1 /* 2 * Copyright (c) 2003, 2017, 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 "compiler/disassembler.hpp" 30 #include "gc/shared/collectedHeap.hpp" 31 #include "logging/logConfiguration.hpp" 32 #include "prims/whitebox.hpp" 33 #include "runtime/arguments.hpp" 34 #include "runtime/atomic.hpp" 35 #include "runtime/frame.inline.hpp" 36 #include "runtime/init.hpp" 37 #include "runtime/os.hpp" 38 #include "runtime/thread.inline.hpp" 39 #include "runtime/vmThread.hpp" 40 #include "runtime/vm_operations.hpp" 41 #include "runtime/vm_version.hpp" 42 #include "services/memTracker.hpp" 43 #include "trace/traceMacros.hpp" 44 #include "utilities/debug.hpp" 45 #include "utilities/decoder.hpp" 46 #include "utilities/defaultStream.hpp" 47 #include "utilities/errorReporter.hpp" 48 #include "utilities/events.hpp" 49 #include "utilities/vmError.hpp" 50 51 // List of environment variables that should be reported in error log file. 52 const char *env_list[] = { 53 // All platforms 54 "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH", 55 "JAVA_COMPILER", "PATH", "USERNAME", 56 57 // Env variables that are defined on Solaris/Linux/BSD 58 "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY", 59 "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE", 60 61 // defined on Linux 62 "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM", 63 64 // defined on Darwin 65 "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH", 66 "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH", 67 "DYLD_INSERT_LIBRARIES", 68 69 // defined on Windows 70 "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR", 71 72 (const char *)0 73 }; 74 75 // A simple parser for -XX:OnError, usage: 76 // ptr = OnError; 77 // while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL) 78 // ... ... 79 static char* next_OnError_command(char* buf, int buflen, const char** ptr) { 80 if (ptr == NULL || *ptr == NULL) return NULL; 81 82 const char* cmd = *ptr; 83 84 // skip leading blanks or ';' 85 while (*cmd == ' ' || *cmd == ';') cmd++; 86 87 if (*cmd == '\0') return NULL; 88 89 const char * cmdend = cmd; 90 while (*cmdend != '\0' && *cmdend != ';') cmdend++; 91 92 Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen); 93 94 *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1); 95 return buf; 96 } 97 98 static void print_bug_submit_message(outputStream *out, Thread *thread) { 99 if (out == NULL) return; 100 out->print_raw_cr("# If you would like to submit a bug report, please visit:"); 101 out->print_raw ("# "); 102 out->print_raw_cr(Arguments::java_vendor_url_bug()); 103 // If the crash is in native code, encourage user to submit a bug to the 104 // provider of that code. 105 if (thread && thread->is_Java_thread() && 106 !thread->is_hidden_from_external_view()) { 107 JavaThread* jt = (JavaThread*)thread; 108 if (jt->thread_state() == _thread_in_native) { 109 out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug."); 110 } 111 } 112 out->print_raw_cr("#"); 113 } 114 115 bool VMError::coredump_status; 116 char VMError::coredump_message[O_BUFLEN]; 117 118 void VMError::record_coredump_status(const char* message, bool status) { 119 coredump_status = status; 120 strncpy(coredump_message, message, sizeof(coredump_message)); 121 coredump_message[sizeof(coredump_message)-1] = 0; 122 } 123 124 // Return a string to describe the error 125 char* VMError::error_string(char* buf, int buflen) { 126 char signame_buf[64]; 127 const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf)); 128 129 if (signame) { 130 jio_snprintf(buf, buflen, 131 "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT, 132 signame, _id, _pc, 133 os::current_process_id(), os::current_thread_id()); 134 } else if (_filename != NULL && _lineno > 0) { 135 // skip directory names 136 char separator = os::file_separator()[0]; 137 const char *p = strrchr(_filename, separator); 138 int n = jio_snprintf(buf, buflen, 139 "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT, 140 p ? p + 1 : _filename, _lineno, 141 os::current_process_id(), os::current_thread_id()); 142 if (n >= 0 && n < buflen && _message) { 143 if (strlen(_detail_msg) > 0) { 144 jio_snprintf(buf + n, buflen - n, "%s%s: %s", 145 os::line_separator(), _message, _detail_msg); 146 } else { 147 jio_snprintf(buf + n, buflen - n, "%sError: %s", 148 os::line_separator(), _message); 149 } 150 } 151 } else { 152 jio_snprintf(buf, buflen, 153 "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT, 154 _id, os::current_process_id(), os::current_thread_id()); 155 } 156 157 return buf; 158 } 159 160 void VMError::print_stack_trace(outputStream* st, JavaThread* jt, 161 char* buf, int buflen, bool verbose) { 162 #ifdef ZERO 163 if (jt->zero_stack()->sp() && jt->top_zero_frame()) { 164 // StackFrameStream uses the frame anchor, which may not have 165 // been set up. This can be done at any time in Zero, however, 166 // so if it hasn't been set up then we just set it up now and 167 // clear it again when we're done. 168 bool has_last_Java_frame = jt->has_last_Java_frame(); 169 if (!has_last_Java_frame) 170 jt->set_last_Java_frame(); 171 st->print("Java frames:"); 172 173 // If the top frame is a Shark frame and the frame anchor isn't 174 // set up then it's possible that the information in the frame 175 // is garbage: it could be from a previous decache, or it could 176 // simply have never been written. So we print a warning... 177 StackFrameStream sfs(jt); 178 if (!has_last_Java_frame && !sfs.is_done()) { 179 if (sfs.current()->zeroframe()->is_shark_frame()) { 180 st->print(" (TOP FRAME MAY BE JUNK)"); 181 } 182 } 183 st->cr(); 184 185 // Print the frames 186 for(int i = 0; !sfs.is_done(); sfs.next(), i++) { 187 sfs.current()->zero_print_on_error(i, st, buf, buflen); 188 st->cr(); 189 } 190 191 // Reset the frame anchor if necessary 192 if (!has_last_Java_frame) 193 jt->reset_last_Java_frame(); 194 } 195 #else 196 if (jt->has_last_Java_frame()) { 197 st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)"); 198 for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) { 199 sfs.current()->print_on_error(st, buf, buflen, verbose); 200 st->cr(); 201 } 202 } 203 #endif // ZERO 204 } 205 206 static void print_oom_reasons(outputStream* st) { 207 st->print_cr("# Possible reasons:"); 208 st->print_cr("# The system is out of physical RAM or swap space"); 209 if (UseCompressedOops) { 210 st->print_cr("# The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap"); 211 } 212 if (LogBytesPerWord == 2) { 213 st->print_cr("# In 32 bit mode, the process size limit was hit"); 214 } 215 st->print_cr("# Possible solutions:"); 216 st->print_cr("# Reduce memory load on the system"); 217 st->print_cr("# Increase physical memory or swap space"); 218 st->print_cr("# Check if swap backing store is full"); 219 if (LogBytesPerWord == 2) { 220 st->print_cr("# Use 64 bit Java on a 64 bit OS"); 221 } 222 st->print_cr("# Decrease Java heap size (-Xmx/-Xms)"); 223 st->print_cr("# Decrease number of Java threads"); 224 st->print_cr("# Decrease Java thread stack sizes (-Xss)"); 225 st->print_cr("# Set larger code cache with -XX:ReservedCodeCacheSize="); 226 if (UseCompressedOops) { 227 switch (Universe::narrow_oop_mode()) { 228 case Universe::UnscaledNarrowOop: 229 st->print_cr("# JVM is running with Unscaled Compressed Oops mode in which the Java heap is"); 230 st->print_cr("# placed in the first 4GB address space. The Java Heap base address is the"); 231 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress"); 232 st->print_cr("# to set the Java Heap base and to place the Java Heap above 4GB virtual address."); 233 break; 234 case Universe::ZeroBasedNarrowOop: 235 st->print_cr("# JVM is running with Zero Based Compressed Oops mode in which the Java heap is"); 236 st->print_cr("# placed in the first 32GB address space. The Java Heap base address is the"); 237 st->print_cr("# maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress"); 238 st->print_cr("# to set the Java Heap base and to place the Java Heap above 32GB virtual address."); 239 break; 240 } 241 } 242 st->print_cr("# This output file may be truncated or incomplete."); 243 } 244 245 static const char* gc_mode() { 246 if (UseG1GC) return "g1 gc"; 247 if (UseParallelGC) return "parallel gc"; 248 if (UseConcMarkSweepGC) return "concurrent mark sweep gc"; 249 if (UseSerialGC) return "serial gc"; 250 return "ERROR in GC mode"; 251 } 252 253 static void report_vm_version(outputStream* st, char* buf, int buflen) { 254 // VM version 255 st->print_cr("#"); 256 JDK_Version::current().to_string(buf, buflen); 257 const char* runtime_name = JDK_Version::runtime_name() != NULL ? 258 JDK_Version::runtime_name() : ""; 259 const char* runtime_version = JDK_Version::runtime_version() != NULL ? 260 JDK_Version::runtime_version() : ""; 261 const char* jdk_debug_level = Abstract_VM_Version::printable_jdk_debug_level() != NULL ? 262 Abstract_VM_Version::printable_jdk_debug_level() : ""; 263 264 st->print_cr("# JRE version: %s (%s) (%sbuild %s)", runtime_name, buf, 265 jdk_debug_level, runtime_version); 266 267 // This is the long version with some default settings added 268 st->print_cr("# Java VM: %s (%s%s, %s%s%s%s%s, %s, %s)", 269 Abstract_VM_Version::vm_name(), 270 jdk_debug_level, 271 Abstract_VM_Version::vm_release(), 272 Abstract_VM_Version::vm_info_string(), 273 TieredCompilation ? ", tiered" : "", 274 #if INCLUDE_JVMCI 275 EnableJVMCI ? ", jvmci" : "", 276 UseJVMCICompiler ? ", jvmci compiler" : "", 277 #else 278 "", "", 279 #endif 280 UseCompressedOops ? ", compressed oops" : "", 281 gc_mode(), 282 Abstract_VM_Version::vm_platform_string() 283 ); 284 } 285 286 // This is the main function to report a fatal error. Only one thread can 287 // call this function, so we don't need to worry about MT-safety. But it's 288 // possible that the error handler itself may crash or die on an internal 289 // error, for example, when the stack/heap is badly damaged. We must be 290 // able to handle recursive errors that happen inside error handler. 291 // 292 // Error reporting is done in several steps. If a crash or internal error 293 // occurred when reporting an error, the nested signal/exception handler 294 // can skip steps that are already (or partially) done. Error reporting will 295 // continue from the next step. This allows us to retrieve and print 296 // information that may be unsafe to get after a fatal error. If it happens, 297 // you may find nested report_and_die() frames when you look at the stack 298 // in a debugger. 299 // 300 // In general, a hang in error handler is much worse than a crash or internal 301 // error, as it's harder to recover from a hang. Deadlock can happen if we 302 // try to grab a lock that is already owned by current thread, or if the 303 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the 304 // error handler and all the functions it called should avoid grabbing any 305 // lock. An important thing to notice is that memory allocation needs a lock. 306 // 307 // We should avoid using large stack allocated buffers. Many errors happen 308 // when stack space is already low. Making things even worse is that there 309 // could be nested report_and_die() calls on stack (see above). Only one 310 // thread can report error, so large buffers are statically allocated in data 311 // segment. 312 313 int VMError::_current_step; 314 const char* VMError::_current_step_info; 315 316 volatile jlong VMError::_reporting_start_time = -1; 317 volatile bool VMError::_reporting_did_timeout = false; 318 volatile jlong VMError::_step_start_time = -1; 319 volatile bool VMError::_step_did_timeout = false; 320 321 // Helper, return current timestamp for timeout handling. 322 jlong VMError::get_current_timestamp() { 323 return os::javaTimeNanos(); 324 } 325 // Factor to translate the timestamp to seconds. 326 #define TIMESTAMP_TO_SECONDS_FACTOR (1000 * 1000 * 1000) 327 328 void VMError::record_reporting_start_time() { 329 const jlong now = get_current_timestamp(); 330 Atomic::store(now, &_reporting_start_time); 331 } 332 333 jlong VMError::get_reporting_start_time() { 334 return Atomic::load(&_reporting_start_time); 335 } 336 337 void VMError::record_step_start_time() { 338 const jlong now = get_current_timestamp(); 339 Atomic::store(now, &_step_start_time); 340 } 341 342 jlong VMError::get_step_start_time() { 343 return Atomic::load(&_step_start_time); 344 } 345 346 void VMError::report(outputStream* st, bool _verbose) { 347 348 # define BEGIN if (_current_step == 0) { _current_step = __LINE__; 349 # define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s; \ 350 record_step_start_time(); _step_did_timeout = false; 351 # define END } 352 353 // don't allocate large buffer on stack 354 static char buf[O_BUFLEN]; 355 356 BEGIN 357 358 STEP("printing fatal error message") 359 360 st->print_cr("#"); 361 if (should_report_bug(_id)) { 362 st->print_cr("# A fatal error has been detected by the Java Runtime Environment:"); 363 } else { 364 st->print_cr("# There is insufficient memory for the Java " 365 "Runtime Environment to continue."); 366 } 367 368 #ifndef PRODUCT 369 // Error handler self tests 370 371 // test secondary error handling. Test it twice, to test that resetting 372 // error handler after a secondary crash works. 373 STEP("test secondary crash 1") 374 if (_verbose && TestCrashInErrorHandler != 0) { 375 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...", 376 TestCrashInErrorHandler); 377 controlled_crash(TestCrashInErrorHandler); 378 } 379 380 STEP("test secondary crash 2") 381 if (_verbose && TestCrashInErrorHandler != 0) { 382 st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...", 383 TestCrashInErrorHandler); 384 controlled_crash(TestCrashInErrorHandler); 385 } 386 387 // TestUnresponsiveErrorHandler: We want to test both step timeouts and global timeout. 388 // Step to global timeout ratio is 4:1, so in order to be absolutely sure we hit the 389 // global timeout, let's execute the timeout step five times. 390 // See corresponding test in test/runtime/ErrorHandling/TimeoutInErrorHandlingTest.java 391 #define TIMEOUT_TEST_STEP STEP("test unresponsive error reporting step") \ 392 if (_verbose && TestUnresponsiveErrorHandler) { os::infinite_sleep(); } 393 TIMEOUT_TEST_STEP 394 TIMEOUT_TEST_STEP 395 TIMEOUT_TEST_STEP 396 TIMEOUT_TEST_STEP 397 TIMEOUT_TEST_STEP 398 399 STEP("test safefetch in error handler") 400 // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice 401 // to test that resetting the signal handler works correctly. 402 if (_verbose && TestSafeFetchInErrorHandler) { 403 st->print_cr("Will test SafeFetch..."); 404 if (CanUseSafeFetch32()) { 405 int* const invalid_pointer = (int*) get_segfault_address(); 406 const int x = 0x76543210; 407 int i1 = SafeFetch32(invalid_pointer, x); 408 int i2 = SafeFetch32(invalid_pointer, x); 409 if (i1 == x && i2 == x) { 410 st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern 411 } else { 412 st->print_cr("??"); 413 } 414 } else { 415 st->print_cr("not possible; skipped."); 416 } 417 } 418 #endif // PRODUCT 419 420 STEP("printing type of error") 421 422 switch(_id) { 423 case OOM_MALLOC_ERROR: 424 case OOM_MMAP_ERROR: 425 if (_size) { 426 st->print("# Native memory allocation "); 427 st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " : 428 "(mmap) failed to map "); 429 jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size); 430 st->print("%s", buf); 431 st->print(" bytes"); 432 if (strlen(_detail_msg) > 0) { 433 st->print(" for "); 434 st->print("%s", _detail_msg); 435 } 436 st->cr(); 437 } else { 438 if (strlen(_detail_msg) > 0) { 439 st->print("# "); 440 st->print_cr("%s", _detail_msg); 441 } 442 } 443 // In error file give some solutions 444 if (_verbose) { 445 print_oom_reasons(st); 446 } else { 447 return; // that's enough for the screen 448 } 449 break; 450 case INTERNAL_ERROR: 451 default: 452 break; 453 } 454 455 STEP("printing exception/signal name") 456 457 st->print_cr("#"); 458 st->print("# "); 459 // Is it an OS exception/signal? 460 if (os::exception_name(_id, buf, sizeof(buf))) { 461 st->print("%s", buf); 462 st->print(" (0x%x)", _id); // signal number 463 st->print(" at pc=" PTR_FORMAT, p2i(_pc)); 464 } else { 465 if (should_report_bug(_id)) { 466 st->print("Internal Error"); 467 } else { 468 st->print("Out of Memory Error"); 469 } 470 if (_filename != NULL && _lineno > 0) { 471 #ifdef PRODUCT 472 // In product mode chop off pathname? 473 char separator = os::file_separator()[0]; 474 const char *p = strrchr(_filename, separator); 475 const char *file = p ? p+1 : _filename; 476 #else 477 const char *file = _filename; 478 #endif 479 st->print(" (%s:%d)", file, _lineno); 480 } else { 481 st->print(" (0x%x)", _id); 482 } 483 } 484 485 STEP("printing current thread and pid") 486 487 // process id, thread id 488 st->print(", pid=%d", os::current_process_id()); 489 st->print(", tid=" UINTX_FORMAT, os::current_thread_id()); 490 st->cr(); 491 492 STEP("printing error message") 493 494 if (should_report_bug(_id)) { // already printed the message. 495 // error message 496 if (strlen(_detail_msg) > 0) { 497 st->print_cr("# %s: %s", _message ? _message : "Error", _detail_msg); 498 } else if (_message) { 499 st->print_cr("# Error: %s", _message); 500 } 501 } 502 503 STEP("printing Java version string") 504 505 report_vm_version(st, buf, sizeof(buf)); 506 507 STEP("printing problematic frame") 508 509 // Print current frame if we have a context (i.e. it's a crash) 510 if (_context) { 511 st->print_cr("# Problematic frame:"); 512 st->print("# "); 513 frame fr = os::fetch_frame_from_context(_context); 514 fr.print_on_error(st, buf, sizeof(buf)); 515 st->cr(); 516 st->print_cr("#"); 517 } 518 519 STEP("printing core file information") 520 st->print("# "); 521 if (CreateCoredumpOnCrash) { 522 if (coredump_status) { 523 st->print("Core dump will be written. Default location: %s", coredump_message); 524 } else { 525 st->print("No core dump will be written. %s", coredump_message); 526 } 527 } else { 528 st->print("CreateCoredumpOnCrash turned off, no core file dumped"); 529 } 530 st->cr(); 531 st->print_cr("#"); 532 533 STEP("printing bug submit message") 534 535 if (should_report_bug(_id) && _verbose) { 536 print_bug_submit_message(st, _thread); 537 } 538 539 STEP("printing summary") 540 541 if (_verbose) { 542 st->cr(); 543 st->print_cr("--------------- S U M M A R Y ------------"); 544 st->cr(); 545 } 546 547 STEP("printing VM option summary") 548 549 if (_verbose) { 550 // VM options 551 Arguments::print_summary_on(st); 552 st->cr(); 553 } 554 555 STEP("printing summary machine and OS info") 556 557 if (_verbose) { 558 os::print_summary_info(st, buf, sizeof(buf)); 559 } 560 561 562 STEP("printing date and time") 563 564 if (_verbose) { 565 os::print_date_and_time(st, buf, sizeof(buf)); 566 } 567 568 STEP("printing thread") 569 570 if (_verbose) { 571 st->cr(); 572 st->print_cr("--------------- T H R E A D ---------------"); 573 st->cr(); 574 } 575 576 STEP("printing current thread") 577 578 // current thread 579 if (_verbose) { 580 if (_thread) { 581 st->print("Current thread (" PTR_FORMAT "): ", p2i(_thread)); 582 _thread->print_on_error(st, buf, sizeof(buf)); 583 st->cr(); 584 } else { 585 st->print_cr("Current thread is native thread"); 586 } 587 st->cr(); 588 } 589 590 STEP("printing current compile task") 591 592 if (_verbose && _thread && _thread->is_Compiler_thread()) { 593 CompilerThread* t = (CompilerThread*)_thread; 594 if (t->task()) { 595 st->cr(); 596 st->print_cr("Current CompileTask:"); 597 t->task()->print_line_on_error(st, buf, sizeof(buf)); 598 st->cr(); 599 } 600 } 601 602 603 STEP("printing stack bounds") 604 605 if (_verbose) { 606 st->print("Stack: "); 607 608 address stack_top; 609 size_t stack_size; 610 611 if (_thread) { 612 stack_top = _thread->stack_base(); 613 stack_size = _thread->stack_size(); 614 } else { 615 stack_top = os::current_stack_base(); 616 stack_size = os::current_stack_size(); 617 } 618 619 address stack_bottom = stack_top - stack_size; 620 st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top)); 621 622 frame fr = _context ? os::fetch_frame_from_context(_context) 623 : os::current_frame(); 624 625 if (fr.sp()) { 626 st->print(", sp=" PTR_FORMAT, p2i(fr.sp())); 627 size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024); 628 st->print(", free space=" SIZE_FORMAT "k", free_stack_size); 629 } 630 631 st->cr(); 632 } 633 634 STEP("printing native stack") 635 636 if (_verbose) { 637 if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) { 638 // We have printed the native stack in platform-specific code 639 // Windows/x64 needs special handling. 640 } else { 641 frame fr = _context ? os::fetch_frame_from_context(_context) 642 : os::current_frame(); 643 644 print_native_stack(st, fr, _thread, buf, sizeof(buf)); 645 } 646 } 647 648 STEP("printing Java stack") 649 650 if (_verbose && _thread && _thread->is_Java_thread()) { 651 print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf)); 652 } 653 654 STEP("printing target Java thread stack") 655 656 // printing Java thread stack trace if it is involved in GC crash 657 if (_verbose && _thread && (_thread->is_Named_thread())) { 658 JavaThread* jt = ((NamedThread *)_thread)->processed_thread(); 659 if (jt != NULL) { 660 st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id()); 661 print_stack_trace(st, jt, buf, sizeof(buf), true); 662 } 663 } 664 665 STEP("printing siginfo") 666 667 // signal no, signal code, address that caused the fault 668 if (_verbose && _siginfo) { 669 st->cr(); 670 os::print_siginfo(st, _siginfo); 671 st->cr(); 672 } 673 674 STEP("CDS archive access warning") 675 676 // Print an explicit hint if we crashed on access to the CDS archive. 677 if (_verbose && _siginfo) { 678 check_failing_cds_access(st, _siginfo); 679 st->cr(); 680 } 681 682 STEP("printing register info") 683 684 // decode register contents if possible 685 if (_verbose && _context && Universe::is_fully_initialized()) { 686 os::print_register_info(st, _context); 687 st->cr(); 688 } 689 690 STEP("printing registers, top of stack, instructions near pc") 691 692 // registers, top of stack, instructions near pc 693 if (_verbose && _context) { 694 os::print_context(st, _context); 695 st->cr(); 696 } 697 698 STEP("printing code blob if possible") 699 700 if (_verbose && _context) { 701 CodeBlob* cb = CodeCache::find_blob(_pc); 702 if (cb != NULL) { 703 if (Interpreter::contains(_pc)) { 704 // The interpreter CodeBlob is very large so try to print the codelet instead. 705 InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc); 706 if (codelet != NULL) { 707 codelet->print_on(st); 708 Disassembler::decode(codelet->code_begin(), codelet->code_end(), st); 709 } 710 } else { 711 StubCodeDesc* desc = StubCodeDesc::desc_for(_pc); 712 if (desc != NULL) { 713 desc->print_on(st); 714 Disassembler::decode(desc->begin(), desc->end(), st); 715 } else { 716 Disassembler::decode(cb, st); 717 st->cr(); 718 } 719 } 720 } 721 } 722 723 STEP("printing VM operation") 724 725 if (_verbose && _thread && _thread->is_VM_thread()) { 726 VMThread* t = (VMThread*)_thread; 727 VM_Operation* op = t->vm_operation(); 728 if (op) { 729 op->print_on_error(st); 730 st->cr(); 731 st->cr(); 732 } 733 } 734 735 STEP("printing process") 736 737 if (_verbose) { 738 st->cr(); 739 st->print_cr("--------------- P R O C E S S ---------------"); 740 st->cr(); 741 } 742 743 STEP("printing all threads") 744 745 // all threads 746 if (_verbose && _thread) { 747 Threads::print_on_error(st, _thread, buf, sizeof(buf)); 748 st->cr(); 749 } 750 751 STEP("printing VM state") 752 753 if (_verbose) { 754 // Safepoint state 755 st->print("VM state:"); 756 757 if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing"); 758 else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint"); 759 else st->print("not at safepoint"); 760 761 // Also see if error occurred during initialization or shutdown 762 if (!Universe::is_fully_initialized()) { 763 st->print(" (not fully initialized)"); 764 } else if (VM_Exit::vm_exited()) { 765 st->print(" (shutting down)"); 766 } else { 767 st->print(" (normal execution)"); 768 } 769 st->cr(); 770 st->cr(); 771 } 772 773 STEP("printing owned locks on error") 774 775 // mutexes/monitors that currently have an owner 776 if (_verbose) { 777 print_owned_locks_on_error(st); 778 st->cr(); 779 } 780 781 STEP("printing number of OutOfMemoryError and StackOverflow exceptions") 782 783 if (_verbose && Exceptions::has_exception_counts()) { 784 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 785 Exceptions::print_exception_counts_on_error(st); 786 st->cr(); 787 } 788 789 STEP("printing compressed oops mode") 790 791 if (_verbose && UseCompressedOops) { 792 Universe::print_compressed_oops_mode(st); 793 if (UseCompressedClassPointers) { 794 Metaspace::print_compressed_class_space(st); 795 } 796 st->cr(); 797 } 798 799 STEP("printing heap information") 800 801 if (_verbose && Universe::is_fully_initialized()) { 802 Universe::heap()->print_on_error(st); 803 st->cr(); 804 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 805 st->cr(); 806 } 807 808 STEP("printing code cache information") 809 810 if (_verbose && Universe::is_fully_initialized()) { 811 // print code cache information before vm abort 812 CodeCache::print_summary(st); 813 st->cr(); 814 } 815 816 STEP("printing ring buffers") 817 818 if (_verbose) { 819 Events::print_all(st); 820 st->cr(); 821 } 822 823 STEP("printing dynamic libraries") 824 825 if (_verbose) { 826 // dynamic libraries, or memory map 827 os::print_dll_info(st); 828 st->cr(); 829 } 830 831 STEP("printing VM options") 832 833 if (_verbose) { 834 // VM options 835 Arguments::print_on(st); 836 st->cr(); 837 } 838 839 STEP("printing warning if internal testing API used") 840 841 if (WhiteBox::used()) { 842 st->print_cr("Unsupported internal testing APIs have been used."); 843 st->cr(); 844 } 845 846 STEP("printing log configuration") 847 if (_verbose){ 848 st->print_cr("Logging:"); 849 LogConfiguration::describe_current_configuration(st); 850 st->cr(); 851 } 852 853 STEP("printing all environment variables") 854 855 if (_verbose) { 856 os::print_environment_variables(st, env_list); 857 st->cr(); 858 } 859 860 STEP("printing signal handlers") 861 862 if (_verbose) { 863 os::print_signal_handlers(st, buf, sizeof(buf)); 864 st->cr(); 865 } 866 867 STEP("Native Memory Tracking") 868 if (_verbose) { 869 MemTracker::error_report(st); 870 } 871 872 STEP("printing system") 873 874 if (_verbose) { 875 st->cr(); 876 st->print_cr("--------------- S Y S T E M ---------------"); 877 st->cr(); 878 } 879 880 STEP("printing OS information") 881 882 if (_verbose) { 883 os::print_os_info(st); 884 st->cr(); 885 } 886 887 STEP("printing CPU info") 888 if (_verbose) { 889 os::print_cpu_info(st, buf, sizeof(buf)); 890 st->cr(); 891 } 892 893 STEP("printing memory info") 894 895 if (_verbose) { 896 os::print_memory_info(st); 897 st->cr(); 898 } 899 900 STEP("printing internal vm info") 901 902 if (_verbose) { 903 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 904 st->cr(); 905 } 906 907 // print a defined marker to show that error handling finished correctly. 908 STEP("printing end marker") 909 910 if (_verbose) { 911 st->print_cr("END."); 912 } 913 914 END 915 916 # undef BEGIN 917 # undef STEP 918 # undef END 919 } 920 921 // Report for the vm_info_cmd. This prints out the information above omitting 922 // crash and thread specific information. If output is added above, it should be added 923 // here also, if it is safe to call during a running process. 924 void VMError::print_vm_info(outputStream* st) { 925 926 char buf[O_BUFLEN]; 927 report_vm_version(st, buf, sizeof(buf)); 928 929 // STEP("printing summary") 930 931 st->cr(); 932 st->print_cr("--------------- S U M M A R Y ------------"); 933 st->cr(); 934 935 // STEP("printing VM option summary") 936 937 // VM options 938 Arguments::print_summary_on(st); 939 st->cr(); 940 941 // STEP("printing summary machine and OS info") 942 943 os::print_summary_info(st, buf, sizeof(buf)); 944 945 // STEP("printing date and time") 946 947 os::print_date_and_time(st, buf, sizeof(buf)); 948 949 // Skip: STEP("printing thread") 950 951 // STEP("printing process") 952 953 st->cr(); 954 st->print_cr("--------------- P R O C E S S ---------------"); 955 st->cr(); 956 957 // STEP("printing number of OutOfMemoryError and StackOverflow exceptions") 958 959 if (Exceptions::has_exception_counts()) { 960 st->print_cr("OutOfMemory and StackOverflow Exception counts:"); 961 Exceptions::print_exception_counts_on_error(st); 962 st->cr(); 963 } 964 965 // STEP("printing compressed oops mode") 966 967 if (UseCompressedOops) { 968 Universe::print_compressed_oops_mode(st); 969 if (UseCompressedClassPointers) { 970 Metaspace::print_compressed_class_space(st); 971 } 972 st->cr(); 973 } 974 975 // STEP("printing heap information") 976 977 if (Universe::is_fully_initialized()) { 978 MutexLocker hl(Heap_lock); 979 Universe::heap()->print_on_error(st); 980 st->cr(); 981 st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page())); 982 st->cr(); 983 } 984 985 // STEP("printing code cache information") 986 987 if (Universe::is_fully_initialized()) { 988 // print code cache information before vm abort 989 CodeCache::print_summary(st); 990 st->cr(); 991 } 992 993 // STEP("printing ring buffers") 994 995 Events::print_all(st); 996 st->cr(); 997 998 // STEP("printing dynamic libraries") 999 1000 // dynamic libraries, or memory map 1001 os::print_dll_info(st); 1002 st->cr(); 1003 1004 // STEP("printing VM options") 1005 1006 // VM options 1007 Arguments::print_on(st); 1008 st->cr(); 1009 1010 // STEP("printing warning if internal testing API used") 1011 1012 if (WhiteBox::used()) { 1013 st->print_cr("Unsupported internal testing APIs have been used."); 1014 st->cr(); 1015 } 1016 1017 // STEP("printing log configuration") 1018 st->print_cr("Logging:"); 1019 LogConfiguration::describe(st); 1020 st->cr(); 1021 1022 // STEP("printing all environment variables") 1023 1024 os::print_environment_variables(st, env_list); 1025 st->cr(); 1026 1027 // STEP("printing signal handlers") 1028 1029 os::print_signal_handlers(st, buf, sizeof(buf)); 1030 st->cr(); 1031 1032 // STEP("Native Memory Tracking") 1033 1034 MemTracker::error_report(st); 1035 1036 // STEP("printing system") 1037 1038 st->cr(); 1039 st->print_cr("--------------- S Y S T E M ---------------"); 1040 st->cr(); 1041 1042 // STEP("printing OS information") 1043 1044 os::print_os_info(st); 1045 st->cr(); 1046 1047 // STEP("printing CPU info") 1048 1049 os::print_cpu_info(st, buf, sizeof(buf)); 1050 st->cr(); 1051 1052 // STEP("printing memory info") 1053 1054 os::print_memory_info(st); 1055 st->cr(); 1056 1057 // STEP("printing internal vm info") 1058 1059 st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string()); 1060 st->cr(); 1061 1062 // print a defined marker to show that error handling finished correctly. 1063 // STEP("printing end marker") 1064 1065 st->print_cr("END."); 1066 } 1067 1068 volatile intptr_t VMError::first_error_tid = -1; 1069 1070 // An error could happen before tty is initialized or after it has been 1071 // destroyed. 1072 // Please note: to prevent large stack allocations, the log- and 1073 // output-stream use a global scratch buffer for format printing. 1074 // (see VmError::report_and_die(). Access to those streams is synchronized 1075 // in VmError::report_and_die() - there is only one reporting thread at 1076 // any given time. 1077 fdStream VMError::out(defaultStream::output_fd()); 1078 fdStream VMError::log; // error log used by VMError::report_and_die() 1079 1080 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */ 1081 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) { 1082 int fd = -1; 1083 if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) { 1084 // the O_EXCL flag will cause the open to fail if the file exists 1085 fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666); 1086 } 1087 return fd; 1088 } 1089 1090 /** 1091 * Construct file name for a log file and return it's file descriptor. 1092 * Name and location depends on pattern, default_pattern params and access 1093 * permissions. 1094 */ 1095 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) { 1096 int fd = -1; 1097 1098 // If possible, use specified pattern to construct log file name 1099 if (pattern != NULL) { 1100 fd = expand_and_open(pattern, buf, buflen, 0); 1101 } 1102 1103 // Either user didn't specify, or the user's location failed, 1104 // so use the default name in the current directory 1105 if (fd == -1) { 1106 const char* cwd = os::get_current_directory(buf, buflen); 1107 if (cwd != NULL) { 1108 size_t pos = strlen(cwd); 1109 int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator()); 1110 pos += fsep_len; 1111 if (fsep_len > 0) { 1112 fd = expand_and_open(default_pattern, buf, buflen, pos); 1113 } 1114 } 1115 } 1116 1117 // try temp directory if it exists. 1118 if (fd == -1) { 1119 const char* tmpdir = os::get_temp_directory(); 1120 if (tmpdir != NULL && strlen(tmpdir) > 0) { 1121 int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator()); 1122 if (pos > 0) { 1123 fd = expand_and_open(default_pattern, buf, buflen, pos); 1124 } 1125 } 1126 } 1127 1128 return fd; 1129 } 1130 1131 int VMError::_id; 1132 const char* VMError::_message; 1133 char VMError::_detail_msg[1024]; 1134 Thread* VMError::_thread; 1135 address VMError::_pc; 1136 void* VMError::_siginfo; 1137 void* VMError::_context; 1138 const char* VMError::_filename; 1139 int VMError::_lineno; 1140 size_t VMError::_size; 1141 1142 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, 1143 void* context, const char* detail_fmt, ...) 1144 { 1145 va_list detail_args; 1146 va_start(detail_args, detail_fmt); 1147 report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0); 1148 va_end(detail_args); 1149 } 1150 1151 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) 1152 { 1153 report_and_die(thread, sig, pc, siginfo, context, "%s", ""); 1154 } 1155 1156 void VMError::report_and_die(const char* message, const char* detail_fmt, ...) 1157 { 1158 va_list detail_args; 1159 va_start(detail_args, detail_fmt); 1160 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0); 1161 va_end(detail_args); 1162 } 1163 1164 void VMError::report_and_die(const char* message) 1165 { 1166 report_and_die(message, "%s", ""); 1167 } 1168 1169 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message, 1170 const char* detail_fmt, va_list detail_args) 1171 { 1172 report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0); 1173 } 1174 1175 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size, 1176 VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) { 1177 report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size); 1178 } 1179 1180 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args, 1181 Thread* thread, address pc, void* siginfo, void* context, const char* filename, 1182 int lineno, size_t size) 1183 { 1184 // Don't allocate large buffer on stack 1185 static char buffer[O_BUFLEN]; 1186 out.set_scratch_buffer(buffer, sizeof(buffer)); 1187 log.set_scratch_buffer(buffer, sizeof(buffer)); 1188 1189 // How many errors occurred in error handler when reporting first_error. 1190 static int recursive_error_count; 1191 1192 // We will first print a brief message to standard out (verbose = false), 1193 // then save detailed information in log file (verbose = true). 1194 static bool out_done = false; // done printing to standard out 1195 static bool log_done = false; // done saving error log 1196 static bool transmit_report_done = false; // done error reporting 1197 1198 if (SuppressFatalErrorMessage) { 1199 os::abort(CreateCoredumpOnCrash); 1200 } 1201 intptr_t mytid = os::current_thread_id(); 1202 if (first_error_tid == -1 && 1203 Atomic::cmpxchg_ptr(mytid, &first_error_tid, -1) == -1) { 1204 1205 // Initialize time stamps to use the same base. 1206 out.time_stamp().update_to(1); 1207 log.time_stamp().update_to(1); 1208 1209 _id = id; 1210 _message = message; 1211 _thread = thread; 1212 _pc = pc; 1213 _siginfo = siginfo; 1214 _context = context; 1215 _filename = filename; 1216 _lineno = lineno; 1217 _size = size; 1218 jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args); 1219 1220 // first time 1221 set_error_reported(); 1222 1223 reporting_started(); 1224 record_reporting_start_time(); 1225 1226 if (ShowMessageBoxOnError || PauseAtExit) { 1227 show_message_box(buffer, sizeof(buffer)); 1228 1229 // User has asked JVM to abort. Reset ShowMessageBoxOnError so the 1230 // WatcherThread can kill JVM if the error handler hangs. 1231 ShowMessageBoxOnError = false; 1232 } 1233 1234 os::check_dump_limit(buffer, sizeof(buffer)); 1235 1236 // reset signal handlers or exception filter; make sure recursive crashes 1237 // are handled properly. 1238 reset_signal_handlers(); 1239 1240 TRACE_VM_ERROR(); 1241 1242 } else { 1243 // If UseOsErrorReporting we call this for each level of the call stack 1244 // while searching for the exception handler. Only the first level needs 1245 // to be reported. 1246 if (UseOSErrorReporting && log_done) return; 1247 1248 // This is not the first error, see if it happened in a different thread 1249 // or in the same thread during error reporting. 1250 if (first_error_tid != mytid) { 1251 char msgbuf[64]; 1252 jio_snprintf(msgbuf, sizeof(msgbuf), 1253 "[thread " INTX_FORMAT " also had an error]", 1254 mytid); 1255 out.print_raw_cr(msgbuf); 1256 1257 // error reporting is not MT-safe, block current thread 1258 os::infinite_sleep(); 1259 1260 } else { 1261 if (recursive_error_count++ > 30) { 1262 out.print_raw_cr("[Too many errors, abort]"); 1263 os::die(); 1264 } 1265 1266 outputStream* const st = log.is_open() ? &log : &out; 1267 st->cr(); 1268 1269 // Timeout handling. 1270 if (_step_did_timeout) { 1271 // The current step had a timeout. Lets continue reporting with the next step. 1272 st->print_raw("[timeout occurred during error reporting in step \""); 1273 st->print_raw(_current_step_info); 1274 st->print_cr("\"] after " INT64_FORMAT " s.", 1275 (get_current_timestamp() - _step_start_time) / TIMESTAMP_TO_SECONDS_FACTOR); 1276 } else if (_reporting_did_timeout) { 1277 // We hit ErrorLogTimeout. Reporting will stop altogether. Let's wrap things 1278 // up, the process is about to be stopped by the WatcherThread. 1279 st->print_cr("------ Timeout during error reporting after " INT64_FORMAT " s. ------", 1280 (get_current_timestamp() - _reporting_start_time) / TIMESTAMP_TO_SECONDS_FACTOR); 1281 st->flush(); 1282 // Watcherthread is about to call os::die. Lets just wait. 1283 os::infinite_sleep(); 1284 } else { 1285 // Crash or assert during error reporting. Lets continue reporting with the next step. 1286 jio_snprintf(buffer, sizeof(buffer), 1287 "[error occurred during error reporting (%s), id 0x%x]", 1288 _current_step_info, _id); 1289 st->print_raw_cr(buffer); 1290 st->cr(); 1291 } 1292 } 1293 } 1294 1295 // print to screen 1296 if (!out_done) { 1297 report(&out, false); 1298 1299 out_done = true; 1300 1301 _current_step = 0; 1302 _current_step_info = ""; 1303 } 1304 1305 // print to error log file 1306 if (!log_done) { 1307 // see if log file is already open 1308 if (!log.is_open()) { 1309 // open log file 1310 int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer)); 1311 if (fd != -1) { 1312 out.print_raw("# An error report file with more information is saved as:\n# "); 1313 out.print_raw_cr(buffer); 1314 1315 log.set_fd(fd); 1316 } else { 1317 out.print_raw_cr("# Can not save log file, dump to screen.."); 1318 log.set_fd(defaultStream::output_fd()); 1319 /* Error reporting currently needs dumpfile. 1320 * Maybe implement direct streaming in the future.*/ 1321 transmit_report_done = true; 1322 } 1323 } 1324 1325 report(&log, true); 1326 log_done = true; 1327 _current_step = 0; 1328 _current_step_info = ""; 1329 1330 // Run error reporting to determine whether or not to report the crash. 1331 if (!transmit_report_done && should_report_bug(_id)) { 1332 transmit_report_done = true; 1333 const int fd2 = ::dup(log.fd()); 1334 if (fd2 != -1) { 1335 FILE* const hs_err = ::fdopen(fd2, "r"); 1336 if (NULL != hs_err) { 1337 ErrorReporter er; 1338 er.call(hs_err, buffer, O_BUFLEN); 1339 ::fclose(hs_err); 1340 } 1341 } 1342 } 1343 1344 if (log.fd() != defaultStream::output_fd()) { 1345 close(log.fd()); 1346 } 1347 1348 log.set_fd(-1); 1349 } 1350 1351 static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay 1352 if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) { 1353 skip_replay = true; 1354 ciEnv* env = ciEnv::current(); 1355 if (env != NULL) { 1356 int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer)); 1357 if (fd != -1) { 1358 FILE* replay_data_file = os::open(fd, "w"); 1359 if (replay_data_file != NULL) { 1360 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1361 env->dump_replay_data_unsafe(&replay_data_stream); 1362 out.print_raw("#\n# Compiler replay data is saved as:\n# "); 1363 out.print_raw_cr(buffer); 1364 } else { 1365 int e = errno; 1366 out.print_raw("#\n# Can't open file to dump replay data. Error: "); 1367 out.print_raw_cr(os::strerror(e)); 1368 } 1369 } 1370 } 1371 } 1372 1373 static bool skip_bug_url = !should_report_bug(_id); 1374 if (!skip_bug_url) { 1375 skip_bug_url = true; 1376 1377 out.print_raw_cr("#"); 1378 print_bug_submit_message(&out, _thread); 1379 } 1380 1381 static bool skip_OnError = false; 1382 if (!skip_OnError && OnError && OnError[0]) { 1383 skip_OnError = true; 1384 1385 // Flush output and finish logs before running OnError commands. 1386 ostream_abort(); 1387 1388 out.print_raw_cr("#"); 1389 out.print_raw ("# -XX:OnError=\""); 1390 out.print_raw (OnError); 1391 out.print_raw_cr("\""); 1392 1393 char* cmd; 1394 const char* ptr = OnError; 1395 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1396 out.print_raw ("# Executing "); 1397 #if defined(LINUX) || defined(_ALLBSD_SOURCE) 1398 out.print_raw ("/bin/sh -c "); 1399 #elif defined(SOLARIS) 1400 out.print_raw ("/usr/bin/sh -c "); 1401 #elif defined(WINDOWS) 1402 out.print_raw ("cmd /C "); 1403 #endif 1404 out.print_raw ("\""); 1405 out.print_raw (cmd); 1406 out.print_raw_cr("\" ..."); 1407 1408 if (os::fork_and_exec(cmd) < 0) { 1409 out.print_cr("os::fork_and_exec failed: %s (%s=%d)", 1410 os::strerror(errno), os::errno_name(errno), errno); 1411 } 1412 } 1413 1414 // done with OnError 1415 OnError = NULL; 1416 } 1417 1418 if (!UseOSErrorReporting) { 1419 // os::abort() will call abort hooks, try it first. 1420 static bool skip_os_abort = false; 1421 if (!skip_os_abort) { 1422 skip_os_abort = true; 1423 bool dump_core = should_report_bug(_id); 1424 os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context); 1425 } 1426 1427 // if os::abort() doesn't abort, try os::die(); 1428 os::die(); 1429 } 1430 } 1431 1432 /* 1433 * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this 1434 * ensures utilities such as jmap can observe the process is a consistent state. 1435 */ 1436 class VM_ReportJavaOutOfMemory : public VM_Operation { 1437 private: 1438 const char* _message; 1439 public: 1440 VM_ReportJavaOutOfMemory(const char* message) { _message = message; } 1441 VMOp_Type type() const { return VMOp_ReportJavaOutOfMemory; } 1442 void doit(); 1443 }; 1444 1445 void VM_ReportJavaOutOfMemory::doit() { 1446 // Don't allocate large buffer on stack 1447 static char buffer[O_BUFLEN]; 1448 1449 tty->print_cr("#"); 1450 tty->print_cr("# java.lang.OutOfMemoryError: %s", _message); 1451 tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError); 1452 1453 // make heap parsability 1454 Universe::heap()->ensure_parsability(false); // no need to retire TLABs 1455 1456 char* cmd; 1457 const char* ptr = OnOutOfMemoryError; 1458 while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){ 1459 tty->print("# Executing "); 1460 #if defined(LINUX) 1461 tty->print ("/bin/sh -c "); 1462 #elif defined(SOLARIS) 1463 tty->print ("/usr/bin/sh -c "); 1464 #endif 1465 tty->print_cr("\"%s\"...", cmd); 1466 1467 if (os::fork_and_exec(cmd) < 0) { 1468 tty->print_cr("os::fork_and_exec failed: %s (%s=%d)", 1469 os::strerror(errno), os::errno_name(errno), errno); 1470 } 1471 } 1472 } 1473 1474 void VMError::report_java_out_of_memory(const char* message) { 1475 if (OnOutOfMemoryError && OnOutOfMemoryError[0]) { 1476 MutexLocker ml(Heap_lock); 1477 VM_ReportJavaOutOfMemory op(message); 1478 VMThread::execute(&op); 1479 } 1480 } 1481 1482 void VMError::show_message_box(char *buf, int buflen) { 1483 bool yes; 1484 do { 1485 error_string(buf, buflen); 1486 yes = os::start_debugging(buf,buflen); 1487 } while (yes); 1488 } 1489 1490 // Timeout handling: check if a timeout happened (either a single step did 1491 // timeout or the whole of error reporting hit ErrorLogTimeout). Interrupt 1492 // the reporting thread if that is the case. 1493 bool VMError::check_timeout() { 1494 1495 if (ErrorLogTimeout == 0) { 1496 return false; 1497 } 1498 1499 // Do not check for timeouts if we still have a message box to show to the 1500 // user or if there are OnError handlers to be run. 1501 if (ShowMessageBoxOnError 1502 || (OnError != NULL && OnError[0] != '\0') 1503 || Arguments::abort_hook() != NULL) { 1504 return false; 1505 } 1506 1507 const jlong reporting_start_time_l = get_reporting_start_time(); 1508 const jlong now = get_current_timestamp(); 1509 // Timestamp is stored in nanos. 1510 if (reporting_start_time_l > 0) { 1511 const jlong end = reporting_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR; 1512 if (end <= now) { 1513 _reporting_did_timeout = true; 1514 interrupt_reporting_thread(); 1515 return true; // global timeout 1516 } 1517 } 1518 1519 const jlong step_start_time_l = get_step_start_time(); 1520 if (step_start_time_l > 0) { 1521 // A step times out after a quarter of the total timeout. Steps are mostly fast unless they 1522 // hang for some reason, so this simple rule allows for three hanging step and still 1523 // hopefully leaves time enough for the rest of the steps to finish. 1524 const jlong end = step_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR / 4; 1525 if (end <= now) { 1526 _step_did_timeout = true; 1527 interrupt_reporting_thread(); 1528 return false; // (Not a global timeout) 1529 } 1530 } 1531 1532 return false; 1533 1534 } 1535