1 /* 2 * Copyright (c) 2003, 2013, 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 "prims/whitebox.hpp" 29 #include "runtime/arguments.hpp" 30 #include "runtime/frame.inline.hpp" 31 #include "runtime/init.hpp" 32 #include "runtime/os.hpp" 33 #include "runtime/thread.hpp" 34 #include "runtime/vmThread.hpp" 35 #include "runtime/vm_operations.hpp" 36 #include "services/memTracker.hpp" 37 #include "utilities/debug.hpp" 38 #include "utilities/decoder.hpp" 39 #include "utilities/defaultStream.hpp" 40 #include "utilities/errorReporter.hpp" 41 #include "utilities/events.hpp" 42 #include "utilities/top.hpp" 43 #include "utilities/vmError.hpp" 44 45 // List of environment variables that should be reported in error log file. 46 const char *env_list[] = { 47 // All platforms 48 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 49 "JAVA_COMPILER", "PATH", "USERNAME", 50 51 // Env variables that are defined on Solaris/Linux/BSD 52 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 53 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 54 55 // defined on Linux 56 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 57 58 // defined on Darwin 59 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH", 60 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH", 61 "DYLD_INSERT_LIBRARIES", 62 63 // defined on Windows 64 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 65 66 (const char *)0 67 }; 68 69 // Fatal error handler for internal errors and crashes. 70 // 71 // The default behavior of fatal error handler is to print a brief message 72 // to standard out (defaultStream::output_fd()), then save detailed information 73 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple 74 // threads are having troubles at the same time, only one error is reported. 75 // The thread that is reporting error will abort VM when it is done, all other 76 // threads are blocked forever inside report_and_die(). 77 78 // Constructor for crashes 79 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) { 80 _thread = thread; 81 _id = sig; 82 _pc = pc; 83 _siginfo = siginfo; 84 _context = context; 85 86 _verbose = false; 87 _current_step = 0; 88 _current_step_info = NULL; 89 90 _message = NULL; 91 _detail_msg = NULL; 92 _filename = NULL; 93 _lineno = 0; 94 95 _size = 0; 96 } 97 98 // Constructor for internal errors 99 VMError::VMError(Thread* thread, const char* filename, int lineno, 100 const char* message, const char * detail_msg) 101 { 102 _thread = thread; 103 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal 104 _filename = filename; 105 _lineno = lineno; 106 _message = message; 107 _detail_msg = detail_msg; 108 109 _verbose = false; 110 _current_step = 0; 111 _current_step_info = NULL; 112 113 _pc = NULL; 114 _siginfo = NULL; 115 _context = NULL; 116 117 _size = 0; 118 } 119 120 // Constructor for OOM errors 121 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size, 122 VMErrorType vm_err_type, const char* message) { 123 _thread = thread; 124 _id = vm_err_type; // Value that's not an OS exception/signal 125 _filename = filename; 126 _lineno = lineno; 127 _message = message; 128 _detail_msg = NULL; 129 130 _verbose = false; 131 _current_step = 0; 132 _current_step_info = NULL; 133 134 _pc = NULL; 135 _siginfo = NULL; 136 _context = NULL; 137 138 _size = size; 139 } 140 141 142 // Constructor for non-fatal errors 143 VMError::VMError(const char* message) { 144 _thread = NULL; 145 _id = INTERNAL_ERROR; // Value that's not an OS exception/signal 146 _filename = NULL; 147 _lineno = 0; 148 _message = message; 149 _detail_msg = NULL; 150 151 _verbose = false; 152 _current_step = 0; 153 _current_step_info = NULL; 154 155 _pc = NULL; 156 _siginfo = NULL; 157 _context = NULL; 158 159 _size = 0; 160 } 161 162 // -XX:OnError=<string>, where <string> can be a list of commands, separated 163 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by 164 // a single "%". Some examples: 165 // 166 // -XX:OnError="pmap %p" // show memory map 167 // -XX:OnError="gcore %p; dbx - %p" // dump core and launch debugger 168 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com" 169 // -XX:OnError="kill -9 %p" // ?#!@# 170 171 // A simple parser for -XX:OnError, usage: 172 // ptr = OnError; 173 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 174 // ... ... 175 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 176 if (ptr == NULL || *ptr == NULL) return NULL; 177 178 const char* cmd = *ptr; 179 180 // skip leading blanks or ';' 181 while (*cmd == ' ' || *cmd == ';') cmd++; 182 183 if (*cmd == '\0') return NULL; 184 185 const char * cmdend = cmd; 186 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 187 188 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 189 190 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 191 return buf; 192 } 193 194 195 static void print_bug_submit_message(outputStream *out, Thread *thread) { 196 if (out == NULL) return; 197 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 198 out->print_raw ("# "); 199 out->print_raw_cr(Arguments::java_vendor_url_bug()); 200 // If the crash is in native code, encourage user to submit a bug to the 201 // provider of that code. 202 if (thread && thread->is_Java_thread() && 203 !thread->is_hidden_from_external_view()) { 204 JavaThread* jt = (JavaThread*)thread; 205 if (jt->thread_state() == _thread_in_native) { 206 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 207 } 208 } 209 out->print_raw_cr("#"); 210 } 211 212 bool VMError::coredump_status; 213 char VMError::coredump_message[O_BUFLEN]; 214 215 void VMError::report_coredump_status(const char* message, bool status) { 216 coredump_status = status; 217 strncpy(coredump_message, message, sizeof(coredump_message)); 218 coredump_message[sizeof(coredump_message)-1] = 0; 219 } 220 221 222 // Return a string to describe the error 223 char* VMError::error_string(char* buf, int buflen) { 224 char signame_buf[64]; 225 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 226 227 if (signame) { 228 jio_snprintf(buf, buflen, 229 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 230 signame, _id, _pc, 231 os::current_process_id(), os::current_thread_id()); 232 } else if (_filename != NULL && _lineno > 0) { 233 // skip directory names 234 char separator = os::file_separator()[0]; 235 const char *p = strrchr(_filename, separator); 236 int n = jio_snprintf(buf, buflen, 237 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 238 p ? p + 1 : _filename, _lineno, 239 os::current_process_id(), os::current_thread_id()); 240 if (n >= 0 && n < buflen && _message) { 241 if (_detail_msg) { 242 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 243 os::line_separator(), _message, _detail_msg); 244 } else { 245 jio_snprintf(buf + n, buflen - n, "%sError: %s", 246 os::line_separator(), _message); 247 } 248 } 249 } else { 250 jio_snprintf(buf, buflen, 251 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 252 _id, os::current_process_id(), os::current_thread_id()); 253 } 254 255 return buf; 256 } 257 258 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 259 char* buf, int buflen, bool verbose) { 260 #ifdef ZERO 261 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 262 // StackFrameStream uses the frame anchor, which may not have 263 // been set up. This can be done at any time in Zero, however, 264 // so if it hasn't been set up then we just set it up now and 265 // clear it again when we're done. 266 bool has_last_Java_frame = jt->has_last_Java_frame(); 267 if (!has_last_Java_frame) 268 jt->set_last_Java_frame(); 269 st->print("Java frames:"); 270 271 // If the top frame is a Shark frame and the frame anchor isn't 272 // set up then it's possible that the information in the frame 273 // is garbage: it could be from a previous decache, or it could 274 // simply have never been written. So we print a warning... 275 StackFrameStream sfs(jt); 276 if (!has_last_Java_frame && !sfs.is_done()) { 277 if (sfs.current()->zeroframe()->is_shark_frame()) { 278 st->print(" (TOP FRAME MAY BE JUNK)"); 279 } 280 } 281 st->cr(); 282 283 // Print the frames 284 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 285 sfs.current()->zero_print_on_error(i, st, buf, buflen); 286 st->cr(); 287 } 288 289 // Reset the frame anchor if necessary 290 if (!has_last_Java_frame) 291 jt->reset_last_Java_frame(); 292 } 293 #else 294 if (jt->has_last_Java_frame()) { 295 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 296 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 297 sfs.current()->print_on_error(st, buf, buflen, verbose); 298 st->cr(); 299 } 300 } 301 #endif // ZERO 302 } 303 304 // This is the main function to report a fatal error. Only one thread can 305 // call this function, so we don't need to worry about MT-safety. But it's 306 // possible that the error handler itself may crash or die on an internal 307 // error, for example, when the stack/heap is badly damaged. We must be 308 // able to handle recursive errors that happen inside error handler. 309 // 310 // Error reporting is done in several steps. If a crash or internal error 311 // occurred when reporting an error, the nested signal/exception handler 312 // can skip steps that are already (or partially) done. Error reporting will 313 // continue from the next step. This allows us to retrieve and print 314 // information that may be unsafe to get after a fatal error. If it happens, 315 // you may find nested report_and_die() frames when you look at the stack 316 // in a debugger. 317 // 318 // In general, a hang in error handler is much worse than a crash or internal 319 // error, as it's harder to recover from a hang. Deadlock can happen if we 320 // try to grab a lock that is already owned by current thread, or if the 321 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 322 // error handler and all the functions it called should avoid grabbing any 323 // lock. An important thing to notice is that memory allocation needs a lock. 324 // 325 // We should avoid using large stack allocated buffers. Many errors happen 326 // when stack space is already low. Making things even worse is that there 327 // could be nested report_and_die() calls on stack (see above). Only one 328 // thread can report error, so large buffers are statically allocated in data 329 // segment. 330 331 void VMError::report(outputStream* st) { 332 # define BEGIN if (_current_step == 0) { _current_step = 1; 333 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s; 334 # define END } 335 336 // don't allocate large buffer on stack 337 static char buf[O_BUFLEN]; 338 339 BEGIN 340 341 STEP(10, "(printing fatal error message)") 342 343 st->print_cr("#"); 344 if (should_report_bug(_id)) { 345 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 346 } else { 347 st->print_cr("# There is insufficient memory for the Java " 348 "Runtime Environment to continue."); 349 } 350 351 STEP(15, "(printing type of error)") 352 353 switch(_id) { 354 case OOM_MALLOC_ERROR: 355 case OOM_MMAP_ERROR: 356 if (_size) { 357 st->print("# Native memory allocation "); 358 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 359 "(mmap) failed to map "); 360 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 361 st->print(buf); 362 st->print(" bytes"); 363 if (_message != NULL) { 364 st->print(" for "); 365 st->print(_message); 366 } 367 st->cr(); 368 } else { 369 if (_message != NULL) 370 st->print("# "); 371 st->print_cr(_message); 372 } 373 // In error file give some solutions 374 if (_verbose) { 375 st->print_cr("# Possible reasons:"); 376 st->print_cr("# The system is out of physical RAM or swap space"); 377 st->print_cr("# In 32 bit mode, the process size limit was hit"); 378 st->print_cr("# Possible solutions:"); 379 st->print_cr("# Reduce memory load on the system"); 380 st->print_cr("# Increase physical memory or swap space"); 381 st->print_cr("# Check if swap backing store is full"); 382 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 383 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 384 st->print_cr("# Decrease number of Java threads"); 385 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 386 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 387 st->print_cr("# This output file may be truncated or incomplete."); 388 } else { 389 return; // that's enough for the screen 390 } 391 break; 392 case INTERNAL_ERROR: 393 default: 394 break; 395 } 396 397 STEP(20, "(printing exception/signal name)") 398 399 st->print_cr("#"); 400 st->print("# "); 401 // Is it an OS exception/signal? 402 if (os::exception_name(_id, buf, sizeof(buf))) { 403 st->print("%s", buf); 404 st->print(" (0x%x)", _id); // signal number 405 st->print(" at pc=" PTR_FORMAT, _pc); 406 } else { 407 if (should_report_bug(_id)) { 408 st->print("Internal Error"); 409 } else { 410 st->print("Out of Memory Error"); 411 } 412 if (_filename != NULL && _lineno > 0) { 413 #ifdef PRODUCT 414 // In product mode chop off pathname? 415 char separator = os::file_separator()[0]; 416 const char *p = strrchr(_filename, separator); 417 const char *file = p ? p+1 : _filename; 418 #else 419 const char *file = _filename; 420 #endif 421 size_t len = strlen(file); 422 size_t buflen = sizeof(buf); 423 424 strncpy(buf, file, buflen); 425 if (len + 10 < buflen) { 426 sprintf(buf + len, ":%d", _lineno); 427 } 428 st->print(" (%s)", buf); 429 } else { 430 st->print(" (0x%x)", _id); 431 } 432 } 433 434 STEP(30, "(printing current thread and pid)") 435 436 // process id, thread id 437 st->print(", pid=%d", os::current_process_id()); 438 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 439 st->cr(); 440 441 STEP(40, "(printing error message)") 442 443 if (should_report_bug(_id)) { // already printed the message. 444 // error message 445 if (_detail_msg) { 446 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 447 } else if (_message) { 448 st->print_cr("# Error: %s", _message); 449 } 450 } 451 452 STEP(50, "(printing Java version string)") 453 454 // VM version 455 st->print_cr("#"); 456 JDK_Version::current().to_string(buf, sizeof(buf)); 457 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 458 JDK_Version::runtime_name() : ""; 459 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 460 JDK_Version::runtime_version() : ""; 461 st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version); 462 st->print_cr("# Java VM: %s (%s %s %s %s)", 463 Abstract_VM_Version::vm_name(), 464 Abstract_VM_Version::vm_release(), 465 Abstract_VM_Version::vm_info_string(), 466 Abstract_VM_Version::vm_platform_string(), 467 UseCompressedOops ? "compressed oops" : "" 468 ); 469 470 STEP(60, "(printing problematic frame)") 471 472 // Print current frame if we have a context (i.e. it's a crash) 473 if (_context) { 474 st->print_cr("# Problematic frame:"); 475 st->print("# "); 476 frame fr = os::fetch_frame_from_context(_context); 477 fr.print_on_error(st, buf, sizeof(buf)); 478 st->cr(); 479 st->print_cr("#"); 480 } 481 STEP(63, "(printing core file information)") 482 st->print("# "); 483 if (coredump_status) { 484 st->print("Core dump written. Default location: %s", coredump_message); 485 } else { 486 st->print("Failed to write core dump. %s", coredump_message); 487 } 488 st->print_cr(""); 489 st->print_cr("#"); 490 491 STEP(65, "(printing bug submit message)") 492 493 if (should_report_bug(_id) && _verbose) { 494 print_bug_submit_message(st, _thread); 495 } 496 497 STEP(70, "(printing thread)" ) 498 499 if (_verbose) { 500 st->cr(); 501 st->print_cr("--------------- T H R E A D ---------------"); 502 st->cr(); 503 } 504 505 STEP(80, "(printing current thread)" ) 506 507 // current thread 508 if (_verbose) { 509 if (_thread) { 510 st->print("Current thread (" PTR_FORMAT "): ", _thread); 511 _thread->print_on_error(st, buf, sizeof(buf)); 512 st->cr(); 513 } else { 514 st->print_cr("Current thread is native thread"); 515 } 516 st->cr(); 517 } 518 519 STEP(90, "(printing siginfo)" ) 520 521 // signal no, signal code, address that caused the fault 522 if (_verbose && _siginfo) { 523 os::print_siginfo(st, _siginfo); 524 st->cr(); 525 } 526 527 STEP(100, "(printing registers, top of stack, instructions near pc)") 528 529 // registers, top of stack, instructions near pc 530 if (_verbose && _context) { 531 os::print_context(st, _context); 532 st->cr(); 533 } 534 535 STEP(105, "(printing register info)") 536 537 // decode register contents if possible 538 if (_verbose && _context && Universe::is_fully_initialized()) { 539 os::print_register_info(st, _context); 540 st->cr(); 541 } 542 543 STEP(110, "(printing stack bounds)" ) 544 545 if (_verbose) { 546 st->print("Stack: "); 547 548 address stack_top; 549 size_t stack_size; 550 551 if (_thread) { 552 stack_top = _thread->stack_base(); 553 stack_size = _thread->stack_size(); 554 } else { 555 stack_top = os::current_stack_base(); 556 stack_size = os::current_stack_size(); 557 } 558 559 address stack_bottom = stack_top - stack_size; 560 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top); 561 562 frame fr = _context ? os::fetch_frame_from_context(_context) 563 : os::current_frame(); 564 565 if (fr.sp()) { 566 st->print(", sp=" PTR_FORMAT, fr.sp()); 567 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 568 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 569 } 570 571 st->cr(); 572 } 573 574 STEP(120, "(printing native stack)" ) 575 576 if (_verbose) { 577 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 578 // We have printed the native stack in platform-specific code 579 // Windows/x64 needs special handling. 580 } else { 581 frame fr = _context ? os::fetch_frame_from_context(_context) 582 : os::current_frame(); 583 584 // see if it's a valid frame 585 if (fr.pc()) { 586 st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)"); 587 588 589 int count = 0; 590 while (count++ < StackPrintLimit) { 591 fr.print_on_error(st, buf, sizeof(buf)); 592 st->cr(); 593 // Compiled code may use EBP register on x86 so it looks like 594 // non-walkable C frame. Use frame.sender() for java frames. 595 if (_thread && _thread->is_Java_thread()) { 596 // Catch very first native frame by using stack address. 597 // For JavaThread stack_base and stack_size should be set. 598 if (!_thread->on_local_stack((address)(fr.sender_sp() + 1))) 599 break; 600 if (fr.is_java_frame()) { 601 RegisterMap map((JavaThread*)_thread, false); // No update 602 fr = fr.sender(&map); 603 } else { 604 fr = os::get_sender_for_C_frame(&fr); 605 } 606 } else { 607 // is_first_C_frame() does only simple checks for frame pointer, 608 // it will pass if java compiled code has a pointer in EBP. 609 if (os::is_first_C_frame(&fr)) break; 610 fr = os::get_sender_for_C_frame(&fr); 611 } 612 } 613 614 if (count > StackPrintLimit) { 615 st->print_cr("...<more frames>..."); 616 } 617 618 st->cr(); 619 } 620 } 621 } 622 623 STEP(130, "(printing Java stack)" ) 624 625 if (_verbose && _thread && _thread->is_Java_thread()) { 626 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 627 } 628 629 STEP(135, "(printing target Java thread stack)" ) 630 631 // printing Java thread stack trace if it is involved in GC crash 632 if (_verbose && _thread && (_thread->is_Named_thread())) { 633 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 634 if (jt != NULL) { 635 st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id()); 636 print_stack_trace(st, jt, buf, sizeof(buf), true); 637 } 638 } 639 640 STEP(140, "(printing VM operation)" ) 641 642 if (_verbose && _thread && _thread->is_VM_thread()) { 643 VMThread* t = (VMThread*)_thread; 644 VM_Operation* op = t->vm_operation(); 645 if (op) { 646 op->print_on_error(st); 647 st->cr(); 648 st->cr(); 649 } 650 } 651 652 STEP(150, "(printing current compile task)" ) 653 654 if (_verbose && _thread && _thread->is_Compiler_thread()) { 655 CompilerThread* t = (CompilerThread*)_thread; 656 if (t->task()) { 657 st->cr(); 658 st->print_cr("Current CompileTask:"); 659 t->task()->print_line_on_error(st, buf, sizeof(buf)); 660 st->cr(); 661 } 662 } 663 664 STEP(160, "(printing process)" ) 665 666 if (_verbose) { 667 st->cr(); 668 st->print_cr("--------------- P R O C E S S ---------------"); 669 st->cr(); 670 } 671 672 STEP(170, "(printing all threads)" ) 673 674 // all threads 675 if (_verbose && _thread) { 676 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 677 st->cr(); 678 } 679 680 STEP(175, "(printing VM state)" ) 681 682 if (_verbose) { 683 // Safepoint state 684 st->print("VM state:"); 685 686 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 687 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 688 else st->print("not at safepoint"); 689 690 // Also see if error occurred during initialization or shutdown 691 if (!Universe::is_fully_initialized()) { 692 st->print(" (not fully initialized)"); 693 } else if (VM_Exit::vm_exited()) { 694 st->print(" (shutting down)"); 695 } else { 696 st->print(" (normal execution)"); 697 } 698 st->cr(); 699 st->cr(); 700 } 701 702 STEP(180, "(printing owned locks on error)" ) 703 704 // mutexes/monitors that currently have an owner 705 if (_verbose) { 706 print_owned_locks_on_error(st); 707 st->cr(); 708 } 709 710 STEP(190, "(printing heap information)" ) 711 712 if (_verbose && Universe::is_fully_initialized()) { 713 Universe::heap()->print_on_error(st); 714 st->cr(); 715 716 st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page()); 717 st->cr(); 718 } 719 720 STEP(195, "(printing code cache information)" ) 721 722 if (_verbose && Universe::is_fully_initialized()) { 723 // print code cache information before vm abort 724 CodeCache::print_summary(st); 725 st->cr(); 726 } 727 728 STEP(200, "(printing ring buffers)" ) 729 730 if (_verbose) { 731 Events::print_all(st); 732 st->cr(); 733 } 734 735 STEP(205, "(printing dynamic libraries)" ) 736 737 if (_verbose) { 738 // dynamic libraries, or memory map 739 os::print_dll_info(st); 740 st->cr(); 741 } 742 743 STEP(210, "(printing VM options)" ) 744 745 if (_verbose) { 746 // VM options 747 Arguments::print_on(st); 748 st->cr(); 749 } 750 751 STEP(215, "(printing warning if internal testing API used)" ) 752 753 if (WhiteBox::used()) { 754 st->print_cr("Unsupported internal testing APIs have been used."); 755 st->cr(); 756 } 757 758 STEP(220, "(printing environment variables)" ) 759 760 if (_verbose) { 761 os::print_environment_variables(st, env_list, buf, sizeof(buf)); 762 st->cr(); 763 } 764 765 STEP(225, "(printing signal handlers)" ) 766 767 if (_verbose) { 768 os::print_signal_handlers(st, buf, sizeof(buf)); 769 st->cr(); 770 } 771 772 STEP(230, "" ) 773 774 if (_verbose) { 775 st->cr(); 776 st->print_cr("--------------- S Y S T E M ---------------"); 777 st->cr(); 778 } 779 780 STEP(240, "(printing OS information)" ) 781 782 if (_verbose) { 783 os::print_os_info(st); 784 st->cr(); 785 } 786 787 STEP(250, "(printing CPU info)" ) 788 if (_verbose) { 789 os::print_cpu_info(st); 790 st->cr(); 791 } 792 793 STEP(260, "(printing memory info)" ) 794 795 if (_verbose) { 796 os::print_memory_info(st); 797 st->cr(); 798 } 799 800 STEP(270, "(printing internal vm info)" ) 801 802 if (_verbose) { 803 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 804 st->cr(); 805 } 806 807 STEP(280, "(printing date and time)" ) 808 809 if (_verbose) { 810 os::print_date_and_time(st); 811 st->cr(); 812 } 813 814 END 815 816 # undef BEGIN 817 # undef STEP 818 # undef END 819 } 820 821 VMError* volatile VMError::first_error = NULL; 822 volatile jlong VMError::first_error_tid = -1; 823 824 // An error could happen before tty is initialized or after it has been 825 // destroyed. Here we use a very simple unbuffered fdStream for printing. 826 // Only out.print_raw() and out.print_raw_cr() should be used, as other 827 // printing methods need to allocate large buffer on stack. To format a 828 // string, use jio_snprintf() with a static buffer or use staticBufferStream. 829 fdStream VMError::out(defaultStream::output_fd()); 830 fdStream VMError::log; // error log used by VMError::report_and_die() 831 832 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 833 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 834 int fd = -1; 835 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 836 fd = open(buf, O_RDWR | O_CREAT | O_TRUNC, 0666); 837 } 838 return fd; 839 } 840 841 /** 842 * Construct file name for a log file and return it's file descriptor. 843 * Name and location depends on pattern, default_pattern params and access 844 * permissions. 845 */ 846 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 847 int fd = -1; 848 849 // If possible, use specified pattern to construct log file name 850 if (pattern != NULL) { 851 fd = expand_and_open(pattern, buf, buflen, 0); 852 } 853 854 // Either user didn't specify, or the user's location failed, 855 // so use the default name in the current directory 856 if (fd == -1) { 857 const char* cwd = os::get_current_directory(buf, buflen); 858 if (cwd != NULL) { 859 size_t pos = strlen(cwd); 860 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 861 pos += fsep_len; 862 if (fsep_len > 0) { 863 fd = expand_and_open(default_pattern, buf, buflen, pos); 864 } 865 } 866 } 867 868 // try temp directory if it exists. 869 if (fd == -1) { 870 const char* tmpdir = os::get_temp_directory(); 871 if (tmpdir != NULL && strlen(tmpdir) > 0) { 872 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 873 if (pos > 0) { 874 fd = expand_and_open(default_pattern, buf, buflen, pos); 875 } 876 } 877 } 878 879 return fd; 880 } 881 882 void VMError::report_and_die() { 883 // Don't allocate large buffer on stack 884 static char buffer[O_BUFLEN]; 885 886 // How many errors occurred in error handler when reporting first_error. 887 static int recursive_error_count; 888 889 // We will first print a brief message to standard out (verbose = false), 890 // then save detailed information in log file (verbose = true). 891 static bool out_done = false; // done printing to standard out 892 static bool log_done = false; // done saving error log 893 static bool transmit_report_done = false; // done error reporting 894 895 // disble NMT to avoid further exception 896 MemTracker::shutdown(MemTracker::NMT_error_reporting); 897 898 if (SuppressFatalErrorMessage) { 899 os::abort(); 900 } 901 jlong mytid = os::current_thread_id(); 902 if (first_error == NULL && 903 Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) { 904 905 // first time 906 first_error_tid = mytid; 907 set_error_reported(); 908 909 if (ShowMessageBoxOnError || PauseAtExit) { 910 show_message_box(buffer, sizeof(buffer)); 911 912 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 913 // WatcherThread can kill JVM if the error handler hangs. 914 ShowMessageBoxOnError = false; 915 } 916 917 // Write a minidump on Windows, check core dump limits on Linux/Solaris 918 os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer)); 919 920 // reset signal handlers or exception filter; make sure recursive crashes 921 // are handled properly. 922 reset_signal_handlers(); 923 924 } else { 925 // If UseOsErrorReporting we call this for each level of the call stack 926 // while searching for the exception handler. Only the first level needs 927 // to be reported. 928 if (UseOSErrorReporting && log_done) return; 929 930 // This is not the first error, see if it happened in a different thread 931 // or in the same thread during error reporting. 932 if (first_error_tid != mytid) { 933 char msgbuf[64]; 934 jio_snprintf(msgbuf, sizeof(msgbuf), 935 "[thread " INT64_FORMAT " also had an error]", 936 mytid); 937 out.print_raw_cr(msgbuf); 938 939 // error reporting is not MT-safe, block current thread 940 os::infinite_sleep(); 941 942 } else { 943 if (recursive_error_count++ > 30) { 944 out.print_raw_cr("[Too many errors, abort]"); 945 os::die(); 946 } 947 948 jio_snprintf(buffer, sizeof(buffer), 949 "[error occurred during error reporting %s, id 0x%x]", 950 first_error ? first_error->_current_step_info : "", 951 _id); 952 if (log.is_open()) { 953 log.cr(); 954 log.print_raw_cr(buffer); 955 log.cr(); 956 } else { 957 out.cr(); 958 out.print_raw_cr(buffer); 959 out.cr(); 960 } 961 } 962 } 963 964 // print to screen 965 if (!out_done) { 966 first_error->_verbose = false; 967 968 staticBufferStream sbs(buffer, sizeof(buffer), &out); 969 first_error->report(&sbs); 970 971 out_done = true; 972 973 first_error->_current_step = 0; // reset current_step 974 first_error->_current_step_info = ""; // reset current_step string 975 } 976 977 // print to error log file 978 if (!log_done) { 979 first_error->_verbose = true; 980 981 // see if log file is already open 982 if (!log.is_open()) { 983 // open log file 984 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 985 if (fd != -1) { 986 out.print_raw("# An error report file with more information is saved as:\n# "); 987 out.print_raw_cr(buffer); 988 os::set_error_file(buffer); 989 990 log.set_fd(fd); 991 } else { 992 out.print_raw_cr("# Can not save log file, dump to screen.."); 993 log.set_fd(defaultStream::output_fd()); 994 /* Error reporting currently needs dumpfile. 995 * Maybe implement direct streaming in the future.*/ 996 transmit_report_done = true; 997 } 998 } 999 1000 staticBufferStream sbs(buffer, O_BUFLEN, &log); 1001 first_error->report(&sbs); 1002 first_error->_current_step = 0; // reset current_step 1003 first_error->_current_step_info = ""; // reset current_step string 1004 1005 // Run error reporting to determine whether or not to report the crash. 1006 if (!transmit_report_done && should_report_bug(first_error->_id)) { 1007 transmit_report_done = true; 1008 FILE* hs_err = os::open(log.fd(), "r"); 1009 if (NULL != hs_err) { 1010 ErrorReporter er; 1011 er.call(hs_err, buffer, O_BUFLEN); 1012 } 1013 } 1014 1015 if (log.fd() != defaultStream::output_fd()) { 1016 close(log.fd()); 1017 } 1018 1019 log.set_fd(-1); 1020 log_done = true; 1021 } 1022 1023 1024 static bool skip_OnError = false; 1025 if (!skip_OnError && OnError && OnError[0]) { 1026 skip_OnError = true; 1027 1028 out.print_raw_cr("#"); 1029 out.print_raw ("# -XX:OnError=\""); 1030 out.print_raw (OnError); 1031 out.print_raw_cr("\""); 1032 1033 char* cmd; 1034 const char* ptr = OnError; 1035 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1036 out.print_raw ("# Executing "); 1037 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1038 out.print_raw ("/bin/sh -c "); 1039 #elif defined(SOLARIS) 1040 out.print_raw ("/usr/bin/sh -c "); 1041 #endif 1042 out.print_raw ("\""); 1043 out.print_raw (cmd); 1044 out.print_raw_cr("\" ..."); 1045 1046 os::fork_and_exec(cmd); 1047 } 1048 1049 // done with OnError 1050 OnError = NULL; 1051 } 1052 1053 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1054 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1055 skip_replay = true; 1056 ciEnv* env = ciEnv::current(); 1057 if (env != NULL) { 1058 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1059 if (fd != -1) { 1060 FILE* replay_data_file = os::open(fd, "w"); 1061 if (replay_data_file != NULL) { 1062 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1063 env->dump_replay_data_unsafe(&replay_data_stream); 1064 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1065 out.print_raw_cr(buffer); 1066 } else { 1067 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1068 out.print_raw_cr(strerror(os::get_last_error())); 1069 } 1070 } 1071 } 1072 } 1073 1074 static bool skip_bug_url = !should_report_bug(first_error->_id); 1075 if (!skip_bug_url) { 1076 skip_bug_url = true; 1077 1078 out.print_raw_cr("#"); 1079 print_bug_submit_message(&out, _thread); 1080 } 1081 1082 if (!UseOSErrorReporting) { 1083 // os::abort() will call abort hooks, try it first. 1084 static bool skip_os_abort = false; 1085 if (!skip_os_abort) { 1086 skip_os_abort = true; 1087 bool dump_core = should_report_bug(first_error->_id); 1088 os::abort(dump_core); 1089 } 1090 1091 // if os::abort() doesn't abort, try os::die(); 1092 os::die(); 1093 } 1094 } 1095 1096 /* 1097 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1098 * ensures utilities such as jmap can observe the process is a consistent state. 1099 */ 1100 class VM_ReportJavaOutOfMemory : public VM_Operation { 1101 private: 1102 VMError *_err; 1103 public: 1104 VM_ReportJavaOutOfMemory(VMError *err) { _err = err; } 1105 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1106 void doit(); 1107 }; 1108 1109 void VM_ReportJavaOutOfMemory::doit() { 1110 // Don't allocate large buffer on stack 1111 static char buffer[O_BUFLEN]; 1112 1113 tty->print_cr("#"); 1114 tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message()); 1115 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1116 1117 // make heap parsability 1118 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1119 1120 char* cmd; 1121 const char* ptr = OnOutOfMemoryError; 1122 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1123 tty->print("# Executing "); 1124 #if defined(LINUX) 1125 tty->print ("/bin/sh -c "); 1126 #elif defined(SOLARIS) 1127 tty->print ("/usr/bin/sh -c "); 1128 #endif 1129 tty->print_cr("\"%s\"...", cmd); 1130 1131 os::fork_and_exec(cmd); 1132 } 1133 } 1134 1135 void VMError::report_java_out_of_memory() { 1136 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1137 MutexLocker ml(Heap_lock); 1138 VM_ReportJavaOutOfMemory op(this); 1139 VMThread::execute(&op); 1140 } 1141 }