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src/share/vm/utilities/vmError.cpp@7bb995fbd3c0
src/share/vm/utilities/vmError.cpp
Thu, 12 Mar 2009 18:16:36 -0700
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1 /*
2 * Copyright 2003-2009 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 */
25 # include "incls/_precompiled.incl"
26 # include "incls/_vmError.cpp.incl"
28 // List of environment variables that should be reported in error log file.
29 const char *env_list[] = {
30 // All platforms
31 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
32 "JAVA_COMPILER", "PATH", "USERNAME",
34 // Env variables that are defined on Solaris/Linux
35 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
36 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
38 // defined on Linux
39 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
41 // defined on Windows
42 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
44 (const char *)0
45 };
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().
56 // Constructor for crashes
57 VMError::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;
64 _verbose = false;
65 _current_step = 0;
66 _current_step_info = NULL;
68 _message = "";
69 _filename = NULL;
70 _lineno = 0;
72 _size = 0;
73 }
75 // Constructor for internal errors
76 VMError::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;
83 _verbose = false;
84 _current_step = 0;
85 _current_step_info = NULL;
87 _pc = NULL;
88 _siginfo = NULL;
89 _context = NULL;
91 _size = 0;
92 }
94 // Constructor for OOM errors
95 VMError::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;
102 _verbose = false;
103 _current_step = 0;
104 _current_step_info = NULL;
106 _pc = NULL;
107 _siginfo = NULL;
108 _context = NULL;
110 _size = size;
111 }
114 // Constructor for non-fatal errors
115 VMError::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;
122 _verbose = false;
123 _current_step = 0;
124 _current_step_info = NULL;
126 _pc = NULL;
127 _siginfo = NULL;
128 _context = NULL;
130 _size = 0;
131 }
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" // ?#!@#
142 // A simple parser for -XX:OnError, usage:
143 // ptr = OnError;
144 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
145 // ... ...
146 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
147 if (ptr == NULL || *ptr == NULL) return NULL;
149 const char* cmd = *ptr;
151 // skip leading blanks or ';'
152 while (*cmd == ' ' || *cmd == ';') cmd++;
154 if (*cmd == '\0') return NULL;
156 const char * cmdend = cmd;
157 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
159 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
161 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
162 return buf;
163 }
166 static 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 }
184 // Return a string to describe the error
185 char* 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));
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);
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 }
212 return buf;
213 }
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.
243 void 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 }
248 // don't allocate large buffer on stack
249 static char buf[O_BUFLEN];
251 BEGIN
253 STEP(10, "(printing fatal error message)")
255 st->print_cr("#");
256 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
258 STEP(15, "(printing type of error)")
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,SIZE_FORMAT,_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 }
284 STEP(20, "(printing exception/signal name)")
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);
307 strncpy(buf, file, buflen);
308 if (len + 10 < buflen) {
309 sprintf(buf + len, ":%d", _lineno);
310 }
311 st->print(" (%s)", buf);
312 } else {
313 st->print(" (0x%x)", _id);
314 }
315 }
317 STEP(30, "(printing current thread and pid)")
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();
324 STEP(40, "(printing error message)")
326 // error message
327 if (_message && _message[0] != '\0') {
328 st->print_cr("# Error: %s", _message);
329 }
331 STEP(50, "(printing Java version string)")
333 // VM version
334 st->print_cr("#");
335 JDK_Version::current().to_string(buf, sizeof(buf));
336 st->print_cr("# JRE version: %s", buf);
337 st->print_cr("# Java VM: %s (%s %s %s %s)",
338 Abstract_VM_Version::vm_name(),
339 Abstract_VM_Version::vm_release(),
340 Abstract_VM_Version::vm_info_string(),
341 Abstract_VM_Version::vm_platform_string(),
342 UseCompressedOops ? "compressed oops" : ""
343 );
345 STEP(60, "(printing problematic frame)")
347 // Print current frame if we have a context (i.e. it's a crash)
348 if (_context) {
349 st->print_cr("# Problematic frame:");
350 st->print("# ");
351 frame fr = os::fetch_frame_from_context(_context);
352 fr.print_on_error(st, buf, sizeof(buf));
353 st->cr();
354 st->print_cr("#");
355 }
357 STEP(65, "(printing bug submit message)")
359 if (_verbose) print_bug_submit_message(st, _thread);
361 STEP(70, "(printing thread)" )
363 if (_verbose) {
364 st->cr();
365 st->print_cr("--------------- T H R E A D ---------------");
366 st->cr();
367 }
369 STEP(80, "(printing current thread)" )
371 // current thread
372 if (_verbose) {
373 if (_thread) {
374 st->print("Current thread (" PTR_FORMAT "): ", _thread);
375 _thread->print_on_error(st, buf, sizeof(buf));
376 st->cr();
377 } else {
378 st->print_cr("Current thread is native thread");
379 }
380 st->cr();
381 }
383 STEP(90, "(printing siginfo)" )
385 // signal no, signal code, address that caused the fault
386 if (_verbose && _siginfo) {
387 os::print_siginfo(st, _siginfo);
388 st->cr();
389 }
391 STEP(100, "(printing registers, top of stack, instructions near pc)")
393 // registers, top of stack, instructions near pc
394 if (_verbose && _context) {
395 os::print_context(st, _context);
396 st->cr();
397 }
399 STEP(110, "(printing stack bounds)" )
401 if (_verbose) {
402 st->print("Stack: ");
404 address stack_top;
405 size_t stack_size;
407 if (_thread) {
408 stack_top = _thread->stack_base();
409 stack_size = _thread->stack_size();
410 } else {
411 stack_top = os::current_stack_base();
412 stack_size = os::current_stack_size();
413 }
415 address stack_bottom = stack_top - stack_size;
416 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
418 frame fr = _context ? os::fetch_frame_from_context(_context)
419 : os::current_frame();
421 if (fr.sp()) {
422 st->print(", sp=" PTR_FORMAT, fr.sp());
423 st->print(", free space=%" INTPTR_FORMAT "k",
424 ((intptr_t)fr.sp() - (intptr_t)stack_bottom) >> 10);
425 }
427 st->cr();
428 }
430 STEP(120, "(printing native stack)" )
432 if (_verbose) {
433 frame fr = _context ? os::fetch_frame_from_context(_context)
434 : os::current_frame();
436 // see if it's a valid frame
437 if (fr.pc()) {
438 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
440 int count = 0;
442 while (count++ < StackPrintLimit) {
443 fr.print_on_error(st, buf, sizeof(buf));
444 st->cr();
445 if (os::is_first_C_frame(&fr)) break;
446 fr = os::get_sender_for_C_frame(&fr);
447 }
449 if (count > StackPrintLimit) {
450 st->print_cr("...<more frames>...");
451 }
453 st->cr();
454 }
455 }
457 STEP(130, "(printing Java stack)" )
459 if (_verbose && _thread && _thread->is_Java_thread()) {
460 JavaThread* jt = (JavaThread*)_thread;
461 if (jt->has_last_Java_frame()) {
462 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
463 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
464 sfs.current()->print_on_error(st, buf, sizeof(buf));
465 st->cr();
466 }
467 }
468 }
470 STEP(140, "(printing VM operation)" )
472 if (_verbose && _thread && _thread->is_VM_thread()) {
473 VMThread* t = (VMThread*)_thread;
474 VM_Operation* op = t->vm_operation();
475 if (op) {
476 op->print_on_error(st);
477 st->cr();
478 st->cr();
479 }
480 }
482 STEP(150, "(printing current compile task)" )
484 if (_verbose && _thread && _thread->is_Compiler_thread()) {
485 CompilerThread* t = (CompilerThread*)_thread;
486 if (t->task()) {
487 st->cr();
488 st->print_cr("Current CompileTask:");
489 t->task()->print_line_on_error(st, buf, sizeof(buf));
490 st->cr();
491 }
492 }
494 STEP(160, "(printing process)" )
496 if (_verbose) {
497 st->cr();
498 st->print_cr("--------------- P R O C E S S ---------------");
499 st->cr();
500 }
502 STEP(170, "(printing all threads)" )
504 // all threads
505 if (_verbose && _thread) {
506 Threads::print_on_error(st, _thread, buf, sizeof(buf));
507 st->cr();
508 }
510 STEP(175, "(printing VM state)" )
512 if (_verbose) {
513 // Safepoint state
514 st->print("VM state:");
516 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
517 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
518 else st->print("not at safepoint");
520 // Also see if error occurred during initialization or shutdown
521 if (!Universe::is_fully_initialized()) {
522 st->print(" (not fully initialized)");
523 } else if (VM_Exit::vm_exited()) {
524 st->print(" (shutting down)");
525 } else {
526 st->print(" (normal execution)");
527 }
528 st->cr();
529 st->cr();
530 }
532 STEP(180, "(printing owned locks on error)" )
534 // mutexes/monitors that currently have an owner
535 if (_verbose) {
536 print_owned_locks_on_error(st);
537 st->cr();
538 }
540 STEP(190, "(printing heap information)" )
542 if (_verbose && Universe::is_fully_initialized()) {
543 // print heap information before vm abort
544 Universe::print_on(st);
545 st->cr();
546 }
548 STEP(200, "(printing dynamic libraries)" )
550 if (_verbose) {
551 // dynamic libraries, or memory map
552 os::print_dll_info(st);
553 st->cr();
554 }
556 STEP(210, "(printing VM options)" )
558 if (_verbose) {
559 // VM options
560 Arguments::print_on(st);
561 st->cr();
562 }
564 STEP(220, "(printing environment variables)" )
566 if (_verbose) {
567 os::print_environment_variables(st, env_list, buf, sizeof(buf));
568 st->cr();
569 }
571 STEP(225, "(printing signal handlers)" )
573 if (_verbose) {
574 os::print_signal_handlers(st, buf, sizeof(buf));
575 st->cr();
576 }
578 STEP(230, "" )
580 if (_verbose) {
581 st->cr();
582 st->print_cr("--------------- S Y S T E M ---------------");
583 st->cr();
584 }
586 STEP(240, "(printing OS information)" )
588 if (_verbose) {
589 os::print_os_info(st);
590 st->cr();
591 }
593 STEP(250, "(printing CPU info)" )
594 if (_verbose) {
595 os::print_cpu_info(st);
596 st->cr();
597 }
599 STEP(260, "(printing memory info)" )
601 if (_verbose) {
602 os::print_memory_info(st);
603 st->cr();
604 }
606 STEP(270, "(printing internal vm info)" )
608 if (_verbose) {
609 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
610 st->cr();
611 }
613 STEP(280, "(printing date and time)" )
615 if (_verbose) {
616 os::print_date_and_time(st);
617 st->cr();
618 }
620 END
622 # undef BEGIN
623 # undef STEP
624 # undef END
625 }
628 void VMError::report_and_die() {
629 // Don't allocate large buffer on stack
630 static char buffer[O_BUFLEN];
632 // First error, and its thread id. We must be able to handle native thread,
633 // so use thread id instead of Thread* to identify thread.
634 static VMError* first_error;
635 static jlong first_error_tid;
637 // An error could happen before tty is initialized or after it has been
638 // destroyed. Here we use a very simple unbuffered fdStream for printing.
639 // Only out.print_raw() and out.print_raw_cr() should be used, as other
640 // printing methods need to allocate large buffer on stack. To format a
641 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
642 static fdStream out(defaultStream::output_fd());
644 // How many errors occurred in error handler when reporting first_error.
645 static int recursive_error_count;
647 // We will first print a brief message to standard out (verbose = false),
648 // then save detailed information in log file (verbose = true).
649 static bool out_done = false; // done printing to standard out
650 static bool log_done = false; // done saving error log
651 static fdStream log; // error log
653 if (SuppressFatalErrorMessage) {
654 os::abort();
655 }
656 jlong mytid = os::current_thread_id();
657 if (first_error == NULL &&
658 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
660 // first time
661 first_error_tid = mytid;
662 set_error_reported();
664 if (ShowMessageBoxOnError) {
665 show_message_box(buffer, sizeof(buffer));
667 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
668 // WatcherThread can kill JVM if the error handler hangs.
669 ShowMessageBoxOnError = false;
670 }
672 // reset signal handlers or exception filter; make sure recursive crashes
673 // are handled properly.
674 reset_signal_handlers();
676 } else {
677 // If UseOsErrorReporting we call this for each level of the call stack
678 // while searching for the exception handler. Only the first level needs
679 // to be reported.
680 if (UseOSErrorReporting && log_done) return;
682 // This is not the first error, see if it happened in a different thread
683 // or in the same thread during error reporting.
684 if (first_error_tid != mytid) {
685 jio_snprintf(buffer, sizeof(buffer),
686 "[thread " INT64_FORMAT " also had an error]",
687 mytid);
688 out.print_raw_cr(buffer);
690 // error reporting is not MT-safe, block current thread
691 os::infinite_sleep();
693 } else {
694 if (recursive_error_count++ > 30) {
695 out.print_raw_cr("[Too many errors, abort]");
696 os::die();
697 }
699 jio_snprintf(buffer, sizeof(buffer),
700 "[error occurred during error reporting %s, id 0x%x]",
701 first_error ? first_error->_current_step_info : "",
702 _id);
703 if (log.is_open()) {
704 log.cr();
705 log.print_raw_cr(buffer);
706 log.cr();
707 } else {
708 out.cr();
709 out.print_raw_cr(buffer);
710 out.cr();
711 }
712 }
713 }
715 // print to screen
716 if (!out_done) {
717 first_error->_verbose = false;
719 staticBufferStream sbs(buffer, sizeof(buffer), &out);
720 first_error->report(&sbs);
722 out_done = true;
724 first_error->_current_step = 0; // reset current_step
725 first_error->_current_step_info = ""; // reset current_step string
726 }
728 // print to error log file
729 if (!log_done) {
730 first_error->_verbose = true;
732 // see if log file is already open
733 if (!log.is_open()) {
734 // open log file
735 int fd = -1;
737 if (ErrorFile != NULL) {
738 bool copy_ok =
739 Arguments::copy_expand_pid(ErrorFile, strlen(ErrorFile), buffer, sizeof(buffer));
740 if (copy_ok) {
741 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666);
742 }
743 }
745 if (fd == -1) {
746 const char *cwd = os::get_current_directory(buffer, sizeof(buffer));
747 size_t len = strlen(cwd);
748 // either user didn't specify, or the user's location failed,
749 // so use the default name in the current directory
750 jio_snprintf(&buffer[len], sizeof(buffer)-len, "%shs_err_pid%u.log",
751 os::file_separator(), os::current_process_id());
752 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666);
753 }
755 if (fd == -1) {
756 // try temp directory
757 const char * tmpdir = os::get_temp_directory();
758 jio_snprintf(buffer, sizeof(buffer), "%shs_err_pid%u.log",
759 (tmpdir ? tmpdir : ""), os::current_process_id());
760 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666);
761 }
763 if (fd != -1) {
764 out.print_raw("# An error report file with more information is saved as:\n# ");
765 out.print_raw_cr(buffer);
766 os::set_error_file(buffer);
768 log.set_fd(fd);
769 } else {
770 out.print_raw_cr("# Can not save log file, dump to screen..");
771 log.set_fd(defaultStream::output_fd());
772 }
773 }
775 staticBufferStream sbs(buffer, O_BUFLEN, &log);
776 first_error->report(&sbs);
777 first_error->_current_step = 0; // reset current_step
778 first_error->_current_step_info = ""; // reset current_step string
780 if (log.fd() != defaultStream::output_fd()) {
781 close(log.fd());
782 }
784 log.set_fd(-1);
785 log_done = true;
786 }
789 static bool skip_OnError = false;
790 if (!skip_OnError && OnError && OnError[0]) {
791 skip_OnError = true;
793 out.print_raw_cr("#");
794 out.print_raw ("# -XX:OnError=\"");
795 out.print_raw (OnError);
796 out.print_raw_cr("\"");
798 char* cmd;
799 const char* ptr = OnError;
800 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
801 out.print_raw ("# Executing ");
802 #if defined(LINUX)
803 out.print_raw ("/bin/sh -c ");
804 #elif defined(SOLARIS)
805 out.print_raw ("/usr/bin/sh -c ");
806 #endif
807 out.print_raw ("\"");
808 out.print_raw (cmd);
809 out.print_raw_cr("\" ...");
811 os::fork_and_exec(cmd);
812 }
814 // done with OnError
815 OnError = NULL;
816 }
818 static bool skip_bug_url = false;
819 if (!skip_bug_url) {
820 skip_bug_url = true;
822 out.print_raw_cr("#");
823 print_bug_submit_message(&out, _thread);
824 }
826 if (!UseOSErrorReporting) {
827 // os::abort() will call abort hooks, try it first.
828 static bool skip_os_abort = false;
829 if (!skip_os_abort) {
830 skip_os_abort = true;
831 os::abort();
832 }
834 // if os::abort() doesn't abort, try os::die();
835 os::die();
836 }
837 }
839 /*
840 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
841 * ensures utilities such as jmap can observe the process is a consistent state.
842 */
843 class VM_ReportJavaOutOfMemory : public VM_Operation {
844 private:
845 VMError *_err;
846 public:
847 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
848 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
849 void doit();
850 };
852 void VM_ReportJavaOutOfMemory::doit() {
853 // Don't allocate large buffer on stack
854 static char buffer[O_BUFLEN];
856 tty->print_cr("#");
857 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
858 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
860 // make heap parsability
861 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
863 char* cmd;
864 const char* ptr = OnOutOfMemoryError;
865 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
866 tty->print("# Executing ");
867 #if defined(LINUX)
868 tty->print ("/bin/sh -c ");
869 #elif defined(SOLARIS)
870 tty->print ("/usr/bin/sh -c ");
871 #endif
872 tty->print_cr("\"%s\"...", cmd);
874 os::fork_and_exec(cmd);
875 }
876 }
878 void VMError::report_java_out_of_memory() {
879 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
880 MutexLocker ml(Heap_lock);
881 VM_ReportJavaOutOfMemory op(this);
882 VMThread::execute(&op);
883 }
884 }
