1 /* 2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include <fcntl.h> 26 #include "precompiled.hpp" 27 #include "code/codeCache.hpp" 28 #include "compiler/compileBroker.hpp" 29 #include "gc_interface/collectedHeap.hpp" 30 #include "prims/whitebox.hpp" 31 #include "runtime/arguments.hpp" 32 #include "runtime/atomic.inline.hpp" 33 #include "runtime/frame.inline.hpp" 34 #include "runtime/init.hpp" 35 #include "runtime/os.hpp" 36 #include "runtime/thread.inline.hpp" 37 #include "runtime/vmThread.hpp" 38 #include "runtime/vm_operations.hpp" 39 #include "services/memTracker.hpp" 40 #include "utilities/debug.hpp" 41 #include "utilities/decoder.hpp" 42 #include "utilities/defaultStream.hpp" 43 #include "utilities/errorReporter.hpp" 44 #include "utilities/events.hpp" 45 #include "utilities/top.hpp" 46 #include "utilities/vmError.hpp" 47 48 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 49 50 // List of environment variables that should be reported in error log file. 51 const char *env_list[] = { 52 // All platforms 53 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 54 "JAVA_COMPILER", "PATH", "USERNAME", 55 56 // Env variables that are defined on Solaris/Linux/BSD 57 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 58 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 59 60 // defined on Linux 61 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 62 63 // defined on Darwin 64 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH", 65 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH", 66 "DYLD_INSERT_LIBRARIES", 67 68 // defined on Windows 69 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 70 71 (const char *)0 72 }; 73 74 // Fatal error handler for internal errors and crashes. 75 // 76 // The default behavior of fatal error handler is to print a brief message 77 // to standard out (defaultStream::output_fd()), then save detailed information 78 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple 79 // threads are having troubles at the same time, only one error is reported. 80 // The thread that is reporting error will abort VM when it is done, all other 81 // threads are blocked forever inside report_and_die(). 82 83 // Constructor for crashes 84 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) { 85 _thread = thread; 86 _id = sig; 87 _pc = pc; 88 _siginfo = siginfo; 89 _context = context; 90 91 _verbose = false; 92 _current_step = 0; 93 _current_step_info = NULL; 94 95 _message = NULL; 96 _detail_msg = NULL; 97 _filename = NULL; 98 _lineno = 0; 99 100 _size = 0; 101 } 102 103 // Constructor for internal errors 104 VMError::VMError(Thread* thread, const char* filename, int lineno, 105 const char* message, const char * detail_msg) 106 { 107 _thread = thread; 108 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal 109 _filename = filename; 110 _lineno = lineno; 111 _message = message; 112 _detail_msg = detail_msg; 113 114 _verbose = false; 115 _current_step = 0; 116 _current_step_info = NULL; 117 118 _pc = NULL; 119 _siginfo = NULL; 120 _context = NULL; 121 122 _size = 0; 123 } 124 125 // Constructor for OOM errors 126 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size, 127 VMErrorType vm_err_type, const char* message) { 128 _thread = thread; 129 _id = vm_err_type; // Value that's not an OS exception/signal 130 _filename = filename; 131 _lineno = lineno; 132 _message = message; 133 _detail_msg = NULL; 134 135 _verbose = false; 136 _current_step = 0; 137 _current_step_info = NULL; 138 139 _pc = NULL; 140 _siginfo = NULL; 141 _context = NULL; 142 143 _size = size; 144 } 145 146 147 // Constructor for non-fatal errors 148 VMError::VMError(const char* message) { 149 _thread = NULL; 150 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal 151 _filename = NULL; 152 _lineno = 0; 153 _message = message; 154 _detail_msg = NULL; 155 156 _verbose = false; 157 _current_step = 0; 158 _current_step_info = NULL; 159 160 _pc = NULL; 161 _siginfo = NULL; 162 _context = NULL; 163 164 _size = 0; 165 } 166 167 // -XX:OnError=<string>, where <string> can be a list of commands, separated 168 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by 169 // a single "%". Some examples: 170 // 171 // -XX:OnError="pmap %p" // show memory map 172 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger 173 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com" 174 // -XX:OnError="kill -9 %p" // ?#!@# 175 176 // A simple parser for -XX:OnError, usage: 177 // ptr = OnError; 178 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 179 // ... ... 180 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 181 if (ptr == NULL || *ptr == NULL) return NULL; 182 183 const char* cmd = *ptr; 184 185 // skip leading blanks or ';' 186 while (*cmd == ' ' || *cmd == ';') cmd++; 187 188 if (*cmd == '\0') return NULL; 189 190 const char * cmdend = cmd; 191 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 192 193 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 194 195 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 196 return buf; 197 } 198 199 200 static void print_bug_submit_message(outputStream *out, Thread *thread) { 201 if (out == NULL) return; 202 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 203 out->print_raw ("# "); 204 out->print_raw_cr(Arguments::java_vendor_url_bug()); 205 // If the crash is in native code, encourage user to submit a bug to the 206 // provider of that code. 207 if (thread && thread->is_Java_thread() && 208 !thread->is_hidden_from_external_view()) { 209 JavaThread* jt = (JavaThread*)thread; 210 if (jt->thread_state() == _thread_in_native) { 211 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 212 } 213 } 214 out->print_raw_cr("#"); 215 } 216 217 bool VMError::coredump_status; 218 char VMError::coredump_message[O_BUFLEN]; 219 220 void VMError::report_coredump_status(const char* message, bool status) { 221 coredump_status = status; 222 strncpy(coredump_message, message, sizeof(coredump_message)); 223 coredump_message[sizeof(coredump_message)-1] = 0; 224 } 225 226 227 // Return a string to describe the error 228 char* VMError::error_string(char* buf, int buflen) { 229 char signame_buf[64]; 230 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 231 232 if (signame) { 233 jio_snprintf(buf, buflen, 234 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 235 signame, _id, _pc, 236 os::current_process_id(), os::current_thread_id()); 237 } else if (_filename != NULL && _lineno > 0) { 238 // skip directory names 239 char separator = os::file_separator()[0]; 240 const char *p = strrchr(_filename, separator); 241 int n = jio_snprintf(buf, buflen, 242 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 243 p ? p + 1 : _filename, _lineno, 244 os::current_process_id(), os::current_thread_id()); 245 if (n >= 0 && n < buflen && _message) { 246 if (_detail_msg) { 247 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 248 os::line_separator(), _message, _detail_msg); 249 } else { 250 jio_snprintf(buf + n, buflen - n, "%sError: %s", 251 os::line_separator(), _message); 252 } 253 } 254 } else { 255 jio_snprintf(buf, buflen, 256 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 257 _id, os::current_process_id(), os::current_thread_id()); 258 } 259 260 return buf; 261 } 262 263 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 264 char* buf, int buflen, bool verbose) { 265 #ifdef ZERO 266 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 267 // StackFrameStream uses the frame anchor, which may not have 268 // been set up. This can be done at any time in Zero, however, 269 // so if it hasn't been set up then we just set it up now and 270 // clear it again when we're done. 271 bool has_last_Java_frame = jt->has_last_Java_frame(); 272 if (!has_last_Java_frame) 273 jt->set_last_Java_frame(); 274 st->print("Java frames:"); 275 276 // If the top frame is a Shark frame and the frame anchor isn't 277 // set up then it's possible that the information in the frame 278 // is garbage: it could be from a previous decache, or it could 279 // simply have never been written. So we print a warning... 280 StackFrameStream sfs(jt); 281 if (!has_last_Java_frame && !sfs.is_done()) { 282 if (sfs.current()->zeroframe()->is_shark_frame()) { 283 st->print(" (TOP FRAME MAY BE JUNK)"); 284 } 285 } 286 st->cr(); 287 288 // Print the frames 289 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 290 sfs.current()->zero_print_on_error(i, st, buf, buflen); 291 st->cr(); 292 } 293 294 // Reset the frame anchor if necessary 295 if (!has_last_Java_frame) 296 jt->reset_last_Java_frame(); 297 } 298 #else 299 if (jt->has_last_Java_frame()) { 300 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 301 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 302 sfs.current()->print_on_error(st, buf, buflen, verbose); 303 st->cr(); 304 } 305 } 306 #endif // ZERO 307 } 308 309 // This is the main function to report a fatal error. Only one thread can 310 // call this function, so we don't need to worry about MT-safety. But it's 311 // possible that the error handler itself may crash or die on an internal 312 // error, for example, when the stack/heap is badly damaged. We must be 313 // able to handle recursive errors that happen inside error handler. 314 // 315 // Error reporting is done in several steps. If a crash or internal error 316 // occurred when reporting an error, the nested signal/exception handler 317 // can skip steps that are already (or partially) done. Error reporting will 318 // continue from the next step. This allows us to retrieve and print 319 // information that may be unsafe to get after a fatal error. If it happens, 320 // you may find nested report_and_die() frames when you look at the stack 321 // in a debugger. 322 // 323 // In general, a hang in error handler is much worse than a crash or internal 324 // error, as it's harder to recover from a hang. Deadlock can happen if we 325 // try to grab a lock that is already owned by current thread, or if the 326 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 327 // error handler and all the functions it called should avoid grabbing any 328 // lock. An important thing to notice is that memory allocation needs a lock. 329 // 330 // We should avoid using large stack allocated buffers. Many errors happen 331 // when stack space is already low. Making things even worse is that there 332 // could be nested report_and_die() calls on stack (see above). Only one 333 // thread can report error, so large buffers are statically allocated in data 334 // segment. 335 336 void VMError::report(outputStream* st) { 337 # define BEGIN if (_current_step == 0) { _current_step = 1; 338 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 339 # define END } 340 341 // don't allocate large buffer on stack 342 static char buf[O_BUFLEN]; 343 344 BEGIN 345 346 STEP(10, "(printing fatal error message)") 347 348 st->print_cr("#"); 349 if (should_report_bug(_id)) { 350 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 351 } else { 352 st->print_cr("# There is insufficient memory for the Java " 353 "Runtime Environment to continue."); 354 } 355 356 #ifndef PRODUCT 357 // Error handler self tests 358 359 // test secondary error handling. Test it twice, to test that resetting 360 // error handler after a secondary crash works. 361 STEP(13, "(test secondary crash 1)") 362 if (_verbose && TestCrashInErrorHandler != 0) { 363 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...", 364 TestCrashInErrorHandler); 365 controlled_crash(TestCrashInErrorHandler); 366 } 367 368 STEP(14, "(test secondary crash 2)") 369 if (_verbose && TestCrashInErrorHandler != 0) { 370 st->print_cr("Will crash now (TestCrashInErrorHandler=%d)...", 371 TestCrashInErrorHandler); 372 controlled_crash(TestCrashInErrorHandler); 373 } 374 #endif // PRODUCT 375 376 STEP(15, "(printing type of error)") 377 378 switch(_id) { 379 case OOM_MALLOC_ERROR: 380 case OOM_MMAP_ERROR: 381 if (_size) { 382 st->print("# Native memory allocation "); 383 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 384 "(mmap) failed to map "); 385 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 386 st->print("%s", buf); 387 st->print(" bytes"); 388 if (_message != NULL) { 389 st->print(" for "); 390 st->print("%s", _message); 391 } 392 st->cr(); 393 } else { 394 if (_message != NULL) 395 st->print("# "); 396 st->print_cr("%s", _message); 397 } 398 // In error file give some solutions 399 if (_verbose) { 400 st->print_cr("# Possible reasons:"); 401 st->print_cr("# The system is out of physical RAM or swap space"); 402 st->print_cr("# In 32 bit mode, the process size limit was hit"); 403 st->print_cr("# Possible solutions:"); 404 st->print_cr("# Reduce memory load on the system"); 405 st->print_cr("# Increase physical memory or swap space"); 406 st->print_cr("# Check if swap backing store is full"); 407 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 408 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 409 st->print_cr("# Decrease number of Java threads"); 410 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 411 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 412 st->print_cr("# This output file may be truncated or incomplete."); 413 } else { 414 return; // that's enough for the screen 415 } 416 break; 417 case INTERNAL_ERROR: 418 default: 419 break; 420 } 421 422 STEP(20, "(printing exception/signal name)") 423 424 st->print_cr("#"); 425 st->print("# "); 426 // Is it an OS exception/signal? 427 if (os::exception_name(_id, buf, sizeof(buf))) { 428 st->print("%s", buf); 429 st->print(" (0x%x)", _id); // signal number 430 st->print(" at pc=" PTR_FORMAT, _pc); 431 } else { 432 if (should_report_bug(_id)) { 433 st->print("Internal Error"); 434 } else { 435 st->print("Out of Memory Error"); 436 } 437 if (_filename != NULL && _lineno > 0) { 438 #ifdef PRODUCT 439 // In product mode chop off pathname? 440 char separator = os::file_separator()[0]; 441 const char *p = strrchr(_filename, separator); 442 const char *file = p ? p+1 : _filename; 443 #else 444 const char *file = _filename; 445 #endif 446 size_t len = strlen(file); 447 size_t buflen = sizeof(buf); 448 449 strncpy(buf, file, buflen); 450 if (len + 10 < buflen) { 451 sprintf(buf + len, ":%d", _lineno); 452 } 453 st->print(" (%s)", buf); 454 } else { 455 st->print(" (0x%x)", _id); 456 } 457 } 458 459 STEP(30, "(printing current thread and pid)") 460 461 // process id, thread id 462 st->print(", pid=%d", os::current_process_id()); 463 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 464 st->cr(); 465 466 STEP(40, "(printing error message)") 467 468 if (should_report_bug(_id)) { // already printed the message. 469 // error message 470 if (_detail_msg) { 471 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 472 } else if (_message) { 473 st->print_cr("# Error: %s", _message); 474 } 475 } 476 477 STEP(50, "(printing Java version string)") 478 479 // VM version 480 st->print_cr("#"); 481 JDK_Version::current().to_string(buf, sizeof(buf)); 482 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 483 JDK_Version::runtime_name() : ""; 484 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 485 JDK_Version::runtime_version() : ""; 486 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version); 487 st->print_cr("# Java VM: %s (%s %s %s %s)", 488 Abstract_VM_Version::vm_name(), 489 Abstract_VM_Version::vm_release(), 490 Abstract_VM_Version::vm_info_string(), 491 Abstract_VM_Version::vm_platform_string(), 492 UseCompressedOops ? "compressed oops" : "" 493 ); 494 495 STEP(60, "(printing problematic frame)") 496 497 // Print current frame if we have a context (i.e. it's a crash) 498 if (_context) { 499 st->print_cr("# Problematic frame:"); 500 st->print("# "); 501 frame fr = os::fetch_frame_from_context(_context); 502 fr.print_on_error(st, buf, sizeof(buf)); 503 st->cr(); 504 st->print_cr("#"); 505 } 506 STEP(63, "(printing core file information)") 507 st->print("# "); 508 if (coredump_status) { 509 st->print("Core dump written. Default location: %s", coredump_message); 510 } else { 511 st->print("Failed to write core dump. %s", coredump_message); 512 } 513 st->cr(); 514 st->print_cr("#"); 515 516 STEP(65, "(printing bug submit message)") 517 518 if (should_report_bug(_id) && _verbose) { 519 print_bug_submit_message(st, _thread); 520 } 521 522 STEP(70, "(printing thread)" ) 523 524 if (_verbose) { 525 st->cr(); 526 st->print_cr("--------------- T H R E A D ---------------"); 527 st->cr(); 528 } 529 530 STEP(80, "(printing current thread)" ) 531 532 // current thread 533 if (_verbose) { 534 if (_thread) { 535 st->print("Current thread (" PTR_FORMAT "): ", _thread); 536 _thread->print_on_error(st, buf, sizeof(buf)); 537 st->cr(); 538 } else { 539 st->print_cr("Current thread is native thread"); 540 } 541 st->cr(); 542 } 543 544 STEP(90, "(printing siginfo)" ) 545 546 // signal no, signal code, address that caused the fault 547 if (_verbose && _siginfo) { 548 os::print_siginfo(st, _siginfo); 549 st->cr(); 550 } 551 552 STEP(100, "(printing registers, top of stack, instructions near pc)") 553 554 // registers, top of stack, instructions near pc 555 if (_verbose && _context) { 556 os::print_context(st, _context); 557 st->cr(); 558 } 559 560 STEP(105, "(printing register info)") 561 562 // decode register contents if possible 563 if (_verbose && _context && Universe::is_fully_initialized()) { 564 os::print_register_info(st, _context); 565 st->cr(); 566 } 567 568 STEP(110, "(printing stack bounds)" ) 569 570 if (_verbose) { 571 st->print("Stack: "); 572 573 address stack_top; 574 size_t stack_size; 575 576 if (_thread) { 577 stack_top = _thread->stack_base(); 578 stack_size = _thread->stack_size(); 579 } else { 580 stack_top = os::current_stack_base(); 581 stack_size = os::current_stack_size(); 582 } 583 584 address stack_bottom = stack_top - stack_size; 585 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 586 587 frame fr = _context ? os::fetch_frame_from_context(_context) 588 : os::current_frame(); 589 590 if (fr.sp()) { 591 st->print(", sp=" PTR_FORMAT, fr.sp()); 592 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 593 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 594 } 595 596 st->cr(); 597 } 598 599 STEP(120, "(printing native stack)" ) 600 601 if (_verbose) { 602 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 603 // We have printed the native stack in platform-specific code 604 // Windows/x64 needs special handling. 605 } else { 606 frame fr = _context ? os::fetch_frame_from_context(_context) 607 : os::current_frame(); 608 609 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 610 } 611 } 612 613 STEP(130, "(printing Java stack)" ) 614 615 if (_verbose && _thread && _thread->is_Java_thread()) { 616 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 617 } 618 619 STEP(135, "(printing target Java thread stack)" ) 620 621 // printing Java thread stack trace if it is involved in GC crash 622 if (_verbose && _thread && (_thread->is_Named_thread())) { 623 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 624 if (jt != NULL) { 625 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 626 print_stack_trace(st, jt, buf, sizeof(buf), true); 627 } 628 } 629 630 STEP(140, "(printing VM operation)" ) 631 632 if (_verbose && _thread && _thread->is_VM_thread()) { 633 VMThread* t = (VMThread*)_thread; 634 VM_Operation* op = t->vm_operation(); 635 if (op) { 636 op->print_on_error(st); 637 st->cr(); 638 st->cr(); 639 } 640 } 641 642 STEP(150, "(printing current compile task)" ) 643 644 if (_verbose && _thread && _thread->is_Compiler_thread()) { 645 CompilerThread* t = (CompilerThread*)_thread; 646 if (t->task()) { 647 st->cr(); 648 st->print_cr("Current CompileTask:"); 649 t->task()->print_line_on_error(st, buf, sizeof(buf)); 650 st->cr(); 651 } 652 } 653 654 STEP(160, "(printing process)" ) 655 656 if (_verbose) { 657 st->cr(); 658 st->print_cr("--------------- P R O C E S S ---------------"); 659 st->cr(); 660 } 661 662 STEP(170, "(printing all threads)" ) 663 664 // all threads 665 if (_verbose && _thread) { 666 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 667 st->cr(); 668 } 669 670 STEP(175, "(printing VM state)" ) 671 672 if (_verbose) { 673 // Safepoint state 674 st->print("VM state:"); 675 676 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 677 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 678 else st->print("not at safepoint"); 679 680 // Also see if error occurred during initialization or shutdown 681 if (!Universe::is_fully_initialized()) { 682 st->print(" (not fully initialized)"); 683 } else if (VM_Exit::vm_exited()) { 684 st->print(" (shutting down)"); 685 } else { 686 st->print(" (normal execution)"); 687 } 688 st->cr(); 689 st->cr(); 690 } 691 692 STEP(180, "(printing owned locks on error)" ) 693 694 // mutexes/monitors that currently have an owner 695 if (_verbose) { 696 print_owned_locks_on_error(st); 697 st->cr(); 698 } 699 700 STEP(190, "(printing heap information)" ) 701 702 if (_verbose && Universe::is_fully_initialized()) { 703 Universe::heap()->print_on_error(st); 704 st->cr(); 705 706 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page()); 707 st->cr(); 708 } 709 710 STEP(195, "(printing code cache information)" ) 711 712 if (_verbose && Universe::is_fully_initialized()) { 713 // print code cache information before vm abort 714 CodeCache::print_summary(st); 715 st->cr(); 716 } 717 718 STEP(200, "(printing ring buffers)" ) 719 720 if (_verbose) { 721 Events::print_all(st); 722 st->cr(); 723 } 724 725 STEP(205, "(printing dynamic libraries)" ) 726 727 if (_verbose) { 728 // dynamic libraries, or memory map 729 os::print_dll_info(st); 730 st->cr(); 731 } 732 733 STEP(210, "(printing VM options)" ) 734 735 if (_verbose) { 736 // VM options 737 Arguments::print_on(st); 738 st->cr(); 739 } 740 741 STEP(215, "(printing warning if internal testing API used)" ) 742 743 if (WhiteBox::used()) { 744 st->print_cr("Unsupported internal testing APIs have been used."); 745 st->cr(); 746 } 747 748 STEP(220, "(printing environment variables)" ) 749 750 if (_verbose) { 751 os::print_environment_variables(st, env_list, buf, sizeof(buf)); 752 st->cr(); 753 } 754 755 STEP(225, "(printing signal handlers)" ) 756 757 if (_verbose) { 758 os::print_signal_handlers(st, buf, sizeof(buf)); 759 st->cr(); 760 } 761 762 STEP(228, "(Native Memory Tracking)" ) 763 if (_verbose) { 764 MemTracker::error_report(st); 765 } 766 767 STEP(230, "" ) 768 769 if (_verbose) { 770 st->cr(); 771 st->print_cr("--------------- S Y S T E M ---------------"); 772 st->cr(); 773 } 774 775 STEP(240, "(printing OS information)" ) 776 777 if (_verbose) { 778 os::print_os_info(st); 779 st->cr(); 780 } 781 782 STEP(250, "(printing CPU info)" ) 783 if (_verbose) { 784 os::print_cpu_info(st); 785 st->cr(); 786 } 787 788 STEP(260, "(printing memory info)" ) 789 790 if (_verbose) { 791 os::print_memory_info(st); 792 st->cr(); 793 } 794 795 STEP(270, "(printing internal vm info)" ) 796 797 if (_verbose) { 798 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 799 st->cr(); 800 } 801 802 STEP(280, "(printing date and time)" ) 803 804 if (_verbose) { 805 os::print_date_and_time(st); 806 st->cr(); 807 } 808 809 #ifndef PRODUCT 810 // print a defined marker to show that error handling finished correctly. 811 STEP(290, "(printing end marker)" ) 812 813 if (_verbose) { 814 st->print_cr("END."); 815 } 816 #endif 817 818 END 819 820 # undef BEGIN 821 # undef STEP 822 # undef END 823 } 824 825 VMError* volatile VMError::first_error = NULL; 826 volatile jlong VMError::first_error_tid = -1; 827 828 // An error could happen before tty is initialized or after it has been 829 // destroyed. Here we use a very simple unbuffered fdStream for printing. 830 // Only out.print_raw() and out.print_raw_cr() should be used, as other 831 // printing methods need to allocate large buffer on stack. To format a 832 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 833 fdStream VMError::out(defaultStream::output_fd()); 834 fdStream VMError::log; // error log used by VMError::report_and_die() 835 836 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 837 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 838 int fd = -1; 839 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 840 // the O_EXCL flag will cause the open to fail if the file exists 841 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 842 } 843 return fd; 844 } 845 846 /** 847 * Construct file name for a log file and return it's file descriptor. 848 * Name and location depends on pattern, default_pattern params and access 849 * permissions. 850 */ 851 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 852 int fd = -1; 853 854 // If possible, use specified pattern to construct log file name 855 if (pattern != NULL) { 856 fd = expand_and_open(pattern, buf, buflen, 0); 857 } 858 859 // Either user didn't specify, or the user's location failed, 860 // so use the default name in the current directory 861 if (fd == -1) { 862 const char* cwd = os::get_current_directory(buf, buflen); 863 if (cwd != NULL) { 864 size_t pos = strlen(cwd); 865 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 866 pos += fsep_len; 867 if (fsep_len > 0) { 868 fd = expand_and_open(default_pattern, buf, buflen, pos); 869 } 870 } 871 } 872 873 // try temp directory if it exists. 874 if (fd == -1) { 875 const char* tmpdir = os::get_temp_directory(); 876 if (tmpdir != NULL && strlen(tmpdir) > 0) { 877 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 878 if (pos > 0) { 879 fd = expand_and_open(default_pattern, buf, buflen, pos); 880 } 881 } 882 } 883 884 return fd; 885 } 886 887 void VMError::report_and_die() { 888 // Don't allocate large buffer on stack 889 static char buffer[O_BUFLEN]; 890 891 // How many errors occurred in error handler when reporting first_error. 892 static int recursive_error_count; 893 894 // We will first print a brief message to standard out (verbose = false), 895 // then save detailed information in log file (verbose = true). 896 static bool out_done = false; // done printing to standard out 897 static bool log_done = false; // done saving error log 898 static bool transmit_report_done = false; // done error reporting 899 900 if (SuppressFatalErrorMessage) { 901 os::abort(); 902 } 903 jlong mytid = os::current_thread_id(); 904 if (first_error == NULL && 905 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 906 907 // first time 908 first_error_tid = mytid; 909 set_error_reported(); 910 911 if (ShowMessageBoxOnError || PauseAtExit) { 912 show_message_box(buffer, sizeof(buffer)); 913 914 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 915 // WatcherThread can kill JVM if the error handler hangs. 916 ShowMessageBoxOnError = false; 917 } 918 919 // Write a minidump on Windows, check core dump limits on Linux/Solaris 920 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer)); 921 922 // reset signal handlers or exception filter; make sure recursive crashes 923 // are handled properly. 924 reset_signal_handlers(); 925 926 } else { 927 // If UseOsErrorReporting we call this for each level of the call stack 928 // while searching for the exception handler. Only the first level needs 929 // to be reported. 930 if (UseOSErrorReporting && log_done) return; 931 932 // This is not the first error, see if it happened in a different thread 933 // or in the same thread during error reporting. 934 if (first_error_tid != mytid) { 935 char msgbuf[64]; 936 jio_snprintf(msgbuf, sizeof(msgbuf), 937 "[thread " INT64_FORMAT " also had an error]", 938 mytid); 939 out.print_raw_cr(msgbuf); 940 941 // error reporting is not MT-safe, block current thread 942 os::infinite_sleep(); 943 944 } else { 945 if (recursive_error_count++ > 30) { 946 out.print_raw_cr("[Too many errors, abort]"); 947 os::die(); 948 } 949 950 jio_snprintf(buffer, sizeof(buffer), 951 "[error occurred during error reporting %s, id 0x%x]", 952 first_error ? first_error->_current_step_info : "", 953 _id); 954 if (log.is_open()) { 955 log.cr(); 956 log.print_raw_cr(buffer); 957 log.cr(); 958 } else { 959 out.cr(); 960 out.print_raw_cr(buffer); 961 out.cr(); 962 } 963 } 964 } 965 966 // print to screen 967 if (!out_done) { 968 first_error->_verbose = false; 969 970 staticBufferStream sbs(buffer, sizeof(buffer), &out); 971 first_error->report(&sbs); 972 973 out_done = true; 974 975 first_error->_current_step = 0; // reset current_step 976 first_error->_current_step_info = ""; // reset current_step string 977 } 978 979 // print to error log file 980 if (!log_done) { 981 first_error->_verbose = true; 982 983 // see if log file is already open 984 if (!log.is_open()) { 985 // open log file 986 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 987 if (fd != -1) { 988 out.print_raw("# An error report file with more information is saved as:\n# "); 989 out.print_raw_cr(buffer); 990 991 log.set_fd(fd); 992 } else { 993 out.print_raw_cr("# Can not save log file, dump to screen.."); 994 log.set_fd(defaultStream::output_fd()); 995 /* Error reporting currently needs dumpfile. 996 * Maybe implement direct streaming in the future.*/ 997 transmit_report_done = true; 998 } 999 } 1000 1001 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1002 first_error->report(&sbs); 1003 first_error->_current_step = 0; // reset current_step 1004 first_error->_current_step_info = ""; // reset current_step string 1005 1006 // Run error reporting to determine whether or not to report the crash. 1007 if (!transmit_report_done && should_report_bug(first_error->_id)) { 1008 transmit_report_done = true; 1009 const int fd2 = ::dup(log.fd()); 1010 FILE* const hs_err = ::fdopen(fd2, "r"); 1011 if (NULL != hs_err) { 1012 ErrorReporter er; 1013 er.call(hs_err, buffer, O_BUFLEN); 1014 } 1015 ::fclose(hs_err); 1016 } 1017 1018 if (log.fd() != defaultStream::output_fd()) { 1019 close(log.fd()); 1020 } 1021 1022 log.set_fd(-1); 1023 log_done = true; 1024 } 1025 1026 1027 static bool skip_OnError = false; 1028 if (!skip_OnError && OnError && OnError[0]) { 1029 skip_OnError = true; 1030 1031 out.print_raw_cr("#"); 1032 out.print_raw ("# -XX:OnError=\""); 1033 out.print_raw (OnError); 1034 out.print_raw_cr("\""); 1035 1036 char* cmd; 1037 const char* ptr = OnError; 1038 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1039 out.print_raw ("# Executing "); 1040 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1041 out.print_raw ("/bin/sh -c "); 1042 #elif defined(SOLARIS) 1043 out.print_raw ("/usr/bin/sh -c "); 1044 #endif 1045 out.print_raw ("\""); 1046 out.print_raw (cmd); 1047 out.print_raw_cr("\" ..."); 1048 1049 os::fork_and_exec(cmd); 1050 } 1051 1052 // done with OnError 1053 OnError = NULL; 1054 } 1055 1056 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1057 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1058 skip_replay = true; 1059 ciEnv* env = ciEnv::current(); 1060 if (env != NULL) { 1061 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1062 if (fd != -1) { 1063 FILE* replay_data_file = os::open(fd, "w"); 1064 if (replay_data_file != NULL) { 1065 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1066 env->dump_replay_data_unsafe(&replay_data_stream); 1067 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1068 out.print_raw_cr(buffer); 1069 } else { 1070 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1071 out.print_raw_cr(strerror(os::get_last_error())); 1072 } 1073 } 1074 } 1075 } 1076 1077 static bool skip_bug_url = !should_report_bug(first_error->_id); 1078 if (!skip_bug_url) { 1079 skip_bug_url = true; 1080 1081 out.print_raw_cr("#"); 1082 print_bug_submit_message(&out, _thread); 1083 } 1084 1085 if (!UseOSErrorReporting) { 1086 // os::abort() will call abort hooks, try it first. 1087 static bool skip_os_abort = false; 1088 if (!skip_os_abort) { 1089 skip_os_abort = true; 1090 bool dump_core = should_report_bug(first_error->_id); 1091 os::abort(dump_core); 1092 } 1093 1094 // if os::abort() doesn't abort, try os::die(); 1095 os::die(); 1096 } 1097 } 1098 1099 /* 1100 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1101 * ensures utilities such as jmap can observe the process is a consistent state. 1102 */ 1103 class VM_ReportJavaOutOfMemory : public VM_Operation { 1104 private: 1105 VMError *_err; 1106 public: 1107 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 1108 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1109 void doit(); 1110 }; 1111 1112 void VM_ReportJavaOutOfMemory::doit() { 1113 // Don't allocate large buffer on stack 1114 static char buffer[O_BUFLEN]; 1115 1116 tty->print_cr("#"); 1117 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 1118 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1119 1120 // make heap parsability 1121 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1122 1123 char* cmd; 1124 const char* ptr = OnOutOfMemoryError; 1125 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1126 tty->print("# Executing "); 1127 #if defined(LINUX) 1128 tty->print ("/bin/sh -c "); 1129 #elif defined(SOLARIS) 1130 tty->print ("/usr/bin/sh -c "); 1131 #endif 1132 tty->print_cr("\"%s\"...", cmd); 1133 1134 os::fork_and_exec(cmd); 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 }