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