1 /*
2 * Copyright (c) 2003, 2018, 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 "compiler/compileBroker.hpp"
28 #include "gc_interface/collectedHeap.hpp"
29 #include "prims/whitebox.hpp"
30 #include "runtime/arguments.hpp"
31 #include "runtime/frame.inline.hpp"
32 #include "runtime/init.hpp"
33 #include "runtime/os.hpp"
34 #include "runtime/thread.inline.hpp"
35 #include "runtime/vmThread.hpp"
36 #include "runtime/vm_operations.hpp"
37 #include "services/memTracker.hpp"
38 #include "utilities/debug.hpp"
39 #include "utilities/decoder.hpp"
40 #include "utilities/defaultStream.hpp"
41 #include "utilities/errorReporter.hpp"
42 #include "utilities/events.hpp"
43 #include "utilities/top.hpp"
44 #include "utilities/vmError.hpp"
45
46 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
47
48 // List of environment variables that should be reported in error log file.
49 const char *env_list[] = {
50 // All platforms
51 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
52 "JAVA_COMPILER", "PATH", "USERNAME",
53
54 // Env variables that are defined on Solaris/Linux/BSD
55 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
56 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
57
58 // defined on Linux
59 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
60
61 // defined on Darwin
62 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
63 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
64 "DYLD_INSERT_LIBRARIES",
65
66 // defined on Windows
67 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
68
69 (const char *)0
70 };
71
72 // Fatal error handler for internal errors and crashes.
73 //
74 // The default behavior of fatal error handler is to print a brief message
75 // to standard out (defaultStream::output_fd()), then save detailed information
76 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
77 // threads are having troubles at the same time, only one error is reported.
78 // The thread that is reporting error will abort VM when it is done, all other
79 // threads are blocked forever inside report_and_die().
80
81 // Constructor for crashes
82 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) {
83 _thread = thread;
84 _id = sig;
85 _pc = pc;
86 _siginfo = siginfo;
87 _context = context;
88
89 _verbose = false;
90 _current_step = 0;
91 _current_step_info = NULL;
92
93 _message = NULL;
94 _detail_msg = NULL;
95 _filename = NULL;
96 _lineno = 0;
97
98 _size = 0;
99 }
100
101 // Constructor for internal errors
102 VMError::VMError(Thread* thread, const char* filename, int lineno,
103 const char* message, const char * detail_msg)
104 {
105 _thread = thread;
106 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
107 _filename = filename;
108 _lineno = lineno;
109 _message = message;
110 _detail_msg = detail_msg;
111
112 _verbose = false;
113 _current_step = 0;
114 _current_step_info = NULL;
115
116 _pc = NULL;
117 _siginfo = NULL;
118 _context = NULL;
119
120 _size = 0;
121 }
122
123 // Constructor for OOM errors
124 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size,
125 VMErrorType vm_err_type, const char* message) {
126 _thread = thread;
127 _id = vm_err_type; // Value that's not an OS exception/signal
128 _filename = filename;
129 _lineno = lineno;
130 _message = message;
131 _detail_msg = NULL;
132
133 _verbose = false;
134 _current_step = 0;
135 _current_step_info = NULL;
136
137 _pc = NULL;
138 _siginfo = NULL;
139 _context = NULL;
140
141 _size = size;
142 }
143
144
145 // Constructor for non-fatal errors
146 VMError::VMError(const char* message) {
147 _thread = NULL;
148 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal
149 _filename = NULL;
150 _lineno = 0;
151 _message = message;
152 _detail_msg = NULL;
153
154 _verbose = false;
155 _current_step = 0;
156 _current_step_info = NULL;
157
158 _pc = NULL;
159 _siginfo = NULL;
160 _context = NULL;
161
162 _size = 0;
163 }
164
165 // -XX:OnError=<string>, where <string> can be a list of commands, separated
166 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
167 // a single "%". Some examples:
168 //
169 // -XX:OnError="pmap %p" // show memory map
170 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger
171 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
172 // -XX:OnError="kill -9 %p" // ?#!@#
173
174 // A simple parser for -XX:OnError, usage:
175 // ptr = OnError;
176 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
177 // ... ...
178 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
179 if (ptr == NULL || *ptr == NULL) return NULL;
180
181 const char* cmd = *ptr;
182
183 // skip leading blanks or ';'
184 while (*cmd == ' ' || *cmd == ';') cmd++;
185
186 if (*cmd == '\0') return NULL;
187
188 const char * cmdend = cmd;
189 while (*cmdend != '\0' && *cmdend != ';') cmdend++;
190
191 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
192
193 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
194 return buf;
195 }
196
197
198 static void print_bug_submit_message(outputStream *out, Thread *thread) {
199 if (out == NULL) return;
200 out->print_raw_cr("# If you would like to submit a bug report, please visit:");
201 out->print_raw ("# ");
202 out->print_raw_cr(Arguments::java_vendor_url_bug());
203 // If the crash is in native code, encourage user to submit a bug to the
204 // provider of that code.
205 if (thread && thread->is_Java_thread() &&
206 !thread->is_hidden_from_external_view()) {
207 JavaThread* jt = (JavaThread*)thread;
208 if (jt->thread_state() == _thread_in_native) {
209 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
210 }
211 }
212 out->print_raw_cr("#");
213 }
214
215 bool VMError::coredump_status;
216 char VMError::coredump_message[O_BUFLEN];
217
218 void VMError::report_coredump_status(const char* message, bool status) {
219 coredump_status = status;
220 strncpy(coredump_message, message, sizeof(coredump_message));
221 coredump_message[sizeof(coredump_message)-1] = 0;
222 }
223
224
225 // Return a string to describe the error
226 char* VMError::error_string(char* buf, int buflen) {
227 char signame_buf[64];
228 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
229
230 if (signame) {
231 jio_snprintf(buf, buflen,
232 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" INTPTR_FORMAT,
233 signame, _id, _pc,
234 os::current_process_id(), os::current_thread_id());
235 } else if (_filename != NULL && _lineno > 0) {
236 // skip directory names
237 char separator = os::file_separator()[0];
238 const char *p = strrchr(_filename, separator);
239 int n = jio_snprintf(buf, buflen,
240 "Internal Error at %s:%d, pid=%d, tid=" INTPTR_FORMAT,
241 p ? p + 1 : _filename, _lineno,
242 os::current_process_id(), os::current_thread_id());
243 if (n >= 0 && n < buflen && _message) {
244 if (_detail_msg) {
245 jio_snprintf(buf + n, buflen - n, "%s%s: %s",
246 os::line_separator(), _message, _detail_msg);
247 } else {
248 jio_snprintf(buf + n, buflen - n, "%sError: %s",
249 os::line_separator(), _message);
250 }
251 }
252 } else {
253 jio_snprintf(buf, buflen,
254 "Internal Error (0x%x), pid=%d, tid=" INTPTR_FORMAT,
255 _id, os::current_process_id(), os::current_thread_id());
256 }
257
258 return buf;
259 }
260
261 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
262 char* buf, int buflen, bool verbose) {
263 #ifdef ZERO
264 if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
265 // StackFrameStream uses the frame anchor, which may not have
266 // been set up. This can be done at any time in Zero, however,
267 // so if it hasn't been set up then we just set it up now and
268 // clear it again when we're done.
269 bool has_last_Java_frame = jt->has_last_Java_frame();
270 if (!has_last_Java_frame)
271 jt->set_last_Java_frame();
272 st->print("Java frames:");
273
274 // If the top frame is a Shark frame and the frame anchor isn't
275 // set up then it's possible that the information in the frame
276 // is garbage: it could be from a previous decache, or it could
277 // simply have never been written. So we print a warning...
278 StackFrameStream sfs(jt);
279 if (!has_last_Java_frame && !sfs.is_done()) {
280 if (sfs.current()->zeroframe()->is_shark_frame()) {
281 st->print(" (TOP FRAME MAY BE JUNK)");
282 }
283 }
284 st->cr();
285
286 // Print the frames
287 for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
288 sfs.current()->zero_print_on_error(i, st, buf, buflen);
289 st->cr();
290 }
291
292 // Reset the frame anchor if necessary
293 if (!has_last_Java_frame)
294 jt->reset_last_Java_frame();
295 }
296 #else
297 if (jt->has_last_Java_frame()) {
298 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
299 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
300 sfs.current()->print_on_error(st, buf, buflen, verbose);
301 st->cr();
302 }
303 }
304 #endif // ZERO
305 }
306
307 static void print_oom_reasons(outputStream* st) {
308 st->print_cr("# Possible reasons:");
309 st->print_cr("# The system is out of physical RAM or swap space");
310 if (UseCompressedOops) {
311 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
312 }
313 if (LogBytesPerWord == 2) {
314 st->print_cr("# In 32 bit mode, the process size limit was hit");
315 }
316 st->print_cr("# Possible solutions:");
317 st->print_cr("# Reduce memory load on the system");
318 st->print_cr("# Increase physical memory or swap space");
319 st->print_cr("# Check if swap backing store is full");
320 if (LogBytesPerWord == 2) {
321 st->print_cr("# Use 64 bit Java on a 64 bit OS");
322 }
323 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)");
324 st->print_cr("# Decrease number of Java threads");
325 st->print_cr("# Decrease Java thread stack sizes (-Xss)");
326 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize=");
327 if (UseCompressedOops) {
328 switch (Universe::narrow_oop_mode()) {
329 case Universe::UnscaledNarrowOop:
330 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
331 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the");
332 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
333 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
334 break;
335 case Universe::ZeroBasedNarrowOop:
336 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
337 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the");
338 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
339 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
340 break;
341 default:
342 break;
343 }
344 }
345 st->print_cr("# This output file may be truncated or incomplete.");
346 }
347 // This is the main function to report a fatal error. Only one thread can
348 // call this function, so we don't need to worry about MT-safety. But it's
349 // possible that the error handler itself may crash or die on an internal
350 // error, for example, when the stack/heap is badly damaged. We must be
351 // able to handle recursive errors that happen inside error handler.
352 //
353 // Error reporting is done in several steps. If a crash or internal error
354 // occurred when reporting an error, the nested signal/exception handler
355 // can skip steps that are already (or partially) done. Error reporting will
356 // continue from the next step. This allows us to retrieve and print
357 // information that may be unsafe to get after a fatal error. If it happens,
358 // you may find nested report_and_die() frames when you look at the stack
359 // in a debugger.
360 //
361 // In general, a hang in error handler is much worse than a crash or internal
362 // error, as it's harder to recover from a hang. Deadlock can happen if we
363 // try to grab a lock that is already owned by current thread, or if the
364 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
365 // error handler and all the functions it called should avoid grabbing any
366 // lock. An important thing to notice is that memory allocation needs a lock.
367 //
368 // We should avoid using large stack allocated buffers. Many errors happen
369 // when stack space is already low. Making things even worse is that there
370 // could be nested report_and_die() calls on stack (see above). Only one
371 // thread can report error, so large buffers are statically allocated in data
372 // segment.
373
374 void VMError::report(outputStream* st) {
375 # define BEGIN if (_current_step == 0) { _current_step = 1;
376 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
377 # define END }
378
379 // don't allocate large buffer on stack
380 static char buf[O_BUFLEN];
381
382 BEGIN
383
384 STEP(10, "(printing fatal error message)")
385
386 st->print_cr("#");
387 if (should_report_bug(_id)) {
388 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
389 } else {
390 st->print_cr("# There is insufficient memory for the Java "
391 "Runtime Environment to continue.");
392 }
393
394 STEP(15, "(printing type of error)")
395
396 switch(_id) {
397 case OOM_MALLOC_ERROR:
398 case OOM_MMAP_ERROR:
399 if (_size) {
400 st->print("# Native memory allocation ");
401 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
402 "(mmap) failed to map ");
403 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
404 st->print("%s", buf);
405 st->print(" bytes");
406 if (_message != NULL) {
407 st->print(" for ");
408 st->print("%s", _message);
409 }
410 st->cr();
411 } else {
412 if (_message != NULL)
413 st->print("# ");
414 st->print_cr("%s", _message);
415 }
416 // In error file give some solutions
417 if (_verbose) {
418 print_oom_reasons(st);
419 } else {
420 return; // that's enough for the screen
421 }
422 break;
423 case INTERNAL_ERROR:
424 default:
425 break;
426 }
427
428 STEP(20, "(printing exception/signal name)")
429
430 st->print_cr("#");
431 st->print("# ");
432 // Is it an OS exception/signal?
433 if (os::exception_name(_id, buf, sizeof(buf))) {
434 st->print("%s", buf);
435 st->print(" (0x%x)", _id); // signal number
436 st->print(" at pc=" PTR_FORMAT, _pc);
437 } else {
438 if (should_report_bug(_id)) {
439 st->print("Internal Error");
440 } else {
441 st->print("Out of Memory Error");
442 }
443 if (_filename != NULL && _lineno > 0) {
444 #ifdef PRODUCT
445 // In product mode chop off pathname?
446 char separator = os::file_separator()[0];
447 const char *p = strrchr(_filename, separator);
448 const char *file = p ? p+1 : _filename;
449 #else
450 const char *file = _filename;
451 #endif
452 size_t len = strlen(file);
453 size_t buflen = sizeof(buf);
454
455 strncpy(buf, file, buflen);
456 if (len + 10 < buflen) {
457 sprintf(buf + len, ":%d", _lineno);
458 }
459 st->print(" (%s)", buf);
460 } else {
461 st->print(" (0x%x)", _id);
462 }
463 }
464
465 STEP(30, "(printing current thread and pid)")
466
467 // process id, thread id
468 st->print(", pid=%d", os::current_process_id());
469 st->print(", tid=" INTPTR_FORMAT, os::current_thread_id());
470 st->cr();
471
472 STEP(40, "(printing error message)")
473
474 if (should_report_bug(_id)) { // already printed the message.
475 // error message
476 if (_detail_msg) {
477 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg);
478 } else if (_message) {
479 st->print_cr("# Error: %s", _message);
480 }
481 }
482
483 STEP(50, "(printing Java version string)")
484
485 // VM version
486 st->print_cr("#");
487 JDK_Version::current().to_string(buf, sizeof(buf));
488 const char* runtime_name = JDK_Version::runtime_name() != NULL ?
489 JDK_Version::runtime_name() : "";
490 const char* runtime_version = JDK_Version::runtime_version() != NULL ?
491 JDK_Version::runtime_version() : "";
492 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version);
493 st->print_cr("# Java VM: %s (%s %s %s %s)",
494 Abstract_VM_Version::vm_name(),
495 Abstract_VM_Version::vm_release(),
496 Abstract_VM_Version::vm_info_string(),
497 Abstract_VM_Version::vm_platform_string(),
498 UseCompressedOops ? "compressed oops" : ""
499 );
500
501 STEP(60, "(printing problematic frame)")
502
503 // Print current frame if we have a context (i.e. it's a crash)
504 if (_context) {
505 st->print_cr("# Problematic frame:");
506 st->print("# ");
507 frame fr = os::fetch_frame_from_context(_context);
508 fr.print_on_error(st, buf, sizeof(buf));
509 st->cr();
510 st->print_cr("#");
511 }
512 STEP(63, "(printing core file information)")
513 st->print("# ");
514 if (coredump_status) {
515 st->print("Core dump written. Default location: %s", coredump_message);
516 } else {
517 st->print("Failed to write core dump. %s", coredump_message);
518 }
519 st->cr();
520 st->print_cr("#");
521
522 STEP(65, "(printing bug submit message)")
523
524 if (should_report_bug(_id) && _verbose) {
525 print_bug_submit_message(st, _thread);
526 }
527
528 STEP(70, "(printing thread)" )
529
530 if (_verbose) {
531 st->cr();
532 st->print_cr("--------------- T H R E A D ---------------");
533 st->cr();
534 }
535
536 STEP(80, "(printing current thread)" )
537
538 // current thread
539 if (_verbose) {
540 if (_thread) {
541 st->print("Current thread (" PTR_FORMAT "): ", _thread);
542 _thread->print_on_error(st, buf, sizeof(buf));
543 st->cr();
544 } else {
545 st->print_cr("Current thread is native thread");
546 }
547 st->cr();
548 }
549
550 STEP(90, "(printing siginfo)" )
551
552 // signal no, signal code, address that caused the fault
553 if (_verbose && _siginfo) {
554 st->cr();
555 os::print_siginfo(st, _siginfo);
556 st->cr();
557 }
558
559 STEP(100, "(printing registers, top of stack, instructions near pc)")
560
561 // registers, top of stack, instructions near pc
562 if (_verbose && _context) {
563 os::print_context(st, _context);
564 st->cr();
565 }
566
567 STEP(105, "(printing register info)")
568
569 // decode register contents if possible
570 if (_verbose && _context && Universe::is_fully_initialized()) {
571 os::print_register_info(st, _context);
572 st->cr();
573 }
574
575 STEP(110, "(printing stack bounds)" )
576
577 if (_verbose) {
578 st->print("Stack: ");
579
580 address stack_top;
581 size_t stack_size;
582
583 if (_thread) {
584 stack_top = _thread->stack_base();
585 stack_size = _thread->stack_size();
586 } else {
587 stack_top = os::current_stack_base();
588 stack_size = os::current_stack_size();
589 }
590
591 address stack_bottom = stack_top - stack_size;
592 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
593
594 frame fr = _context ? os::fetch_frame_from_context(_context)
595 : os::current_frame();
596
597 if (fr.sp()) {
598 st->print(", sp=" PTR_FORMAT, fr.sp());
599 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
600 st->print(", free space=" SIZE_FORMAT "k", free_stack_size);
601 }
602
603 st->cr();
604 }
605
606 STEP(120, "(printing native stack)" )
607
608 if (_verbose) {
609 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
610 // We have printed the native stack in platform-specific code
611 // Windows/x64 needs special handling.
612 } else {
613 frame fr = _context ? os::fetch_frame_from_context(_context)
614 : os::current_frame();
615
616 print_native_stack(st, fr, _thread, buf, sizeof(buf));
617 }
618 }
619
620 STEP(130, "(printing Java stack)" )
621
622 if (_verbose && _thread && _thread->is_Java_thread()) {
623 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
624 }
625
626 STEP(135, "(printing target Java thread stack)" )
627
628 // printing Java thread stack trace if it is involved in GC crash
629 if (_verbose && _thread && (_thread->is_Named_thread())) {
630 JavaThread* jt = ((NamedThread *)_thread)->processed_thread();
631 if (jt != NULL) {
632 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
633 print_stack_trace(st, jt, buf, sizeof(buf), true);
634 }
635 }
636
637 STEP(140, "(printing VM operation)" )
638
639 if (_verbose && _thread && _thread->is_VM_thread()) {
640 VMThread* t = (VMThread*)_thread;
641 VM_Operation* op = t->vm_operation();
642 if (op) {
643 op->print_on_error(st);
644 st->cr();
645 st->cr();
646 }
647 }
648
649 STEP(150, "(printing current compile task)" )
650
651 if (_verbose && _thread && _thread->is_Compiler_thread()) {
652 CompilerThread* t = (CompilerThread*)_thread;
653 if (t->task()) {
654 st->cr();
655 st->print_cr("Current CompileTask:");
656 t->task()->print_line_on_error(st, buf, sizeof(buf));
657 st->cr();
658 }
659 }
660
661 STEP(160, "(printing process)" )
662
663 if (_verbose) {
664 st->cr();
665 st->print_cr("--------------- P R O C E S S ---------------");
666 st->cr();
667 }
668
669 STEP(170, "(printing all threads)" )
670
671 // all threads
672 if (_verbose && _thread) {
673 Threads::print_on_error(st, _thread, buf, sizeof(buf));
674 st->cr();
675 }
676
677 STEP(175, "(printing VM state)" )
678
679 if (_verbose) {
680 // Safepoint state
681 st->print("VM state:");
682
683 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
684 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
685 else st->print("not at safepoint");
686
687 // Also see if error occurred during initialization or shutdown
688 if (!Universe::is_fully_initialized()) {
689 st->print(" (not fully initialized)");
690 } else if (VM_Exit::vm_exited()) {
691 st->print(" (shutting down)");
692 } else {
693 st->print(" (normal execution)");
694 }
695 st->cr();
696 st->cr();
697 }
698
699 STEP(180, "(printing owned locks on error)" )
700
701 // mutexes/monitors that currently have an owner
702 if (_verbose) {
703 print_owned_locks_on_error(st);
704 st->cr();
705 }
706
707 STEP(190, "(printing heap information)" )
708
709 if (_verbose && Universe::is_fully_initialized()) {
710 Universe::heap()->print_on_error(st);
711 st->cr();
712
713 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
714 st->cr();
715 }
716
717 STEP(195, "(printing code cache information)" )
718
719 if (_verbose && Universe::is_fully_initialized()) {
720 // print code cache information before vm abort
721 CodeCache::print_summary(st);
722 st->cr();
723 }
724
725 STEP(200, "(printing ring buffers)" )
726
727 if (_verbose) {
728 Events::print_all(st);
729 st->cr();
730 }
731
732 STEP(205, "(printing dynamic libraries)" )
733
734 if (_verbose) {
735 // dynamic libraries, or memory map
736 os::print_dll_info(st);
737 st->cr();
738 }
739
740 STEP(210, "(printing VM options)" )
741
742 if (_verbose) {
743 // VM options
744 Arguments::print_on(st);
745 st->cr();
746 }
747
748 STEP(215, "(printing warning if internal testing API used)" )
749
750 if (WhiteBox::used()) {
751 st->print_cr("Unsupported internal testing APIs have been used.");
752 st->cr();
753 }
754
755 STEP(220, "(printing environment variables)" )
756
757 if (_verbose) {
758 os::print_environment_variables(st, env_list, buf, sizeof(buf));
759 st->cr();
760 }
761
762 STEP(225, "(printing signal handlers)" )
763
764 if (_verbose) {
765 os::print_signal_handlers(st, buf, sizeof(buf));
766 st->cr();
767 }
768
769 STEP(228, "(Native Memory Tracking)" )
770 if (_verbose) {
771 MemTracker::error_report(st);
772 }
773
774 STEP(230, "" )
775
776 if (_verbose) {
777 st->cr();
778 st->print_cr("--------------- S Y S T E M ---------------");
779 st->cr();
780 }
781
782 STEP(240, "(printing OS information)" )
783
784 if (_verbose) {
785 os::print_os_info(st);
786 st->cr();
787 }
788
789 STEP(250, "(printing CPU info)" )
790 if (_verbose) {
791 os::print_cpu_info(st);
792 st->cr();
793 }
794
795 STEP(260, "(printing memory info)" )
796
797 if (_verbose) {
798 os::print_memory_info(st);
799 st->cr();
800 }
801
802 STEP(270, "(printing internal vm info)" )
803
804 if (_verbose) {
805 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
806 st->cr();
807 }
808
809 STEP(280, "(printing date and time)" )
810
811 if (_verbose) {
812 os::print_date_and_time(st);
813 st->cr();
814 }
815
816 END
817
818 # undef BEGIN
819 # undef STEP
820 # undef END
821 }
822
823 VMError* volatile VMError::first_error = NULL;
824 volatile jlong VMError::first_error_tid = -1;
825
826 // An error could happen before tty is initialized or after it has been
827 // destroyed. Here we use a very simple unbuffered fdStream for printing.
828 // Only out.print_raw() and out.print_raw_cr() should be used, as other
829 // printing methods need to allocate large buffer on stack. To format a
830 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
831 fdStream VMError::out(defaultStream::output_fd());
832 fdStream VMError::log; // error log used by VMError::report_and_die()
833
834 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
835 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
836 int fd = -1;
837 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
838 // the O_EXCL flag will cause the open to fail if the file exists
839 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
840 }
841 return fd;
842 }
843
844 /**
845 * Construct file name for a log file and return it's file descriptor.
846 * Name and location depends on pattern, default_pattern params and access
847 * permissions.
848 */
849 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
850 int fd = -1;
851
852 // If possible, use specified pattern to construct log file name
853 if (pattern != NULL) {
854 fd = expand_and_open(pattern, buf, buflen, 0);
855 }
856
857 // Either user didn't specify, or the user's location failed,
858 // so use the default name in the current directory
859 if (fd == -1) {
860 const char* cwd = os::get_current_directory(buf, buflen);
861 if (cwd != NULL) {
862 size_t pos = strlen(cwd);
863 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
864 pos += fsep_len;
865 if (fsep_len > 0) {
866 fd = expand_and_open(default_pattern, buf, buflen, pos);
867 }
868 }
869 }
870
871 // try temp directory if it exists.
872 if (fd == -1) {
873 const char* tmpdir = os::get_temp_directory();
874 if (tmpdir != NULL && strlen(tmpdir) > 0) {
875 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
876 if (pos > 0) {
877 fd = expand_and_open(default_pattern, buf, buflen, pos);
878 }
879 }
880 }
881
882 return fd;
883 }
884
885 void VMError::report_and_die() {
886 // Don't allocate large buffer on stack
887 static char buffer[O_BUFLEN];
888
889 // How many errors occurred in error handler when reporting first_error.
890 static int recursive_error_count;
891
892 // We will first print a brief message to standard out (verbose = false),
893 // then save detailed information in log file (verbose = true).
894 static bool out_done = false; // done printing to standard out
895 static bool log_done = false; // done saving error log
896 static bool transmit_report_done = false; // done error reporting
897
898 if (SuppressFatalErrorMessage) {
899 os::abort();
900 }
901 jlong mytid = os::current_thread_id();
902 if (first_error == NULL &&
903 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
904
905 // first time
906 first_error_tid = mytid;
907 set_error_reported();
908
909 if (ShowMessageBoxOnError || PauseAtExit) {
910 show_message_box(buffer, sizeof(buffer));
911
912 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
913 // WatcherThread can kill JVM if the error handler hangs.
914 ShowMessageBoxOnError = false;
915 }
916
917 // Write a minidump on Windows, check core dump limits on Linux/Solaris
918 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer));
919
920 // reset signal handlers or exception filter; make sure recursive crashes
921 // are handled properly.
922 reset_signal_handlers();
923
924 } else {
925 // If UseOsErrorReporting we call this for each level of the call stack
926 // while searching for the exception handler. Only the first level needs
927 // to be reported.
928 if (UseOSErrorReporting && log_done) return;
929
930 // This is not the first error, see if it happened in a different thread
931 // or in the same thread during error reporting.
932 if (first_error_tid != mytid) {
933 char msgbuf[64];
934 jio_snprintf(msgbuf, sizeof(msgbuf),
935 "[thread " INT64_FORMAT " also had an error]",
936 mytid);
937 out.print_raw_cr(msgbuf);
938
939 // error reporting is not MT-safe, block current thread
940 os::infinite_sleep();
941
942 } else {
943 if (recursive_error_count++ > 30) {
944 out.print_raw_cr("[Too many errors, abort]");
945 os::die();
946 }
947
948 jio_snprintf(buffer, sizeof(buffer),
949 "[error occurred during error reporting %s, id 0x%x]",
950 first_error ? first_error->_current_step_info : "",
951 _id);
952 if (log.is_open()) {
953 log.cr();
954 log.print_raw_cr(buffer);
955 log.cr();
956 } else {
957 out.cr();
958 out.print_raw_cr(buffer);
959 out.cr();
960 }
961 }
962 }
963
964 // print to screen
965 if (!out_done) {
966 first_error->_verbose = false;
967
968 staticBufferStream sbs(buffer, sizeof(buffer), &out);
969 first_error->report(&sbs);
970
971 out_done = true;
972
973 first_error->_current_step = 0; // reset current_step
974 first_error->_current_step_info = ""; // reset current_step string
975 }
976
977 // print to error log file
978 if (!log_done) {
979 first_error->_verbose = true;
980
981 // see if log file is already open
982 if (!log.is_open()) {
983 // open log file
984 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
985 if (fd != -1) {
986 out.print_raw("# An error report file with more information is saved as:\n# ");
987 out.print_raw_cr(buffer);
988
989 log.set_fd(fd);
990 } else {
991 out.print_raw_cr("# Can not save log file, dump to screen..");
992 log.set_fd(defaultStream::output_fd());
993 /* Error reporting currently needs dumpfile.
994 * Maybe implement direct streaming in the future.*/
995 transmit_report_done = true;
996 }
997 }
998
999 staticBufferStream sbs(buffer, O_BUFLEN, &log);
1000 first_error->report(&sbs);
1001 first_error->_current_step = 0; // reset current_step
1002 first_error->_current_step_info = ""; // reset current_step string
1003
1004 // Run error reporting to determine whether or not to report the crash.
1005 if (!transmit_report_done && should_report_bug(first_error->_id)) {
1006 transmit_report_done = true;
1007 FILE* hs_err = os::open(log.fd(), "r");
1008 if (NULL != hs_err) {
1009 ErrorReporter er;
1010 er.call(hs_err, buffer, O_BUFLEN);
1011 }
1012 }
1013
1014 if (log.fd() != defaultStream::output_fd()) {
1015 close(log.fd());
1016 }
1017
1018 log.set_fd(-1);
1019 log_done = true;
1020 }
1021
1022
1023 static bool skip_OnError = false;
1024 if (!skip_OnError && OnError && OnError[0]) {
1025 skip_OnError = true;
1026
1027 out.print_raw_cr("#");
1028 out.print_raw ("# -XX:OnError=\"");
1029 out.print_raw (OnError);
1030 out.print_raw_cr("\"");
1031
1032 char* cmd;
1033 const char* ptr = OnError;
1034 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1035 out.print_raw ("# Executing ");
1036 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1037 out.print_raw ("/bin/sh -c ");
1038 #elif defined(SOLARIS)
1039 out.print_raw ("/usr/bin/sh -c ");
1040 #endif
1041 out.print_raw ("\"");
1042 out.print_raw (cmd);
1043 out.print_raw_cr("\" ...");
1044
1045 if (os::fork_and_exec(cmd) < 0) {
1046 out.print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1047 }
1048 }
1049
1050 // done with OnError
1051 OnError = NULL;
1052 }
1053
1054 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1055 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1056 skip_replay = true;
1057 ciEnv* env = ciEnv::current();
1058 if (env != NULL) {
1059 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1060 if (fd != -1) {
1061 FILE* replay_data_file = os::open(fd, "w");
1062 if (replay_data_file != NULL) {
1063 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1064 env->dump_replay_data_unsafe(&replay_data_stream);
1065 out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1066 out.print_raw_cr(buffer);
1067 } else {
1068 out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1069 out.print_raw_cr(strerror(os::get_last_error()));
1070 }
1071 }
1072 }
1073 }
1074
1075 static bool skip_bug_url = !should_report_bug(first_error->_id);
1076 if (!skip_bug_url) {
1077 skip_bug_url = true;
1078
1079 out.print_raw_cr("#");
1080 print_bug_submit_message(&out, _thread);
1081 }
1082
1083 if (!UseOSErrorReporting) {
1084 // os::abort() will call abort hooks, try it first.
1085 static bool skip_os_abort = false;
1086 if (!skip_os_abort) {
1087 skip_os_abort = true;
1088 bool dump_core = should_report_bug(first_error->_id);
1089 os::abort(dump_core);
1090 }
1091
1092 // if os::abort() doesn't abort, try os::die();
1093 os::die();
1094 }
1095 }
1096
1097 /*
1098 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1099 * ensures utilities such as jmap can observe the process is a consistent state.
1100 */
1101 class VM_ReportJavaOutOfMemory : public VM_Operation {
1102 private:
1103 VMError *_err;
1104 public:
1105 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
1106 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; }
1107 void doit();
1108 };
1109
1110 void VM_ReportJavaOutOfMemory::doit() {
1111 // Don't allocate large buffer on stack
1112 static char buffer[O_BUFLEN];
1113
1114 tty->print_cr("#");
1115 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
1116 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1117
1118 // make heap parsability
1119 Universe::heap()->ensure_parsability(false); // no need to retire TLABs
1120
1121 char* cmd;
1122 const char* ptr = OnOutOfMemoryError;
1123 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1124 tty->print("# Executing ");
1125 #if defined(LINUX)
1126 tty->print ("/bin/sh -c ");
1127 #elif defined(SOLARIS)
1128 tty->print ("/usr/bin/sh -c ");
1129 #endif
1130 tty->print_cr("\"%s\"...", cmd);
1131
1132 if (os::fork_and_exec(cmd) < 0) {
1133 tty->print_cr("os::fork_and_exec failed: %s (%d)", strerror(errno), errno);
1134 }
1135 }
1136 }
1137
1138 void VMError::report_java_out_of_memory() {
1139 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1140 MutexLocker ml(Heap_lock);
1141 VM_ReportJavaOutOfMemory op(this);
1142 VMThread::execute(&op);
1143 }
1144 }