1 /*
   2  * Copyright (c) 2003, 2016, 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 "services/memTracker.hpp"
  42 #include "trace/traceMacros.hpp"
  43 #include "utilities/debug.hpp"
  44 #include "utilities/decoder.hpp"
  45 #include "utilities/defaultStream.hpp"
  46 #include "utilities/errorReporter.hpp"
  47 #include "utilities/events.hpp"
  48 #include "utilities/vmError.hpp"
  49 
  50 // List of environment variables that should be reported in error log file.
  51 const char *env_list[] = {
  52   // All platforms
  53   "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
  54   "JAVA_COMPILER", "PATH", "USERNAME",
  55 
  56   // Env variables that are defined on Solaris/Linux/BSD
  57   "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
  58   "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
  59 
  60   // defined on Linux
  61   "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
  62 
  63   // defined on Darwin
  64   "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
  65   "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
  66   "DYLD_INSERT_LIBRARIES",
  67 
  68   // defined on Windows
  69   "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
  70 
  71   (const char *)0
  72 };
  73 
  74 // A simple parser for -XX:OnError, usage:
  75 //  ptr = OnError;
  76 //  while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
  77 //     ... ...
  78 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
  79   if (ptr == NULL || *ptr == NULL) return NULL;
  80 
  81   const char* cmd = *ptr;
  82 
  83   // skip leading blanks or ';'
  84   while (*cmd == ' ' || *cmd == ';') cmd++;
  85 
  86   if (*cmd == '\0') return NULL;
  87 
  88   const char * cmdend = cmd;
  89   while (*cmdend != '\0' && *cmdend != ';') cmdend++;
  90 
  91   Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
  92 
  93   *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
  94   return buf;
  95 }
  96 
  97 static void print_bug_submit_message(outputStream *out, Thread *thread) {
  98   if (out == NULL) return;
  99   out->print_raw_cr("# If you would like to submit a bug report, please visit:");
 100   out->print_raw   ("#   ");
 101   out->print_raw_cr(Arguments::java_vendor_url_bug());
 102   // If the crash is in native code, encourage user to submit a bug to the
 103   // provider of that code.
 104   if (thread && thread->is_Java_thread() &&
 105       !thread->is_hidden_from_external_view()) {
 106     JavaThread* jt = (JavaThread*)thread;
 107     if (jt->thread_state() == _thread_in_native) {
 108       out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
 109     }
 110   }
 111   out->print_raw_cr("#");
 112 }
 113 
 114 bool VMError::coredump_status;
 115 char VMError::coredump_message[O_BUFLEN];
 116 
 117 void VMError::record_coredump_status(const char* message, bool status) {
 118   coredump_status = status;
 119   strncpy(coredump_message, message, sizeof(coredump_message));
 120   coredump_message[sizeof(coredump_message)-1] = 0;
 121 }
 122 
 123 // Return a string to describe the error
 124 char* VMError::error_string(char* buf, int buflen) {
 125   char signame_buf[64];
 126   const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
 127 
 128   if (signame) {
 129     jio_snprintf(buf, buflen,
 130                  "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
 131                  signame, _id, _pc,
 132                  os::current_process_id(), os::current_thread_id());
 133   } else if (_filename != NULL && _lineno > 0) {
 134     // skip directory names
 135     char separator = os::file_separator()[0];
 136     const char *p = strrchr(_filename, separator);
 137     int n = jio_snprintf(buf, buflen,
 138                          "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
 139                          p ? p + 1 : _filename, _lineno,
 140                          os::current_process_id(), os::current_thread_id());
 141     if (n >= 0 && n < buflen && _message) {
 142       if (strlen(_detail_msg) > 0) {
 143         jio_snprintf(buf + n, buflen - n, "%s%s: %s",
 144         os::line_separator(), _message, _detail_msg);
 145       } else {
 146         jio_snprintf(buf + n, buflen - n, "%sError: %s",
 147                      os::line_separator(), _message);
 148       }
 149     }
 150   } else {
 151     jio_snprintf(buf, buflen,
 152                  "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
 153                  _id, os::current_process_id(), os::current_thread_id());
 154   }
 155 
 156   return buf;
 157 }
 158 
 159 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
 160                                 char* buf, int buflen, bool verbose) {
 161 #ifdef ZERO
 162   if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
 163     // StackFrameStream uses the frame anchor, which may not have
 164     // been set up.  This can be done at any time in Zero, however,
 165     // so if it hasn't been set up then we just set it up now and
 166     // clear it again when we're done.
 167     bool has_last_Java_frame = jt->has_last_Java_frame();
 168     if (!has_last_Java_frame)
 169       jt->set_last_Java_frame();
 170     st->print("Java frames:");
 171 
 172     // If the top frame is a Shark frame and the frame anchor isn't
 173     // set up then it's possible that the information in the frame
 174     // is garbage: it could be from a previous decache, or it could
 175     // simply have never been written.  So we print a warning...
 176     StackFrameStream sfs(jt);
 177     if (!has_last_Java_frame && !sfs.is_done()) {
 178       if (sfs.current()->zeroframe()->is_shark_frame()) {
 179         st->print(" (TOP FRAME MAY BE JUNK)");
 180       }
 181     }
 182     st->cr();
 183 
 184     // Print the frames
 185     for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
 186       sfs.current()->zero_print_on_error(i, st, buf, buflen);
 187       st->cr();
 188     }
 189 
 190     // Reset the frame anchor if necessary
 191     if (!has_last_Java_frame)
 192       jt->reset_last_Java_frame();
 193   }
 194 #else
 195   if (jt->has_last_Java_frame()) {
 196     st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
 197     for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
 198       sfs.current()->print_on_error(st, buf, buflen, verbose);
 199       st->cr();
 200     }
 201   }
 202 #endif // ZERO
 203 }
 204 
 205 static void print_oom_reasons(outputStream* st) {
 206   st->print_cr("# Possible reasons:");
 207   st->print_cr("#   The system is out of physical RAM or swap space");
 208   if (UseCompressedOops) {
 209     st->print_cr("#   The process is running with CompressedOops enabled, and the Java Heap may be blocking the growth of the native heap");
 210   }
 211   if (LogBytesPerWord == 2) {
 212     st->print_cr("#   In 32 bit mode, the process size limit was hit");
 213   }
 214   st->print_cr("# Possible solutions:");
 215   st->print_cr("#   Reduce memory load on the system");
 216   st->print_cr("#   Increase physical memory or swap space");
 217   st->print_cr("#   Check if swap backing store is full");
 218   if (LogBytesPerWord == 2) {
 219     st->print_cr("#   Use 64 bit Java on a 64 bit OS");
 220   }
 221   st->print_cr("#   Decrease Java heap size (-Xmx/-Xms)");
 222   st->print_cr("#   Decrease number of Java threads");
 223   st->print_cr("#   Decrease Java thread stack sizes (-Xss)");
 224   st->print_cr("#   Set larger code cache with -XX:ReservedCodeCacheSize=");
 225   if (UseCompressedOops) {
 226     switch (Universe::narrow_oop_mode()) {
 227       case Universe::UnscaledNarrowOop:
 228         st->print_cr("#   JVM is running with Unscaled Compressed Oops mode in which the Java heap is");
 229         st->print_cr("#     placed in the first 4GB address space. The Java Heap base address is the");
 230         st->print_cr("#     maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
 231         st->print_cr("#     to set the Java Heap base and to place the Java Heap above 4GB virtual address.");
 232         break;
 233       case Universe::ZeroBasedNarrowOop:
 234         st->print_cr("#   JVM is running with Zero Based Compressed Oops mode in which the Java heap is");
 235         st->print_cr("#     placed in the first 32GB address space. The Java Heap base address is the");
 236         st->print_cr("#     maximum limit for the native heap growth. Please use -XX:HeapBaseMinAddress");
 237         st->print_cr("#     to set the Java Heap base and to place the Java Heap above 32GB virtual address.");
 238         break;
 239     }
 240   }
 241   st->print_cr("# This output file may be truncated or incomplete.");
 242 }
 243 
 244 static const char* gc_mode() {
 245   if (UseG1GC)            return "g1 gc";
 246   if (UseParallelGC)      return "parallel gc";
 247   if (UseConcMarkSweepGC) return "concurrent mark sweep gc";
 248   if (UseSerialGC)        return "serial gc";

 249   return "ERROR in GC mode";
 250 }
 251 
 252 static void report_vm_version(outputStream* st, char* buf, int buflen) {
 253    // VM version
 254    st->print_cr("#");
 255    JDK_Version::current().to_string(buf, buflen);
 256    const char* runtime_name = JDK_Version::runtime_name() != NULL ?
 257                                 JDK_Version::runtime_name() : "";
 258    const char* runtime_version = JDK_Version::runtime_version() != NULL ?
 259                                    JDK_Version::runtime_version() : "";
 260    const char* jdk_debug_level = Abstract_VM_Version::printable_jdk_debug_level() != NULL ?
 261                                    Abstract_VM_Version::printable_jdk_debug_level() : "";
 262 
 263    st->print_cr("# JRE version: %s (%s) (%sbuild %s)", runtime_name, buf,
 264                  jdk_debug_level, runtime_version);
 265 
 266    // This is the long version with some default settings added
 267    st->print_cr("# Java VM: %s (%s%s, %s%s%s%s%s, %s, %s)",
 268                  Abstract_VM_Version::vm_name(),
 269                  jdk_debug_level,
 270                  Abstract_VM_Version::vm_release(),
 271                  Abstract_VM_Version::vm_info_string(),
 272                  TieredCompilation ? ", tiered" : "",
 273 #if INCLUDE_JVMCI
 274                  EnableJVMCI ? ", jvmci" : "",
 275                  UseJVMCICompiler ? ", jvmci compiler" : "",
 276 #else
 277                  "", "",
 278 #endif
 279                  UseCompressedOops ? ", compressed oops" : "",
 280                  gc_mode(),
 281                  Abstract_VM_Version::vm_platform_string()
 282                );
 283 }
 284 
 285 // This is the main function to report a fatal error. Only one thread can
 286 // call this function, so we don't need to worry about MT-safety. But it's
 287 // possible that the error handler itself may crash or die on an internal
 288 // error, for example, when the stack/heap is badly damaged. We must be
 289 // able to handle recursive errors that happen inside error handler.
 290 //
 291 // Error reporting is done in several steps. If a crash or internal error
 292 // occurred when reporting an error, the nested signal/exception handler
 293 // can skip steps that are already (or partially) done. Error reporting will
 294 // continue from the next step. This allows us to retrieve and print
 295 // information that may be unsafe to get after a fatal error. If it happens,
 296 // you may find nested report_and_die() frames when you look at the stack
 297 // in a debugger.
 298 //
 299 // In general, a hang in error handler is much worse than a crash or internal
 300 // error, as it's harder to recover from a hang. Deadlock can happen if we
 301 // try to grab a lock that is already owned by current thread, or if the
 302 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
 303 // error handler and all the functions it called should avoid grabbing any
 304 // lock. An important thing to notice is that memory allocation needs a lock.
 305 //
 306 // We should avoid using large stack allocated buffers. Many errors happen
 307 // when stack space is already low. Making things even worse is that there
 308 // could be nested report_and_die() calls on stack (see above). Only one
 309 // thread can report error, so large buffers are statically allocated in data
 310 // segment.
 311 
 312 int          VMError::_current_step;
 313 const char*  VMError::_current_step_info;
 314 
 315 void VMError::report(outputStream* st, bool _verbose) {
 316 
 317 # define BEGIN if (_current_step == 0) { _current_step = __LINE__;
 318 # define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s;
 319 # define END }
 320 
 321   // don't allocate large buffer on stack
 322   static char buf[O_BUFLEN];
 323 
 324   BEGIN
 325 
 326   STEP("printing fatal error message")
 327 
 328     st->print_cr("#");
 329     if (should_report_bug(_id)) {
 330       st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
 331     } else {
 332       st->print_cr("# There is insufficient memory for the Java "
 333                    "Runtime Environment to continue.");
 334     }
 335 
 336 #ifndef PRODUCT
 337   // Error handler self tests
 338 
 339   // test secondary error handling. Test it twice, to test that resetting
 340   // error handler after a secondary crash works.
 341   STEP("test secondary crash 1")
 342     if (_verbose && TestCrashInErrorHandler != 0) {
 343       st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
 344         TestCrashInErrorHandler);
 345       controlled_crash(TestCrashInErrorHandler);
 346     }
 347 
 348   STEP("test secondary crash 2")
 349     if (_verbose && TestCrashInErrorHandler != 0) {
 350       st->print_cr("Will crash now (TestCrashInErrorHandler=" UINTX_FORMAT ")...",
 351         TestCrashInErrorHandler);
 352       controlled_crash(TestCrashInErrorHandler);
 353     }
 354 
 355   STEP("test safefetch in error handler")
 356     // test whether it is safe to use SafeFetch32 in Crash Handler. Test twice
 357     // to test that resetting the signal handler works correctly.
 358     if (_verbose && TestSafeFetchInErrorHandler) {
 359       st->print_cr("Will test SafeFetch...");
 360       if (CanUseSafeFetch32()) {
 361         int* const invalid_pointer = (int*) get_segfault_address();
 362         const int x = 0x76543210;
 363         int i1 = SafeFetch32(invalid_pointer, x);
 364         int i2 = SafeFetch32(invalid_pointer, x);
 365         if (i1 == x && i2 == x) {
 366           st->print_cr("SafeFetch OK."); // Correctly deflected and returned default pattern
 367         } else {
 368           st->print_cr("??");
 369         }
 370       } else {
 371         st->print_cr("not possible; skipped.");
 372       }
 373     }
 374 #endif // PRODUCT
 375 
 376   STEP("printing type of error")
 377 
 378      switch(_id) {
 379        case OOM_MALLOC_ERROR:
 380        case OOM_MMAP_ERROR:
 381          if (_size) {
 382            st->print("# Native memory allocation ");
 383            st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
 384                                                  "(mmap) failed to map ");
 385            jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
 386            st->print("%s", buf);
 387            st->print(" bytes");
 388            if (strlen(_detail_msg) > 0) {
 389              st->print(" for ");
 390              st->print("%s", _detail_msg);
 391            }
 392            st->cr();
 393          } else {
 394            if (strlen(_detail_msg) > 0) {
 395              st->print("# ");
 396              st->print_cr("%s", _detail_msg);
 397            }
 398          }
 399          // In error file give some solutions
 400          if (_verbose) {
 401            print_oom_reasons(st);
 402          } else {
 403            return;  // that's enough for the screen
 404          }
 405          break;
 406        case INTERNAL_ERROR:
 407        default:
 408          break;
 409      }
 410 
 411   STEP("printing exception/signal name")
 412 
 413      st->print_cr("#");
 414      st->print("#  ");
 415      // Is it an OS exception/signal?
 416      if (os::exception_name(_id, buf, sizeof(buf))) {
 417        st->print("%s", buf);
 418        st->print(" (0x%x)", _id);                // signal number
 419        st->print(" at pc=" PTR_FORMAT, p2i(_pc));
 420      } else {
 421        if (should_report_bug(_id)) {
 422          st->print("Internal Error");
 423        } else {
 424          st->print("Out of Memory Error");
 425        }
 426        if (_filename != NULL && _lineno > 0) {
 427 #ifdef PRODUCT
 428          // In product mode chop off pathname?
 429          char separator = os::file_separator()[0];
 430          const char *p = strrchr(_filename, separator);
 431          const char *file = p ? p+1 : _filename;
 432 #else
 433          const char *file = _filename;
 434 #endif
 435          st->print(" (%s:%d)", file, _lineno);
 436        } else {
 437          st->print(" (0x%x)", _id);
 438        }
 439      }
 440 
 441   STEP("printing current thread and pid")
 442 
 443      // process id, thread id
 444      st->print(", pid=%d", os::current_process_id());
 445      st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
 446      st->cr();
 447 
 448   STEP("printing error message")
 449 
 450      if (should_report_bug(_id)) {  // already printed the message.
 451        // error message
 452        if (strlen(_detail_msg) > 0) {
 453          st->print_cr("#  %s: %s", _message ? _message : "Error", _detail_msg);
 454        } else if (_message) {
 455          st->print_cr("#  Error: %s", _message);
 456        }
 457      }
 458 
 459   STEP("printing Java version string")
 460 
 461      report_vm_version(st, buf, sizeof(buf));
 462 
 463   STEP("printing problematic frame")
 464 
 465      // Print current frame if we have a context (i.e. it's a crash)
 466      if (_context) {
 467        st->print_cr("# Problematic frame:");
 468        st->print("# ");
 469        frame fr = os::fetch_frame_from_context(_context);
 470        fr.print_on_error(st, buf, sizeof(buf));
 471        st->cr();
 472        st->print_cr("#");
 473      }
 474 
 475   STEP("printing core file information")
 476     st->print("# ");
 477     if (CreateCoredumpOnCrash) {
 478       if (coredump_status) {
 479         st->print("Core dump will be written. Default location: %s", coredump_message);
 480       } else {
 481         st->print("No core dump will be written. %s", coredump_message);
 482       }
 483     } else {
 484       st->print("CreateCoredumpOnCrash turned off, no core file dumped");
 485     }
 486     st->cr();
 487     st->print_cr("#");
 488 
 489   STEP("printing bug submit message")
 490 
 491      if (should_report_bug(_id) && _verbose) {
 492        print_bug_submit_message(st, _thread);
 493      }
 494 
 495   STEP("printing summary")
 496 
 497      if (_verbose) {
 498        st->cr();
 499        st->print_cr("---------------  S U M M A R Y ------------");
 500        st->cr();
 501      }
 502 
 503   STEP("printing VM option summary")
 504 
 505      if (_verbose) {
 506        // VM options
 507        Arguments::print_summary_on(st);
 508        st->cr();
 509      }
 510 
 511   STEP("printing summary machine and OS info")
 512 
 513      if (_verbose) {
 514        os::print_summary_info(st, buf, sizeof(buf));
 515      }
 516 
 517 
 518   STEP("printing date and time")
 519 
 520      if (_verbose) {
 521        os::print_date_and_time(st, buf, sizeof(buf));
 522      }
 523 
 524   STEP("printing thread")
 525 
 526      if (_verbose) {
 527        st->cr();
 528        st->print_cr("---------------  T H R E A D  ---------------");
 529        st->cr();
 530      }
 531 
 532   STEP("printing current thread")
 533 
 534      // current thread
 535      if (_verbose) {
 536        if (_thread) {
 537          st->print("Current thread (" PTR_FORMAT "):  ", p2i(_thread));
 538          _thread->print_on_error(st, buf, sizeof(buf));
 539          st->cr();
 540        } else {
 541          st->print_cr("Current thread is native thread");
 542        }
 543        st->cr();
 544      }
 545 
 546   STEP("printing current compile task")
 547 
 548      if (_verbose && _thread && _thread->is_Compiler_thread()) {
 549         CompilerThread* t = (CompilerThread*)_thread;
 550         if (t->task()) {
 551            st->cr();
 552            st->print_cr("Current CompileTask:");
 553            t->task()->print_line_on_error(st, buf, sizeof(buf));
 554            st->cr();
 555         }
 556      }
 557 
 558 
 559   STEP("printing stack bounds")
 560 
 561      if (_verbose) {
 562        st->print("Stack: ");
 563 
 564        address stack_top;
 565        size_t stack_size;
 566 
 567        if (_thread) {
 568           stack_top = _thread->stack_base();
 569           stack_size = _thread->stack_size();
 570        } else {
 571           stack_top = os::current_stack_base();
 572           stack_size = os::current_stack_size();
 573        }
 574 
 575        address stack_bottom = stack_top - stack_size;
 576        st->print("[" PTR_FORMAT "," PTR_FORMAT "]", p2i(stack_bottom), p2i(stack_top));
 577 
 578        frame fr = _context ? os::fetch_frame_from_context(_context)
 579                            : os::current_frame();
 580 
 581        if (fr.sp()) {
 582          st->print(",  sp=" PTR_FORMAT, p2i(fr.sp()));
 583          size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
 584          st->print(",  free space=" SIZE_FORMAT "k", free_stack_size);
 585        }
 586 
 587        st->cr();
 588      }
 589 
 590   STEP("printing native stack")
 591 
 592    if (_verbose) {
 593      if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
 594        // We have printed the native stack in platform-specific code
 595        // Windows/x64 needs special handling.
 596      } else {
 597        frame fr = _context ? os::fetch_frame_from_context(_context)
 598                            : os::current_frame();
 599 
 600        print_native_stack(st, fr, _thread, buf, sizeof(buf));
 601      }
 602    }
 603 
 604   STEP("printing Java stack")
 605 
 606      if (_verbose && _thread && _thread->is_Java_thread()) {
 607        print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
 608      }
 609 
 610   STEP("printing target Java thread stack")
 611 
 612      // printing Java thread stack trace if it is involved in GC crash
 613      if (_verbose && _thread && (_thread->is_Named_thread())) {
 614        JavaThread*  jt = ((NamedThread *)_thread)->processed_thread();
 615        if (jt != NULL) {
 616          st->print_cr("JavaThread " PTR_FORMAT " (nid = %d) was being processed", p2i(jt), jt->osthread()->thread_id());
 617          print_stack_trace(st, jt, buf, sizeof(buf), true);
 618        }
 619      }
 620 
 621   STEP("printing siginfo")
 622 
 623      // signal no, signal code, address that caused the fault
 624      if (_verbose && _siginfo) {
 625        st->cr();
 626        os::print_siginfo(st, _siginfo);
 627        st->cr();
 628      }
 629 
 630   STEP("CDS archive access warning")
 631 
 632      // Print an explicit hint if we crashed on access to the CDS archive.
 633      if (_verbose && _siginfo) {
 634        check_failing_cds_access(st, _siginfo);
 635        st->cr();
 636      }
 637 
 638   STEP("printing register info")
 639 
 640      // decode register contents if possible
 641      if (_verbose && _context && Universe::is_fully_initialized()) {
 642        os::print_register_info(st, _context);
 643        st->cr();
 644      }
 645 
 646   STEP("printing registers, top of stack, instructions near pc")
 647 
 648      // registers, top of stack, instructions near pc
 649      if (_verbose && _context) {
 650        os::print_context(st, _context);
 651        st->cr();
 652      }
 653 
 654   STEP("printing code blob if possible")
 655 
 656      if (_verbose && _context) {
 657        CodeBlob* cb = CodeCache::find_blob(_pc);
 658        if (cb != NULL) {
 659          if (Interpreter::contains(_pc)) {
 660            // The interpreter CodeBlob is very large so try to print the codelet instead.
 661            InterpreterCodelet* codelet = Interpreter::codelet_containing(_pc);
 662            if (codelet != NULL) {
 663              codelet->print_on(st);
 664              Disassembler::decode(codelet->code_begin(), codelet->code_end(), st);
 665            }
 666          } else {
 667            StubCodeDesc* desc = StubCodeDesc::desc_for(_pc);
 668            if (desc != NULL) {
 669              desc->print_on(st);
 670              Disassembler::decode(desc->begin(), desc->end(), st);
 671            } else {
 672              Disassembler::decode(cb, st);
 673              st->cr();
 674            }
 675          }
 676        }
 677      }
 678 
 679   STEP("printing VM operation")
 680 
 681      if (_verbose && _thread && _thread->is_VM_thread()) {
 682         VMThread* t = (VMThread*)_thread;
 683         VM_Operation* op = t->vm_operation();
 684         if (op) {
 685           op->print_on_error(st);
 686           st->cr();
 687           st->cr();
 688         }
 689      }
 690 
 691   STEP("printing process")
 692 
 693      if (_verbose) {
 694        st->cr();
 695        st->print_cr("---------------  P R O C E S S  ---------------");
 696        st->cr();
 697      }
 698 
 699   STEP("printing all threads")
 700 
 701      // all threads
 702      if (_verbose && _thread) {
 703        Threads::print_on_error(st, _thread, buf, sizeof(buf));
 704        st->cr();
 705      }
 706 
 707   STEP("printing VM state")
 708 
 709      if (_verbose) {
 710        // Safepoint state
 711        st->print("VM state:");
 712 
 713        if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
 714        else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
 715        else st->print("not at safepoint");
 716 
 717        // Also see if error occurred during initialization or shutdown
 718        if (!Universe::is_fully_initialized()) {
 719          st->print(" (not fully initialized)");
 720        } else if (VM_Exit::vm_exited()) {
 721          st->print(" (shutting down)");
 722        } else {
 723          st->print(" (normal execution)");
 724        }
 725        st->cr();
 726        st->cr();
 727      }
 728 
 729   STEP("printing owned locks on error")
 730 
 731      // mutexes/monitors that currently have an owner
 732      if (_verbose) {
 733        print_owned_locks_on_error(st);
 734        st->cr();
 735      }
 736 
 737   STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
 738 
 739      if (_verbose && Exceptions::has_exception_counts()) {
 740        st->print_cr("OutOfMemory and StackOverflow Exception counts:");
 741        Exceptions::print_exception_counts_on_error(st);
 742        st->cr();
 743      }
 744 
 745   STEP("printing compressed oops mode")
 746 
 747      if (_verbose && UseCompressedOops) {
 748        Universe::print_compressed_oops_mode(st);
 749        if (UseCompressedClassPointers) {
 750          Metaspace::print_compressed_class_space(st);
 751        }
 752        st->cr();
 753      }
 754 
 755   STEP("printing heap information")
 756 
 757      if (_verbose && Universe::is_fully_initialized()) {
 758        Universe::heap()->print_on_error(st);
 759        st->cr();
 760        st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
 761        st->cr();
 762      }
 763 
 764   STEP("printing code cache information")
 765 
 766      if (_verbose && Universe::is_fully_initialized()) {
 767        // print code cache information before vm abort
 768        CodeCache::print_summary(st);
 769        st->cr();
 770      }
 771 
 772   STEP("printing ring buffers")
 773 
 774      if (_verbose) {
 775        Events::print_all(st);
 776        st->cr();
 777      }
 778 
 779   STEP("printing dynamic libraries")
 780 
 781      if (_verbose) {
 782        // dynamic libraries, or memory map
 783        os::print_dll_info(st);
 784        st->cr();
 785      }
 786 
 787   STEP("printing VM options")
 788 
 789      if (_verbose) {
 790        // VM options
 791        Arguments::print_on(st);
 792        st->cr();
 793      }
 794 
 795   STEP("printing warning if internal testing API used")
 796 
 797      if (WhiteBox::used()) {
 798        st->print_cr("Unsupported internal testing APIs have been used.");
 799        st->cr();
 800      }
 801 
 802   STEP("printing log configuration")
 803     if (_verbose){
 804       st->print_cr("Logging:");
 805       LogConfiguration::describe_current_configuration(st);
 806       st->cr();
 807     }
 808 
 809   STEP("printing all environment variables")
 810 
 811      if (_verbose) {
 812        os::print_environment_variables(st, env_list);
 813        st->cr();
 814      }
 815 
 816   STEP("printing signal handlers")
 817 
 818      if (_verbose) {
 819        os::print_signal_handlers(st, buf, sizeof(buf));
 820        st->cr();
 821      }
 822 
 823   STEP("Native Memory Tracking")
 824      if (_verbose) {
 825        MemTracker::error_report(st);
 826      }
 827 
 828   STEP("printing system")
 829 
 830      if (_verbose) {
 831        st->cr();
 832        st->print_cr("---------------  S Y S T E M  ---------------");
 833        st->cr();
 834      }
 835 
 836   STEP("printing OS information")
 837 
 838      if (_verbose) {
 839        os::print_os_info(st);
 840        st->cr();
 841      }
 842 
 843   STEP("printing CPU info")
 844      if (_verbose) {
 845        os::print_cpu_info(st, buf, sizeof(buf));
 846        st->cr();
 847      }
 848 
 849   STEP("printing memory info")
 850 
 851      if (_verbose) {
 852        os::print_memory_info(st);
 853        st->cr();
 854      }
 855 
 856   STEP("printing internal vm info")
 857 
 858      if (_verbose) {
 859        st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
 860        st->cr();
 861      }
 862 
 863   // print a defined marker to show that error handling finished correctly.
 864   STEP("printing end marker")
 865 
 866      if (_verbose) {
 867        st->print_cr("END.");
 868      }
 869 
 870   END
 871 
 872 # undef BEGIN
 873 # undef STEP
 874 # undef END
 875 }
 876 
 877 // Report for the vm_info_cmd. This prints out the information above omitting
 878 // crash and thread specific information.  If output is added above, it should be added
 879 // here also, if it is safe to call during a running process.
 880 void VMError::print_vm_info(outputStream* st) {
 881 
 882   char buf[O_BUFLEN];
 883   report_vm_version(st, buf, sizeof(buf));
 884 
 885   // STEP("printing summary")
 886 
 887   st->cr();
 888   st->print_cr("---------------  S U M M A R Y ------------");
 889   st->cr();
 890 
 891   // STEP("printing VM option summary")
 892 
 893   // VM options
 894   Arguments::print_summary_on(st);
 895   st->cr();
 896 
 897   // STEP("printing summary machine and OS info")
 898 
 899   os::print_summary_info(st, buf, sizeof(buf));
 900 
 901   // STEP("printing date and time")
 902 
 903   os::print_date_and_time(st, buf, sizeof(buf));
 904 
 905   // Skip: STEP("printing thread")
 906 
 907   // STEP("printing process")
 908 
 909   st->cr();
 910   st->print_cr("---------------  P R O C E S S  ---------------");
 911   st->cr();
 912 
 913   // STEP("printing number of OutOfMemoryError and StackOverflow exceptions")
 914 
 915   if (Exceptions::has_exception_counts()) {
 916     st->print_cr("OutOfMemory and StackOverflow Exception counts:");
 917     Exceptions::print_exception_counts_on_error(st);
 918     st->cr();
 919   }
 920 
 921   // STEP("printing compressed oops mode")
 922 
 923   if (UseCompressedOops) {
 924     Universe::print_compressed_oops_mode(st);
 925     if (UseCompressedClassPointers) {
 926       Metaspace::print_compressed_class_space(st);
 927     }
 928     st->cr();
 929   }
 930 
 931   // STEP("printing heap information")
 932 
 933   if (Universe::is_fully_initialized()) {
 934     MutexLocker hl(Heap_lock);
 935     Universe::heap()->print_on_error(st);
 936     st->cr();
 937     st->print_cr("Polling page: " INTPTR_FORMAT, p2i(os::get_polling_page()));
 938     st->cr();
 939   }
 940 
 941   // STEP("printing code cache information")
 942 
 943   if (Universe::is_fully_initialized()) {
 944     // print code cache information before vm abort
 945     CodeCache::print_summary(st);
 946     st->cr();
 947   }
 948 
 949   // STEP("printing ring buffers")
 950 
 951   Events::print_all(st);
 952   st->cr();
 953 
 954   // STEP("printing dynamic libraries")
 955 
 956   // dynamic libraries, or memory map
 957   os::print_dll_info(st);
 958   st->cr();
 959 
 960   // STEP("printing VM options")
 961 
 962   // VM options
 963   Arguments::print_on(st);
 964   st->cr();
 965 
 966   // STEP("printing warning if internal testing API used")
 967 
 968   if (WhiteBox::used()) {
 969     st->print_cr("Unsupported internal testing APIs have been used.");
 970     st->cr();
 971   }
 972 
 973   // STEP("printing log configuration")
 974   st->print_cr("Logging:");
 975   LogConfiguration::describe(st);
 976   st->cr();
 977 
 978   // STEP("printing all environment variables")
 979 
 980   os::print_environment_variables(st, env_list);
 981   st->cr();
 982 
 983   // STEP("printing signal handlers")
 984 
 985   os::print_signal_handlers(st, buf, sizeof(buf));
 986   st->cr();
 987 
 988   // STEP("Native Memory Tracking")
 989 
 990   MemTracker::error_report(st);
 991 
 992   // STEP("printing system")
 993 
 994   st->cr();
 995   st->print_cr("---------------  S Y S T E M  ---------------");
 996   st->cr();
 997 
 998   // STEP("printing OS information")
 999 
1000   os::print_os_info(st);
1001   st->cr();
1002 
1003   // STEP("printing CPU info")
1004 
1005   os::print_cpu_info(st, buf, sizeof(buf));
1006   st->cr();
1007 
1008   // STEP("printing memory info")
1009 
1010   os::print_memory_info(st);
1011   st->cr();
1012 
1013   // STEP("printing internal vm info")
1014 
1015   st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
1016   st->cr();
1017 
1018   // print a defined marker to show that error handling finished correctly.
1019   // STEP("printing end marker")
1020 
1021   st->print_cr("END.");
1022 }
1023 
1024 volatile intptr_t VMError::first_error_tid = -1;
1025 
1026 // An error could happen before tty is initialized or after it has been
1027 // destroyed.
1028 // Please note: to prevent large stack allocations, the log- and
1029 // output-stream use a global scratch buffer for format printing.
1030 // (see VmError::report_and_die(). Access to those streams is synchronized
1031 // in  VmError::report_and_die() - there is only one reporting thread at
1032 // any given time.
1033 fdStream VMError::out(defaultStream::output_fd());
1034 fdStream VMError::log; // error log used by VMError::report_and_die()
1035 
1036 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
1037 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
1038   int fd = -1;
1039   if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
1040     // the O_EXCL flag will cause the open to fail if the file exists
1041     fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
1042   }
1043   return fd;
1044 }
1045 
1046 /**
1047  * Construct file name for a log file and return it's file descriptor.
1048  * Name and location depends on pattern, default_pattern params and access
1049  * permissions.
1050  */
1051 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
1052   int fd = -1;
1053 
1054   // If possible, use specified pattern to construct log file name
1055   if (pattern != NULL) {
1056     fd = expand_and_open(pattern, buf, buflen, 0);
1057   }
1058 
1059   // Either user didn't specify, or the user's location failed,
1060   // so use the default name in the current directory
1061   if (fd == -1) {
1062     const char* cwd = os::get_current_directory(buf, buflen);
1063     if (cwd != NULL) {
1064       size_t pos = strlen(cwd);
1065       int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
1066       pos += fsep_len;
1067       if (fsep_len > 0) {
1068         fd = expand_and_open(default_pattern, buf, buflen, pos);
1069       }
1070     }
1071   }
1072 
1073    // try temp directory if it exists.
1074    if (fd == -1) {
1075      const char* tmpdir = os::get_temp_directory();
1076      if (tmpdir != NULL && strlen(tmpdir) > 0) {
1077        int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
1078        if (pos > 0) {
1079          fd = expand_and_open(default_pattern, buf, buflen, pos);
1080        }
1081      }
1082    }
1083 
1084   return fd;
1085 }
1086 
1087 int         VMError::_id;
1088 const char* VMError::_message;
1089 char        VMError::_detail_msg[1024];
1090 Thread*     VMError::_thread;
1091 address     VMError::_pc;
1092 void*       VMError::_siginfo;
1093 void*       VMError::_context;
1094 const char* VMError::_filename;
1095 int         VMError::_lineno;
1096 size_t      VMError::_size;
1097 
1098 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
1099                              void* context, const char* detail_fmt, ...)
1100 {
1101   va_list detail_args;
1102   va_start(detail_args, detail_fmt);
1103   report_and_die(sig, NULL, detail_fmt, detail_args, thread, pc, siginfo, context, NULL, 0, 0);
1104   va_end(detail_args);
1105 }
1106 
1107 void VMError::report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context)
1108 {
1109   report_and_die(thread, sig, pc, siginfo, context, "%s", "");
1110 }
1111 
1112 void VMError::report_and_die(const char* message, const char* detail_fmt, ...)
1113 {
1114   va_list detail_args;
1115   va_start(detail_args, detail_fmt);
1116   report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, NULL, NULL, NULL, NULL, NULL, 0, 0);
1117   va_end(detail_args);
1118 }
1119 
1120 void VMError::report_and_die(const char* message)
1121 {
1122   report_and_die(message, "%s", "");
1123 }
1124 
1125 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, const char* message,
1126                              const char* detail_fmt, va_list detail_args)
1127 {
1128   report_and_die(INTERNAL_ERROR, message, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, 0);
1129 }
1130 
1131 void VMError::report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
1132                              VMErrorType vm_err_type, const char* detail_fmt, va_list detail_args) {
1133   report_and_die(vm_err_type, NULL, detail_fmt, detail_args, thread, NULL, NULL, NULL, filename, lineno, size);
1134 }
1135 
1136 void VMError::report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
1137                              Thread* thread, address pc, void* siginfo, void* context, const char* filename,
1138                              int lineno, size_t size)
1139 {
1140   // Don't allocate large buffer on stack
1141   static char buffer[O_BUFLEN];
1142   out.set_scratch_buffer(buffer, sizeof(buffer));
1143   log.set_scratch_buffer(buffer, sizeof(buffer));
1144 
1145   // How many errors occurred in error handler when reporting first_error.
1146   static int recursive_error_count;
1147 
1148   // We will first print a brief message to standard out (verbose = false),
1149   // then save detailed information in log file (verbose = true).
1150   static bool out_done = false;         // done printing to standard out
1151   static bool log_done = false;         // done saving error log
1152   static bool transmit_report_done = false; // done error reporting
1153 
1154   if (SuppressFatalErrorMessage) {
1155       os::abort(CreateCoredumpOnCrash);
1156   }
1157   intptr_t mytid = os::current_thread_id();
1158   if (first_error_tid == -1 &&
1159       Atomic::cmpxchg_ptr(mytid, &first_error_tid, -1) == -1) {
1160 
1161     // Initialize time stamps to use the same base.
1162     out.time_stamp().update_to(1);
1163     log.time_stamp().update_to(1);
1164 
1165     _id = id;
1166     _message = message;
1167     _thread = thread;
1168     _pc = pc;
1169     _siginfo = siginfo;
1170     _context = context;
1171     _filename = filename;
1172     _lineno = lineno;
1173     _size = size;
1174     jio_vsnprintf(_detail_msg, sizeof(_detail_msg), detail_fmt, detail_args);
1175 
1176     // first time
1177     set_error_reported();
1178 
1179     if (ShowMessageBoxOnError || PauseAtExit) {
1180       show_message_box(buffer, sizeof(buffer));
1181 
1182       // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
1183       // WatcherThread can kill JVM if the error handler hangs.
1184       ShowMessageBoxOnError = false;
1185     }
1186 
1187     os::check_dump_limit(buffer, sizeof(buffer));
1188 
1189     // reset signal handlers or exception filter; make sure recursive crashes
1190     // are handled properly.
1191     reset_signal_handlers();
1192 
1193     TRACE_VM_ERROR();
1194 
1195   } else {
1196     // If UseOsErrorReporting we call this for each level of the call stack
1197     // while searching for the exception handler.  Only the first level needs
1198     // to be reported.
1199     if (UseOSErrorReporting && log_done) return;
1200 
1201     // This is not the first error, see if it happened in a different thread
1202     // or in the same thread during error reporting.
1203     if (first_error_tid != mytid) {
1204       char msgbuf[64];
1205       jio_snprintf(msgbuf, sizeof(msgbuf),
1206                    "[thread " INTX_FORMAT " also had an error]",
1207                    mytid);
1208       out.print_raw_cr(msgbuf);
1209 
1210       // error reporting is not MT-safe, block current thread
1211       os::infinite_sleep();
1212 
1213     } else {
1214       if (recursive_error_count++ > 30) {
1215         out.print_raw_cr("[Too many errors, abort]");
1216         os::die();
1217       }
1218 
1219       jio_snprintf(buffer, sizeof(buffer),
1220                    "[error occurred during error reporting (%s), id 0x%x]",
1221                    _current_step_info, _id);
1222       if (log.is_open()) {
1223         log.cr();
1224         log.print_raw_cr(buffer);
1225         log.cr();
1226       } else {
1227         out.cr();
1228         out.print_raw_cr(buffer);
1229         out.cr();
1230       }
1231     }
1232   }
1233 
1234   // print to screen
1235   if (!out_done) {
1236     report(&out, false);
1237 
1238     out_done = true;
1239 
1240     _current_step = 0;
1241     _current_step_info = "";
1242   }
1243 
1244   // print to error log file
1245   if (!log_done) {
1246     // see if log file is already open
1247     if (!log.is_open()) {
1248       // open log file
1249       int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
1250       if (fd != -1) {
1251         out.print_raw("# An error report file with more information is saved as:\n# ");
1252         out.print_raw_cr(buffer);
1253 
1254         log.set_fd(fd);
1255       } else {
1256         out.print_raw_cr("# Can not save log file, dump to screen..");
1257         log.set_fd(defaultStream::output_fd());
1258         /* Error reporting currently needs dumpfile.
1259          * Maybe implement direct streaming in the future.*/
1260         transmit_report_done = true;
1261       }
1262     }
1263 
1264     report(&log, true);
1265     _current_step = 0;
1266     _current_step_info = "";
1267 
1268     // Run error reporting to determine whether or not to report the crash.
1269     if (!transmit_report_done && should_report_bug(_id)) {
1270       transmit_report_done = true;
1271       const int fd2 = ::dup(log.fd());
1272       FILE* const hs_err = ::fdopen(fd2, "r");
1273       if (NULL != hs_err) {
1274         ErrorReporter er;
1275         er.call(hs_err, buffer, O_BUFLEN);
1276       }
1277       ::fclose(hs_err);
1278     }
1279 
1280     if (log.fd() != defaultStream::output_fd()) {
1281       close(log.fd());
1282     }
1283 
1284     log.set_fd(-1);
1285     log_done = true;
1286   }
1287 
1288   static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1289   if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1290     skip_replay = true;
1291     ciEnv* env = ciEnv::current();
1292     if (env != NULL) {
1293       int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1294       if (fd != -1) {
1295         FILE* replay_data_file = os::open(fd, "w");
1296         if (replay_data_file != NULL) {
1297           fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1298           env->dump_replay_data_unsafe(&replay_data_stream);
1299           out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1300           out.print_raw_cr(buffer);
1301         } else {
1302           int e = errno;
1303           out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1304           out.print_raw_cr(os::strerror(e));
1305         }
1306       }
1307     }
1308   }
1309 
1310   static bool skip_bug_url = !should_report_bug(_id);
1311   if (!skip_bug_url) {
1312     skip_bug_url = true;
1313 
1314     out.print_raw_cr("#");
1315     print_bug_submit_message(&out, _thread);
1316   }
1317 
1318   static bool skip_OnError = false;
1319   if (!skip_OnError && OnError && OnError[0]) {
1320     skip_OnError = true;
1321 
1322     // Flush output and finish logs before running OnError commands.
1323     ostream_abort();
1324 
1325     out.print_raw_cr("#");
1326     out.print_raw   ("# -XX:OnError=\"");
1327     out.print_raw   (OnError);
1328     out.print_raw_cr("\"");
1329 
1330     char* cmd;
1331     const char* ptr = OnError;
1332     while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1333       out.print_raw   ("#   Executing ");
1334 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1335       out.print_raw   ("/bin/sh -c ");
1336 #elif defined(SOLARIS)
1337       out.print_raw   ("/usr/bin/sh -c ");
1338 #endif
1339       out.print_raw   ("\"");
1340       out.print_raw   (cmd);
1341       out.print_raw_cr("\" ...");
1342 
1343       if (os::fork_and_exec(cmd) < 0) {
1344         out.print_cr("os::fork_and_exec failed: %s (%s=%d)",
1345                      os::strerror(errno), os::errno_name(errno), errno);
1346       }
1347     }
1348 
1349     // done with OnError
1350     OnError = NULL;
1351   }
1352 
1353   if (!UseOSErrorReporting) {
1354     // os::abort() will call abort hooks, try it first.
1355     static bool skip_os_abort = false;
1356     if (!skip_os_abort) {
1357       skip_os_abort = true;
1358       bool dump_core = should_report_bug(_id);
1359       os::abort(dump_core && CreateCoredumpOnCrash, _siginfo, _context);
1360     }
1361 
1362     // if os::abort() doesn't abort, try os::die();
1363     os::die();
1364   }
1365 }
1366 
1367 /*
1368  * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1369  * ensures utilities such as jmap can observe the process is a consistent state.
1370  */
1371 class VM_ReportJavaOutOfMemory : public VM_Operation {
1372  private:
1373   const char* _message;
1374  public:
1375   VM_ReportJavaOutOfMemory(const char* message) { _message = message; }
1376   VMOp_Type type() const                        { return VMOp_ReportJavaOutOfMemory; }
1377   void doit();
1378 };
1379 
1380 void VM_ReportJavaOutOfMemory::doit() {
1381   // Don't allocate large buffer on stack
1382   static char buffer[O_BUFLEN];
1383 
1384   tty->print_cr("#");
1385   tty->print_cr("# java.lang.OutOfMemoryError: %s", _message);
1386   tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1387 
1388   // make heap parsability
1389   Universe::heap()->ensure_parsability(false);  // no need to retire TLABs
1390 
1391   char* cmd;
1392   const char* ptr = OnOutOfMemoryError;
1393   while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1394     tty->print("#   Executing ");
1395 #if defined(LINUX)
1396     tty->print  ("/bin/sh -c ");
1397 #elif defined(SOLARIS)
1398     tty->print  ("/usr/bin/sh -c ");
1399 #endif
1400     tty->print_cr("\"%s\"...", cmd);
1401 
1402     if (os::fork_and_exec(cmd) < 0) {
1403       tty->print_cr("os::fork_and_exec failed: %s (%s=%d)",
1404                      os::strerror(errno), os::errno_name(errno), errno);
1405     }
1406   }
1407 }
1408 
1409 void VMError::report_java_out_of_memory(const char* message) {
1410   if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1411     MutexLocker ml(Heap_lock);
1412     VM_ReportJavaOutOfMemory op(message);
1413     VMThread::execute(&op);
1414   }
1415 }
1416 
1417 void VMError::show_message_box(char *buf, int buflen) {
1418   bool yes;
1419   do {
1420     error_string(buf, buflen);
1421     yes = os::start_debugging(buf,buflen);
1422   } while (yes);
1423 }
--- EOF ---