1 /* 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "compiler/compileBroker.hpp" 27 #include "gc_interface/collectedHeap.hpp" 28 #include "runtime/arguments.hpp" 29 #include "runtime/frame.inline.hpp" 30 #include "runtime/init.hpp" 31 #include "runtime/os.hpp" 32 #include "runtime/thread.hpp" 33 #include "runtime/vmThread.hpp" 34 #include "runtime/vm_operations.hpp" 35 #include "utilities/debug.hpp" 36 #include "utilities/defaultStream.hpp" 37 #include "utilities/top.hpp" 38 #include "utilities/vmError.hpp" 39 40 // List of environment variables that should be reported in error log file. 41 const char *env_list[] = { 42 // All platforms 43 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 44 "JAVA_COMPILER", "PATH", "USERNAME", 45 46 // Env variables that are defined on Solaris/Linux 47 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 48 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 49 50 // defined on Linux 51 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 52 53 // defined on Windows 54 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 55 56 (const char *)0 57 }; 58 59 // Fatal error handler for internal errors and crashes. 60 // 61 // The default behavior of fatal error handler is to print a brief message 62 // to standard out (defaultStream::output_fd()), then save detailed information 63 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple 64 // threads are having troubles at the same time, only one error is reported. 65 // The thread that is reporting error will abort VM when it is done, all other 66 // threads are blocked forever inside report_and_die(). 67 68 // Constructor for crashes 69 VMError::VMError(Thread* thread, int sig, address pc, void* siginfo, void* context) { 70 _thread = thread; 71 _id = sig; 72 _pc = pc; 73 _siginfo = siginfo; 74 _context = context; 75 76 _verbose = false; 77 _current_step = 0; 78 _current_step_info = NULL; 79 80 _message = NULL; 81 _detail_msg = NULL; 82 _filename = NULL; 83 _lineno = 0; 84 85 _size = 0; 86 } 87 88 // Constructor for internal errors 89 VMError::VMError(Thread* thread, const char* filename, int lineno, 90 const char* message, const char * detail_msg) 91 { 92 _thread = thread; 93 _id = internal_error; // Value that's not an OS exception/signal 94 _filename = filename; 95 _lineno = lineno; 96 _message = message; 97 _detail_msg = detail_msg; 98 99 _verbose = false; 100 _current_step = 0; 101 _current_step_info = NULL; 102 103 _pc = NULL; 104 _siginfo = NULL; 105 _context = NULL; 106 107 _size = 0; 108 } 109 110 // Constructor for OOM errors 111 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size, 112 const char* message) { 113 _thread = thread; 114 _id = oom_error; // Value that's not an OS exception/signal 115 _filename = filename; 116 _lineno = lineno; 117 _message = message; 118 _detail_msg = NULL; 119 120 _verbose = false; 121 _current_step = 0; 122 _current_step_info = NULL; 123 124 _pc = NULL; 125 _siginfo = NULL; 126 _context = NULL; 127 128 _size = size; 129 } 130 131 132 // Constructor for non-fatal errors 133 VMError::VMError(const char* message) { 134 _thread = NULL; 135 _id = internal_error; // Value that's not an OS exception/signal 136 _filename = NULL; 137 _lineno = 0; 138 _message = message; 139 _detail_msg = NULL; 140 141 _verbose = false; 142 _current_step = 0; 143 _current_step_info = NULL; 144 145 _pc = NULL; 146 _siginfo = NULL; 147 _context = NULL; 148 149 _size = 0; 150 } 151 152 // -XX:OnError=<string>, where <string> can be a list of commands, separated 153 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by 154 // a single "%". Some examples: 155 // 156 // -XX:OnError="pmap %p" // show memory map 157 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger 158 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com" 159 // -XX:OnError="kill -9 %p" // ?#!@# 160 161 // A simple parser for -XX:OnError, usage: 162 // ptr = OnError; 163 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 164 // ... ... 165 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 166 if (ptr == NULL || *ptr == NULL) return NULL; 167 168 const char* cmd = *ptr; 169 170 // skip leading blanks or ';' 171 while (*cmd == ' ' || *cmd == ';') cmd++; 172 173 if (*cmd == '\0') return NULL; 174 175 const char * cmdend = cmd; 176 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 177 178 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 179 180 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 181 return buf; 182 } 183 184 185 static void print_bug_submit_message(outputStream *out, Thread *thread) { 186 if (out == NULL) return; 187 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 188 out->print_raw ("# "); 189 out->print_raw_cr(Arguments::java_vendor_url_bug()); 190 // If the crash is in native code, encourage user to submit a bug to the 191 // provider of that code. 192 if (thread && thread->is_Java_thread() && 193 !thread->is_hidden_from_external_view()) { 194 JavaThread* jt = (JavaThread*)thread; 195 if (jt->thread_state() == _thread_in_native) { 196 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 197 } 198 } 199 out->print_raw_cr("#"); 200 } 201 202 203 // Return a string to describe the error 204 char* VMError::error_string(char* buf, int buflen) { 205 char signame_buf[64]; 206 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 207 208 if (signame) { 209 jio_snprintf(buf, buflen, 210 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 211 signame, _id, _pc, 212 os::current_process_id(), os::current_thread_id()); 213 } else if (_filename != NULL && _lineno > 0) { 214 // skip directory names 215 char separator = os::file_separator()[0]; 216 const char *p = strrchr(_filename, separator); 217 int n = jio_snprintf(buf, buflen, 218 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 219 p ? p + 1 : _filename, _lineno, 220 os::current_process_id(), os::current_thread_id()); 221 if (n >= 0 && n < buflen && _message) { 222 if (_detail_msg) { 223 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 224 os::line_separator(), _message, _detail_msg); 225 } else { 226 jio_snprintf(buf + n, buflen - n, "%sError: %s", 227 os::line_separator(), _message); 228 } 229 } 230 } else { 231 jio_snprintf(buf, buflen, 232 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 233 _id, os::current_process_id(), os::current_thread_id()); 234 } 235 236 return buf; 237 } 238 239 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 240 char* buf, int buflen, bool verbose) { 241 #ifdef ZERO 242 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 243 // StackFrameStream uses the frame anchor, which may not have 244 // been set up. This can be done at any time in Zero, however, 245 // so if it hasn't been set up then we just set it up now and 246 // clear it again when we're done. 247 bool has_last_Java_frame = jt->has_last_Java_frame(); 248 if (!has_last_Java_frame) 249 jt->set_last_Java_frame(); 250 st->print("Java frames:"); 251 252 // If the top frame is a Shark frame and the frame anchor isn't 253 // set up then it's possible that the information in the frame 254 // is garbage: it could be from a previous decache, or it could 255 // simply have never been written. So we print a warning... 256 StackFrameStream sfs(jt); 257 if (!has_last_Java_frame && !sfs.is_done()) { 258 if (sfs.current()->zeroframe()->is_shark_frame()) { 259 st->print(" (TOP FRAME MAY BE JUNK)"); 260 } 261 } 262 st->cr(); 263 264 // Print the frames 265 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 266 sfs.current()->zero_print_on_error(i, st, buf, buflen); 267 st->cr(); 268 } 269 270 // Reset the frame anchor if necessary 271 if (!has_last_Java_frame) 272 jt->reset_last_Java_frame(); 273 } 274 #else 275 if (jt->has_last_Java_frame()) { 276 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 277 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 278 sfs.current()->print_on_error(st, buf, buflen, verbose); 279 st->cr(); 280 } 281 } 282 #endif // ZERO 283 } 284 285 // This is the main function to report a fatal error. Only one thread can 286 // call this function, so we don't need to worry about MT-safety. But it's 287 // possible that the error handler itself may crash or die on an internal 288 // error, for example, when the stack/heap is badly damaged. We must be 289 // able to handle recursive errors that happen inside error handler. 290 // 291 // Error reporting is done in several steps. If a crash or internal error 292 // occurred when reporting an error, the nested signal/exception handler 293 // can skip steps that are already (or partially) done. Error reporting will 294 // continue from the next step. This allows us to retrieve and print 295 // information that may be unsafe to get after a fatal error. If it happens, 296 // you may find nested report_and_die() frames when you look at the stack 297 // in a debugger. 298 // 299 // In general, a hang in error handler is much worse than a crash or internal 300 // error, as it's harder to recover from a hang. Deadlock can happen if we 301 // try to grab a lock that is already owned by current thread, or if the 302 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 303 // error handler and all the functions it called should avoid grabbing any 304 // lock. An important thing to notice is that memory allocation needs a lock. 305 // 306 // We should avoid using large stack allocated buffers. Many errors happen 307 // when stack space is already low. Making things even worse is that there 308 // could be nested report_and_die() calls on stack (see above). Only one 309 // thread can report error, so large buffers are statically allocated in data 310 // segment. 311 312 void VMError::report(outputStream* st) { 313 # define BEGIN if (_current_step == 0) { _current_step = 1; 314 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 315 # define END } 316 317 // don't allocate large buffer on stack 318 static char buf[O_BUFLEN]; 319 320 BEGIN 321 322 STEP(10, "(printing fatal error message)") 323 324 st->print_cr("#"); 325 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 326 327 STEP(15, "(printing type of error)") 328 329 switch(_id) { 330 case oom_error: 331 st->print_cr("#"); 332 st->print("# java.lang.OutOfMemoryError: "); 333 if (_size) { 334 st->print("requested "); 335 sprintf(buf,SIZE_FORMAT,_size); 336 st->print(buf); 337 st->print(" bytes"); 338 if (_message != NULL) { 339 st->print(" for "); 340 st->print(_message); 341 } 342 st->print_cr(". Out of swap space?"); 343 } else { 344 if (_message != NULL) 345 st->print_cr(_message); 346 } 347 break; 348 case internal_error: 349 default: 350 break; 351 } 352 353 STEP(20, "(printing exception/signal name)") 354 355 st->print_cr("#"); 356 st->print("# "); 357 // Is it an OS exception/signal? 358 if (os::exception_name(_id, buf, sizeof(buf))) { 359 st->print("%s", buf); 360 st->print(" (0x%x)", _id); // signal number 361 st->print(" at pc=" PTR_FORMAT, _pc); 362 } else { 363 st->print("Internal Error"); 364 if (_filename != NULL && _lineno > 0) { 365 #ifdef PRODUCT 366 // In product mode chop off pathname? 367 char separator = os::file_separator()[0]; 368 const char *p = strrchr(_filename, separator); 369 const char *file = p ? p+1 : _filename; 370 #else 371 const char *file = _filename; 372 #endif 373 size_t len = strlen(file); 374 size_t buflen = sizeof(buf); 375 376 strncpy(buf, file, buflen); 377 if (len + 10 < buflen) { 378 sprintf(buf + len, ":%d", _lineno); 379 } 380 st->print(" (%s)", buf); 381 } else { 382 st->print(" (0x%x)", _id); 383 } 384 } 385 386 STEP(30, "(printing current thread and pid)") 387 388 // process id, thread id 389 st->print(", pid=%d", os::current_process_id()); 390 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 391 st->cr(); 392 393 STEP(40, "(printing error message)") 394 395 // error message 396 if (_detail_msg) { 397 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 398 } else if (_message) { 399 st->print_cr("# Error: %s", _message); 400 } 401 402 STEP(50, "(printing Java version string)") 403 404 // VM version 405 st->print_cr("#"); 406 JDK_Version::current().to_string(buf, sizeof(buf)); 407 st->print_cr("# JRE version: %s", buf); 408 st->print_cr("# Java VM: %s (%s %s %s %s)", 409 Abstract_VM_Version::vm_name(), 410 Abstract_VM_Version::vm_release(), 411 Abstract_VM_Version::vm_info_string(), 412 Abstract_VM_Version::vm_platform_string(), 413 UseCompressedOops ? "compressed oops" : "" 414 ); 415 416 STEP(60, "(printing problematic frame)") 417 418 // Print current frame if we have a context (i.e. it's a crash) 419 if (_context) { 420 st->print_cr("# Problematic frame:"); 421 st->print("# "); 422 frame fr = os::fetch_frame_from_context(_context); 423 fr.print_on_error(st, buf, sizeof(buf)); 424 st->cr(); 425 st->print_cr("#"); 426 } 427 428 STEP(65, "(printing bug submit message)") 429 430 if (_verbose) print_bug_submit_message(st, _thread); 431 432 STEP(70, "(printing thread)" ) 433 434 if (_verbose) { 435 st->cr(); 436 st->print_cr("--------------- T H R E A D ---------------"); 437 st->cr(); 438 } 439 440 STEP(80, "(printing current thread)" ) 441 442 // current thread 443 if (_verbose) { 444 if (_thread) { 445 st->print("Current thread (" PTR_FORMAT "): ", _thread); 446 _thread->print_on_error(st, buf, sizeof(buf)); 447 st->cr(); 448 } else { 449 st->print_cr("Current thread is native thread"); 450 } 451 st->cr(); 452 } 453 454 STEP(90, "(printing siginfo)" ) 455 456 // signal no, signal code, address that caused the fault 457 if (_verbose && _siginfo) { 458 os::print_siginfo(st, _siginfo); 459 st->cr(); 460 } 461 462 STEP(100, "(printing registers, top of stack, instructions near pc)") 463 464 // registers, top of stack, instructions near pc 465 if (_verbose && _context) { 466 os::print_context(st, _context); 467 st->cr(); 468 } 469 470 STEP(110, "(printing stack bounds)" ) 471 472 if (_verbose) { 473 st->print("Stack: "); 474 475 address stack_top; 476 size_t stack_size; 477 478 if (_thread) { 479 stack_top = _thread->stack_base(); 480 stack_size = _thread->stack_size(); 481 } else { 482 stack_top = os::current_stack_base(); 483 stack_size = os::current_stack_size(); 484 } 485 486 address stack_bottom = stack_top - stack_size; 487 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 488 489 frame fr = _context ? os::fetch_frame_from_context(_context) 490 : os::current_frame(); 491 492 if (fr.sp()) { 493 st->print(", sp=" PTR_FORMAT, fr.sp()); 494 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 495 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 496 } 497 498 st->cr(); 499 } 500 501 STEP(120, "(printing native stack)" ) 502 503 if (_verbose) { 504 frame fr = _context ? os::fetch_frame_from_context(_context) 505 : os::current_frame(); 506 507 // see if it's a valid frame 508 if (fr.pc()) { 509 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)"); 510 511 int count = 0; 512 513 while (count++ < StackPrintLimit) { 514 fr.print_on_error(st, buf, sizeof(buf)); 515 st->cr(); 516 if (os::is_first_C_frame(&fr)) break; 517 fr = os::get_sender_for_C_frame(&fr); 518 } 519 520 if (count > StackPrintLimit) { 521 st->print_cr("...<more frames>..."); 522 } 523 524 st->cr(); 525 } 526 } 527 528 STEP(130, "(printing Java stack)" ) 529 530 if (_verbose && _thread && _thread->is_Java_thread()) { 531 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 532 } 533 534 STEP(135, "(printing target Java thread stack)" ) 535 536 // printing Java thread stack trace if it is involved in GC crash 537 if (_verbose && (_thread->is_Named_thread())) { 538 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 539 if (jt != NULL) { 540 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 541 print_stack_trace(st, jt, buf, sizeof(buf), true); 542 } 543 } 544 545 STEP(140, "(printing VM operation)" ) 546 547 if (_verbose && _thread && _thread->is_VM_thread()) { 548 VMThread* t = (VMThread*)_thread; 549 VM_Operation* op = t->vm_operation(); 550 if (op) { 551 op->print_on_error(st); 552 st->cr(); 553 st->cr(); 554 } 555 } 556 557 STEP(150, "(printing current compile task)" ) 558 559 if (_verbose && _thread && _thread->is_Compiler_thread()) { 560 CompilerThread* t = (CompilerThread*)_thread; 561 if (t->task()) { 562 st->cr(); 563 st->print_cr("Current CompileTask:"); 564 t->task()->print_line_on_error(st, buf, sizeof(buf)); 565 st->cr(); 566 } 567 } 568 569 STEP(160, "(printing process)" ) 570 571 if (_verbose) { 572 st->cr(); 573 st->print_cr("--------------- P R O C E S S ---------------"); 574 st->cr(); 575 } 576 577 STEP(170, "(printing all threads)" ) 578 579 // all threads 580 if (_verbose && _thread) { 581 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 582 st->cr(); 583 } 584 585 STEP(175, "(printing VM state)" ) 586 587 if (_verbose) { 588 // Safepoint state 589 st->print("VM state:"); 590 591 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 592 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 593 else st->print("not at safepoint"); 594 595 // Also see if error occurred during initialization or shutdown 596 if (!Universe::is_fully_initialized()) { 597 st->print(" (not fully initialized)"); 598 } else if (VM_Exit::vm_exited()) { 599 st->print(" (shutting down)"); 600 } else { 601 st->print(" (normal execution)"); 602 } 603 st->cr(); 604 st->cr(); 605 } 606 607 STEP(180, "(printing owned locks on error)" ) 608 609 // mutexes/monitors that currently have an owner 610 if (_verbose) { 611 print_owned_locks_on_error(st); 612 st->cr(); 613 } 614 615 STEP(190, "(printing heap information)" ) 616 617 if (_verbose && Universe::is_fully_initialized()) { 618 // print heap information before vm abort 619 Universe::print_on(st); 620 st->cr(); 621 } 622 623 STEP(200, "(printing dynamic libraries)" ) 624 625 if (_verbose) { 626 // dynamic libraries, or memory map 627 os::print_dll_info(st); 628 st->cr(); 629 } 630 631 STEP(210, "(printing VM options)" ) 632 633 if (_verbose) { 634 // VM options 635 Arguments::print_on(st); 636 st->cr(); 637 } 638 639 STEP(220, "(printing environment variables)" ) 640 641 if (_verbose) { 642 os::print_environment_variables(st, env_list, buf, sizeof(buf)); 643 st->cr(); 644 } 645 646 STEP(225, "(printing signal handlers)" ) 647 648 if (_verbose) { 649 os::print_signal_handlers(st, buf, sizeof(buf)); 650 st->cr(); 651 } 652 653 STEP(230, "" ) 654 655 if (_verbose) { 656 st->cr(); 657 st->print_cr("--------------- S Y S T E M ---------------"); 658 st->cr(); 659 } 660 661 STEP(240, "(printing OS information)" ) 662 663 if (_verbose) { 664 os::print_os_info(st); 665 st->cr(); 666 } 667 668 STEP(250, "(printing CPU info)" ) 669 if (_verbose) { 670 os::print_cpu_info(st); 671 st->cr(); 672 } 673 674 STEP(260, "(printing memory info)" ) 675 676 if (_verbose) { 677 os::print_memory_info(st); 678 st->cr(); 679 } 680 681 STEP(270, "(printing internal vm info)" ) 682 683 if (_verbose) { 684 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 685 st->cr(); 686 } 687 688 STEP(280, "(printing date and time)" ) 689 690 if (_verbose) { 691 os::print_date_and_time(st); 692 st->cr(); 693 } 694 695 END 696 697 # undef BEGIN 698 # undef STEP 699 # undef END 700 } 701 702 VMError* volatile VMError::first_error = NULL; 703 volatile jlong VMError::first_error_tid = -1; 704 705 void VMError::report_and_die() { 706 // Don't allocate large buffer on stack 707 static char buffer[O_BUFLEN]; 708 709 // An error could happen before tty is initialized or after it has been 710 // destroyed. Here we use a very simple unbuffered fdStream for printing. 711 // Only out.print_raw() and out.print_raw_cr() should be used, as other 712 // printing methods need to allocate large buffer on stack. To format a 713 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 714 static fdStream out(defaultStream::output_fd()); 715 716 // How many errors occurred in error handler when reporting first_error. 717 static int recursive_error_count; 718 719 // We will first print a brief message to standard out (verbose = false), 720 // then save detailed information in log file (verbose = true). 721 static bool out_done = false; // done printing to standard out 722 static bool log_done = false; // done saving error log 723 static fdStream log; // error log 724 725 if (SuppressFatalErrorMessage) { 726 os::abort(); 727 } 728 jlong mytid = os::current_thread_id(); 729 if (first_error == NULL && 730 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 731 732 // first time 733 first_error_tid = mytid; 734 set_error_reported(); 735 736 if (ShowMessageBoxOnError) { 737 show_message_box(buffer, sizeof(buffer)); 738 739 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 740 // WatcherThread can kill JVM if the error handler hangs. 741 ShowMessageBoxOnError = false; 742 } 743 744 // reset signal handlers or exception filter; make sure recursive crashes 745 // are handled properly. 746 reset_signal_handlers(); 747 748 } else { 749 // If UseOsErrorReporting we call this for each level of the call stack 750 // while searching for the exception handler. Only the first level needs 751 // to be reported. 752 if (UseOSErrorReporting && log_done) return; 753 754 // This is not the first error, see if it happened in a different thread 755 // or in the same thread during error reporting. 756 if (first_error_tid != mytid) { 757 jio_snprintf(buffer, sizeof(buffer), 758 "[thread " INT64_FORMAT " also had an error]", 759 mytid); 760 out.print_raw_cr(buffer); 761 762 // error reporting is not MT-safe, block current thread 763 os::infinite_sleep(); 764 765 } else { 766 if (recursive_error_count++ > 30) { 767 out.print_raw_cr("[Too many errors, abort]"); 768 os::die(); 769 } 770 771 jio_snprintf(buffer, sizeof(buffer), 772 "[error occurred during error reporting %s, id 0x%x]", 773 first_error ? first_error->_current_step_info : "", 774 _id); 775 if (log.is_open()) { 776 log.cr(); 777 log.print_raw_cr(buffer); 778 log.cr(); 779 } else { 780 out.cr(); 781 out.print_raw_cr(buffer); 782 out.cr(); 783 } 784 } 785 } 786 787 // print to screen 788 if (!out_done) { 789 first_error->_verbose = false; 790 791 staticBufferStream sbs(buffer, sizeof(buffer), &out); 792 first_error->report(&sbs); 793 794 out_done = true; 795 796 first_error->_current_step = 0; // reset current_step 797 first_error->_current_step_info = ""; // reset current_step string 798 } 799 800 // print to error log file 801 if (!log_done) { 802 first_error->_verbose = true; 803 804 // see if log file is already open 805 if (!log.is_open()) { 806 // open log file 807 int fd = -1; 808 809 if (ErrorFile != NULL) { 810 bool copy_ok = 811 Arguments::copy_expand_pid(ErrorFile, strlen(ErrorFile), buffer, sizeof(buffer)); 812 if (copy_ok) { 813 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 814 } 815 } 816 817 if (fd == -1) { 818 const char *cwd = os::get_current_directory(buffer, sizeof(buffer)); 819 size_t len = strlen(cwd); 820 // either user didn't specify, or the user's location failed, 821 // so use the default name in the current directory 822 jio_snprintf(&buffer[len], sizeof(buffer)-len, "%shs_err_pid%u.log", 823 os::file_separator(), os::current_process_id()); 824 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 825 } 826 827 if (fd == -1) { 828 // try temp directory 829 const char * tmpdir = os::get_temp_directory(); 830 jio_snprintf(buffer, sizeof(buffer), "%s%shs_err_pid%u.log", 831 tmpdir, os::file_separator(), os::current_process_id()); 832 fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666); 833 } 834 835 if (fd != -1) { 836 out.print_raw("# An error report file with more information is saved as:\n# "); 837 out.print_raw_cr(buffer); 838 os::set_error_file(buffer); 839 840 log.set_fd(fd); 841 } else { 842 out.print_raw_cr("# Can not save log file, dump to screen.."); 843 log.set_fd(defaultStream::output_fd()); 844 } 845 } 846 847 staticBufferStream sbs(buffer, O_BUFLEN, &log); 848 first_error->report(&sbs); 849 first_error->_current_step = 0; // reset current_step 850 first_error->_current_step_info = ""; // reset current_step string 851 852 if (log.fd() != defaultStream::output_fd()) { 853 close(log.fd()); 854 } 855 856 log.set_fd(-1); 857 log_done = true; 858 } 859 860 861 static bool skip_OnError = false; 862 if (!skip_OnError && OnError && OnError[0]) { 863 skip_OnError = true; 864 865 out.print_raw_cr("#"); 866 out.print_raw ("# -XX:OnError=\""); 867 out.print_raw (OnError); 868 out.print_raw_cr("\""); 869 870 char* cmd; 871 const char* ptr = OnError; 872 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 873 out.print_raw ("# Executing "); 874 #if defined(LINUX) 875 out.print_raw ("/bin/sh -c "); 876 #elif defined(SOLARIS) 877 out.print_raw ("/usr/bin/sh -c "); 878 #endif 879 out.print_raw ("\""); 880 out.print_raw (cmd); 881 out.print_raw_cr("\" ..."); 882 883 os::fork_and_exec(cmd); 884 } 885 886 // done with OnError 887 OnError = NULL; 888 } 889 890 static bool skip_bug_url = false; 891 if (!skip_bug_url) { 892 skip_bug_url = true; 893 894 out.print_raw_cr("#"); 895 print_bug_submit_message(&out, _thread); 896 } 897 898 if (!UseOSErrorReporting) { 899 // os::abort() will call abort hooks, try it first. 900 static bool skip_os_abort = false; 901 if (!skip_os_abort) { 902 skip_os_abort = true; 903 os::abort(); 904 } 905 906 // if os::abort() doesn't abort, try os::die(); 907 os::die(); 908 } 909 } 910 911 /* 912 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 913 * ensures utilities such as jmap can observe the process is a consistent state. 914 */ 915 class VM_ReportJavaOutOfMemory : public VM_Operation { 916 private: 917 VMError *_err; 918 public: 919 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 920 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 921 void doit(); 922 }; 923 924 void VM_ReportJavaOutOfMemory::doit() { 925 // Don't allocate large buffer on stack 926 static char buffer[O_BUFLEN]; 927 928 tty->print_cr("#"); 929 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 930 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 931 932 // make heap parsability 933 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 934 935 char* cmd; 936 const char* ptr = OnOutOfMemoryError; 937 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 938 tty->print("# Executing "); 939 #if defined(LINUX) 940 tty->print ("/bin/sh -c "); 941 #elif defined(SOLARIS) 942 tty->print ("/usr/bin/sh -c "); 943 #endif 944 tty->print_cr("\"%s\"...", cmd); 945 946 os::fork_and_exec(cmd); 947 } 948 } 949 950 void VMError::report_java_out_of_memory() { 951 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 952 MutexLocker ml(Heap_lock); 953 VM_ReportJavaOutOfMemory op(this); 954 VMThread::execute(&op); 955 } 956 }