1 /*
2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "compiler/compileBroker.hpp"
27 #include "gc_interface/collectedHeap.hpp"
28 #include "runtime/arguments.hpp"
29 #include "runtime/frame.inline.hpp"
30 #include "runtime/init.hpp"
31 #include "runtime/os.hpp"
32 #include "runtime/thread.hpp"
33 #include "runtime/vmThread.hpp"
34 #include "runtime/vm_operations.hpp"
35 #include "utilities/debug.hpp"
36 #include "utilities/decoder.hpp"
37 #include "utilities/defaultStream.hpp"
38 #include "utilities/errorReporter.hpp"
39 #include "utilities/top.hpp"
40 #include "utilities/vmError.hpp"
41
42 // List of environment variables that should be reported in error log file.
43 const char *env_list[] = {
44 // All platforms
45 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
46 "JAVA_COMPILER", "PATH", "USERNAME",
47
48 // Env variables that are defined on Solaris/Linux/BSD
49 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
50 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
51
52 // defined on Linux
53 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
54
55 // defined on Darwin
56 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
57 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
58 "DYLD_INSERT_LIBRARIES",
59
60 // defined on Windows
61 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
62
63 (const char *)0
64 };
65
66 // Fatal error handler for internal errors and crashes.
67 //
68 // The default behavior of fatal error handler is to print a brief message
69 // to standard out (defaultStream::output_fd()), then save detailed information
70 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
71 // threads are having troubles at the same time, only one error is reported.
72 // The thread that is reporting error will abort VM when it is done, all other
73 // threads are blocked forever inside report_and_die().
74
75 // Constructor for crashes
76 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) {
77 _thread = thread;
78 _id = sig;
79 _pc = pc;
80 _siginfo = siginfo;
81 _context = context;
82
83 _verbose = false;
84 _current_step = 0;
85 _current_step_info = NULL;
86
87 _message = NULL;
88 _detail_msg = NULL;
89 _filename = NULL;
90 _lineno = 0;
91
92 _size = 0;
93 }
94
95 // Constructor for internal errors
96 VMError::VMError(Thread* thread, const char* filename, int lineno,
97 const char* message, const char * detail_msg)
98 {
99 _thread = thread;
100 _id = internal_error; // Value that's not an OS exception/signal
101 _filename = filename;
102 _lineno = lineno;
103 _message = message;
104 _detail_msg = detail_msg;
105
106 _verbose = false;
107 _current_step = 0;
108 _current_step_info = NULL;
109
110 _pc = NULL;
111 _siginfo = NULL;
112 _context = NULL;
113
114 _size = 0;
115 }
116
117 // Constructor for OOM errors
118 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size,
119 const char* message) {
120 _thread = thread;
121 _id = oom_error; // Value that's not an OS exception/signal
122 _filename = filename;
123 _lineno = lineno;
124 _message = message;
125 _detail_msg = NULL;
126
127 _verbose = false;
128 _current_step = 0;
129 _current_step_info = NULL;
130
131 _pc = NULL;
132 _siginfo = NULL;
133 _context = NULL;
134
135 _size = size;
136 }
137
138
139 // Constructor for non-fatal errors
140 VMError::VMError(const char* message) {
141 _thread = NULL;
142 _id = internal_error; // Value that's not an OS exception/signal
143 _filename = NULL;
144 _lineno = 0;
145 _message = message;
146 _detail_msg = NULL;
147
148 _verbose = false;
149 _current_step = 0;
150 _current_step_info = NULL;
151
152 _pc = NULL;
153 _siginfo = NULL;
154 _context = NULL;
155
156 _size = 0;
157 }
158
159 // -XX:OnError=<string>, where <string> can be a list of commands, separated
160 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
161 // a single "%". Some examples:
162 //
163 // -XX:OnError="pmap %p" // show memory map
164 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger
165 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
166 // -XX:OnError="kill -9 %p" // ?#!@#
167
168 // A simple parser for -XX:OnError, usage:
169 // ptr = OnError;
170 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
171 // ... ...
172 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
173 if (ptr == NULL || *ptr == NULL) return NULL;
174
175 const char* cmd = *ptr;
176
177 // skip leading blanks or ';'
178 while (*cmd == ' ' || *cmd == ';') cmd++;
179
180 if (*cmd == '\0') return NULL;
181
182 const char * cmdend = cmd;
183 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
184
185 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
186
187 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
188 return buf;
189 }
190
191
192 static void print_bug_submit_message(outputStream *out, Thread *thread) {
193 if (out == NULL) return;
194 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
195 out->print_raw ("# ");
196 out->print_raw_cr(Arguments::java_vendor_url_bug());
197 // If the crash is in native code, encourage user to submit a bug to the
198 // provider of that code.
199 if (thread && thread->is_Java_thread() &&
200 !thread->is_hidden_from_external_view()) {
201 JavaThread* jt = (JavaThread*)thread;
202 if (jt->thread_state() == _thread_in_native) {
203 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
204 }
205 }
206 out->print_raw_cr("#");
207 }
208
209 bool VMError::coredump_status;
210 char VMError::coredump_message[O_BUFLEN];
211
212 void VMError::report_coredump_status(const char* message, bool status) {
213 coredump_status = status;
214 strncpy(coredump_message, message, sizeof(coredump_message));
215 coredump_message[sizeof(coredump_message)-1] = 0;
216 }
217
218
219 // Return a string to describe the error
220 char* VMError::error_string(char* buf, int buflen) {
221 char signame_buf[64];
222 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
223
224 if (signame) {
225 jio_snprintf(buf, buflen,
226 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
227 signame, _id, _pc,
228 os::current_process_id(), os::current_thread_id());
229 } else if (_filename != NULL && _lineno > 0) {
230 // skip directory names
231 char separator = os::file_separator()[0];
232 const char *p = strrchr(_filename, separator);
233 int n = jio_snprintf(buf, buflen,
234 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
235 p ? p + 1 : _filename, _lineno,
236 os::current_process_id(), os::current_thread_id());
237 if (n >= 0 && n < buflen && _message) {
238 if (_detail_msg) {
239 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
240 os::line_separator(), _message, _detail_msg);
241 } else {
242 jio_snprintf(buf + n, buflen - n, "%sError: %s",
243 os::line_separator(), _message);
244 }
245 }
246 } else {
247 jio_snprintf(buf, buflen,
248 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
249 _id, os::current_process_id(), os::current_thread_id());
250 }
251
252 return buf;
253 }
254
255 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
256 char* buf, int buflen, bool verbose) {
257 #ifdef ZERO
258 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
259 // StackFrameStream uses the frame anchor, which may not have
260 // been set up. This can be done at any time in Zero, however,
261 // so if it hasn't been set up then we just set it up now and
262 // clear it again when we're done.
263 bool has_last_Java_frame = jt->has_last_Java_frame();
264 if (!has_last_Java_frame)
265 jt->set_last_Java_frame();
266 st->print("Java frames:");
267
268 // If the top frame is a Shark frame and the frame anchor isn't
269 // set up then it's possible that the information in the frame
270 // is garbage: it could be from a previous decache, or it could
271 // simply have never been written. So we print a warning...
272 StackFrameStream sfs(jt);
273 if (!has_last_Java_frame && !sfs.is_done()) {
274 if (sfs.current()->zeroframe()->is_shark_frame()) {
275 st->print(" (TOP FRAME MAY BE JUNK)");
276 }
277 }
278 st->cr();
279
280 // Print the frames
281 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
282 sfs.current()->zero_print_on_error(i, st, buf, buflen);
283 st->cr();
284 }
285
286 // Reset the frame anchor if necessary
287 if (!has_last_Java_frame)
288 jt->reset_last_Java_frame();
289 }
290 #else
291 if (jt->has_last_Java_frame()) {
292 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
293 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
294 sfs.current()->print_on_error(st, buf, buflen, verbose);
295 st->cr();
296 }
297 }
298 #endif // ZERO
299 }
300
301 // This is the main function to report a fatal error. Only one thread can
302 // call this function, so we don't need to worry about MT-safety. But it's
303 // possible that the error handler itself may crash or die on an internal
304 // error, for example, when the stack/heap is badly damaged. We must be
305 // able to handle recursive errors that happen inside error handler.
306 //
307 // Error reporting is done in several steps. If a crash or internal error
308 // occurred when reporting an error, the nested signal/exception handler
309 // can skip steps that are already (or partially) done. Error reporting will
310 // continue from the next step. This allows us to retrieve and print
311 // information that may be unsafe to get after a fatal error. If it happens,
312 // you may find nested report_and_die() frames when you look at the stack
313 // in a debugger.
314 //
315 // In general, a hang in error handler is much worse than a crash or internal
316 // error, as it's harder to recover from a hang. Deadlock can happen if we
317 // try to grab a lock that is already owned by current thread, or if the
318 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
319 // error handler and all the functions it called should avoid grabbing any
320 // lock. An important thing to notice is that memory allocation needs a lock.
321 //
322 // We should avoid using large stack allocated buffers. Many errors happen
323 // when stack space is already low. Making things even worse is that there
324 // could be nested report_and_die() calls on stack (see above). Only one
325 // thread can report error, so large buffers are statically allocated in data
326 // segment.
327
328 void VMError::report(outputStream* st) {
329 # define BEGIN if (_current_step == 0) { _current_step = 1;
330 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
331 # define END }
332
333 // don't allocate large buffer on stack
334 static char buf[O_BUFLEN];
335
336 BEGIN
337
338 STEP(10, "(printing fatal error message)")
339
340 st->print_cr("#");
341 if (should_report_bug(_id)) {
342 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
343 } else {
344 st->print_cr("# There is insufficient memory for the Java "
345 "Runtime Environment to continue.");
346 }
347
348 STEP(15, "(printing type of error)")
349
350 switch(_id) {
351 case oom_error:
352 if (_size) {
353 st->print("# Native memory allocation (malloc) failed to allocate ");
354 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
355 st->print(buf);
356 st->print(" bytes");
357 if (_message != NULL) {
358 st->print(" for ");
359 st->print(_message);
360 }
361 st->cr();
362 } else {
363 if (_message != NULL)
364 st->print("# ");
365 st->print_cr(_message);
366 }
367 // In error file give some solutions
368 if (_verbose) {
369 st->print_cr("# Possible reasons:");
370 st->print_cr("# The system is out of physical RAM or swap space");
371 st->print_cr("# In 32 bit mode, the process size limit was hit");
372 st->print_cr("# Possible solutions:");
373 st->print_cr("# Reduce memory load on the system");
374 st->print_cr("# Increase physical memory or swap space");
375 st->print_cr("# Check if swap backing store is full");
376 st->print_cr("# Use 64 bit Java on a 64 bit OS");
377 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
378 st->print_cr("# Decrease number of Java threads");
379 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
380 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
381 st->print_cr("# This output file may be truncated or incomplete.");
382 } else {
383 return; // that's enough for the screen
384 }
385 break;
386 case internal_error:
387 default:
388 break;
389 }
390
391 STEP(20, "(printing exception/signal name)")
392
393 st->print_cr("#");
394 st->print("# ");
395 // Is it an OS exception/signal?
396 if (os::exception_name(_id, buf, sizeof(buf))) {
397 st->print("%s", buf);
398 st->print(" (0x%x)", _id); // signal number
399 st->print(" at pc=" PTR_FORMAT, _pc);
400 } else {
401 if (should_report_bug(_id)) {
402 st->print("Internal Error");
403 } else {
404 st->print("Out of Memory Error");
405 }
406 if (_filename != NULL && _lineno > 0) {
407 #ifdef PRODUCT
408 // In product mode chop off pathname?
409 char separator = os::file_separator()[0];
410 const char *p = strrchr(_filename, separator);
411 const char *file = p ? p+1 : _filename;
412 #else
413 const char *file = _filename;
414 #endif
415 size_t len = strlen(file);
416 size_t buflen = sizeof(buf);
417
418 strncpy(buf, file, buflen);
419 if (len + 10 < buflen) {
420 sprintf(buf + len, ":%d", _lineno);
421 }
422 st->print(" (%s)", buf);
423 } else {
424 st->print(" (0x%x)", _id);
425 }
426 }
427
428 STEP(30, "(printing current thread and pid)")
429
430 // process id, thread id
431 st->print(", pid=%d", os::current_process_id());
432 st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
433 st->cr();
434
435 STEP(40, "(printing error message)")
436
437 if (should_report_bug(_id)) { // already printed the message.
438 // error message
439 if (_detail_msg) {
440 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
441 } else if (_message) {
442 st->print_cr("# Error: %s", _message);
443 }
444 }
445
446 STEP(50, "(printing Java version string)")
447
448 // VM version
449 st->print_cr("#");
450 JDK_Version::current().to_string(buf, sizeof(buf));
451 st->print_cr("# JRE version: %s", buf);
452 st->print_cr("# Java VM: %s (%s %s %s %s)",
453 Abstract_VM_Version::vm_name(),
454 Abstract_VM_Version::vm_release(),
455 Abstract_VM_Version::vm_info_string(),
456 Abstract_VM_Version::vm_platform_string(),
457 UseCompressedOops ? "compressed oops" : ""
458 );
459
460 STEP(60, "(printing problematic frame)")
461
462 // Print current frame if we have a context (i.e. it's a crash)
463 if (_context) {
464 st->print_cr("# Problematic frame:");
465 st->print("# ");
466 frame fr = os::fetch_frame_from_context(_context);
467 fr.print_on_error(st, buf, sizeof(buf));
468 st->cr();
469 st->print_cr("#");
470 }
471 STEP(63, "(printing core file information)")
472 st->print("# ");
473 if (coredump_status) {
474 st->print("Core dump written. Default location: %s", coredump_message);
475 } else {
476 st->print("Failed to write core dump. %s", coredump_message);
477 }
478 st->print_cr("");
479 st->print_cr("#");
480
481 STEP(65, "(printing bug submit message)")
482
483 if (should_report_bug(_id) && _verbose) {
484 print_bug_submit_message(st, _thread);
485 }
486
487 STEP(70, "(printing thread)" )
488
489 if (_verbose) {
490 st->cr();
491 st->print_cr("--------------- T H R E A D ---------------");
492 st->cr();
493 }
494
495 STEP(80, "(printing current thread)" )
496
497 // current thread
498 if (_verbose) {
499 if (_thread) {
500 st->print("Current thread (" PTR_FORMAT "): ", _thread);
501 _thread->print_on_error(st, buf, sizeof(buf));
502 st->cr();
503 } else {
504 st->print_cr("Current thread is native thread");
505 }
506 st->cr();
507 }
508
509 STEP(90, "(printing siginfo)" )
510
511 // signal no, signal code, address that caused the fault
512 if (_verbose && _siginfo) {
513 os::print_siginfo(st, _siginfo);
514 st->cr();
515 }
516
517 STEP(100, "(printing registers, top of stack, instructions near pc)")
518
519 // registers, top of stack, instructions near pc
520 if (_verbose && _context) {
521 os::print_context(st, _context);
522 st->cr();
523 }
524
525 STEP(105, "(printing register info)")
526
527 // decode register contents if possible
528 if (_verbose && _context && Universe::is_fully_initialized()) {
529 os::print_register_info(st, _context);
530 st->cr();
531 }
532
533 STEP(110, "(printing stack bounds)" )
534
535 if (_verbose) {
536 st->print("Stack: ");
537
538 address stack_top;
539 size_t stack_size;
540
541 if (_thread) {
542 stack_top = _thread->stack_base();
543 stack_size = _thread->stack_size();
544 } else {
545 stack_top = os::current_stack_base();
546 stack_size = os::current_stack_size();
547 }
548
549 address stack_bottom = stack_top - stack_size;
550 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
551
552 frame fr = _context ? os::fetch_frame_from_context(_context)
553 : os::current_frame();
554
555 if (fr.sp()) {
556 st->print(", sp=" PTR_FORMAT, fr.sp());
557 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
558 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
559 }
560
561 st->cr();
562 }
563
564 STEP(120, "(printing native stack)" )
565
566 if (_verbose) {
567 frame fr = _context ? os::fetch_frame_from_context(_context)
568 : os::current_frame();
569
570 // see if it's a valid frame
571 if (fr.pc()) {
572 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
573
574 int count = 0;
575 while (count++ < StackPrintLimit) {
576 fr.print_on_error(st, buf, sizeof(buf));
577 st->cr();
578 if (os::is_first_C_frame(&fr)) break;
579 fr = os::get_sender_for_C_frame(&fr);
580 }
581
582 if (count > StackPrintLimit) {
583 st->print_cr("...<more frames>...");
584 }
585
586 st->cr();
587 }
588 }
589
590 STEP(130, "(printing Java stack)" )
591
592 if (_verbose && _thread && _thread->is_Java_thread()) {
593 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
594 }
595
596 STEP(135, "(printing target Java thread stack)" )
597
598 // printing Java thread stack trace if it is involved in GC crash
599 if (_verbose && _thread && (_thread->is_Named_thread())) {
600 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
601 if (jt != NULL) {
602 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
603 print_stack_trace(st, jt, buf, sizeof(buf), true);
604 }
605 }
606
607 STEP(140, "(printing VM operation)" )
608
609 if (_verbose && _thread && _thread->is_VM_thread()) {
610 VMThread* t = (VMThread*)_thread;
611 VM_Operation* op = t->vm_operation();
612 if (op) {
613 op->print_on_error(st);
614 st->cr();
615 st->cr();
616 }
617 }
618
619 STEP(150, "(printing current compile task)" )
620
621 if (_verbose && _thread && _thread->is_Compiler_thread()) {
622 CompilerThread* t = (CompilerThread*)_thread;
623 if (t->task()) {
624 st->cr();
625 st->print_cr("Current CompileTask:");
626 t->task()->print_line_on_error(st, buf, sizeof(buf));
627 st->cr();
628 }
629 }
630
631 STEP(160, "(printing process)" )
632
633 if (_verbose) {
634 st->cr();
635 st->print_cr("--------------- P R O C E S S ---------------");
636 st->cr();
637 }
638
639 STEP(170, "(printing all threads)" )
640
641 // all threads
642 if (_verbose && _thread) {
643 Threads::print_on_error(st, _thread, buf, sizeof(buf));
644 st->cr();
645 }
646
647 STEP(175, "(printing VM state)" )
648
649 if (_verbose) {
650 // Safepoint state
651 st->print("VM state:");
652
653 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
654 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
655 else st->print("not at safepoint");
656
657 // Also see if error occurred during initialization or shutdown
658 if (!Universe::is_fully_initialized()) {
659 st->print(" (not fully initialized)");
660 } else if (VM_Exit::vm_exited()) {
661 st->print(" (shutting down)");
662 } else {
663 st->print(" (normal execution)");
664 }
665 st->cr();
666 st->cr();
667 }
668
669 STEP(180, "(printing owned locks on error)" )
670
671 // mutexes/monitors that currently have an owner
672 if (_verbose) {
673 print_owned_locks_on_error(st);
674 st->cr();
675 }
676
677 STEP(190, "(printing heap information)" )
678
679 if (_verbose && Universe::is_fully_initialized()) {
680 // print heap information before vm abort
681 Universe::print_on(st);
682 st->cr();
683 }
684
685 STEP(195, "(printing code cache information)" )
686
687 if (_verbose && Universe::is_fully_initialized()) {
688 // print code cache information before vm abort
689 CodeCache::print_bounds(st);
690 st->cr();
691 }
692
693 STEP(200, "(printing dynamic libraries)" )
694
695 if (_verbose) {
696 // dynamic libraries, or memory map
697 os::print_dll_info(st);
698 st->cr();
699 }
700
701 STEP(210, "(printing VM options)" )
702
703 if (_verbose) {
704 // VM options
705 Arguments::print_on(st);
706 st->cr();
707 }
708
709 STEP(220, "(printing environment variables)" )
710
711 if (_verbose) {
712 os::print_environment_variables(st, env_list, buf, sizeof(buf));
713 st->cr();
714 }
715
716 STEP(225, "(printing signal handlers)" )
717
718 if (_verbose) {
719 os::print_signal_handlers(st, buf, sizeof(buf));
720 st->cr();
721 }
722
723 STEP(230, "" )
724
725 if (_verbose) {
726 st->cr();
727 st->print_cr("--------------- S Y S T E M ---------------");
728 st->cr();
729 }
730
731 STEP(240, "(printing OS information)" )
732
733 if (_verbose) {
734 os::print_os_info(st);
735 st->cr();
736 }
737
738 STEP(250, "(printing CPU info)" )
739 if (_verbose) {
740 os::print_cpu_info(st);
741 st->cr();
742 }
743
744 STEP(260, "(printing memory info)" )
745
746 if (_verbose) {
747 os::print_memory_info(st);
748 st->cr();
749 }
750
751 STEP(270, "(printing internal vm info)" )
752
753 if (_verbose) {
754 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
755 st->cr();
756 }
757
758 STEP(280, "(printing date and time)" )
759
760 if (_verbose) {
761 os::print_date_and_time(st);
762 st->cr();
763 }
764
765 END
766
767 # undef BEGIN
768 # undef STEP
769 # undef END
770 }
771
772 VMError* volatile VMError::first_error = NULL;
773 volatile jlong VMError::first_error_tid = -1;
774
775 void VMError::report_and_die() {
776 // Don't allocate large buffer on stack
777 static char buffer[O_BUFLEN];
778
779 // An error could happen before tty is initialized or after it has been
780 // destroyed. Here we use a very simple unbuffered fdStream for printing.
781 // Only out.print_raw() and out.print_raw_cr() should be used, as other
782 // printing methods need to allocate large buffer on stack. To format a
783 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
784 static fdStream out(defaultStream::output_fd());
785
786 // How many errors occurred in error handler when reporting first_error.
787 static int recursive_error_count;
788
789 // We will first print a brief message to standard out (verbose = false),
790 // then save detailed information in log file (verbose = true).
791 static bool out_done = false; // done printing to standard out
792 static bool log_done = false; // done saving error log
793 static bool transmit_report_done = false; // done error reporting
794 static fdStream log; // error log
795
796 if (SuppressFatalErrorMessage) {
797 os::abort();
798 }
799 jlong mytid = os::current_thread_id();
800 if (first_error == NULL &&
801 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
802
803 // first time
804 first_error_tid = mytid;
805 set_error_reported();
806
807 if (ShowMessageBoxOnError || PauseAtExit) {
808 show_message_box(buffer, sizeof(buffer));
809
810 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
811 // WatcherThread can kill JVM if the error handler hangs.
812 ShowMessageBoxOnError = false;
813 }
814
815 // Write a minidump on Windows, check core dump limits on Linux/Solaris
816 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer));
817
818 // reset signal handlers or exception filter; make sure recursive crashes
819 // are handled properly.
820 reset_signal_handlers();
821
822 } else {
823 // If UseOsErrorReporting we call this for each level of the call stack
824 // while searching for the exception handler. Only the first level needs
825 // to be reported.
826 if (UseOSErrorReporting && log_done) return;
827
828 // This is not the first error, see if it happened in a different thread
829 // or in the same thread during error reporting.
830 if (first_error_tid != mytid) {
831 jio_snprintf(buffer, sizeof(buffer),
832 "[thread " INT64_FORMAT " also had an error]",
833 mytid);
834 out.print_raw_cr(buffer);
835
836 // error reporting is not MT-safe, block current thread
837 os::infinite_sleep();
838
839 } else {
840 if (recursive_error_count++ > 30) {
841 out.print_raw_cr("[Too many errors, abort]");
842 os::die();
843 }
844
845 jio_snprintf(buffer, sizeof(buffer),
846 "[error occurred during error reporting %s, id 0x%x]",
847 first_error ? first_error->_current_step_info : "",
848 _id);
849 if (log.is_open()) {
850 log.cr();
851 log.print_raw_cr(buffer);
852 log.cr();
853 } else {
854 out.cr();
855 out.print_raw_cr(buffer);
856 out.cr();
857 }
858 }
859 }
860
861 // print to screen
862 if (!out_done) {
863 first_error->_verbose = false;
864
865 staticBufferStream sbs(buffer, sizeof(buffer), &out);
866 first_error->report(&sbs);
867
868 out_done = true;
869
870 first_error->_current_step = 0; // reset current_step
871 first_error->_current_step_info = ""; // reset current_step string
872 }
873
874 // print to error log file
875 if (!log_done) {
876 first_error->_verbose = true;
877
878 // see if log file is already open
879 if (!log.is_open()) {
880 // open log file
881 int fd = -1;
882
883 if (ErrorFile != NULL) {
884 bool copy_ok =
885 Arguments::copy_expand_pid(ErrorFile, strlen(ErrorFile), buffer, sizeof(buffer));
886 if (copy_ok) {
887 fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
888 }
889 }
890
891 if (fd == -1) {
892 const char *cwd = os::get_current_directory(buffer, sizeof(buffer));
893 size_t len = strlen(cwd);
894 // either user didn't specify, or the user's location failed,
895 // so use the default name in the current directory
896 jio_snprintf(&buffer[len], sizeof(buffer)-len, "%shs_err_pid%u.log",
897 os::file_separator(), os::current_process_id());
898 fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
899 }
900
901 if (fd == -1) {
902 const char * tmpdir = os::get_temp_directory();
903 // try temp directory if it exists.
904 if (tmpdir != NULL && tmpdir[0] != '\0') {
905 jio_snprintf(buffer, sizeof(buffer), "%s%shs_err_pid%u.log",
906 tmpdir, os::file_separator(), os::current_process_id());
907 fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
908 }
909 }
910
911 if (fd != -1) {
912 out.print_raw("# An error report file with more information is saved as:\n# ");
913 out.print_raw_cr(buffer);
914 os::set_error_file(buffer);
915
916 log.set_fd(fd);
917 } else {
918 out.print_raw_cr("# Can not save log file, dump to screen..");
919 log.set_fd(defaultStream::output_fd());
920 /* Error reporting currently needs dumpfile.
921 * Maybe implement direct streaming in the future.*/
922 transmit_report_done = true;
923 }
924 }
925
926 staticBufferStream sbs(buffer, O_BUFLEN, &log);
927 first_error->report(&sbs);
928 first_error->_current_step = 0; // reset current_step
929 first_error->_current_step_info = ""; // reset current_step string
930
931 // Run error reporting to determine whether or not to report the crash.
932 if (!transmit_report_done && should_report_bug(first_error->_id)) {
933 transmit_report_done = true;
934 FILE* hs_err = ::fdopen(log.fd(), "r");
935 if (NULL != hs_err) {
936 ErrorReporter er;
937 er.call(hs_err, buffer, O_BUFLEN);
938 }
939 }
940
941 if (log.fd() != defaultStream::output_fd()) {
942 close(log.fd());
943 }
944
945 log.set_fd(-1);
946 log_done = true;
947 }
948
949
950 static bool skip_OnError = false;
951 if (!skip_OnError && OnError && OnError[0]) {
952 skip_OnError = true;
953
954 out.print_raw_cr("#");
955 out.print_raw ("# -XX:OnError=\"");
956 out.print_raw (OnError);
957 out.print_raw_cr("\"");
958
959 char* cmd;
960 const char* ptr = OnError;
961 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
962 out.print_raw ("# Executing ");
963 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
964 out.print_raw ("/bin/sh -c ");
965 #elif defined(SOLARIS)
966 out.print_raw ("/usr/bin/sh -c ");
967 #endif
968 out.print_raw ("\"");
969 out.print_raw (cmd);
970 out.print_raw_cr("\" ...");
971
972 os::fork_and_exec(cmd);
973 }
974
975 // done with OnError
976 OnError = NULL;
977 }
978
979 static bool skip_bug_url = !should_report_bug(first_error->_id);
980 if (!skip_bug_url) {
981 skip_bug_url = true;
982
983 out.print_raw_cr("#");
984 print_bug_submit_message(&out, _thread);
985 }
986
987 if (!UseOSErrorReporting) {
988 // os::abort() will call abort hooks, try it first.
989 static bool skip_os_abort = false;
990 if (!skip_os_abort) {
991 skip_os_abort = true;
992 bool dump_core = should_report_bug(first_error->_id);
993 os::abort(dump_core);
994 }
995
996 // if os::abort() doesn't abort, try os::die();
997 os::die();
998 }
999 }
1000
1001 /*
1002 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1003 * ensures utilities such as jmap can observe the process is a consistent state.
1004 */
1005 class VM_ReportJavaOutOfMemory : public VM_Operation {
1006 private:
1007 VMError *_err;
1008 public:
1009 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
1010 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1011 void doit();
1012 };
1013
1014 void VM_ReportJavaOutOfMemory::doit() {
1015 // Don't allocate large buffer on stack
1016 static char buffer[O_BUFLEN];
1017
1018 tty->print_cr("#");
1019 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
1020 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1021
1022 // make heap parsability
1023 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1024
1025 char* cmd;
1026 const char* ptr = OnOutOfMemoryError;
1027 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1028 tty->print("# Executing ");
1029 #if defined(LINUX)
1030 tty->print ("/bin/sh -c ");
1031 #elif defined(SOLARIS)
1032 tty->print ("/usr/bin/sh -c ");
1033 #endif
1034 tty->print_cr("\"%s\"...", cmd);
1035
1036 os::fork_and_exec(cmd);
1037 }
1038 }
1039
1040 void VMError::report_java_out_of_memory() {
1041 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1042 MutexLocker ml(Heap_lock);
1043 VM_ReportJavaOutOfMemory op(this);
1044 VMThread::execute(&op);
1045 }
1046 }