1 /*
2 * Copyright (c) 2003, 2014, 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 <fcntl.h>
26 #include "precompiled.hpp"
27 #include "code/codeCache.hpp"
28 #include "compiler/compileBroker.hpp"
29 #include "gc_interface/collectedHeap.hpp"
30 #include "prims/whitebox.hpp"
31 #include "runtime/arguments.hpp"
32 #include "runtime/atomic.inline.hpp"
33 #include "runtime/frame.inline.hpp"
34 #include "runtime/init.hpp"
35 #include "runtime/os.hpp"
36 #include "runtime/thread.inline.hpp"
37 #include "runtime/vmThread.hpp"
38 #include "runtime/vm_operations.hpp"
39 #include "services/memTracker.hpp"
40 #include "utilities/debug.hpp"
41 #include "utilities/decoder.hpp"
42 #include "utilities/defaultStream.hpp"
43 #include "utilities/errorReporter.hpp"
44 #include "utilities/events.hpp"
45 #include "utilities/top.hpp"
46 #include "utilities/vmError.hpp"
47
48 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
49
50 // List of environment variables that should be reported in error log file.
51 const char *env_list[] = {
52 // All platforms
53 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
54 "JAVA_COMPILER", "PATH", "USERNAME",
55
56 // Env variables that are defined on Solaris/Linux/BSD
57 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
58 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
59
60 // defined on Linux
61 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
62
63 // defined on Darwin
64 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
65 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
66 "DYLD_INSERT_LIBRARIES",
67
68 // defined on Windows
69 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
70
71 (const char *)0
72 };
73
74 // Fatal error handler for internal errors and crashes.
75 //
76 // The default behavior of fatal error handler is to print a brief message
77 // to standard out (defaultStream::output_fd()), then save detailed information
78 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
79 // threads are having troubles at the same time, only one error is reported.
80 // The thread that is reporting error will abort VM when it is done, all other
81 // threads are blocked forever inside report_and_die().
82
83 // Constructor for crashes
84 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) {
85 _thread = thread;
86 _id = sig;
87 _pc = pc;
88 _siginfo = siginfo;
89 _context = context;
90
91 _verbose = false;
92 _current_step = 0;
93 _current_step_info = NULL;
94
95 _message = NULL;
96 _detail_msg = NULL;
97 _filename = NULL;
98 _lineno = 0;
99
100 _size = 0;
101 }
102
103 // Constructor for internal errors
104 VMError::VMError(Thread* thread, const char* filename, int lineno,
105 const char* message, const char * detail_msg)
106 {
107 _thread = thread;
108 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
109 _filename = filename;
110 _lineno = lineno;
111 _message = message;
112 _detail_msg = detail_msg;
113
114 _verbose = false;
115 _current_step = 0;
116 _current_step_info = NULL;
117
118 _pc = NULL;
119 _siginfo = NULL;
120 _context = NULL;
121
122 _size = 0;
123 }
124
125 // Constructor for OOM errors
126 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size,
127 VMErrorType vm_err_type, const char* message) {
128 _thread = thread;
129 _id = vm_err_type; // Value that's not an OS exception/signal
130 _filename = filename;
131 _lineno = lineno;
132 _message = message;
133 _detail_msg = NULL;
134
135 _verbose = false;
136 _current_step = 0;
137 _current_step_info = NULL;
138
139 _pc = NULL;
140 _siginfo = NULL;
141 _context = NULL;
142
143 _size = size;
144 }
145
146
147 // Constructor for non-fatal errors
148 VMError::VMError(const char* message) {
149 _thread = NULL;
150 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
151 _filename = NULL;
152 _lineno = 0;
153 _message = message;
154 _detail_msg = NULL;
155
156 _verbose = false;
157 _current_step = 0;
158 _current_step_info = NULL;
159
160 _pc = NULL;
161 _siginfo = NULL;
162 _context = NULL;
163
164 _size = 0;
165 }
166
167 // -XX:OnError=<string>, where <string> can be a list of commands, separated
168 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
169 // a single "%". Some examples:
170 //
171 // -XX:OnError="pmap %p" // show memory map
172 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger
173 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
174 // -XX:OnError="kill -9 %p" // ?#!@#
175
176 // A simple parser for -XX:OnError, usage:
177 // ptr = OnError;
178 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
179 // ... ...
180 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
181 if (ptr == NULL || *ptr == NULL) return NULL;
182
183 const char* cmd = *ptr;
184
185 // skip leading blanks or ';'
186 while (*cmd == ' ' || *cmd == ';') cmd++;
187
188 if (*cmd == '\0') return NULL;
189
190 const char * cmdend = cmd;
191 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
192
193 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
194
195 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
196 return buf;
197 }
198
199
200 static void print_bug_submit_message(outputStream *out, Thread *thread) {
201 if (out == NULL) return;
202 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
203 out->print_raw ("# ");
204 out->print_raw_cr(Arguments::java_vendor_url_bug());
205 // If the crash is in native code, encourage user to submit a bug to the
206 // provider of that code.
207 if (thread && thread->is_Java_thread() &&
208 !thread->is_hidden_from_external_view()) {
209 JavaThread* jt = (JavaThread*)thread;
210 if (jt->thread_state() == _thread_in_native) {
211 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
212 }
213 }
214 out->print_raw_cr("#");
215 }
216
217 bool VMError::coredump_status;
218 char VMError::coredump_message[O_BUFLEN];
219
220 void VMError::report_coredump_status(const char* message, bool status) {
221 coredump_status = status;
222 strncpy(coredump_message, message, sizeof(coredump_message));
223 coredump_message[sizeof(coredump_message)-1] = 0;
224 }
225
226
227 // Return a string to describe the error
228 char* VMError::error_string(char* buf, int buflen) {
229 char signame_buf[64];
230 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
231
232 if (signame) {
233 jio_snprintf(buf, buflen,
234 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
235 signame, _id, _pc,
236 os::current_process_id(), os::current_thread_id());
237 } else if (_filename != NULL && _lineno > 0) {
238 // skip directory names
239 char separator = os::file_separator()[0];
240 const char *p = strrchr(_filename, separator);
241 int n = jio_snprintf(buf, buflen,
242 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
243 p ? p + 1 : _filename, _lineno,
244 os::current_process_id(), os::current_thread_id());
245 if (n >= 0 && n < buflen && _message) {
246 if (_detail_msg) {
247 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
248 os::line_separator(), _message, _detail_msg);
249 } else {
250 jio_snprintf(buf + n, buflen - n, "%sError: %s",
251 os::line_separator(), _message);
252 }
253 }
254 } else {
255 jio_snprintf(buf, buflen,
256 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
257 _id, os::current_process_id(), os::current_thread_id());
258 }
259
260 return buf;
261 }
262
263 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
264 char* buf, int buflen, bool verbose) {
265 #ifdef ZERO
266 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
267 // StackFrameStream uses the frame anchor, which may not have
268 // been set up. This can be done at any time in Zero, however,
269 // so if it hasn't been set up then we just set it up now and
270 // clear it again when we're done.
271 bool has_last_Java_frame = jt->has_last_Java_frame();
272 if (!has_last_Java_frame)
273 jt->set_last_Java_frame();
274 st->print("Java frames:");
275
276 // If the top frame is a Shark frame and the frame anchor isn't
277 // set up then it's possible that the information in the frame
278 // is garbage: it could be from a previous decache, or it could
279 // simply have never been written. So we print a warning...
280 StackFrameStream sfs(jt);
281 if (!has_last_Java_frame && !sfs.is_done()) {
282 if (sfs.current()->zeroframe()->is_shark_frame()) {
283 st->print(" (TOP FRAME MAY BE JUNK)");
284 }
285 }
286 st->cr();
287
288 // Print the frames
289 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
290 sfs.current()->zero_print_on_error(i, st, buf, buflen);
291 st->cr();
292 }
293
294 // Reset the frame anchor if necessary
295 if (!has_last_Java_frame)
296 jt->reset_last_Java_frame();
297 }
298 #else
299 if (jt->has_last_Java_frame()) {
300 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
301 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
302 sfs.current()->print_on_error(st, buf, buflen, verbose);
303 st->cr();
304 }
305 }
306 #endif // ZERO
307 }
308
309 // This is the main function to report a fatal error. Only one thread can
310 // call this function, so we don't need to worry about MT-safety. But it's
311 // possible that the error handler itself may crash or die on an internal
312 // error, for example, when the stack/heap is badly damaged. We must be
313 // able to handle recursive errors that happen inside error handler.
314 //
315 // Error reporting is done in several steps. If a crash or internal error
316 // occurred when reporting an error, the nested signal/exception handler
317 // can skip steps that are already (or partially) done. Error reporting will
318 // continue from the next step. This allows us to retrieve and print
319 // information that may be unsafe to get after a fatal error. If it happens,
320 // you may find nested report_and_die() frames when you look at the stack
321 // in a debugger.
322 //
323 // In general, a hang in error handler is much worse than a crash or internal
324 // error, as it's harder to recover from a hang. Deadlock can happen if we
325 // try to grab a lock that is already owned by current thread, or if the
326 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
327 // error handler and all the functions it called should avoid grabbing any
328 // lock. An important thing to notice is that memory allocation needs a lock.
329 //
330 // We should avoid using large stack allocated buffers. Many errors happen
331 // when stack space is already low. Making things even worse is that there
332 // could be nested report_and_die() calls on stack (see above). Only one
333 // thread can report error, so large buffers are statically allocated in data
334 // segment.
335
336 void VMError::report(outputStream* st) {
337 # define BEGIN if (_current_step == 0) { _current_step = 1;
338 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
339 # define END }
340
341 // don't allocate large buffer on stack
342 static char buf[O_BUFLEN];
343
344 BEGIN
345
346 STEP(10, "(printing fatal error message)")
347
348 st->print_cr("#");
349 if (should_report_bug(_id)) {
350 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
351 } else {
352 st->print_cr("# There is insufficient memory for the Java "
353 "Runtime Environment to continue.");
354 }
355
356 #ifndef PRODUCT
357 // Error handler self tests
358
359 // test secondary error handling. Test it twice, to test that resetting
360 // error handler after a secondary crash works.
361 STEP(11, "(test secondary crash 1)")
362 if (_verbose && TestCrashInErrorHandler != 0) {
363 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...",
364 TestCrashInErrorHandler);
365 controlled_crash(TestCrashInErrorHandler);
366 }
367
368 STEP(12, "(test secondary crash 2)")
369 if (_verbose && TestCrashInErrorHandler != 0) {
370 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...",
371 TestCrashInErrorHandler);
372 controlled_crash(TestCrashInErrorHandler);
373 }
374
375 STEP(13, "(test safefetch in error handler)")
376 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
377 // to test that resetting the signal handler works correctly.
378 if (_verbose && TestSafeFetchInErrorHandler) {
379 st->print_cr("Will test SafeFetch...");
380 if (CanUseSafeFetch32()) {
381 int* const invalid_pointer = (int*) get_segfault_address();
382 const int x = 0x76543210;
383 int i1 = SafeFetch32(invalid_pointer, x);
384 int i2 = SafeFetch32(invalid_pointer, x);
385 if (i1 == x && i2 == x) {
386 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
387 } else {
388 st->print_cr("??");
389 }
390 } else {
391 st->print_cr("not possible; skipped.");
392 }
393 }
394 #endif // PRODUCT
395
396 STEP(15, "(printing type of error)")
397
398 switch(_id) {
399 case OOM_MALLOC_ERROR:
400 case OOM_MMAP_ERROR:
401 if (_size) {
402 st->print("# Native memory allocation ");
403 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
404 "(mmap) failed to map ");
405 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
406 st->print("%s", buf);
407 st->print(" bytes");
408 if (_message != NULL) {
409 st->print(" for ");
410 st->print("%s", _message);
411 }
412 st->cr();
413 } else {
414 if (_message != NULL)
415 st->print("# ");
416 st->print_cr("%s", _message);
417 }
418 // In error file give some solutions
419 if (_verbose) {
420 st->print_cr("# Possible reasons:");
421 st->print_cr("# The system is out of physical RAM or swap space");
422 st->print_cr("# In 32 bit mode, the process size limit was hit");
423 st->print_cr("# Possible solutions:");
424 st->print_cr("# Reduce memory load on the system");
425 st->print_cr("# Increase physical memory or swap space");
426 st->print_cr("# Check if swap backing store is full");
427 st->print_cr("# Use 64 bit Java on a 64 bit OS");
428 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
429 st->print_cr("# Decrease number of Java threads");
430 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
431 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
432 st->print_cr("# This output file may be truncated or incomplete.");
433 } else {
434 return; // that's enough for the screen
435 }
436 break;
437 case INTERNAL_ERROR:
438 default:
439 break;
440 }
441
442 STEP(20, "(printing exception/signal name)")
443
444 st->print_cr("#");
445 st->print("# ");
446 // Is it an OS exception/signal?
447 if (os::exception_name(_id, buf, sizeof(buf))) {
448 st->print("%s", buf);
449 st->print(" (0x%x)", _id); // signal number
450 st->print(" at pc=" PTR_FORMAT, _pc);
451 } else {
452 if (should_report_bug(_id)) {
453 st->print("Internal Error");
454 } else {
455 st->print("Out of Memory Error");
456 }
457 if (_filename != NULL && _lineno > 0) {
458 #ifdef PRODUCT
459 // In product mode chop off pathname?
460 char separator = os::file_separator()[0];
461 const char *p = strrchr(_filename, separator);
462 const char *file = p ? p+1 : _filename;
463 #else
464 const char *file = _filename;
465 #endif
466 size_t len = strlen(file);
467 size_t buflen = sizeof(buf);
468
469 strncpy(buf, file, buflen);
470 if (len + 10 < buflen) {
471 sprintf(buf + len, ":%d", _lineno);
472 }
473 st->print(" (%s)", buf);
474 } else {
475 st->print(" (0x%x)", _id);
476 }
477 }
478
479 STEP(30, "(printing current thread and pid)")
480
481 // process id, thread id
482 st->print(", pid=%d", os::current_process_id());
483 st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
484 st->cr();
485
486 STEP(40, "(printing error message)")
487
488 if (should_report_bug(_id)) { // already printed the message.
489 // error message
490 if (_detail_msg) {
491 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
492 } else if (_message) {
493 st->print_cr("# Error: %s", _message);
494 }
495 }
496
497 STEP(50, "(printing Java version string)")
498
499 // VM version
500 st->print_cr("#");
501 JDK_Version::current().to_string(buf, sizeof(buf));
502 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
503 JDK_Version::runtime_name() : "";
504 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
505 JDK_Version::runtime_version() : "";
506 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version);
507 st->print_cr("# Java VM: %s (%s %s %s %s)",
508 Abstract_VM_Version::vm_name(),
509 Abstract_VM_Version::vm_release(),
510 Abstract_VM_Version::vm_info_string(),
511 Abstract_VM_Version::vm_platform_string(),
512 UseCompressedOops ? "compressed oops" : ""
513 );
514
515 STEP(60, "(printing problematic frame)")
516
517 // Print current frame if we have a context (i.e. it's a crash)
518 if (_context) {
519 st->print_cr("# Problematic frame:");
520 st->print("# ");
521 frame fr = os::fetch_frame_from_context(_context);
522 fr.print_on_error(st, buf, sizeof(buf));
523 st->cr();
524 st->print_cr("#");
525 }
526 STEP(63, "(printing core file information)")
527 st->print("# ");
528 if (coredump_status) {
529 st->print("Core dump written. Default location: %s", coredump_message);
530 } else {
531 st->print("Failed to write core dump. %s", coredump_message);
532 }
533 st->cr();
534 st->print_cr("#");
535
536 STEP(65, "(printing bug submit message)")
537
538 if (should_report_bug(_id) && _verbose) {
539 print_bug_submit_message(st, _thread);
540 }
541
542 STEP(70, "(printing thread)" )
543
544 if (_verbose) {
545 st->cr();
546 st->print_cr("--------------- T H R E A D ---------------");
547 st->cr();
548 }
549
550 STEP(80, "(printing current thread)" )
551
552 // current thread
553 if (_verbose) {
554 if (_thread) {
555 st->print("Current thread (" PTR_FORMAT "): ", _thread);
556 _thread->print_on_error(st, buf, sizeof(buf));
557 st->cr();
558 } else {
559 st->print_cr("Current thread is native thread");
560 }
561 st->cr();
562 }
563
564 STEP(90, "(printing siginfo)" )
565
566 // signal no, signal code, address that caused the fault
567 if (_verbose && _siginfo) {
568 os::print_siginfo(st, _siginfo);
569 st->cr();
570 }
571
572 STEP(100, "(printing registers, top of stack, instructions near pc)")
573
574 // registers, top of stack, instructions near pc
575 if (_verbose && _context) {
576 os::print_context(st, _context);
577 st->cr();
578 }
579
580 STEP(105, "(printing register info)")
581
582 // decode register contents if possible
583 if (_verbose && _context && Universe::is_fully_initialized()) {
584 os::print_register_info(st, _context);
585 st->cr();
586 }
587
588 STEP(110, "(printing stack bounds)" )
589
590 if (_verbose) {
591 st->print("Stack: ");
592
593 address stack_top;
594 size_t stack_size;
595
596 if (_thread) {
597 stack_top = _thread->stack_base();
598 stack_size = _thread->stack_size();
599 } else {
600 stack_top = os::current_stack_base();
601 stack_size = os::current_stack_size();
602 }
603
604 address stack_bottom = stack_top - stack_size;
605 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
606
607 frame fr = _context ? os::fetch_frame_from_context(_context)
608 : os::current_frame();
609
610 if (fr.sp()) {
611 st->print(", sp=" PTR_FORMAT, fr.sp());
612 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
613 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
614 }
615
616 st->cr();
617 }
618
619 STEP(120, "(printing native stack)" )
620
621 if (_verbose) {
622 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
623 // We have printed the native stack in platform-specific code
624 // Windows/x64 needs special handling.
625 } else {
626 frame fr = _context ? os::fetch_frame_from_context(_context)
627 : os::current_frame();
628
629 print_native_stack(st, fr, _thread, buf, sizeof(buf));
630 }
631 }
632
633 STEP(130, "(printing Java stack)" )
634
635 if (_verbose && _thread && _thread->is_Java_thread()) {
636 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
637 }
638
639 STEP(135, "(printing target Java thread stack)" )
640
641 // printing Java thread stack trace if it is involved in GC crash
642 if (_verbose && _thread && (_thread->is_Named_thread())) {
643 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
644 if (jt != NULL) {
645 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
646 print_stack_trace(st, jt, buf, sizeof(buf), true);
647 }
648 }
649
650 STEP(140, "(printing VM operation)" )
651
652 if (_verbose && _thread && _thread->is_VM_thread()) {
653 VMThread* t = (VMThread*)_thread;
654 VM_Operation* op = t->vm_operation();
655 if (op) {
656 op->print_on_error(st);
657 st->cr();
658 st->cr();
659 }
660 }
661
662 STEP(150, "(printing current compile task)" )
663
664 if (_verbose && _thread && _thread->is_Compiler_thread()) {
665 CompilerThread* t = (CompilerThread*)_thread;
666 if (t->task()) {
667 st->cr();
668 st->print_cr("Current CompileTask:");
669 t->task()->print_line_on_error(st, buf, sizeof(buf));
670 st->cr();
671 }
672 }
673
674 STEP(160, "(printing process)" )
675
676 if (_verbose) {
677 st->cr();
678 st->print_cr("--------------- P R O C E S S ---------------");
679 st->cr();
680 }
681
682 STEP(170, "(printing all threads)" )
683
684 // all threads
685 if (_verbose && _thread) {
686 Threads::print_on_error(st, _thread, buf, sizeof(buf));
687 st->cr();
688 }
689
690 STEP(175, "(printing VM state)" )
691
692 if (_verbose) {
693 // Safepoint state
694 st->print("VM state:");
695
696 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
697 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
698 else st->print("not at safepoint");
699
700 // Also see if error occurred during initialization or shutdown
701 if (!Universe::is_fully_initialized()) {
702 st->print(" (not fully initialized)");
703 } else if (VM_Exit::vm_exited()) {
704 st->print(" (shutting down)");
705 } else {
706 st->print(" (normal execution)");
707 }
708 st->cr();
709 st->cr();
710 }
711
712 STEP(180, "(printing owned locks on error)" )
713
714 // mutexes/monitors that currently have an owner
715 if (_verbose) {
716 print_owned_locks_on_error(st);
717 st->cr();
718 }
719
720 STEP(190, "(printing heap information)" )
721
722 if (_verbose && Universe::is_fully_initialized()) {
723 Universe::heap()->print_on_error(st);
724 st->cr();
725
726 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
727 st->cr();
728 }
729
730 STEP(195, "(printing code cache information)" )
731
732 if (_verbose && Universe::is_fully_initialized()) {
733 // print code cache information before vm abort
734 CodeCache::print_summary(st);
735 st->cr();
736 }
737
738 STEP(200, "(printing ring buffers)" )
739
740 if (_verbose) {
741 Events::print_all(st);
742 st->cr();
743 }
744
745 STEP(205, "(printing dynamic libraries)" )
746
747 if (_verbose) {
748 // dynamic libraries, or memory map
749 os::print_dll_info(st);
750 st->cr();
751 }
752
753 STEP(210, "(printing VM options)" )
754
755 if (_verbose) {
756 // VM options
757 Arguments::print_on(st);
758 st->cr();
759 }
760
761 STEP(215, "(printing warning if internal testing API used)" )
762
763 if (WhiteBox::used()) {
764 st->print_cr("Unsupported internal testing APIs have been used.");
765 st->cr();
766 }
767
768 STEP(220, "(printing environment variables)" )
769
770 if (_verbose) {
771 os::print_environment_variables(st, env_list, buf, sizeof(buf));
772 st->cr();
773 }
774
775 STEP(225, "(printing signal handlers)" )
776
777 if (_verbose) {
778 os::print_signal_handlers(st, buf, sizeof(buf));
779 st->cr();
780 }
781
782 STEP(228, "(Native Memory Tracking)" )
783 if (_verbose) {
784 MemTracker::error_report(st);
785 }
786
787 STEP(230, "" )
788
789 if (_verbose) {
790 st->cr();
791 st->print_cr("--------------- S Y S T E M ---------------");
792 st->cr();
793 }
794
795 STEP(240, "(printing OS information)" )
796
797 if (_verbose) {
798 os::print_os_info(st);
799 st->cr();
800 }
801
802 STEP(250, "(printing CPU info)" )
803 if (_verbose) {
804 os::print_cpu_info(st);
805 st->cr();
806 }
807
808 STEP(260, "(printing memory info)" )
809
810 if (_verbose) {
811 os::print_memory_info(st);
812 st->cr();
813 }
814
815 STEP(270, "(printing internal vm info)" )
816
817 if (_verbose) {
818 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
819 st->cr();
820 }
821
822 STEP(280, "(printing date and time)" )
823
824 if (_verbose) {
825 os::print_date_and_time(st);
826 st->cr();
827 }
828
829 #ifndef PRODUCT
830 // print a defined marker to show that error handling finished correctly.
831 STEP(290, "(printing end marker)" )
832
833 if (_verbose) {
834 st->print_cr("END.");
835 }
836 #endif
837
838 END
839
840 # undef BEGIN
841 # undef STEP
842 # undef END
843 }
844
845 VMError* volatile VMError::first_error = NULL;
846 volatile jlong VMError::first_error_tid = -1;
847
848 // An error could happen before tty is initialized or after it has been
849 // destroyed. Here we use a very simple unbuffered fdStream for printing.
850 // Only out.print_raw() and out.print_raw_cr() should be used, as other
851 // printing methods need to allocate large buffer on stack. To format a
852 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
853 fdStream VMError::out(defaultStream::output_fd());
854 fdStream VMError::log; // error log used by VMError::report_and_die()
855
856 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
857 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
858 int fd = -1;
859 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
860 // the O_EXCL flag will cause the open to fail if the file exists
861 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
862 }
863 return fd;
864 }
865
866 /**
867 * Construct file name for a log file and return it's file descriptor.
868 * Name and location depends on pattern, default_pattern params and access
869 * permissions.
870 */
871 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
872 int fd = -1;
873
874 // If possible, use specified pattern to construct log file name
875 if (pattern != NULL) {
876 fd = expand_and_open(pattern, buf, buflen, 0);
877 }
878
879 // Either user didn't specify, or the user's location failed,
880 // so use the default name in the current directory
881 if (fd == -1) {
882 const char* cwd = os::get_current_directory(buf, buflen);
883 if (cwd != NULL) {
884 size_t pos = strlen(cwd);
885 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
886 pos += fsep_len;
887 if (fsep_len > 0) {
888 fd = expand_and_open(default_pattern, buf, buflen, pos);
889 }
890 }
891 }
892
893 // try temp directory if it exists.
894 if (fd == -1) {
895 const char* tmpdir = os::get_temp_directory();
896 if (tmpdir != NULL && strlen(tmpdir) > 0) {
897 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
898 if (pos > 0) {
899 fd = expand_and_open(default_pattern, buf, buflen, pos);
900 }
901 }
902 }
903
904 return fd;
905 }
906
907 void VMError::report_and_die() {
908 // Don't allocate large buffer on stack
909 static char buffer[O_BUFLEN];
910
911 // How many errors occurred in error handler when reporting first_error.
912 static int recursive_error_count;
913
914 // We will first print a brief message to standard out (verbose = false),
915 // then save detailed information in log file (verbose = true).
916 static bool out_done = false; // done printing to standard out
917 static bool log_done = false; // done saving error log
918 static bool transmit_report_done = false; // done error reporting
919
920 if (SuppressFatalErrorMessage) {
921 os::abort();
922 }
923 jlong mytid = os::current_thread_id();
924 if (first_error == NULL &&
925 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
926
927 // first time
928 first_error_tid = mytid;
929 set_error_reported();
930
931 if (ShowMessageBoxOnError || PauseAtExit) {
932 show_message_box(buffer, sizeof(buffer));
933
934 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
935 // WatcherThread can kill JVM if the error handler hangs.
936 ShowMessageBoxOnError = false;
937 }
938
939 // Write a minidump on Windows, check core dump limits on Linux/Solaris
940 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer));
941
942 // reset signal handlers or exception filter; make sure recursive crashes
943 // are handled properly.
944 reset_signal_handlers();
945
946 } else {
947 // If UseOsErrorReporting we call this for each level of the call stack
948 // while searching for the exception handler. Only the first level needs
949 // to be reported.
950 if (UseOSErrorReporting && log_done) return;
951
952 // This is not the first error, see if it happened in a different thread
953 // or in the same thread during error reporting.
954 if (first_error_tid != mytid) {
955 char msgbuf[64];
956 jio_snprintf(msgbuf, sizeof(msgbuf),
957 "[thread " INT64_FORMAT " also had an error]",
958 mytid);
959 out.print_raw_cr(msgbuf);
960
961 // error reporting is not MT-safe, block current thread
962 os::infinite_sleep();
963
964 } else {
965 if (recursive_error_count++ > 30) {
966 out.print_raw_cr("[Too many errors, abort]");
967 os::die();
968 }
969
970 jio_snprintf(buffer, sizeof(buffer),
971 "[error occurred during error reporting %s, id 0x%x]",
972 first_error ? first_error->_current_step_info : "",
973 _id);
974 if (log.is_open()) {
975 log.cr();
976 log.print_raw_cr(buffer);
977 log.cr();
978 } else {
979 out.cr();
980 out.print_raw_cr(buffer);
981 out.cr();
982 }
983 }
984 }
985
986 // print to screen
987 if (!out_done) {
988 first_error->_verbose = false;
989
990 staticBufferStream sbs(buffer, sizeof(buffer), &out);
991 first_error->report(&sbs);
992
993 out_done = true;
994
995 first_error->_current_step = 0; // reset current_step
996 first_error->_current_step_info = ""; // reset current_step string
997 }
998
999 // print to error log file
1000 if (!log_done) {
1001 first_error->_verbose = true;
1002
1003 // see if log file is already open
1004 if (!log.is_open()) {
1005 // open log file
1006 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1007 if (fd != -1) {
1008 out.print_raw("# An error report file with more information is saved as:\n# ");
1009 out.print_raw_cr(buffer);
1010
1011 log.set_fd(fd);
1012 } else {
1013 out.print_raw_cr("# Can not save log file, dump to screen..");
1014 log.set_fd(defaultStream::output_fd());
1015 /* Error reporting currently needs dumpfile.
1016 * Maybe implement direct streaming in the future.*/
1017 transmit_report_done = true;
1018 }
1019 }
1020
1021 staticBufferStream sbs(buffer, O_BUFLEN, &log);
1022 first_error->report(&sbs);
1023 first_error->_current_step = 0; // reset current_step
1024 first_error->_current_step_info = ""; // reset current_step string
1025
1026 // Run error reporting to determine whether or not to report the crash.
1027 if (!transmit_report_done && should_report_bug(first_error->_id)) {
1028 transmit_report_done = true;
1029 const int fd2 = ::dup(log.fd());
1030 FILE* const hs_err = ::fdopen(fd2, "r");
1031 if (NULL != hs_err) {
1032 ErrorReporter er;
1033 er.call(hs_err, buffer, O_BUFLEN);
1034 }
1035 ::fclose(hs_err);
1036 }
1037
1038 if (log.fd() != defaultStream::output_fd()) {
1039 close(log.fd());
1040 }
1041
1042 log.set_fd(-1);
1043 log_done = true;
1044 }
1045
1046
1047 static bool skip_OnError = false;
1048 if (!skip_OnError && OnError && OnError[0]) {
1049 skip_OnError = true;
1050
1051 out.print_raw_cr("#");
1052 out.print_raw ("# -XX:OnError=\"");
1053 out.print_raw (OnError);
1054 out.print_raw_cr("\"");
1055
1056 char* cmd;
1057 const char* ptr = OnError;
1058 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1059 out.print_raw ("# Executing ");
1060 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1061 out.print_raw ("/bin/sh -c ");
1062 #elif defined(SOLARIS)
1063 out.print_raw ("/usr/bin/sh -c ");
1064 #endif
1065 out.print_raw ("\"");
1066 out.print_raw (cmd);
1067 out.print_raw_cr("\" ...");
1068
1069 os::fork_and_exec(cmd);
1070 }
1071
1072 // done with OnError
1073 OnError = NULL;
1074 }
1075
1076 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1077 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1078 skip_replay = true;
1079 ciEnv* env = ciEnv::current();
1080 if (env != NULL) {
1081 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1082 if (fd != -1) {
1083 FILE* replay_data_file = os::open(fd, "w");
1084 if (replay_data_file != NULL) {
1085 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1086 env->dump_replay_data_unsafe(&replay_data_stream);
1087 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1088 out.print_raw_cr(buffer);
1089 } else {
1090 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1091 out.print_raw_cr(strerror(os::get_last_error()));
1092 }
1093 }
1094 }
1095 }
1096
1097 static bool skip_bug_url = !should_report_bug(first_error->_id);
1098 if (!skip_bug_url) {
1099 skip_bug_url = true;
1100
1101 out.print_raw_cr("#");
1102 print_bug_submit_message(&out, _thread);
1103 }
1104
1105 if (!UseOSErrorReporting) {
1106 // os::abort() will call abort hooks, try it first.
1107 static bool skip_os_abort = false;
1108 if (!skip_os_abort) {
1109 skip_os_abort = true;
1110 bool dump_core = should_report_bug(first_error->_id);
1111 os::abort(dump_core);
1112 }
1113
1114 // if os::abort() doesn't abort, try os::die();
1115 os::die();
1116 }
1117 }
1118
1119 /*
1120 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1121 * ensures utilities such as jmap can observe the process is a consistent state.
1122 */
1123 class VM_ReportJavaOutOfMemory : public VM_Operation {
1124 private:
1125 VMError *_err;
1126 public:
1127 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
1128 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1129 void doit();
1130 };
1131
1132 void VM_ReportJavaOutOfMemory::doit() {
1133 // Don't allocate large buffer on stack
1134 static char buffer[O_BUFLEN];
1135
1136 tty->print_cr("#");
1137 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
1138 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1139
1140 // make heap parsability
1141 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1142
1143 char* cmd;
1144 const char* ptr = OnOutOfMemoryError;
1145 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1146 tty->print("# Executing ");
1147 #if defined(LINUX)
1148 tty->print ("/bin/sh -c ");
1149 #elif defined(SOLARIS)
1150 tty->print ("/usr/bin/sh -c ");
1151 #endif
1152 tty->print_cr("\"%s\"...", cmd);
1153
1154 os::fork_and_exec(cmd);
1155 }
1156 }
1157
1158 void VMError::report_java_out_of_memory() {
1159 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1160 MutexLocker ml(Heap_lock);
1161 VM_ReportJavaOutOfMemory op(this);
1162 VMThread::execute(&op);
1163 }
1164 }