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.
29 const 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
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;
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
77 VMError::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
99 VMError::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
121 VMError::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 // ... ...
153 static 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
173 static 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
192 char* 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
227 void 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
300 void 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
706 VMError* volatile VMError::first_error = NULL;
707 volatile jlong VMError::first_error_tid = -1;
708
709 void 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 */
919 class 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
928 void 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
954 void 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 }