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