { 362 st->cr(); 363 st->print_cr("--------------- T H R E A D ---------------"); 364 st->cr(); 365 } 366 367 STEP(80, "(printing current thread)" ) 368 369 // current thread 370 if (_verbose) { 371 if (_thread) { 372 st->print("Current thread (" PTR_FORMAT "): ", _thread); 373 _thread->print_on_error(st, buf, sizeof(buf)); 374 st->cr(); 375 } else { 376 st->print_cr("Current thread is native thread"); 377 } 378 st->cr(); 379 } 380 381 STEP(90, "(printing siginfo)" ) 382 383 // signal no, signal code, address that caused the fault 384 if (_verbose && _siginfo) { 385 os::print_siginfo(st, _siginfo); 386 st->cr(); 387 } 388 389 STEP(100, "(printing registers, top of stack, instructions near pc)") 390 391 // registers, top of stack, instructions near pc 392 if (_verbose && _context) { 393 os::print_context(st, _context); 394 st->cr(); 395 } 396 397 STEP(110, "(printing stack bounds)" ) 398 399 if (_verbose) { 400 st->print("Stack: "); 401 402 address stack_top; 403 size_t stack_size; 404 405 if (_thread) { 406 stack_top = _thread->stack_base(); 407 stack_size = _thread->stack_size(); 408 } else { 409 stack_top = os::current_stack_base(); 410 stack_size = os::current_stack_size(); 411 } 412 413 address stack_bottom = stack_top - stack_size; 414 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 415 416 frame fr = _context ? os::fetch_frame_from_context(_context) 417 : os::current_frame(); 418 419 if (fr.sp()) { 420 st->print(", sp=" PTR_FORMAT, fr.sp()); 421 st->print(", free space=%dk", 422 ((intptr_t)fr.sp() - (intptr_t)stack_bottom) >> 10); 423 } 424 425 st->cr(); 426 } 427 428 STEP(120, "(printing native stack)" ) 429 430 if (_verbose) { 431 frame fr = _context ? os::fetch_frame_from_context(_context) 432 : os::current_frame(); 433 434 // see if it's a valid frame 435 if (fr.pc()) { 436 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)"); 437 438 int count = 0; 439 440 while (count++ < StackPrintLimit) { 441 fr.print_on_error(st, buf, sizeof(buf)); 442 st->cr(); 443 if (os::is_first_C_frame(&fr)) break; 444 fr = os::get_sender_for_C_frame(&fr); 445 } 446 447 if (count > StackPrintLimit) { 448 st->print_cr("...<more frames>..."); 449 } 450 451 st->cr(); 452 } 453 } 454 455 STEP(130, "(printing Java stack)" ) 456 457 if (_verbose && _thread && _thread->is_Java_thread()) { 458 JavaThread* jt = (JavaThread*)_thread; 459 if (jt->has_last_Java_frame()) { 460 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 461 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 462 sfs.current()->print_on_error(st, buf, sizeof(buf)); 463 st->cr(); 464 } 465 } 466 } 467 468 STEP(140, "(printing VM operation)" ) 469 470 if (_verbose && _thread && _thread->is_VM_thread()) { 471 VMThread* t = (VMThread*)_thread; 472 VM_Operation* op = t->vm_operation(); 473 if (op) { 474 op->print_on_error(st); 475 st->cr(); 476 st->cr(); 477 } 478 } 479 480 STEP(150, "(printing current compile task)" ) 481 482 if (_verbose && _thread && _thread->is_Compiler_thread()) { 483 CompilerThread* t = (CompilerThread*)_thread; 484 if (t->task()) { 485 st->cr(); 486 st->print_cr("Current CompileTask:"); 487 t->task()->print_line_on_error(st, buf, sizeof(buf)); 488 st->cr(); 489 } 490 } 491 492 STEP(160, "(printing process)" ) 493 494 if (_verbose) { 495 st->cr(); 496 st->print_cr("--------------- P R O C E S S ---------------"); 497 st->cr(); 498 } 499 500 STEP(170, "(printing all threads)" ) 501 502 // all threads 503 if (_verbose && _thread) { 504 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 505 st->cr(); 506 } 507 508 STEP(175, "(printing VM state)" ) 509 510 if (_verbose) { 511 // Safepoint state 512 st->print("VM state:"); 513 514 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 515 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 516 else st->print("not at safepoint"); 517 518 // Also see if error occurred during initialization or shutdown 519 if (!Universe::is_fully_initialized()) { 520 st->print(" (not fully initialized)"); 521 } else if (VM_Exit::vm_exited()) { 522 st->print(" (shutting down)"); 523 } else { 524 st->print(" (normal execution)"); 525 } 526 st->cr(); 527 st->cr(); 528 } 529 530 STEP(180, "(printing owned locks on error)" ) 531 532 // mutexes/monitors that currently have an owner 533 if (_verbose) { 534 print_owned_locks_on_error(st); 535 st->cr(); 536 } 537 538 STEP(190, "(printing heap information)" ) 539 540 if (_verbose && Universe::is_fully_initialized()) { 541 // print heap information before vm abort 542 Universe::print_on(st); 543 st->cr(); 544 } 545 546 STEP(200, "(printing dynamic libraries)" ) 547 548 if (_verbose) { 549 // dynamic libraries, or memory map 550 os::print_dll_info(st); 551 st->cr(); 552 } 553 554 STEP(210, "(printing VM options)" ) 555 556 if (_verbose) { 557 // VM options 558 Arguments::print_on(st); 559 st->cr(); 560 } 561 562 STEP(220, "(printing environment variables)" ) 563 564 if (_verbose) { 565 os::print_environment_variables(st, env_list, buf, sizeof(buf)); 566 st->cr(); 567 } 568 569 STEP(225, "(printing signal handlers)" ) 570 571 if (_verbose) { 572 os::print_signal_handlers(st, buf, sizeof(buf)); 573 st->cr(); 574 } 575 576 STEP(230, "" ) 577 578 if (_verbose) { 579 st->cr(); 580 st->print_cr("--------------- S Y S T E M ---------------"); 581 st->cr(); 582 } 583 584 STEP(240, "(printing OS information)" ) 585 586 if (_verbose) { 587 os::print_os_info(st); 588 st->cr(); 589 } 590 591 STEP(250, "(printing CPU info)" ) 592 if (_verbose) { 593 os::print_cpu_info(st); 594 st->cr(); 595 } 596 597 STEP(260, "(printing memory info)" ) 598 599 if (_verbose) { 600 os::print_memory_info(st); 601 st->cr(); 602 } 603 604 STEP(270, "(printing internal vm info)" ) 605 606 if (_verbose) { 607 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 608 st->cr(); 609 } 610 611 STEP(280, "(printing date and time)" ) 612 613 if (_verbose) { 614 os::print_date_and_time(st); 615 st->cr(); 616 } 617 618 END 619 620# undef BEGIN 621# undef STEP 622# undef END 623} 624 625 626void VMError::report_and_die() { 627 // Don't allocate large buffer on stack 628 static char buffer[O_BUFLEN]; 629 630 // First error, and its thread id. We must be able to handle native thread, 631 // so use thread id instead of Thread* to identify thread. 632 static VMError* first_error; 633 static jlong first_error_tid; 634 635 // An error could happen before tty is initialized or after it has been 636 // destroyed. Here we use a very simple unbuffered fdStream for printing. 637 // Only out.print_raw() and out.print_raw_cr() should be used, as other 638 // printing methods need to allocate large buffer on stack. To format a 639 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 640 static fdStream out(defaultStream::output_fd()); 641 642 // How many errors occurred in error handler when reporting first_error. 643 static int recursive_error_count; 644 645 // We will first print a brief message to standard out (verbose = false), 646 // then save detailed information in log file (verbose = true). 647 static bool out_done = false; // done printing to standard out 648 static bool log_done = false; // done saving error log 649 static fdStream log; // error log 650 651 if (SuppressFatalErrorMessage) { 652 os::abort(); 653 } 654 jlong mytid = os::current_thread_id(); 655 if (first_error == NULL && 656 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 657 658 // first time 659 first_error_tid = mytid; 660 set_error_reported(); 661 662 if (ShowMessageBoxOnError) { 663 show_message_box(buffer, sizeof(buffer)); 664 665 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 666 // WatcherThread can kill JVM if the error handler hangs. 667 ShowMessageBoxOnError = false; 668 } 669 670 // reset signal handlers or exception filter; make sure recursive crashes 671 // are handled properly. 672 reset_signal_handlers(); 673 674 } else { 675 // This is not the first error, see if it happened in a different thread 676 // or in the same thread during error reporting. 677 if (first_error_tid != mytid) { 678 jio_snprintf(buffer, sizeof(buffer), 679 "[thread " INT64_FORMAT " also had an error]", 680 mytid); 681 out.print_raw_cr(buffer); 682 683 // error reporting is not MT-safe, block current thread 684 os::infinite_sleep(); 685 686 } else { 687 if (recursive_error_count++ > 30) { 688 out.print_raw_cr("[Too many errors, abort]"); 689 os::die(); 690 } 691 692 jio_snprintf(buffer, sizeof(buffer), 693 "[error occurred during error reporting %s, id 0x%x]", 694 first_error ? first_error->_current_step_info : "", 695 _id); 696 if (log.is_open()) { 697 log.cr(); 698 log.print_raw_cr(buffer); 699 log.cr(); 700 } else { 701 out.cr(); 702 out.print_raw_cr(buffer); 703 out.cr(); 704 } 705 } 706 } 707 708 // print to screen 709 if (!out_done) { 710 first_error->_verbose = false; 711 712 staticBufferStream sbs(buffer, sizeof(buffer), &out); 713 first_error->report(&sbs); 714 715 out_done = true; 716 717 first_error->_current_step = 0; // reset current_step 718 first_error->_current_step_info = ""; // reset current_step string 719 } 720 721 // print to error log file 722 if (!log_done) { 723 first_error->_verbose = true; 724 725 // see if log file is already open 726 if (!log.is_open()) { 727 // open log file 728 int fd = -1; 729 730 if (ErrorFile != NULL) { 731 bool copy_ok = 732 Arguments::copy_expand_pid(ErrorFile, strlen(ErrorFile), buffer, sizeof(buffer)); 733 if (copy_ok) { 734 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 735 } 736 } 737 738 if (fd == -1) { 739 const char *cwd = os::get_current_directory(buffer, sizeof(buffer)); 740 size_t len = strlen(cwd); 741 // either user didn't specify, or the user's location failed, 742 // so use the default name in the current directory 743 jio_snprintf(&buffer[len], sizeof(buffer)-len, "%shs_err_pid%u.log", 744 os::file_separator(), os::current_process_id()); 745 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 746 } 747 748 if (fd == -1) { 749 // try temp directory 750 const char * tmpdir = os::get_temp_directory(); 751 jio_snprintf(buffer, sizeof(buffer), "%shs_err_pid%u.log", 752 (tmpdir ? tmpdir : ""), os::current_process_id()); 753 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 754 } 755 756 if (fd != -1) { 757 out.print_raw("# An error report file with more information is saved as:\n# "); 758 out.print_raw_cr(buffer); 759 os::set_error_file(buffer); 760 761 log.set_fd(fd); 762 } else { 763 out.print_raw_cr("# Can not save log file, dump to screen.."); 764 log.set_fd(defaultStream::output_fd()); 765 } 766 } 767 768 staticBufferStream sbs(buffer, O_BUFLEN, &log); 769 first_error->report(&sbs); 770 first_error->_current_step = 0; // reset current_step 771 first_error->_current_step_info = ""; // reset current_step string 772 773 if (log.fd() != defaultStream::output_fd()) { 774 close(log.fd()); 775 } 776 777 log.set_fd(-1); 778 log_done = true; 779 } 780 781 782 static bool skip_OnError = false; 783 if (!skip_OnError && OnError && OnError[0]) { 784 skip_OnError = true; 785 786 out.print_raw_cr("#"); 787 out.print_raw ("# -XX:OnError=\""); 788 out.print_raw (OnError); 789 out.print_raw_cr("\""); 790 791 char* cmd; 792 const char* ptr = OnError; 793 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 794 out.print_raw ("# Executing "); 795#if defined(LINUX) 796 out.print_raw ("/bin/sh -c "); 797#elif defined(SOLARIS) 798 out.print_raw ("/usr/bin/sh -c "); 799#endif 800 out.print_raw ("\""); 801 out.print_raw (cmd); 802 out.print_raw_cr("\" ..."); 803 804 os::fork_and_exec(cmd); 805 } 806 807 // done with OnError 808 OnError = NULL; 809 } 810 811 static bool skip_bug_url = false; 812 if (!skip_bug_url) { 813 skip_bug_url = true; 814 815 out.print_raw_cr("#"); 816 print_bug_submit_message(&out, _thread); 817 } 818 819 if (!UseOSErrorReporting) { 820 // os::abort() will call abort hooks, try it first. 821 static bool skip_os_abort = false; 822 if (!skip_os_abort) { 823 skip_os_abort = true; 824 os::abort(); 825 } 826 827 // if os::abort() doesn't abort, try os::die(); 828 os::die(); 829 } 830} 831 832/* 833 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 834 * ensures utilities such as jmap can observe the process is a consistent state. 835 */ 836class VM_ReportJavaOutOfMemory : public VM_Operation { 837 private: 838 VMError *_err; 839 public: 840 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 841 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 842 void doit(); 843}; 844 845void VM_ReportJavaOutOfMemory::doit() { 846 // Don't allocate large buffer on stack 847 static char buffer[O_BUFLEN]; 848 849 tty->print_cr("#"); 850 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 851 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 852 853 // make heap parsability 854 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 855 856 char* cmd; 857 const char* ptr = OnOutOfMemoryError; 858 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 859 tty->print("# Executing "); 860#if defined(LINUX) 861 tty->print ("/bin/sh -c "); 862#elif defined(SOLARIS) 863 tty->print ("/usr/bin/sh -c "); 864#endif 865 tty->print_cr("\"%s\"...", cmd); 866 867 os::fork_and_exec(cmd); 868 } 869} 870 871void VMError::report_java_out_of_memory() { 872 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 873 MutexLocker ml(Heap_lock); 874 VM_ReportJavaOutOfMemory op(this); 875 VMThread::execute(&op); 876 } 877} 878