1 /*
2 * Copyright (c) 2003, 2017, 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 "compiler/disassembler.hpp"
30 #include "gc/shared/collectedHeap.hpp"
31 #include "logging/logConfiguration.hpp"
32 #include "prims/jvm.h"
33 #include "prims/whitebox.hpp"
34 #include "runtime/arguments.hpp"
35 #include "runtime/atomic.hpp"
36 #include "runtime/frame.inline.hpp"
37 #include "runtime/init.hpp"
38 #include "runtime/os.hpp"
39 #include "runtime/thread.inline.hpp"
40 #include "runtime/vmThread.hpp"
41 #include "runtime/vm_operations.hpp"
42 #include "runtime/vm_version.hpp"
43 #include "services/memTracker.hpp"
44 #include "trace/traceMacros.hpp"
45 #include "utilities/debug.hpp"
46 #include "utilities/decoder.hpp"
47 #include "utilities/defaultStream.hpp"
48 #include "utilities/errorReporter.hpp"
49 #include "utilities/events.hpp"
50 #include "utilities/vmError.hpp"
51
52 // List of environment variables that should be reported in error log file.
53 const char *env_list[] = {
54 // All platforms
55 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
56 "JAVA_COMPILER", "PATH", "USERNAME",
57
58 // Env variables that are defined on Solaris/Linux/BSD
59 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
60 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
61
62 // defined on Linux
63 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
64
65 // defined on Darwin
66 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
67 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
68 "DYLD_INSERT_LIBRARIES",
69
70 // defined on Windows
71 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
72
73 (const char *)0
74 };
75
76 // A simple parser for -XX:OnError, usage:
77 // ptr = OnError;
78 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
79 // ... ...
80 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
81 if (ptr == NULL || *ptr == NULL) return NULL;
82
83 const char* cmd = *ptr;
84
85 // skip leading blanks or ';'
86 while (*cmd == ' ' || *cmd == ';') cmd++;
87
88 if (*cmd == '\0') return NULL;
89
90 const char * cmdend = cmd;
91 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
92
93 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
94
95 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
96 return buf;
97 }
98
99 static void print_bug_submit_message(outputStream *out, Thread *thread) {
100 if (out == NULL) return;
101 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
102 out->print_raw ("# ");
103 out->print_raw_cr(Arguments::java_vendor_url_bug());
104 // If the crash is in native code, encourage user to submit a bug to the
105 // provider of that code.
106 if (thread && thread->is_Java_thread() &&
107 !thread->is_hidden_from_external_view()) {
108 JavaThread* jt = (JavaThread*)thread;
109 if (jt->thread_state() == _thread_in_native) {
110 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
111 }
112 }
113 out->print_raw_cr("#");
114 }
115
116 bool VMError::coredump_status;
117 char VMError::coredump_message[O_BUFLEN];
118
119 void VMError::record_coredump_status(const char* message, bool status) {
120 coredump_status = status;
121 strncpy(coredump_message, message, sizeof(coredump_message));
122 coredump_message[sizeof(coredump_message)-1] = 0;
123 }
124
125 // Return a string to describe the error
126 char* VMError::error_string(char* buf, int buflen) {
127 char signame_buf[64];
128 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
129
130 if (signame) {
131 jio_snprintf(buf, buflen,
132 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
133 signame, _id, _pc,
134 os::current_process_id(), os::current_thread_id());
135 } else if (_filename != NULL && _lineno > 0) {
136 // skip directory names
137 char separator = os::file_separator()[0];
138 const char *p = strrchr(_filename, separator);
139 int n = jio_snprintf(buf, buflen,
140 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
141 p ? p + 1 : _filename, _lineno,
142 os::current_process_id(), os::current_thread_id());
143 if (n >= 0 && n < buflen && _message) {
144 if (strlen(_detail_msg) > 0) {
145 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
146 os::line_separator(), _message, _detail_msg);
147 } else {
148 jio_snprintf(buf + n, buflen - n, "%sError: %s",
149 os::line_separator(), _message);
150 }
151 }
152 } else {
153 jio_snprintf(buf, buflen,
154 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
155 _id, os::current_process_id(), os::current_thread_id());
156 }
157
158 return buf;
159 }
160
161 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
162 char* buf, int buflen, bool verbose) {
163 #ifdef ZERO
164 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
165 // StackFrameStream uses the frame anchor, which may not have
166 // been set up. This can be done at any time in Zero, however,
167 // so if it hasn't been set up then we just set it up now and
168 // clear it again when we're done.
169 bool has_last_Java_frame = jt->has_last_Java_frame();
170 if (!has_last_Java_frame)
171 jt->set_last_Java_frame();
172 st->print("Java frames:");
173
174 // If the top frame is a Shark frame and the frame anchor isn't
175 // set up then it's possible that the information in the frame
176 // is garbage: it could be from a previous decache, or it could
177 // simply have never been written. So we print a warning...
178 StackFrameStream sfs(jt);
179 if (!has_last_Java_frame && !sfs.is_done()) {
180 if (sfs.current()->zeroframe()->is_shark_frame()) {
181 st->print(" (TOP FRAME MAY BE JUNK)");
182 }
183 }
184 st->cr();
185
186 // Print the frames
187 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
188 sfs.current()->zero_print_on_error(i, st, buf, buflen);
189 st->cr();
190 }
191
192 // Reset the frame anchor if necessary
193 if (!has_last_Java_frame)
194 jt->reset_last_Java_frame();
195 }
196 #else
197 if (jt->has_last_Java_frame()) {
198 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
199 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
200 sfs.current()->print_on_error(st, buf, buflen, verbose);
201 st->cr();
202 }
203 }
204 #endif // ZERO
205 }
206
207 static void print_oom_reasons(outputStream* st) {
208 st->print_cr("# Possible reasons:");
209 st->print_cr("# The system is out of physical RAM or swap space");
210 if (UseCompressedOops) {
211 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
212 }
213 if (LogBytesPerWord == 2) {
214 st->print_cr("# In 32 bit mode, the process size limit was hit");
215 }
216 st->print_cr("# Possible solutions:");
217 st->print_cr("# Reduce memory load on the system");
218 st->print_cr("# Increase physical memory or swap space");
219 st->print_cr("# Check if swap backing store is full");
220 if (LogBytesPerWord == 2) {
221 st->print_cr("# Use 64 bit Java on a 64 bit OS");
222 }
223 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
224 st->print_cr("# Decrease number of Java threads");
225 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
226 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
227 if (UseCompressedOops) {
228 switch (Universe::narrow_oop_mode()) {
229 case Universe::UnscaledNarrowOop:
230 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
231 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
232 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
233 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
234 break;
235 case Universe::ZeroBasedNarrowOop:
236 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
237 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
238 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
239 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
240 break;
241 }
242 }
243 st->print_cr("# This output file may be truncated or incomplete.");
244 }
245
246 static const char* gc_mode() {
247 if (UseG1GC) return "g1 gc";
248 if (UseParallelGC) return "parallel gc";
249 if (UseConcMarkSweepGC) return "concurrent mark sweep gc";
250 if (UseSerialGC) return "serial gc";
251 return "ERROR in GC mode";
252 }
253
254 static void report_vm_version(outputStream* st, char* buf, int buflen) {
255 // VM version
256 st->print_cr("#");
257 JDK_Version::current().to_string(buf, buflen);
258 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
259 JDK_Version::runtime_name() : "";
260 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
261 JDK_Version::runtime_version() : "";
262 const char* jdk_debug_level = Abstract_VM_Version::printable_jdk_debug_level() != NULL ?
263 Abstract_VM_Version::printable_jdk_debug_level() : "";
264
265 st->print_cr("# JRE version: %s (%s) (%sbuild %s)", runtime_name, buf,
266 jdk_debug_level, runtime_version);
267
268 // This is the long version with some default settings added
269 st->print_cr("# Java VM: %s (%s%s, %s%s%s%s%s, %s, %s)",
270 Abstract_VM_Version::vm_name(),
271 jdk_debug_level,
272 Abstract_VM_Version::vm_release(),
273 Abstract_VM_Version::vm_info_string(),
274 TieredCompilation ? ", tiered" : "",
275 #if INCLUDE_JVMCI
276 EnableJVMCI ? ", jvmci" : "",
277 UseJVMCICompiler ? ", jvmci compiler" : "",
278 #else
279 "", "",
280 #endif
281 UseCompressedOops ? ", compressed oops" : "",
282 gc_mode(),
283 Abstract_VM_Version::vm_platform_string()
284 );
285 }
286
287 // This is the main function to report a fatal error. Only one thread can
288 // call this function, so we don't need to worry about MT-safety. But it's
289 // possible that the error handler itself may crash or die on an internal
290 // error, for example, when the stack/heap is badly damaged. We must be
291 // able to handle recursive errors that happen inside error handler.
292 //
293 // Error reporting is done in several steps. If a crash or internal error
294 // occurred when reporting an error, the nested signal/exception handler
295 // can skip steps that are already (or partially) done. Error reporting will
296 // continue from the next step. This allows us to retrieve and print
297 // information that may be unsafe to get after a fatal error. If it happens,
298 // you may find nested report_and_die() frames when you look at the stack
299 // in a debugger.
300 //
301 // In general, a hang in error handler is much worse than a crash or internal
302 // error, as it's harder to recover from a hang. Deadlock can happen if we
303 // try to grab a lock that is already owned by current thread, or if the
304 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
305 // error handler and all the functions it called should avoid grabbing any
306 // lock. An important thing to notice is that memory allocation needs a lock.
307 //
308 // We should avoid using large stack allocated buffers. Many errors happen
309 // when stack space is already low. Making things even worse is that there
310 // could be nested report_and_die() calls on stack (see above). Only one
311 // thread can report error, so large buffers are statically allocated in data
312 // segment.
313
314 int VMError::_current_step;
315 const char* VMError::_current_step_info;
316
317 volatile jlong VMError::_reporting_start_time = -1;
318 volatile bool VMError::_reporting_did_timeout = false;
319 volatile jlong VMError::_step_start_time = -1;
320 volatile bool VMError::_step_did_timeout = false;
321
322 // Helper, return current timestamp for timeout handling.
323 jlong VMError::get_current_timestamp() {
324 return os::javaTimeNanos();
325 }
326 // Factor to translate the timestamp to seconds.
327 #define TIMESTAMP_TO_SECONDS_FACTOR (1000 * 1000 * 1000)
328
329 void VMError::record_reporting_start_time() {
330 const jlong now = get_current_timestamp();
331 Atomic::store(now, &_reporting_start_time);
332 }
333
334 jlong VMError::get_reporting_start_time() {
335 return Atomic::load(&_reporting_start_time);
336 }
337
338 void VMError::record_step_start_time() {
339 const jlong now = get_current_timestamp();
340 Atomic::store(now, &_step_start_time);
341 }
342
343 jlong VMError::get_step_start_time() {
344 return Atomic::load(&_step_start_time);
345 }
346
347 void VMError::report(outputStream* st, bool _verbose) {
348
349 # define BEGIN if (_current_step == 0) { _current_step = __LINE__;
350 # define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s; \
351 record_step_start_time(); _step_did_timeout = false;
352 # define END }
353
354 // don't allocate large buffer on stack
355 static char buf[O_BUFLEN];
356
357 BEGIN
358
359 STEP("printing fatal error message")
360
361 st->print_cr("#");
362 if (should_report_bug(_id)) {
363 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
364 } else {
365 st->print_cr("# There is insufficient memory for the Java "
366 "Runtime Environment to continue.");
367 }
368
369 #ifndef PRODUCT
370 // Error handler self tests
371
372 // test secondary error handling. Test it twice, to test that resetting
373 // error handler after a secondary crash works.
374 STEP("test secondary crash 1")
375 if (_verbose && TestCrashInErrorHandler != 0) {
376 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
377 TestCrashInErrorHandler);
378 controlled_crash(TestCrashInErrorHandler);
379 }
380
381 STEP("test secondary crash 2")
382 if (_verbose && TestCrashInErrorHandler != 0) {
383 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
384 TestCrashInErrorHandler);
385 controlled_crash(TestCrashInErrorHandler);
386 }
387
388 // TestUnresponsiveErrorHandler: We want to test both step timeouts and global timeout.
389 // Step to global timeout ratio is 4:1, so in order to be absolutely sure we hit the
390 // global timeout, let's execute the timeout step five times.
391 // See corresponding test in test/runtime/ErrorHandling/TimeoutInErrorHandlingTest.java
392 #define TIMEOUT_TEST_STEP STEP("test unresponsive error reporting step") \
393 if (_verbose && TestUnresponsiveErrorHandler) { os::infinite_sleep(); }
394 TIMEOUT_TEST_STEP
395 TIMEOUT_TEST_STEP
396 TIMEOUT_TEST_STEP
397 TIMEOUT_TEST_STEP
398 TIMEOUT_TEST_STEP
399
400 STEP("test safefetch in error handler")
401 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
402 // to test that resetting the signal handler works correctly.
403 if (_verbose && TestSafeFetchInErrorHandler) {
404 st->print_cr("Will test SafeFetch...");
405 if (CanUseSafeFetch32()) {
406 int* const invalid_pointer = (int*) get_segfault_address();
407 const int x = 0x76543210;
408 int i1 = SafeFetch32(invalid_pointer, x);
409 int i2 = SafeFetch32(invalid_pointer, x);
410 if (i1 == x && i2 == x) {
411 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
412 } else {
413 st->print_cr("??");
414 }
415 } else {
416 st->print_cr("not possible; skipped.");
417 }
418 }
419 #endif // PRODUCT
420
421 STEP("printing type of error")
422
423 switch(_id) {
424 case OOM_MALLOC_ERROR:
425 case OOM_MMAP_ERROR:
426 if (_size) {
427 st->print("# Native memory allocation ");
428 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
429 "(mmap) failed to map ");
430 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
431 st->print("%s", buf);
432 st->print(" bytes");
433 if (strlen(_detail_msg) > 0) {
434 st->print(" for ");
435 st->print("%s", _detail_msg);
436 }
437 st->cr();
438 } else {
439 if (strlen(_detail_msg) > 0) {
440 st->print("# ");
441 st->print_cr("%s", _detail_msg);
442 }
443 }
444 // In error file give some solutions
445 if (_verbose) {
446 print_oom_reasons(st);
447 } else {
448 return; // that's enough for the screen
449 }
450 break;
451 case INTERNAL_ERROR:
452 default:
453 break;
454 }
455
456 STEP("printing exception/signal name")
457
458 st->print_cr("#");
459 st->print("# ");
460 // Is it an OS exception/signal?
461 if (os::exception_name(_id, buf, sizeof(buf))) {
462 st->print("%s", buf);
463 st->print(" (0x%x)", _id); // signal number
464 st->print(" at pc=" PTR_FORMAT, p2i(_pc));
465 } else {
466 if (should_report_bug(_id)) {
467 st->print("Internal Error");
468 } else {
469 st->print("Out of Memory Error");
470 }
471 if (_filename != NULL && _lineno > 0) {
472 #ifdef PRODUCT
473 // In product mode chop off pathname?
474 char separator = os::file_separator()[0];
475 const char *p = strrchr(_filename, separator);
476 const char *file = p ? p+1 : _filename;
477 #else
478 const char *file = _filename;
479 #endif
480 st->print(" (%s:%d)", file, _lineno);
481 } else {
482 st->print(" (0x%x)", _id);
483 }
484 }
485
486 STEP("printing current thread and pid")
487
488 // process id, thread id
489 st->print(", pid=%d", os::current_process_id());
490 st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
491 st->cr();
492
493 STEP("printing error message")
494
495 if (should_report_bug(_id)) { // already printed the message.
496 // error message
497 if (strlen(_detail_msg) > 0) {
498 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
499 } else if (_message) {
500 st->print_cr("# Error: %s", _message);
501 }
502 }
503
504 STEP("printing Java version string")
505
506 report_vm_version(st, buf, sizeof(buf));
507
508 STEP("printing problematic frame")
509
510 // Print current frame if we have a context (i.e. it's a crash)
511 if (_context) {
512 st->print_cr("# Problematic frame:");
513 st->print("# ");
514 frame fr = os::fetch_frame_from_context(_context);
515 fr.print_on_error(st, buf, sizeof(buf));
516 st->cr();
517 st->print_cr("#");
518 }
519
520 STEP("printing core file information")
521 st->print("# ");
522 if (CreateCoredumpOnCrash) {
523 if (coredump_status) {
524 st->print("Core dump will be written. Default location: %s", coredump_message);
525 } else {
526 st->print("No core dump will be written. %s", coredump_message);
527 }
528 } else {
529 st->print("CreateCoredumpOnCrash turned off, no core file dumped");
530 }
531 st->cr();
532 st->print_cr("#");
533
534 STEP("printing bug submit message")
535
536 if (should_report_bug(_id) && _verbose) {
537 print_bug_submit_message(st, _thread);
538 }
539
540 STEP("printing summary")
541
542 if (_verbose) {
543 st->cr();
544 st->print_cr("--------------- S U M M A R Y ------------");
545 st->cr();
546 }
547
548 STEP("printing VM option summary")
549
550 if (_verbose) {
551 // VM options
552 Arguments::print_summary_on(st);
553 st->cr();
554 }
555
556 STEP("printing summary machine and OS info")
557
558 if (_verbose) {
559 os::print_summary_info(st, buf, sizeof(buf));
560 }
561
562
563 STEP("printing date and time")
564
565 if (_verbose) {
566 os::print_date_and_time(st, buf, sizeof(buf));
567 }
568
569 STEP("printing thread")
570
571 if (_verbose) {
572 st->cr();
573 st->print_cr("--------------- T H R E A D ---------------");
574 st->cr();
575 }
576
577 STEP("printing current thread")
578
579 // current thread
580 if (_verbose) {
581 if (_thread) {
582 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread));
583 _thread->print_on_error(st, buf, sizeof(buf));
584 st->cr();
585 } else {
586 st->print_cr("Current thread is native thread");
587 }
588 st->cr();
589 }
590
591 STEP("printing current compile task")
592
593 if (_verbose && _thread && _thread->is_Compiler_thread()) {
594 CompilerThread* t = (CompilerThread*)_thread;
595 if (t->task()) {
596 st->cr();
597 st->print_cr("Current CompileTask:");
598 t->task()->print_line_on_error(st, buf, sizeof(buf));
599 st->cr();
600 }
601 }
602
603
604 STEP("printing stack bounds")
605
606 if (_verbose) {
607 st->print("Stack: ");
608
609 address stack_top;
610 size_t stack_size;
611
612 if (_thread) {
613 stack_top = _thread->stack_base();
614 stack_size = _thread->stack_size();
615 } else {
616 stack_top = os::current_stack_base();
617 stack_size = os::current_stack_size();
618 }
619
620 address stack_bottom = stack_top - stack_size;
621 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));
622
623 frame fr = _context ? os::fetch_frame_from_context(_context)
624 : os::current_frame();
625
626 if (fr.sp()) {
627 st->print(", sp=" PTR_FORMAT, p2i(fr.sp()));
628 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
629 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
630 }
631
632 st->cr();
633 }
634
635 STEP("printing native stack")
636
637 if (_verbose) {
638 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
639 // We have printed the native stack in platform-specific code
640 // Windows/x64 needs special handling.
641 } else {
642 frame fr = _context ? os::fetch_frame_from_context(_context)
643 : os::current_frame();
644
645 print_native_stack(st, fr, _thread, buf, sizeof(buf));
646 }
647 }
648
649 STEP("printing Java stack")
650
651 if (_verbose && _thread && _thread->is_Java_thread()) {
652 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
653 }
654
655 STEP("printing target Java thread stack")
656
657 // printing Java thread stack trace if it is involved in GC crash
658 if (_verbose && _thread && (_thread->is_Named_thread())) {
659 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
660 if (jt != NULL) {
661 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
662 print_stack_trace(st, jt, buf, sizeof(buf), true);
663 }
664 }
665
666 STEP("printing siginfo")
667
668 // signal no, signal code, address that caused the fault
669 if (_verbose && _siginfo) {
670 st->cr();
671 os::print_siginfo(st, _siginfo);
672 st->cr();
673 }
674
675 STEP("CDS archive access warning")
676
677 // Print an explicit hint if we crashed on access to the CDS archive.
678 if (_verbose && _siginfo) {
679 check_failing_cds_access(st, _siginfo);
680 st->cr();
681 }
682
683 STEP("printing register info")
684
685 // decode register contents if possible
686 if (_verbose && _context && Universe::is_fully_initialized()) {
687 os::print_register_info(st, _context);
688 st->cr();
689 }
690
691 STEP("printing registers, top of stack, instructions near pc")
692
693 // registers, top of stack, instructions near pc
694 if (_verbose && _context) {
695 os::print_context(st, _context);
696 st->cr();
697 }
698
699 STEP("printing code blob if possible")
700
701 if (_verbose && _context) {
702 CodeBlob* cb = CodeCache::find_blob(_pc);
703 if (cb != NULL) {
704 if (Interpreter::contains(_pc)) {
705 // The interpreter CodeBlob is very large so try to print the codelet instead.
706 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
707 if (codelet != NULL) {
708 codelet->print_on(st);
709 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
710 }
711 } else {
712 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
713 if (desc != NULL) {
714 desc->print_on(st);
715 Disassembler::decode(desc->begin(), desc->end(), st);
716 } else {
717 Disassembler::decode(cb, st);
718 st->cr();
719 }
720 }
721 }
722 }
723
724 STEP("printing VM operation")
725
726 if (_verbose && _thread && _thread->is_VM_thread()) {
727 VMThread* t = (VMThread*)_thread;
728 VM_Operation* op = t->vm_operation();
729 if (op) {
730 op->print_on_error(st);
731 st->cr();
732 st->cr();
733 }
734 }
735
736 STEP("printing process")
737
738 if (_verbose) {
739 st->cr();
740 st->print_cr("--------------- P R O C E S S ---------------");
741 st->cr();
742 }
743
744 STEP("printing all threads")
745
746 // all threads
747 if (_verbose && _thread) {
748 Threads::print_on_error(st, _thread, buf, sizeof(buf));
749 st->cr();
750 }
751
752 STEP("printing VM state")
753
754 if (_verbose) {
755 // Safepoint state
756 st->print("VM state:");
757
758 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
759 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
760 else st->print("not at safepoint");
761
762 // Also see if error occurred during initialization or shutdown
763 if (!Universe::is_fully_initialized()) {
764 st->print(" (not fully initialized)");
765 } else if (VM_Exit::vm_exited()) {
766 st->print(" (shutting down)");
767 } else {
768 st->print(" (normal execution)");
769 }
770 st->cr();
771 st->cr();
772 }
773
774 STEP("printing owned locks on error")
775
776 // mutexes/monitors that currently have an owner
777 if (_verbose) {
778 print_owned_locks_on_error(st);
779 st->cr();
780 }
781
782 STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
783
784 if (_verbose && Exceptions::has_exception_counts()) {
785 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
786 Exceptions::print_exception_counts_on_error(st);
787 st->cr();
788 }
789
790 STEP("printing compressed oops mode")
791
792 if (_verbose && UseCompressedOops) {
793 Universe::print_compressed_oops_mode(st);
794 if (UseCompressedClassPointers) {
795 Metaspace::print_compressed_class_space(st);
796 }
797 st->cr();
798 }
799
800 STEP("printing heap information")
801
802 if (_verbose && Universe::is_fully_initialized()) {
803 Universe::heap()->print_on_error(st);
804 st->cr();
805 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
806 st->cr();
807 }
808
809 STEP("printing code cache information")
810
811 if (_verbose && Universe::is_fully_initialized()) {
812 // print code cache information before vm abort
813 CodeCache::print_summary(st);
814 st->cr();
815 }
816
817 STEP("printing ring buffers")
818
819 if (_verbose) {
820 Events::print_all(st);
821 st->cr();
822 }
823
824 STEP("printing dynamic libraries")
825
826 if (_verbose) {
827 // dynamic libraries, or memory map
828 os::print_dll_info(st);
829 st->cr();
830 }
831
832 STEP("printing VM options")
833
834 if (_verbose) {
835 // VM options
836 Arguments::print_on(st);
837 st->cr();
838 }
839
840 STEP("printing warning if internal testing API used")
841
842 if (WhiteBox::used()) {
843 st->print_cr("Unsupported internal testing APIs have been used.");
844 st->cr();
845 }
846
847 STEP("printing log configuration")
848 if (_verbose){
849 st->print_cr("Logging:");
850 LogConfiguration::describe_current_configuration(st);
851 st->cr();
852 }
853
854 STEP("printing all environment variables")
855
856 if (_verbose) {
857 os::print_environment_variables(st, env_list);
858 st->cr();
859 }
860
861 STEP("printing signal handlers")
862
863 if (_verbose) {
864 os::print_signal_handlers(st, buf, sizeof(buf));
865 st->cr();
866 }
867
868 STEP("Native Memory Tracking")
869 if (_verbose) {
870 MemTracker::error_report(st);
871 }
872
873 STEP("printing system")
874
875 if (_verbose) {
876 st->cr();
877 st->print_cr("--------------- S Y S T E M ---------------");
878 st->cr();
879 }
880
881 STEP("printing OS information")
882
883 if (_verbose) {
884 os::print_os_info(st);
885 st->cr();
886 }
887
888 STEP("printing CPU info")
889 if (_verbose) {
890 os::print_cpu_info(st, buf, sizeof(buf));
891 st->cr();
892 }
893
894 STEP("printing memory info")
895
896 if (_verbose) {
897 os::print_memory_info(st);
898 st->cr();
899 }
900
901 STEP("printing internal vm info")
902
903 if (_verbose) {
904 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
905 st->cr();
906 }
907
908 // print a defined marker to show that error handling finished correctly.
909 STEP("printing end marker")
910
911 if (_verbose) {
912 st->print_cr("END.");
913 }
914
915 END
916
917 # undef BEGIN
918 # undef STEP
919 # undef END
920 }
921
922 // Report for the vm_info_cmd. This prints out the information above omitting
923 // crash and thread specific information. If output is added above, it should be added
924 // here also, if it is safe to call during a running process.
925 void VMError::print_vm_info(outputStream* st) {
926
927 char buf[O_BUFLEN];
928 report_vm_version(st, buf, sizeof(buf));
929
930 // STEP("printing summary")
931
932 st->cr();
933 st->print_cr("--------------- S U M M A R Y ------------");
934 st->cr();
935
936 // STEP("printing VM option summary")
937
938 // VM options
939 Arguments::print_summary_on(st);
940 st->cr();
941
942 // STEP("printing summary machine and OS info")
943
944 os::print_summary_info(st, buf, sizeof(buf));
945
946 // STEP("printing date and time")
947
948 os::print_date_and_time(st, buf, sizeof(buf));
949
950 // Skip: STEP("printing thread")
951
952 // STEP("printing process")
953
954 st->cr();
955 st->print_cr("--------------- P R O C E S S ---------------");
956 st->cr();
957
958 // STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
959
960 if (Exceptions::has_exception_counts()) {
961 st->print_cr("OutOfMemory and StackOverflow Exception counts:");
962 Exceptions::print_exception_counts_on_error(st);
963 st->cr();
964 }
965
966 // STEP("printing compressed oops mode")
967
968 if (UseCompressedOops) {
969 Universe::print_compressed_oops_mode(st);
970 if (UseCompressedClassPointers) {
971 Metaspace::print_compressed_class_space(st);
972 }
973 st->cr();
974 }
975
976 // STEP("printing heap information")
977
978 if (Universe::is_fully_initialized()) {
979 MutexLocker hl(Heap_lock);
980 Universe::heap()->print_on_error(st);
981 st->cr();
982 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
983 st->cr();
984 }
985
986 // STEP("printing code cache information")
987
988 if (Universe::is_fully_initialized()) {
989 // print code cache information before vm abort
990 CodeCache::print_summary(st);
991 st->cr();
992 }
993
994 // STEP("printing ring buffers")
995
996 Events::print_all(st);
997 st->cr();
998
999 // STEP("printing dynamic libraries")
1000
1001 // dynamic libraries, or memory map
1002 os::print_dll_info(st);
1003 st->cr();
1004
1005 // STEP("printing VM options")
1006
1007 // VM options
1008 Arguments::print_on(st);
1009 st->cr();
1010
1011 // STEP("printing warning if internal testing API used")
1012
1013 if (WhiteBox::used()) {
1014 st->print_cr("Unsupported internal testing APIs have been used.");
1015 st->cr();
1016 }
1017
1018 // STEP("printing log configuration")
1019 st->print_cr("Logging:");
1020 LogConfiguration::describe(st);
1021 st->cr();
1022
1023 // STEP("printing all environment variables")
1024
1025 os::print_environment_variables(st, env_list);
1026 st->cr();
1027
1028 // STEP("printing signal handlers")
1029
1030 os::print_signal_handlers(st, buf, sizeof(buf));
1031 st->cr();
1032
1033 // STEP("Native Memory Tracking")
1034
1035 MemTracker::error_report(st);
1036
1037 // STEP("printing system")
1038
1039 st->cr();
1040 st->print_cr("--------------- S Y S T E M ---------------");
1041 st->cr();
1042
1043 // STEP("printing OS information")
1044
1045 os::print_os_info(st);
1046 st->cr();
1047
1048 // STEP("printing CPU info")
1049
1050 os::print_cpu_info(st, buf, sizeof(buf));
1051 st->cr();
1052
1053 // STEP("printing memory info")
1054
1055 os::print_memory_info(st);
1056 st->cr();
1057
1058 // STEP("printing internal vm info")
1059
1060 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
1061 st->cr();
1062
1063 // print a defined marker to show that error handling finished correctly.
1064 // STEP("printing end marker")
1065
1066 st->print_cr("END.");
1067 }
1068
1069 volatile intptr_t VMError::first_error_tid = -1;
1070
1071 // An error could happen before tty is initialized or after it has been
1072 // destroyed.
1073 // Please note: to prevent large stack allocations, the log- and
1074 // output-stream use a global scratch buffer for format printing.
1075 // (see VmError::report_and_die(). Access to those streams is synchronized
1076 // in VmError::report_and_die() - there is only one reporting thread at
1077 // any given time.
1078 fdStream VMError::out(defaultStream::output_fd());
1079 fdStream VMError::log; // error log used by VMError::report_and_die()
1080
1081 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
1082 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
1083 int fd = -1;
1084 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
1085 // the O_EXCL flag will cause the open to fail if the file exists
1086 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
1087 }
1088 return fd;
1089 }
1090
1091 /**
1092 * Construct file name for a log file and return it's file descriptor.
1093 * Name and location depends on pattern, default_pattern params and access
1094 * permissions.
1095 */
1096 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
1097 int fd = -1;
1098
1099 // If possible, use specified pattern to construct log file name
1100 if (pattern != NULL) {
1101 fd = expand_and_open(pattern, buf, buflen, 0);
1102 }
1103
1104 // Either user didn't specify, or the user's location failed,
1105 // so use the default name in the current directory
1106 if (fd == -1) {
1107 const char* cwd = os::get_current_directory(buf, buflen);
1108 if (cwd != NULL) {
1109 size_t pos = strlen(cwd);
1110 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
1111 pos += fsep_len;
1112 if (fsep_len > 0) {
1113 fd = expand_and_open(default_pattern, buf, buflen, pos);
1114 }
1115 }
1116 }
1117
1118 // try temp directory if it exists.
1119 if (fd == -1) {
1120 const char* tmpdir = os::get_temp_directory();
1121 if (tmpdir != NULL && strlen(tmpdir) > 0) {
1122 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
1123 if (pos > 0) {
1124 fd = expand_and_open(default_pattern, buf, buflen, pos);
1125 }
1126 }
1127 }
1128
1129 return fd;
1130 }
1131
1132 int VMError::_id;
1133 const char* VMError::_message;
1134 char VMError::_detail_msg[1024];
1135 Thread* VMError::_thread;
1136 address VMError::_pc;
1137 void* VMError::_siginfo;
1138 void* VMError::_context;
1139 const char* VMError::_filename;
1140 int VMError::_lineno;
1141 size_t VMError::_size;
1142
1143 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
1144 void* context, const char* detail_fmt, ...)
1145 {
1146 va_list detail_args;
1147 va_start(detail_args, detail_fmt);
1148 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0);
1149 va_end(detail_args);
1150 }
1151
1152 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context)
1153 {
1154 report_and_die(thread, sig, pc, siginfo, context, "%s", "");
1155 }
1156
1157 void VMError::report_and_die(const char* message, const char* detail_fmt, ...)
1158 {
1159 va_list detail_args;
1160 va_start(detail_args, detail_fmt);
1161 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0);
1162 va_end(detail_args);
1163 }
1164
1165 void VMError::report_and_die(const char* message)
1166 {
1167 report_and_die(message, "%s", "");
1168 }
1169
1170 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message,
1171 const char* detail_fmt, va_list detail_args)
1172 {
1173 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0);
1174 }
1175
1176 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
1177 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) {
1178 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size);
1179 }
1180
1181 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
1182 Thread* thread, address pc, void* siginfo, void* context, const char* filename,
1183 int lineno, size_t size)
1184 {
1185 // Don't allocate large buffer on stack
1186 static char buffer[O_BUFLEN];
1187 out.set_scratch_buffer(buffer, sizeof(buffer));
1188 log.set_scratch_buffer(buffer, sizeof(buffer));
1189
1190 // How many errors occurred in error handler when reporting first_error.
1191 static int recursive_error_count;
1192
1193 // We will first print a brief message to standard out (verbose = false),
1194 // then save detailed information in log file (verbose = true).
1195 static bool out_done = false; // done printing to standard out
1196 static bool log_done = false; // done saving error log
1197 static bool transmit_report_done = false; // done error reporting
1198
1199 if (SuppressFatalErrorMessage) {
1200 os::abort(CreateCoredumpOnCrash);
1201 }
1202 intptr_t mytid = os::current_thread_id();
1203 if (first_error_tid == -1 &&
1204 Atomic::cmpxchg_ptr(mytid, &first_error_tid, -1) == -1) {
1205
1206 // Initialize time stamps to use the same base.
1207 out.time_stamp().update_to(1);
1208 log.time_stamp().update_to(1);
1209
1210 _id = id;
1211 _message = message;
1212 _thread = thread;
1213 _pc = pc;
1214 _siginfo = siginfo;
1215 _context = context;
1216 _filename = filename;
1217 _lineno = lineno;
1218 _size = size;
1219 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args);
1220
1221 // first time
1222 set_error_reported();
1223
1224 reporting_started();
1225 record_reporting_start_time();
1226
1227 if (ShowMessageBoxOnError || PauseAtExit) {
1228 show_message_box(buffer, sizeof(buffer));
1229
1230 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1231 // WatcherThread can kill JVM if the error handler hangs.
1232 ShowMessageBoxOnError = false;
1233 }
1234
1235 os::check_dump_limit(buffer, sizeof(buffer));
1236
1237 // reset signal handlers or exception filter; make sure recursive crashes
1238 // are handled properly.
1239 reset_signal_handlers();
1240
1241 TRACE_VM_ERROR();
1242
1243 } else {
1244 // If UseOsErrorReporting we call this for each level of the call stack
1245 // while searching for the exception handler. Only the first level needs
1246 // to be reported.
1247 if (UseOSErrorReporting && log_done) return;
1248
1249 // This is not the first error, see if it happened in a different thread
1250 // or in the same thread during error reporting.
1251 if (first_error_tid != mytid) {
1252 char msgbuf[64];
1253 jio_snprintf(msgbuf, sizeof(msgbuf),
1254 "[thread " INTX_FORMAT " also had an error]",
1255 mytid);
1256 out.print_raw_cr(msgbuf);
1257
1258 // error reporting is not MT-safe, block current thread
1259 os::infinite_sleep();
1260
1261 } else {
1262 if (recursive_error_count++ > 30) {
1263 out.print_raw_cr("[Too many errors, abort]");
1264 os::die();
1265 }
1266
1267 outputStream* const st = log.is_open() ? &log : &out;
1268 st->cr();
1269
1270 // Timeout handling.
1271 if (_step_did_timeout) {
1272 // The current step had a timeout. Lets continue reporting with the next step.
1273 st->print_raw("[timeout occurred during error reporting in step \"");
1274 st->print_raw(_current_step_info);
1275 st->print_cr("\"] after " INT64_FORMAT " s.",
1276 (get_current_timestamp() - _step_start_time) / TIMESTAMP_TO_SECONDS_FACTOR);
1277 } else if (_reporting_did_timeout) {
1278 // We hit ErrorLogTimeout. Reporting will stop altogether. Let's wrap things
1279 // up, the process is about to be stopped by the WatcherThread.
1280 st->print_cr("------ Timeout during error reporting after " INT64_FORMAT " s. ------",
1281 (get_current_timestamp() - _reporting_start_time) / TIMESTAMP_TO_SECONDS_FACTOR);
1282 st->flush();
1283 // Watcherthread is about to call os::die. Lets just wait.
1284 os::infinite_sleep();
1285 } else {
1286 // Crash or assert during error reporting. Lets continue reporting with the next step.
1287 jio_snprintf(buffer, sizeof(buffer),
1288 "[error occurred during error reporting (%s), id 0x%x]",
1289 _current_step_info, _id);
1290 st->print_raw_cr(buffer);
1291 st->cr();
1292 }
1293 }
1294 }
1295
1296 // print to screen
1297 if (!out_done) {
1298 report(&out, false);
1299
1300 out_done = true;
1301
1302 _current_step = 0;
1303 _current_step_info = "";
1304 }
1305
1306 // print to error log file
1307 if (!log_done) {
1308 // see if log file is already open
1309 if (!log.is_open()) {
1310 // open log file
1311 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1312 if (fd != -1) {
1313 out.print_raw("# An error report file with more information is saved as:\n# ");
1314 out.print_raw_cr(buffer);
1315
1316 log.set_fd(fd);
1317 } else {
1318 out.print_raw_cr("# Can not save log file, dump to screen..");
1319 log.set_fd(defaultStream::output_fd());
1320 /* Error reporting currently needs dumpfile.
1321 * Maybe implement direct streaming in the future.*/
1322 transmit_report_done = true;
1323 }
1324 }
1325
1326 report(&log, true);
1327 log_done = true;
1328 _current_step = 0;
1329 _current_step_info = "";
1330
1331 // Run error reporting to determine whether or not to report the crash.
1332 if (!transmit_report_done && should_report_bug(_id)) {
1333 transmit_report_done = true;
1334 const int fd2 = ::dup(log.fd());
1335 if (fd2 != -1) {
1336 FILE* const hs_err = ::fdopen(fd2, "r");
1337 if (NULL != hs_err) {
1338 ErrorReporter er;
1339 er.call(hs_err, buffer, O_BUFLEN);
1340 ::fclose(hs_err);
1341 }
1342 }
1343 }
1344
1345 if (log.fd() != defaultStream::output_fd()) {
1346 close(log.fd());
1347 }
1348
1349 log.set_fd(-1);
1350 }
1351
1352 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1353 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1354 skip_replay = true;
1355 ciEnv* env = ciEnv::current();
1356 if (env != NULL) {
1357 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1358 if (fd != -1) {
1359 FILE* replay_data_file = os::open(fd, "w");
1360 if (replay_data_file != NULL) {
1361 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1362 env->dump_replay_data_unsafe(&replay_data_stream);
1363 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1364 out.print_raw_cr(buffer);
1365 } else {
1366 int e = errno;
1367 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1368 out.print_raw_cr(os::strerror(e));
1369 }
1370 }
1371 }
1372 }
1373
1374 static bool skip_bug_url = !should_report_bug(_id);
1375 if (!skip_bug_url) {
1376 skip_bug_url = true;
1377
1378 out.print_raw_cr("#");
1379 print_bug_submit_message(&out, _thread);
1380 }
1381
1382 static bool skip_OnError = false;
1383 if (!skip_OnError && OnError && OnError[0]) {
1384 skip_OnError = true;
1385
1386 // Flush output and finish logs before running OnError commands.
1387 ostream_abort();
1388
1389 out.print_raw_cr("#");
1390 out.print_raw ("# -XX:OnError=\"");
1391 out.print_raw (OnError);
1392 out.print_raw_cr("\"");
1393
1394 char* cmd;
1395 const char* ptr = OnError;
1396 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1397 out.print_raw ("# Executing ");
1398 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1399 out.print_raw ("/bin/sh -c ");
1400 #elif defined(SOLARIS)
1401 out.print_raw ("/usr/bin/sh -c ");
1402 #elif defined(WINDOWS)
1403 out.print_raw ("cmd /C ");
1404 #endif
1405 out.print_raw ("\"");
1406 out.print_raw (cmd);
1407 out.print_raw_cr("\" ...");
1408
1409 if (os::fork_and_exec(cmd) < 0) {
1410 out.print_cr("os::fork_and_exec failed: %s (%s=%d)",
1411 os::strerror(errno), os::errno_name(errno), errno);
1412 }
1413 }
1414
1415 // done with OnError
1416 OnError = NULL;
1417 }
1418
1419 if (!UseOSErrorReporting) {
1420 // os::abort() will call abort hooks, try it first.
1421 static bool skip_os_abort = false;
1422 if (!skip_os_abort) {
1423 skip_os_abort = true;
1424 bool dump_core = should_report_bug(_id);
1425 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1426 }
1427
1428 // if os::abort() doesn't abort, try os::die();
1429 os::die();
1430 }
1431 }
1432
1433 /*
1434 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1435 * ensures utilities such as jmap can observe the process is a consistent state.
1436 */
1437 class VM_ReportJavaOutOfMemory : public VM_Operation {
1438 private:
1439 const char* _message;
1440 public:
1441 VM_ReportJavaOutOfMemory(const char* message) { _message = message; }
1442 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1443 void doit();
1444 };
1445
1446 void VM_ReportJavaOutOfMemory::doit() {
1447 // Don't allocate large buffer on stack
1448 static char buffer[O_BUFLEN];
1449
1450 tty->print_cr("#");
1451 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message);
1452 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1453
1454 // make heap parsability
1455 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1456
1457 char* cmd;
1458 const char* ptr = OnOutOfMemoryError;
1459 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1460 tty->print("# Executing ");
1461 #if defined(LINUX)
1462 tty->print ("/bin/sh -c ");
1463 #elif defined(SOLARIS)
1464 tty->print ("/usr/bin/sh -c ");
1465 #endif
1466 tty->print_cr("\"%s\"...", cmd);
1467
1468 if (os::fork_and_exec(cmd) < 0) {
1469 tty->print_cr("os::fork_and_exec failed: %s (%s=%d)",
1470 os::strerror(errno), os::errno_name(errno), errno);
1471 }
1472 }
1473 }
1474
1475 void VMError::report_java_out_of_memory(const char* message) {
1476 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1477 MutexLocker ml(Heap_lock);
1478 VM_ReportJavaOutOfMemory op(message);
1479 VMThread::execute(&op);
1480 }
1481 }
1482
1483 void VMError::show_message_box(char *buf, int buflen) {
1484 bool yes;
1485 do {
1486 error_string(buf, buflen);
1487 yes = os::start_debugging(buf,buflen);
1488 } while (yes);
1489 }
1490
1491 // Timeout handling: check if a timeout happened (either a single step did
1492 // timeout or the whole of error reporting hit ErrorLogTimeout). Interrupt
1493 // the reporting thread if that is the case.
1494 bool VMError::check_timeout() {
1495
1496 if (ErrorLogTimeout == 0) {
1497 return false;
1498 }
1499
1500 // Do not check for timeouts if we still have a message box to show to the
1501 // user or if there are OnError handlers to be run.
1502 if (ShowMessageBoxOnError
1503 || (OnError != NULL && OnError[0] != '\0')
1504 || Arguments::abort_hook() != NULL) {
1505 return false;
1506 }
1507
1508 const jlong reporting_start_time_l = get_reporting_start_time();
1509 const jlong now = get_current_timestamp();
1510 // Timestamp is stored in nanos.
1511 if (reporting_start_time_l > 0) {
1512 const jlong end = reporting_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR;
1513 if (end <= now) {
1514 _reporting_did_timeout = true;
1515 interrupt_reporting_thread();
1516 return true; // global timeout
1517 }
1518 }
1519
1520 const jlong step_start_time_l = get_step_start_time();
1521 if (step_start_time_l > 0) {
1522 // A step times out after a quarter of the total timeout. Steps are mostly fast unless they
1523 // hang for some reason, so this simple rule allows for three hanging step and still
1524 // hopefully leaves time enough for the rest of the steps to finish.
1525 const jlong end = step_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR / 4;
1526 if (end <= now) {
1527 _step_did_timeout = true;
1528 interrupt_reporting_thread();
1529 return false; // (Not a global timeout)
1530 }
1531 }
1532
1533 return false;
1534
1535 }
1536