1 /* 2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "compiler/compileBroker.hpp" 27 #include "gc_interface/collectedHeap.hpp" 28 #include "runtime/arguments.hpp" 29 #include "runtime/frame.inline.hpp" 30 #include "runtime/init.hpp" 31 #include "runtime/os.hpp" 32 #include "runtime/thread.hpp" 33 #include "runtime/vmThread.hpp" 34 #include "runtime/vm_operations.hpp" 35 #include "utilities/debug.hpp" 36 #include "utilities/decoder.hpp" 37 #include "utilities/defaultStream.hpp" 38 #include "utilities/errorReporter.hpp" 39 #include "utilities/top.hpp" 40 #include "utilities/vmError.hpp" 41 42 // List of environment variables that should be reported in error log file. 43 const char *env_list[] = { 44 // All platforms 45 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 46 "JAVA_COMPILER", "PATH", "USERNAME", 47 48 // Env variables that are defined on Solaris/Linux 49 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 50 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 51 52 // defined on Linux 53 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 54 55 // defined on Windows 56 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 57 58 (const char *)0 59 }; 60 61 // Fatal error handler for internal errors and crashes. 62 // 63 // The default behavior of fatal error handler is to print a brief message 64 // to standard out (defaultStream::output_fd()), then save detailed information 65 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple 66 // threads are having troubles at the same time, only one error is reported. 67 // The thread that is reporting error will abort VM when it is done, all other 68 // threads are blocked forever inside report_and_die(). 69 70 // Constructor for crashes 71 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) { 72 _thread = thread; 73 _id = sig; 74 _pc = pc; 75 _siginfo = siginfo; 76 _context = context; 77 78 _verbose = false; 79 _current_step = 0; 80 _current_step_info = NULL; 81 82 _message = NULL; 83 _detail_msg = NULL; 84 _filename = NULL; 85 _lineno = 0; 86 87 _size = 0; 88 } 89 90 // Constructor for internal errors 91 VMError::VMError(Thread* thread, const char* filename, int lineno, 92 const char* message, const char * detail_msg) 93 { 94 _thread = thread; 95 _id = internal_error; // Value that's not an OS exception/signal 96 _filename = filename; 97 _lineno = lineno; 98 _message = message; 99 _detail_msg = detail_msg; 100 101 _verbose = false; 102 _current_step = 0; 103 _current_step_info = NULL; 104 105 _pc = NULL; 106 _siginfo = NULL; 107 _context = NULL; 108 109 _size = 0; 110 } 111 112 // Constructor for OOM errors 113 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size, 114 const char* message) { 115 _thread = thread; 116 _id = oom_error; // Value that's not an OS exception/signal 117 _filename = filename; 118 _lineno = lineno; 119 _message = message; 120 _detail_msg = NULL; 121 122 _verbose = false; 123 _current_step = 0; 124 _current_step_info = NULL; 125 126 _pc = NULL; 127 _siginfo = NULL; 128 _context = NULL; 129 130 _size = size; 131 } 132 133 134 // Constructor for non-fatal errors 135 VMError::VMError(const char* message) { 136 _thread = NULL; 137 _id = internal_error; // Value that's not an OS exception/signal 138 _filename = NULL; 139 _lineno = 0; 140 _message = message; 141 _detail_msg = NULL; 142 143 _verbose = false; 144 _current_step = 0; 145 _current_step_info = NULL; 146 147 _pc = NULL; 148 _siginfo = NULL; 149 _context = NULL; 150 151 _size = 0; 152 } 153 154 // -XX:OnError=<string>, where <string> can be a list of commands, separated 155 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by 156 // a single "%". Some examples: 157 // 158 // -XX:OnError="pmap %p" // show memory map 159 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger 160 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com" 161 // -XX:OnError="kill -9 %p" // ?#!@# 162 163 // A simple parser for -XX:OnError, usage: 164 // ptr = OnError; 165 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 166 // ... ... 167 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 168 if (ptr == NULL || *ptr == NULL) return NULL; 169 170 const char* cmd = *ptr; 171 172 // skip leading blanks or ';' 173 while (*cmd == ' ' || *cmd == ';') cmd++; 174 175 if (*cmd == '\0') return NULL; 176 177 const char * cmdend = cmd; 178 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 179 180 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 181 182 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 183 return buf; 184 } 185 186 187 static void print_bug_submit_message(outputStream *out, Thread *thread) { 188 if (out == NULL) return; 189 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 190 out->print_raw ("# "); 191 out->print_raw_cr(Arguments::java_vendor_url_bug()); 192 // If the crash is in native code, encourage user to submit a bug to the 193 // provider of that code. 194 if (thread && thread->is_Java_thread() && 195 !thread->is_hidden_from_external_view()) { 196 JavaThread* jt = (JavaThread*)thread; 197 if (jt->thread_state() == _thread_in_native) { 198 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 199 } 200 } 201 out->print_raw_cr("#"); 202 } 203 204 bool VMError::coredump_status; 205 char VMError::coredump_message[O_BUFLEN]; 206 207 void VMError::report_coredump_status(const char* message, bool status) { 208 coredump_status = status; 209 strncpy(coredump_message, message, sizeof(coredump_message)); 210 coredump_message[sizeof(coredump_message)-1] = 0; 211 } 212 213 214 // Return a string to describe the error 215 char* VMError::error_string(char* buf, int buflen) { 216 char signame_buf[64]; 217 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 218 219 if (signame) { 220 jio_snprintf(buf, buflen, 221 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 222 signame, _id, _pc, 223 os::current_process_id(), os::current_thread_id()); 224 } else if (_filename != NULL && _lineno > 0) { 225 // skip directory names 226 char separator = os::file_separator()[0]; 227 const char *p = strrchr(_filename, separator); 228 int n = jio_snprintf(buf, buflen, 229 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 230 p ? p + 1 : _filename, _lineno, 231 os::current_process_id(), os::current_thread_id()); 232 if (n >= 0 && n < buflen && _message) { 233 if (_detail_msg) { 234 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 235 os::line_separator(), _message, _detail_msg); 236 } else { 237 jio_snprintf(buf + n, buflen - n, "%sError: %s", 238 os::line_separator(), _message); 239 } 240 } 241 } else { 242 jio_snprintf(buf, buflen, 243 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 244 _id, os::current_process_id(), os::current_thread_id()); 245 } 246 247 return buf; 248 } 249 250 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 251 char* buf, int buflen, bool verbose) { 252 #ifdef ZERO 253 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 254 // StackFrameStream uses the frame anchor, which may not have 255 // been set up. This can be done at any time in Zero, however, 256 // so if it hasn't been set up then we just set it up now and 257 // clear it again when we're done. 258 bool has_last_Java_frame = jt->has_last_Java_frame(); 259 if (!has_last_Java_frame) 260 jt->set_last_Java_frame(); 261 st->print("Java frames:"); 262 263 // If the top frame is a Shark frame and the frame anchor isn't 264 // set up then it's possible that the information in the frame 265 // is garbage: it could be from a previous decache, or it could 266 // simply have never been written. So we print a warning... 267 StackFrameStream sfs(jt); 268 if (!has_last_Java_frame && !sfs.is_done()) { 269 if (sfs.current()->zeroframe()->is_shark_frame()) { 270 st->print(" (TOP FRAME MAY BE JUNK)"); 271 } 272 } 273 st->cr(); 274 275 // Print the frames 276 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 277 sfs.current()->zero_print_on_error(i, st, buf, buflen); 278 st->cr(); 279 } 280 281 // Reset the frame anchor if necessary 282 if (!has_last_Java_frame) 283 jt->reset_last_Java_frame(); 284 } 285 #else 286 if (jt->has_last_Java_frame()) { 287 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 288 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 289 sfs.current()->print_on_error(st, buf, buflen, verbose); 290 st->cr(); 291 } 292 } 293 #endif // ZERO 294 } 295 296 // This is the main function to report a fatal error. Only one thread can 297 // call this function, so we don't need to worry about MT-safety. But it's 298 // possible that the error handler itself may crash or die on an internal 299 // error, for example, when the stack/heap is badly damaged. We must be 300 // able to handle recursive errors that happen inside error handler. 301 // 302 // Error reporting is done in several steps. If a crash or internal error 303 // occurred when reporting an error, the nested signal/exception handler 304 // can skip steps that are already (or partially) done. Error reporting will 305 // continue from the next step. This allows us to retrieve and print 306 // information that may be unsafe to get after a fatal error. If it happens, 307 // you may find nested report_and_die() frames when you look at the stack 308 // in a debugger. 309 // 310 // In general, a hang in error handler is much worse than a crash or internal 311 // error, as it's harder to recover from a hang. Deadlock can happen if we 312 // try to grab a lock that is already owned by current thread, or if the 313 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 314 // error handler and all the functions it called should avoid grabbing any 315 // lock. An important thing to notice is that memory allocation needs a lock. 316 // 317 // We should avoid using large stack allocated buffers. Many errors happen 318 // when stack space is already low. Making things even worse is that there 319 // could be nested report_and_die() calls on stack (see above). Only one 320 // thread can report error, so large buffers are statically allocated in data 321 // segment. 322 323 void VMError::report(outputStream* st) { 324 # define BEGIN if (_current_step == 0) { _current_step = 1; 325 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 326 # define END } 327 328 // don't allocate large buffer on stack 329 static char buf[O_BUFLEN]; 330 331 BEGIN 332 333 STEP(10, "(printing fatal error message)") 334 335 st->print_cr("#"); 336 if (should_report_bug(_id)) { 337 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 338 } else { 339 st->print_cr("# There is insufficient memory for the Java " 340 "Runtime Environment to continue."); 341 } 342 343 STEP(15, "(printing type of error)") 344 345 switch(_id) { 346 case oom_error: 347 if (_size) { 348 st->print("# Native memory allocation (malloc) failed to allocate "); 349 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 350 st->print(buf); 351 st->print(" bytes"); 352 if (_message != NULL) { 353 st->print(" for "); 354 st->print(_message); 355 } 356 st->cr(); 357 } else { 358 if (_message != NULL) 359 st->print("# "); 360 st->print_cr(_message); 361 } 362 // In error file give some solutions 363 if (_verbose) { 364 st->print_cr("# Possible reasons:"); 365 st->print_cr("# The system is out of physical RAM or swap space"); 366 st->print_cr("# In 32 bit mode, the process size limit was hit"); 367 st->print_cr("# Possible solutions:"); 368 st->print_cr("# Reduce memory load on the system"); 369 st->print_cr("# Increase physical memory or swap space"); 370 st->print_cr("# Check if swap backing store is full"); 371 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 372 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 373 st->print_cr("# Decrease number of Java threads"); 374 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 375 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 376 st->print_cr("# This output file may be truncated or incomplete."); 377 } else { 378 return; // that's enough for the screen 379 } 380 break; 381 case internal_error: 382 default: 383 break; 384 } 385 386 STEP(20, "(printing exception/signal name)") 387 388 st->print_cr("#"); 389 st->print("# "); 390 // Is it an OS exception/signal? 391 if (os::exception_name(_id, buf, sizeof(buf))) { 392 st->print("%s", buf); 393 st->print(" (0x%x)", _id); // signal number 394 st->print(" at pc=" PTR_FORMAT, _pc); 395 } else { 396 if (should_report_bug(_id)) { 397 st->print("Internal Error"); 398 } else { 399 st->print("Out of Memory Error"); 400 } 401 if (_filename != NULL && _lineno > 0) { 402 #ifdef PRODUCT 403 // In product mode chop off pathname? 404 char separator = os::file_separator()[0]; 405 const char *p = strrchr(_filename, separator); 406 const char *file = p ? p+1 : _filename; 407 #else 408 const char *file = _filename; 409 #endif 410 size_t len = strlen(file); 411 size_t buflen = sizeof(buf); 412 413 strncpy(buf, file, buflen); 414 if (len + 10 < buflen) { 415 sprintf(buf + len, ":%d", _lineno); 416 } 417 st->print(" (%s)", buf); 418 } else { 419 st->print(" (0x%x)", _id); 420 } 421 } 422 423 STEP(30, "(printing current thread and pid)") 424 425 // process id, thread id 426 st->print(", pid=%d", os::current_process_id()); 427 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 428 st->cr(); 429 430 STEP(40, "(printing error message)") 431 432 if (should_report_bug(_id)) { // already printed the message. 433 // error message 434 if (_detail_msg) { 435 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 436 } else if (_message) { 437 st->print_cr("# Error: %s", _message); 438 } 439 } 440 441 STEP(50, "(printing Java version string)") 442 443 // VM version 444 st->print_cr("#"); 445 JDK_Version::current().to_string(buf, sizeof(buf)); 446 st->print_cr("# JRE version: %s", buf); 447 st->print_cr("# Java VM: %s (%s %s %s %s)", 448 Abstract_VM_Version::vm_name(), 449 Abstract_VM_Version::vm_release(), 450 Abstract_VM_Version::vm_info_string(), 451 Abstract_VM_Version::vm_platform_string(), 452 UseCompressedOops ? "compressed oops" : "" 453 ); 454 455 STEP(60, "(printing problematic frame)") 456 457 // Print current frame if we have a context (i.e. it's a crash) 458 if (_context) { 459 st->print_cr("# Problematic frame:"); 460 st->print("# "); 461 frame fr = os::fetch_frame_from_context(_context); 462 fr.print_on_error(st, buf, sizeof(buf)); 463 st->cr(); 464 st->print_cr("#"); 465 } 466 STEP(63, "(printing core file information)") 467 st->print("# "); 468 if (coredump_status) { 469 st->print("Core dump written. Default location: %s", coredump_message); 470 } else { 471 st->print("Failed to write core dump. %s", coredump_message); 472 } 473 st->print_cr(""); 474 st->print_cr("#"); 475 476 STEP(65, "(printing bug submit message)") 477 478 if (should_report_bug(_id) && _verbose) { 479 print_bug_submit_message(st, _thread); 480 } 481 482 STEP(70, "(printing thread)" ) 483 484 if (_verbose) { 485 st->cr(); 486 st->print_cr("--------------- T H R E A D ---------------"); 487 st->cr(); 488 } 489 490 STEP(80, "(printing current thread)" ) 491 492 // current thread 493 if (_verbose) { 494 if (_thread) { 495 st->print("Current thread (" PTR_FORMAT "): ", _thread); 496 _thread->print_on_error(st, buf, sizeof(buf)); 497 st->cr(); 498 } else { 499 st->print_cr("Current thread is native thread"); 500 } 501 st->cr(); 502 } 503 504 STEP(90, "(printing siginfo)" ) 505 506 // signal no, signal code, address that caused the fault 507 if (_verbose && _siginfo) { 508 os::print_siginfo(st, _siginfo); 509 st->cr(); 510 } 511 512 STEP(100, "(printing registers, top of stack, instructions near pc)") 513 514 // registers, top of stack, instructions near pc 515 if (_verbose && _context) { 516 os::print_context(st, _context); 517 st->cr(); 518 } 519 520 STEP(105, "(printing register info)") 521 522 // decode register contents if possible 523 if (_verbose && _context && Universe::is_fully_initialized()) { 524 os::print_register_info(st, _context); 525 st->cr(); 526 } 527 528 STEP(110, "(printing stack bounds)" ) 529 530 if (_verbose) { 531 st->print("Stack: "); 532 533 address stack_top; 534 size_t stack_size; 535 536 if (_thread) { 537 stack_top = _thread->stack_base(); 538 stack_size = _thread->stack_size(); 539 } else { 540 stack_top = os::current_stack_base(); 541 stack_size = os::current_stack_size(); 542 } 543 544 address stack_bottom = stack_top - stack_size; 545 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 546 547 frame fr = _context ? os::fetch_frame_from_context(_context) 548 : os::current_frame(); 549 550 if (fr.sp()) { 551 st->print(", sp=" PTR_FORMAT, fr.sp()); 552 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 553 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 554 } 555 556 st->cr(); 557 } 558 559 STEP(120, "(printing native stack)" ) 560 561 if (_verbose) { 562 frame fr = _context ? os::fetch_frame_from_context(_context) 563 : os::current_frame(); 564 565 // see if it's a valid frame 566 if (fr.pc()) { 567 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)"); 568 569 // initialize decoder to decode C frames 570 Decoder decoder; 571 572 int count = 0; 573 while (count++ < StackPrintLimit) { 574 fr.print_on_error(st, buf, sizeof(buf)); 575 st->cr(); 576 if (os::is_first_C_frame(&fr)) break; 577 fr = os::get_sender_for_C_frame(&fr); 578 } 579 580 if (count > StackPrintLimit) { 581 st->print_cr("...<more frames>..."); 582 } 583 584 st->cr(); 585 } 586 } 587 588 STEP(130, "(printing Java stack)" ) 589 590 if (_verbose && _thread && _thread->is_Java_thread()) { 591 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 592 } 593 594 STEP(135, "(printing target Java thread stack)" ) 595 596 // printing Java thread stack trace if it is involved in GC crash 597 if (_verbose && _thread && (_thread->is_Named_thread())) { 598 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 599 if (jt != NULL) { 600 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 601 print_stack_trace(st, jt, buf, sizeof(buf), true); 602 } 603 } 604 605 STEP(140, "(printing VM operation)" ) 606 607 if (_verbose && _thread && _thread->is_VM_thread()) { 608 VMThread* t = (VMThread*)_thread; 609 VM_Operation* op = t->vm_operation(); 610 if (op) { 611 op->print_on_error(st); 612 st->cr(); 613 st->cr(); 614 } 615 } 616 617 STEP(150, "(printing current compile task)" ) 618 619 if (_verbose && _thread && _thread->is_Compiler_thread()) { 620 CompilerThread* t = (CompilerThread*)_thread; 621 if (t->task()) { 622 st->cr(); 623 st->print_cr("Current CompileTask:"); 624 t->task()->print_line_on_error(st, buf, sizeof(buf)); 625 st->cr(); 626 } 627 } 628 629 STEP(160, "(printing process)" ) 630 631 if (_verbose) { 632 st->cr(); 633 st->print_cr("--------------- P R O C E S S ---------------"); 634 st->cr(); 635 } 636 637 STEP(170, "(printing all threads)" ) 638 639 // all threads 640 if (_verbose && _thread) { 641 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 642 st->cr(); 643 } 644 645 STEP(175, "(printing VM state)" ) 646 647 if (_verbose) { 648 // Safepoint state 649 st->print("VM state:"); 650 651 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 652 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 653 else st->print("not at safepoint"); 654 655 // Also see if error occurred during initialization or shutdown 656 if (!Universe::is_fully_initialized()) { 657 st->print(" (not fully initialized)"); 658 } else if (VM_Exit::vm_exited()) { 659 st->print(" (shutting down)"); 660 } else { 661 st->print(" (normal execution)"); 662 } 663 st->cr(); 664 st->cr(); 665 } 666 667 STEP(180, "(printing owned locks on error)" ) 668 669 // mutexes/monitors that currently have an owner 670 if (_verbose) { 671 print_owned_locks_on_error(st); 672 st->cr(); 673 } 674 675 STEP(190, "(printing heap information)" ) 676 677 if (_verbose && Universe::is_fully_initialized()) { 678 // print heap information before vm abort 679 Universe::print_on(st); 680 st->cr(); 681 } 682 683 STEP(195, "(printing code cache information)" ) 684 685 if (_verbose && Universe::is_fully_initialized()) { 686 // print code cache information before vm abort 687 CodeCache::print_bounds(st); 688 st->cr(); 689 } 690 691 STEP(200, "(printing dynamic libraries)" ) 692 693 if (_verbose) { 694 // dynamic libraries, or memory map 695 os::print_dll_info(st); 696 st->cr(); 697 } 698 699 STEP(210, "(printing VM options)" ) 700 701 if (_verbose) { 702 // VM options 703 Arguments::print_on(st); 704 st->cr(); 705 } 706 707 STEP(220, "(printing environment variables)" ) 708 709 if (_verbose) { 710 os::print_environment_variables(st, env_list, buf, sizeof(buf)); 711 st->cr(); 712 } 713 714 STEP(225, "(printing signal handlers)" ) 715 716 if (_verbose) { 717 os::print_signal_handlers(st, buf, sizeof(buf)); 718 st->cr(); 719 } 720 721 STEP(230, "" ) 722 723 if (_verbose) { 724 st->cr(); 725 st->print_cr("--------------- S Y S T E M ---------------"); 726 st->cr(); 727 } 728 729 STEP(240, "(printing OS information)" ) 730 731 if (_verbose) { 732 os::print_os_info(st); 733 st->cr(); 734 } 735 736 STEP(250, "(printing CPU info)" ) 737 if (_verbose) { 738 os::print_cpu_info(st); 739 st->cr(); 740 } 741 742 STEP(260, "(printing memory info)" ) 743 744 if (_verbose) { 745 os::print_memory_info(st); 746 st->cr(); 747 } 748 749 STEP(270, "(printing internal vm info)" ) 750 751 if (_verbose) { 752 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 753 st->cr(); 754 } 755 756 STEP(280, "(printing date and time)" ) 757 758 if (_verbose) { 759 os::print_date_and_time(st); 760 st->cr(); 761 } 762 763 END 764 765 # undef BEGIN 766 # undef STEP 767 # undef END 768 } 769 770 VMError* volatile VMError::first_error = NULL; 771 volatile jlong VMError::first_error_tid = -1; 772 773 void VMError::report_and_die() { 774 // Don't allocate large buffer on stack 775 static char buffer[O_BUFLEN]; 776 777 // An error could happen before tty is initialized or after it has been 778 // destroyed. Here we use a very simple unbuffered fdStream for printing. 779 // Only out.print_raw() and out.print_raw_cr() should be used, as other 780 // printing methods need to allocate large buffer on stack. To format a 781 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 782 static fdStream out(defaultStream::output_fd()); 783 784 // How many errors occurred in error handler when reporting first_error. 785 static int recursive_error_count; 786 787 // We will first print a brief message to standard out (verbose = false), 788 // then save detailed information in log file (verbose = true). 789 static bool out_done = false; // done printing to standard out 790 static bool log_done = false; // done saving error log 791 static bool transmit_report_done = false; // done error reporting 792 static fdStream log; // error log 793 794 if (SuppressFatalErrorMessage) { 795 os::abort(); 796 } 797 jlong mytid = os::current_thread_id(); 798 if (first_error == NULL && 799 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 800 801 // first time 802 first_error_tid = mytid; 803 set_error_reported(); 804 805 if (ShowMessageBoxOnError || PauseAtExit) { 806 show_message_box(buffer, sizeof(buffer)); 807 808 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 809 // WatcherThread can kill JVM if the error handler hangs. 810 ShowMessageBoxOnError = false; 811 } 812 813 // Write a minidump on Windows, check core dump limits on Linux/Solaris 814 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer)); 815 816 // reset signal handlers or exception filter; make sure recursive crashes 817 // are handled properly. 818 reset_signal_handlers(); 819 820 } else { 821 // If UseOsErrorReporting we call this for each level of the call stack 822 // while searching for the exception handler. Only the first level needs 823 // to be reported. 824 if (UseOSErrorReporting && log_done) return; 825 826 // This is not the first error, see if it happened in a different thread 827 // or in the same thread during error reporting. 828 if (first_error_tid != mytid) { 829 jio_snprintf(buffer, sizeof(buffer), 830 "[thread " INT64_FORMAT " also had an error]", 831 mytid); 832 out.print_raw_cr(buffer); 833 834 // error reporting is not MT-safe, block current thread 835 os::infinite_sleep(); 836 837 } else { 838 if (recursive_error_count++ > 30) { 839 out.print_raw_cr("[Too many errors, abort]"); 840 os::die(); 841 } 842 843 jio_snprintf(buffer, sizeof(buffer), 844 "[error occurred during error reporting %s, id 0x%x]", 845 first_error ? first_error->_current_step_info : "", 846 _id); 847 if (log.is_open()) { 848 log.cr(); 849 log.print_raw_cr(buffer); 850 log.cr(); 851 } else { 852 out.cr(); 853 out.print_raw_cr(buffer); 854 out.cr(); 855 } 856 } 857 } 858 859 // print to screen 860 if (!out_done) { 861 first_error->_verbose = false; 862 863 staticBufferStream sbs(buffer, sizeof(buffer), &out); 864 first_error->report(&sbs); 865 866 out_done = true; 867 868 first_error->_current_step = 0; // reset current_step 869 first_error->_current_step_info = ""; // reset current_step string 870 } 871 872 // print to error log file 873 if (!log_done) { 874 first_error->_verbose = true; 875 876 // see if log file is already open 877 if (!log.is_open()) { 878 // open log file 879 int fd = -1; 880 881 if (ErrorFile != NULL) { 882 bool copy_ok = 883 Arguments::copy_expand_pid(ErrorFile, strlen(ErrorFile), buffer, sizeof(buffer)); 884 if (copy_ok) { 885 fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 886 } 887 } 888 889 if (fd == -1) { 890 const char *cwd = os::get_current_directory(buffer, sizeof(buffer)); 891 size_t len = strlen(cwd); 892 // either user didn't specify, or the user's location failed, 893 // so use the default name in the current directory 894 jio_snprintf(&buffer[len], sizeof(buffer)-len, "%shs_err_pid%u.log", 895 os::file_separator(), os::current_process_id()); 896 fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 897 } 898 899 if (fd == -1) { 900 const char * tmpdir = os::get_temp_directory(); 901 // try temp directory if it exists. 902 if (tmpdir != NULL && tmpdir[0] != '\0') { 903 jio_snprintf(buffer, sizeof(buffer), "%s%shs_err_pid%u.log", 904 tmpdir, os::file_separator(), os::current_process_id()); 905 fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 906 } 907 } 908 909 if (fd != -1) { 910 out.print_raw("# An error report file with more information is saved as:\n# "); 911 out.print_raw_cr(buffer); 912 os::set_error_file(buffer); 913 914 log.set_fd(fd); 915 } else { 916 out.print_raw_cr("# Can not save log file, dump to screen.."); 917 log.set_fd(defaultStream::output_fd()); 918 /* Error reporting currently needs dumpfile. 919 * Maybe implement direct streaming in the future.*/ 920 transmit_report_done = true; 921 } 922 } 923 924 staticBufferStream sbs(buffer, O_BUFLEN, &log); 925 first_error->report(&sbs); 926 first_error->_current_step = 0; // reset current_step 927 first_error->_current_step_info = ""; // reset current_step string 928 929 // Run error reporting to determine whether or not to report the crash. 930 if (!transmit_report_done && should_report_bug(first_error->_id)) { 931 transmit_report_done = true; 932 FILE* hs_err = ::fdopen(log.fd(), "r"); 933 if (NULL != hs_err) { 934 ErrorReporter er; 935 er.call(hs_err, buffer, O_BUFLEN); 936 } 937 } 938 939 if (log.fd() != defaultStream::output_fd()) { 940 close(log.fd()); 941 } 942 943 log.set_fd(-1); 944 log_done = true; 945 } 946 947 948 static bool skip_OnError = false; 949 if (!skip_OnError && OnError && OnError[0]) { 950 skip_OnError = true; 951 952 out.print_raw_cr("#"); 953 out.print_raw ("# -XX:OnError=\""); 954 out.print_raw (OnError); 955 out.print_raw_cr("\""); 956 957 char* cmd; 958 const char* ptr = OnError; 959 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 960 out.print_raw ("# Executing "); 961 #if defined(LINUX) 962 out.print_raw ("/bin/sh -c "); 963 #elif defined(SOLARIS) 964 out.print_raw ("/usr/bin/sh -c "); 965 #endif 966 out.print_raw ("\""); 967 out.print_raw (cmd); 968 out.print_raw_cr("\" ..."); 969 970 os::fork_and_exec(cmd); 971 } 972 973 // done with OnError 974 OnError = NULL; 975 } 976 977 static bool skip_bug_url = !should_report_bug(first_error->_id); 978 if (!skip_bug_url) { 979 skip_bug_url = true; 980 981 out.print_raw_cr("#"); 982 print_bug_submit_message(&out, _thread); 983 } 984 985 if (!UseOSErrorReporting) { 986 // os::abort() will call abort hooks, try it first. 987 static bool skip_os_abort = false; 988 if (!skip_os_abort) { 989 skip_os_abort = true; 990 bool dump_core = should_report_bug(first_error->_id); 991 os::abort(dump_core); 992 } 993 994 // if os::abort() doesn't abort, try os::die(); 995 os::die(); 996 } 997 } 998 999 /* 1000 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1001 * ensures utilities such as jmap can observe the process is a consistent state. 1002 */ 1003 class VM_ReportJavaOutOfMemory : public VM_Operation { 1004 private: 1005 VMError *_err; 1006 public: 1007 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 1008 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1009 void doit(); 1010 }; 1011 1012 void VM_ReportJavaOutOfMemory::doit() { 1013 // Don't allocate large buffer on stack 1014 static char buffer[O_BUFLEN]; 1015 1016 tty->print_cr("#"); 1017 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 1018 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1019 1020 // make heap parsability 1021 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1022 1023 char* cmd; 1024 const char* ptr = OnOutOfMemoryError; 1025 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1026 tty->print("# Executing "); 1027 #if defined(LINUX) 1028 tty->print ("/bin/sh -c "); 1029 #elif defined(SOLARIS) 1030 tty->print ("/usr/bin/sh -c "); 1031 #endif 1032 tty->print_cr("\"%s\"...", cmd); 1033 1034 os::fork_and_exec(cmd); 1035 } 1036 } 1037 1038 void VMError::report_java_out_of_memory() { 1039 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1040 MutexLocker ml(Heap_lock); 1041 VM_ReportJavaOutOfMemory op(this); 1042 VMThread::execute(&op); 1043 } 1044 }