rev 7758 : 8065895 Synchronous signals during error reporting may terminate or hang VM process
Reviewed-by: dholmes,gziemski
Contributed-by: stuefe

   1 /*
   2  * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include <fcntl.h>
  26 #include "precompiled.hpp"
  27 #include "code/codeCache.hpp"
  28 #include "compiler/compileBroker.hpp"
  29 #include "gc_interface/collectedHeap.hpp"
  30 #include "prims/whitebox.hpp"
  31 #include "runtime/arguments.hpp"
  32 #include "runtime/atomic.inline.hpp"
  33 #include "runtime/frame.inline.hpp"
  34 #include "runtime/init.hpp"
  35 #include "runtime/os.hpp"
  36 #include "runtime/thread.inline.hpp"
  37 #include "runtime/vmThread.hpp"
  38 #include "runtime/vm_operations.hpp"
  39 #include "services/memTracker.hpp"
  40 #include "utilities/debug.hpp"
  41 #include "utilities/decoder.hpp"
  42 #include "utilities/defaultStream.hpp"
  43 #include "utilities/errorReporter.hpp"
  44 #include "utilities/events.hpp"
  45 #include "utilities/top.hpp"
  46 #include "utilities/vmError.hpp"
  47 
  48 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
  49 
  50 // List of environment variables that should be reported in error log file.
  51 const char *env_list[] = {
  52   // All platforms
  53   "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
  54   "JAVA_COMPILER", "PATH", "USERNAME",
  55 
  56   // Env variables that are defined on Solaris/Linux/BSD
  57   "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
  58   "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
  59 
  60   // defined on Linux
  61   "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
  62 
  63   // defined on Darwin
  64   "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
  65   "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
  66   "DYLD_INSERT_LIBRARIES",
  67 
  68   // defined on Windows
  69   "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
  70 
  71   (const char *)0
  72 };
  73 
  74 // Fatal error handler for internal errors and crashes.
  75 //
  76 // The default behavior of fatal error handler is to print a brief message
  77 // to standard out (defaultStream::output_fd()), then save detailed information
  78 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
  79 // threads are having troubles at the same time, only one error is reported.
  80 // The thread that is reporting error will abort VM when it is done, all other
  81 // threads are blocked forever inside report_and_die().
  82 
  83 // Constructor for crashes
  84 VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) {
  85     _thread = thread;
  86     _id = sig;
  87     _pc   = pc;
  88     _siginfo = siginfo;
  89     _context = context;
  90 
  91     _verbose = false;
  92     _current_step = 0;
  93     _current_step_info = NULL;
  94 
  95     _message = NULL;
  96     _detail_msg = NULL;
  97     _filename = NULL;
  98     _lineno = 0;
  99 
 100     _size = 0;
 101 }
 102 
 103 // Constructor for internal errors
 104 VMError::VMError(Thread* thread, const char* filename, int lineno,
 105                  const char* message, const char * detail_msg)
 106 {
 107   _thread = thread;
 108   _id = INTERNAL_ERROR;     // Value that's not an OS exception/signal
 109   _filename = filename;
 110   _lineno = lineno;
 111   _message = message;
 112   _detail_msg = detail_msg;
 113 
 114   _verbose = false;
 115   _current_step = 0;
 116   _current_step_info = NULL;
 117 
 118   _pc = NULL;
 119   _siginfo = NULL;
 120   _context = NULL;
 121 
 122   _size = 0;
 123 }
 124 
 125 // Constructor for OOM errors
 126 VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size,
 127                  VMErrorType vm_err_type, const char* message) {
 128     _thread = thread;
 129     _id = vm_err_type; // Value that's not an OS exception/signal
 130     _filename = filename;
 131     _lineno = lineno;
 132     _message = message;
 133     _detail_msg = NULL;
 134 
 135     _verbose = false;
 136     _current_step = 0;
 137     _current_step_info = NULL;
 138 
 139     _pc = NULL;
 140     _siginfo = NULL;
 141     _context = NULL;
 142 
 143     _size = size;
 144 }
 145 
 146 
 147 // Constructor for non-fatal errors
 148 VMError::VMError(const char* message) {
 149     _thread = NULL;
 150     _id = INTERNAL_ERROR;     // Value that's not an OS exception/signal
 151     _filename = NULL;
 152     _lineno = 0;
 153     _message = message;
 154     _detail_msg = NULL;
 155 
 156     _verbose = false;
 157     _current_step = 0;
 158     _current_step_info = NULL;
 159 
 160     _pc = NULL;
 161     _siginfo = NULL;
 162     _context = NULL;
 163 
 164     _size = 0;
 165 }
 166 
 167 // -XX:OnError=<string>, where <string> can be a list of commands, separated
 168 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
 169 // a single "%". Some examples:
 170 //
 171 // -XX:OnError="pmap %p"                // show memory map
 172 // -XX:OnError="gcore %p; dbx - %p"     // dump core and launch debugger
 173 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
 174 // -XX:OnError="kill -9 %p"             // ?#!@#
 175 
 176 // A simple parser for -XX:OnError, usage:
 177 //  ptr = OnError;
 178 //  while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
 179 //     ... ...
 180 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
 181   if (ptr == NULL || *ptr == NULL) return NULL;
 182 
 183   const char* cmd = *ptr;
 184 
 185   // skip leading blanks or ';'
 186   while (*cmd == ' ' || *cmd == ';') cmd++;
 187 
 188   if (*cmd == '\0') return NULL;
 189 
 190   const char * cmdend = cmd;
 191   while (*cmdend != '\0' && *cmdend != ';') cmdend++;
 192 
 193   Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
 194 
 195   *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
 196   return buf;
 197 }
 198 
 199 
 200 static void print_bug_submit_message(outputStream *out, Thread *thread) {
 201   if (out == NULL) return;
 202   out->print_raw_cr("# If you would like to submit a bug report, please visit:");
 203   out->print_raw   ("#   ");
 204   out->print_raw_cr(Arguments::java_vendor_url_bug());
 205   // If the crash is in native code, encourage user to submit a bug to the
 206   // provider of that code.
 207   if (thread && thread->is_Java_thread() &&
 208       !thread->is_hidden_from_external_view()) {
 209     JavaThread* jt = (JavaThread*)thread;
 210     if (jt->thread_state() == _thread_in_native) {
 211       out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
 212     }
 213   }
 214   out->print_raw_cr("#");
 215 }
 216 
 217 bool VMError::coredump_status;
 218 char VMError::coredump_message[O_BUFLEN];
 219 
 220 void VMError::report_coredump_status(const char* message, bool status) {
 221   coredump_status = status;
 222   strncpy(coredump_message, message, sizeof(coredump_message));
 223   coredump_message[sizeof(coredump_message)-1] = 0;
 224 }
 225 
 226 
 227 // Return a string to describe the error
 228 char* VMError::error_string(char* buf, int buflen) {
 229   char signame_buf[64];
 230   const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
 231 
 232   if (signame) {
 233     jio_snprintf(buf, buflen,
 234                  "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
 235                  signame, _id, _pc,
 236                  os::current_process_id(), os::current_thread_id());
 237   } else if (_filename != NULL && _lineno > 0) {
 238     // skip directory names
 239     char separator = os::file_separator()[0];
 240     const char *p = strrchr(_filename, separator);
 241     int n = jio_snprintf(buf, buflen,
 242                          "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
 243                          p ? p + 1 : _filename, _lineno,
 244                          os::current_process_id(), os::current_thread_id());
 245     if (n >= 0 && n < buflen && _message) {
 246       if (_detail_msg) {
 247         jio_snprintf(buf + n, buflen - n, "%s%s: %s",
 248                      os::line_separator(), _message, _detail_msg);
 249       } else {
 250         jio_snprintf(buf + n, buflen - n, "%sError: %s",
 251                      os::line_separator(), _message);
 252       }
 253     }
 254   } else {
 255     jio_snprintf(buf, buflen,
 256                  "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
 257                  _id, os::current_process_id(), os::current_thread_id());
 258   }
 259 
 260   return buf;
 261 }
 262 
 263 void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
 264                                 char* buf, int buflen, bool verbose) {
 265 #ifdef ZERO
 266   if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
 267     // StackFrameStream uses the frame anchor, which may not have
 268     // been set up.  This can be done at any time in Zero, however,
 269     // so if it hasn't been set up then we just set it up now and
 270     // clear it again when we're done.
 271     bool has_last_Java_frame = jt->has_last_Java_frame();
 272     if (!has_last_Java_frame)
 273       jt->set_last_Java_frame();
 274     st->print("Java frames:");
 275 
 276     // If the top frame is a Shark frame and the frame anchor isn't
 277     // set up then it's possible that the information in the frame
 278     // is garbage: it could be from a previous decache, or it could
 279     // simply have never been written.  So we print a warning...
 280     StackFrameStream sfs(jt);
 281     if (!has_last_Java_frame && !sfs.is_done()) {
 282       if (sfs.current()->zeroframe()->is_shark_frame()) {
 283         st->print(" (TOP FRAME MAY BE JUNK)");
 284       }
 285     }
 286     st->cr();
 287 
 288     // Print the frames
 289     for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
 290       sfs.current()->zero_print_on_error(i, st, buf, buflen);
 291       st->cr();
 292     }
 293 
 294     // Reset the frame anchor if necessary
 295     if (!has_last_Java_frame)
 296       jt->reset_last_Java_frame();
 297   }
 298 #else
 299   if (jt->has_last_Java_frame()) {
 300     st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
 301     for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
 302       sfs.current()->print_on_error(st, buf, buflen, verbose);
 303       st->cr();
 304     }
 305   }
 306 #endif // ZERO
 307 }
 308 
 309 // This is the main function to report a fatal error. Only one thread can
 310 // call this function, so we don't need to worry about MT-safety. But it's
 311 // possible that the error handler itself may crash or die on an internal
 312 // error, for example, when the stack/heap is badly damaged. We must be
 313 // able to handle recursive errors that happen inside error handler.
 314 //
 315 // Error reporting is done in several steps. If a crash or internal error
 316 // occurred when reporting an error, the nested signal/exception handler
 317 // can skip steps that are already (or partially) done. Error reporting will
 318 // continue from the next step. This allows us to retrieve and print
 319 // information that may be unsafe to get after a fatal error. If it happens,
 320 // you may find nested report_and_die() frames when you look at the stack
 321 // in a debugger.
 322 //
 323 // In general, a hang in error handler is much worse than a crash or internal
 324 // error, as it's harder to recover from a hang. Deadlock can happen if we
 325 // try to grab a lock that is already owned by current thread, or if the
 326 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
 327 // error handler and all the functions it called should avoid grabbing any
 328 // lock. An important thing to notice is that memory allocation needs a lock.
 329 //
 330 // We should avoid using large stack allocated buffers. Many errors happen
 331 // when stack space is already low. Making things even worse is that there
 332 // could be nested report_and_die() calls on stack (see above). Only one
 333 // thread can report error, so large buffers are statically allocated in data
 334 // segment.
 335 
 336 void VMError::report(outputStream* st) {
 337 # define BEGIN if (_current_step == 0) { _current_step = 1;
 338 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
 339 # define END }
 340 
 341   // don't allocate large buffer on stack
 342   static char buf[O_BUFLEN];
 343 
 344   BEGIN
 345 
 346   STEP(10, "(printing fatal error message)")
 347 
 348     st->print_cr("#");
 349     if (should_report_bug(_id)) {
 350       st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
 351     } else {
 352       st->print_cr("# There is insufficient memory for the Java "
 353                    "Runtime Environment to continue.");
 354     }
 355 




















 356   STEP(15, "(printing type of error)")
 357 
 358      switch(_id) {
 359        case OOM_MALLOC_ERROR:
 360        case OOM_MMAP_ERROR:
 361          if (_size) {
 362            st->print("# Native memory allocation ");
 363            st->print((_id == (int)OOM_MALLOC_ERROR) ? "(malloc) failed to allocate " :
 364                                                  "(mmap) failed to map ");
 365            jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
 366            st->print("%s", buf);
 367            st->print(" bytes");
 368            if (_message != NULL) {
 369              st->print(" for ");
 370              st->print("%s", _message);
 371            }
 372            st->cr();
 373          } else {
 374            if (_message != NULL)
 375              st->print("# ");
 376              st->print_cr("%s", _message);
 377          }
 378          // In error file give some solutions
 379          if (_verbose) {
 380            st->print_cr("# Possible reasons:");
 381            st->print_cr("#   The system is out of physical RAM or swap space");
 382            st->print_cr("#   In 32 bit mode, the process size limit was hit");
 383            st->print_cr("# Possible solutions:");
 384            st->print_cr("#   Reduce memory load on the system");
 385            st->print_cr("#   Increase physical memory or swap space");
 386            st->print_cr("#   Check if swap backing store is full");
 387            st->print_cr("#   Use 64 bit Java on a 64 bit OS");
 388            st->print_cr("#   Decrease Java heap size (-Xmx/-Xms)");
 389            st->print_cr("#   Decrease number of Java threads");
 390            st->print_cr("#   Decrease Java thread stack sizes (-Xss)");
 391            st->print_cr("#   Set larger code cache with -XX:ReservedCodeCacheSize=");
 392            st->print_cr("# This output file may be truncated or incomplete.");
 393          } else {
 394            return;  // that's enough for the screen
 395          }
 396          break;
 397        case INTERNAL_ERROR:
 398        default:
 399          break;
 400      }
 401 
 402   STEP(20, "(printing exception/signal name)")
 403 
 404      st->print_cr("#");
 405      st->print("#  ");
 406      // Is it an OS exception/signal?
 407      if (os::exception_name(_id, buf, sizeof(buf))) {
 408        st->print("%s", buf);
 409        st->print(" (0x%x)", _id);                // signal number
 410        st->print(" at pc=" PTR_FORMAT, _pc);
 411      } else {
 412        if (should_report_bug(_id)) {
 413          st->print("Internal Error");
 414        } else {
 415          st->print("Out of Memory Error");
 416        }
 417        if (_filename != NULL && _lineno > 0) {
 418 #ifdef PRODUCT
 419          // In product mode chop off pathname?
 420          char separator = os::file_separator()[0];
 421          const char *p = strrchr(_filename, separator);
 422          const char *file = p ? p+1 : _filename;
 423 #else
 424          const char *file = _filename;
 425 #endif
 426          size_t len = strlen(file);
 427          size_t buflen = sizeof(buf);
 428 
 429          strncpy(buf, file, buflen);
 430          if (len + 10 < buflen) {
 431            sprintf(buf + len, ":%d", _lineno);
 432          }
 433          st->print(" (%s)", buf);
 434        } else {
 435          st->print(" (0x%x)", _id);
 436        }
 437      }
 438 
 439   STEP(30, "(printing current thread and pid)")
 440 
 441      // process id, thread id
 442      st->print(", pid=%d", os::current_process_id());
 443      st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
 444      st->cr();
 445 
 446   STEP(40, "(printing error message)")
 447 
 448      if (should_report_bug(_id)) {  // already printed the message.
 449        // error message
 450        if (_detail_msg) {
 451          st->print_cr("#  %s: %s", _message ? _message : "Error", _detail_msg);
 452        } else if (_message) {
 453          st->print_cr("#  Error: %s", _message);
 454        }
 455     }
 456 
 457   STEP(50, "(printing Java version string)")
 458 
 459      // VM version
 460      st->print_cr("#");
 461      JDK_Version::current().to_string(buf, sizeof(buf));
 462      const char* runtime_name = JDK_Version::runtime_name() != NULL ?
 463                                   JDK_Version::runtime_name() : "";
 464      const char* runtime_version = JDK_Version::runtime_version() != NULL ?
 465                                   JDK_Version::runtime_version() : "";
 466      st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version);
 467      st->print_cr("# Java VM: %s (%s %s %s %s)",
 468                    Abstract_VM_Version::vm_name(),
 469                    Abstract_VM_Version::vm_release(),
 470                    Abstract_VM_Version::vm_info_string(),
 471                    Abstract_VM_Version::vm_platform_string(),
 472                    UseCompressedOops ? "compressed oops" : ""
 473                  );
 474 
 475   STEP(60, "(printing problematic frame)")
 476 
 477      // Print current frame if we have a context (i.e. it's a crash)
 478      if (_context) {
 479        st->print_cr("# Problematic frame:");
 480        st->print("# ");
 481        frame fr = os::fetch_frame_from_context(_context);
 482        fr.print_on_error(st, buf, sizeof(buf));
 483        st->cr();
 484        st->print_cr("#");
 485      }
 486   STEP(63, "(printing core file information)")
 487     st->print("# ");
 488     if (coredump_status) {
 489       st->print("Core dump written. Default location: %s", coredump_message);
 490     } else {
 491       st->print("Failed to write core dump. %s", coredump_message);
 492     }
 493     st->cr();
 494     st->print_cr("#");
 495 
 496   STEP(65, "(printing bug submit message)")
 497 
 498      if (should_report_bug(_id) && _verbose) {
 499        print_bug_submit_message(st, _thread);
 500      }
 501 
 502   STEP(70, "(printing thread)" )
 503 
 504      if (_verbose) {
 505        st->cr();
 506        st->print_cr("---------------  T H R E A D  ---------------");
 507        st->cr();
 508      }
 509 
 510   STEP(80, "(printing current thread)" )
 511 
 512      // current thread
 513      if (_verbose) {
 514        if (_thread) {
 515          st->print("Current thread (" PTR_FORMAT "):  ", _thread);
 516          _thread->print_on_error(st, buf, sizeof(buf));
 517          st->cr();
 518        } else {
 519          st->print_cr("Current thread is native thread");
 520        }
 521        st->cr();
 522      }
 523 
 524   STEP(90, "(printing siginfo)" )
 525 
 526      // signal no, signal code, address that caused the fault
 527      if (_verbose && _siginfo) {
 528        os::print_siginfo(st, _siginfo);
 529        st->cr();
 530      }
 531 
 532   STEP(100, "(printing registers, top of stack, instructions near pc)")
 533 
 534      // registers, top of stack, instructions near pc
 535      if (_verbose && _context) {
 536        os::print_context(st, _context);
 537        st->cr();
 538      }
 539 
 540   STEP(105, "(printing register info)")
 541 
 542      // decode register contents if possible
 543      if (_verbose && _context && Universe::is_fully_initialized()) {
 544        os::print_register_info(st, _context);
 545        st->cr();
 546      }
 547 
 548   STEP(110, "(printing stack bounds)" )
 549 
 550      if (_verbose) {
 551        st->print("Stack: ");
 552 
 553        address stack_top;
 554        size_t stack_size;
 555 
 556        if (_thread) {
 557           stack_top = _thread->stack_base();
 558           stack_size = _thread->stack_size();
 559        } else {
 560           stack_top = os::current_stack_base();
 561           stack_size = os::current_stack_size();
 562        }
 563 
 564        address stack_bottom = stack_top - stack_size;
 565        st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
 566 
 567        frame fr = _context ? os::fetch_frame_from_context(_context)
 568                            : os::current_frame();
 569 
 570        if (fr.sp()) {
 571          st->print(",  sp=" PTR_FORMAT, fr.sp());
 572          size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
 573          st->print(",  free space=" SIZE_FORMAT "k", free_stack_size);
 574        }
 575 
 576        st->cr();
 577      }
 578 
 579   STEP(120, "(printing native stack)" )
 580 
 581    if (_verbose) {
 582      if (os::platform_print_native_stack(st, _context, buf, sizeof(buf))) {
 583        // We have printed the native stack in platform-specific code
 584        // Windows/x64 needs special handling.
 585      } else {
 586        frame fr = _context ? os::fetch_frame_from_context(_context)
 587                            : os::current_frame();
 588 
 589        print_native_stack(st, fr, _thread, buf, sizeof(buf));
 590      }
 591    }
 592 
 593   STEP(130, "(printing Java stack)" )
 594 
 595      if (_verbose && _thread && _thread->is_Java_thread()) {
 596        print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
 597      }
 598 
 599   STEP(135, "(printing target Java thread stack)" )
 600 
 601      // printing Java thread stack trace if it is involved in GC crash
 602      if (_verbose && _thread && (_thread->is_Named_thread())) {
 603        JavaThread*  jt = ((NamedThread *)_thread)->processed_thread();
 604        if (jt != NULL) {
 605          st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
 606          print_stack_trace(st, jt, buf, sizeof(buf), true);
 607        }
 608      }
 609 
 610   STEP(140, "(printing VM operation)" )
 611 
 612      if (_verbose && _thread && _thread->is_VM_thread()) {
 613         VMThread* t = (VMThread*)_thread;
 614         VM_Operation* op = t->vm_operation();
 615         if (op) {
 616           op->print_on_error(st);
 617           st->cr();
 618           st->cr();
 619         }
 620      }
 621 
 622   STEP(150, "(printing current compile task)" )
 623 
 624      if (_verbose && _thread && _thread->is_Compiler_thread()) {
 625         CompilerThread* t = (CompilerThread*)_thread;
 626         if (t->task()) {
 627            st->cr();
 628            st->print_cr("Current CompileTask:");
 629            t->task()->print_line_on_error(st, buf, sizeof(buf));
 630            st->cr();
 631         }
 632      }
 633 
 634   STEP(160, "(printing process)" )
 635 
 636      if (_verbose) {
 637        st->cr();
 638        st->print_cr("---------------  P R O C E S S  ---------------");
 639        st->cr();
 640      }
 641 
 642   STEP(170, "(printing all threads)" )
 643 
 644      // all threads
 645      if (_verbose && _thread) {
 646        Threads::print_on_error(st, _thread, buf, sizeof(buf));
 647        st->cr();
 648      }
 649 
 650   STEP(175, "(printing VM state)" )
 651 
 652      if (_verbose) {
 653        // Safepoint state
 654        st->print("VM state:");
 655 
 656        if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
 657        else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
 658        else st->print("not at safepoint");
 659 
 660        // Also see if error occurred during initialization or shutdown
 661        if (!Universe::is_fully_initialized()) {
 662          st->print(" (not fully initialized)");
 663        } else if (VM_Exit::vm_exited()) {
 664          st->print(" (shutting down)");
 665        } else {
 666          st->print(" (normal execution)");
 667        }
 668        st->cr();
 669        st->cr();
 670      }
 671 
 672   STEP(180, "(printing owned locks on error)" )
 673 
 674      // mutexes/monitors that currently have an owner
 675      if (_verbose) {
 676        print_owned_locks_on_error(st);
 677        st->cr();
 678      }
 679 
 680   STEP(190, "(printing heap information)" )
 681 
 682      if (_verbose && Universe::is_fully_initialized()) {
 683        Universe::heap()->print_on_error(st);
 684        st->cr();
 685 
 686        st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
 687        st->cr();
 688      }
 689 
 690   STEP(195, "(printing code cache information)" )
 691 
 692      if (_verbose && Universe::is_fully_initialized()) {
 693        // print code cache information before vm abort
 694        CodeCache::print_summary(st);
 695        st->cr();
 696      }
 697 
 698   STEP(200, "(printing ring buffers)" )
 699 
 700      if (_verbose) {
 701        Events::print_all(st);
 702        st->cr();
 703      }
 704 
 705   STEP(205, "(printing dynamic libraries)" )
 706 
 707      if (_verbose) {
 708        // dynamic libraries, or memory map
 709        os::print_dll_info(st);
 710        st->cr();
 711      }
 712 
 713   STEP(210, "(printing VM options)" )
 714 
 715      if (_verbose) {
 716        // VM options
 717        Arguments::print_on(st);
 718        st->cr();
 719      }
 720 
 721   STEP(215, "(printing warning if internal testing API used)" )
 722 
 723      if (WhiteBox::used()) {
 724        st->print_cr("Unsupported internal testing APIs have been used.");
 725        st->cr();
 726      }
 727 
 728   STEP(220, "(printing environment variables)" )
 729 
 730      if (_verbose) {
 731        os::print_environment_variables(st, env_list, buf, sizeof(buf));
 732        st->cr();
 733      }
 734 
 735   STEP(225, "(printing signal handlers)" )
 736 
 737      if (_verbose) {
 738        os::print_signal_handlers(st, buf, sizeof(buf));
 739        st->cr();
 740      }
 741 
 742   STEP(228, "(Native Memory Tracking)" )
 743      if (_verbose) {
 744        MemTracker::error_report(st);
 745      }
 746 
 747   STEP(230, "" )
 748 
 749      if (_verbose) {
 750        st->cr();
 751        st->print_cr("---------------  S Y S T E M  ---------------");
 752        st->cr();
 753      }
 754 
 755   STEP(240, "(printing OS information)" )
 756 
 757      if (_verbose) {
 758        os::print_os_info(st);
 759        st->cr();
 760      }
 761 
 762   STEP(250, "(printing CPU info)" )
 763      if (_verbose) {
 764        os::print_cpu_info(st);
 765        st->cr();
 766      }
 767 
 768   STEP(260, "(printing memory info)" )
 769 
 770      if (_verbose) {
 771        os::print_memory_info(st);
 772        st->cr();
 773      }
 774 
 775   STEP(270, "(printing internal vm info)" )
 776 
 777      if (_verbose) {
 778        st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
 779        st->cr();
 780      }
 781 
 782   STEP(280, "(printing date and time)" )
 783 
 784      if (_verbose) {
 785        os::print_date_and_time(st);
 786        st->cr();
 787      }
 788 









 789   END
 790 
 791 # undef BEGIN
 792 # undef STEP
 793 # undef END
 794 }
 795 
 796 VMError* volatile VMError::first_error = NULL;
 797 volatile jlong VMError::first_error_tid = -1;
 798 
 799 // An error could happen before tty is initialized or after it has been
 800 // destroyed. Here we use a very simple unbuffered fdStream for printing.
 801 // Only out.print_raw() and out.print_raw_cr() should be used, as other
 802 // printing methods need to allocate large buffer on stack. To format a
 803 // string, use jio_snprintf() with a static buffer or use staticBufferStream.
 804 fdStream VMError::out(defaultStream::output_fd());
 805 fdStream VMError::log; // error log used by VMError::report_and_die()
 806 
 807 /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
 808 static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
 809   int fd = -1;
 810   if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
 811     // the O_EXCL flag will cause the open to fail if the file exists
 812     fd = open(buf, O_RDWR | O_CREAT | O_EXCL, 0666);
 813   }
 814   return fd;
 815 }
 816 
 817 /**
 818  * Construct file name for a log file and return it's file descriptor.
 819  * Name and location depends on pattern, default_pattern params and access
 820  * permissions.
 821  */
 822 static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
 823   int fd = -1;
 824 
 825   // If possible, use specified pattern to construct log file name
 826   if (pattern != NULL) {
 827     fd = expand_and_open(pattern, buf, buflen, 0);
 828   }
 829 
 830   // Either user didn't specify, or the user's location failed,
 831   // so use the default name in the current directory
 832   if (fd == -1) {
 833     const char* cwd = os::get_current_directory(buf, buflen);
 834     if (cwd != NULL) {
 835       size_t pos = strlen(cwd);
 836       int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
 837       pos += fsep_len;
 838       if (fsep_len > 0) {
 839         fd = expand_and_open(default_pattern, buf, buflen, pos);
 840       }
 841     }
 842   }
 843 
 844    // try temp directory if it exists.
 845    if (fd == -1) {
 846      const char* tmpdir = os::get_temp_directory();
 847      if (tmpdir != NULL && strlen(tmpdir) > 0) {
 848        int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
 849        if (pos > 0) {
 850          fd = expand_and_open(default_pattern, buf, buflen, pos);
 851        }
 852      }
 853    }
 854 
 855   return fd;
 856 }
 857 
 858 void VMError::report_and_die() {
 859   // Don't allocate large buffer on stack
 860   static char buffer[O_BUFLEN];
 861 
 862   // How many errors occurred in error handler when reporting first_error.
 863   static int recursive_error_count;
 864 
 865   // We will first print a brief message to standard out (verbose = false),
 866   // then save detailed information in log file (verbose = true).
 867   static bool out_done = false;         // done printing to standard out
 868   static bool log_done = false;         // done saving error log
 869   static bool transmit_report_done = false; // done error reporting
 870 
 871   if (SuppressFatalErrorMessage) {
 872       os::abort();
 873   }
 874   jlong mytid = os::current_thread_id();
 875   if (first_error == NULL &&
 876       Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
 877 
 878     // first time
 879     first_error_tid = mytid;
 880     set_error_reported();
 881 
 882     if (ShowMessageBoxOnError || PauseAtExit) {
 883       show_message_box(buffer, sizeof(buffer));
 884 
 885       // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
 886       // WatcherThread can kill JVM if the error handler hangs.
 887       ShowMessageBoxOnError = false;
 888     }
 889 
 890     // Write a minidump on Windows, check core dump limits on Linux/Solaris
 891     os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer));
 892 
 893     // reset signal handlers or exception filter; make sure recursive crashes
 894     // are handled properly.
 895     reset_signal_handlers();
 896 
 897   } else {
 898     // If UseOsErrorReporting we call this for each level of the call stack
 899     // while searching for the exception handler.  Only the first level needs
 900     // to be reported.
 901     if (UseOSErrorReporting && log_done) return;
 902 
 903     // This is not the first error, see if it happened in a different thread
 904     // or in the same thread during error reporting.
 905     if (first_error_tid != mytid) {
 906       char msgbuf[64];
 907       jio_snprintf(msgbuf, sizeof(msgbuf),
 908                    "[thread " INT64_FORMAT " also had an error]",
 909                    mytid);
 910       out.print_raw_cr(msgbuf);
 911 
 912       // error reporting is not MT-safe, block current thread
 913       os::infinite_sleep();
 914 
 915     } else {
 916       if (recursive_error_count++ > 30) {
 917         out.print_raw_cr("[Too many errors, abort]");
 918         os::die();
 919       }
 920 
 921       jio_snprintf(buffer, sizeof(buffer),
 922                    "[error occurred during error reporting %s, id 0x%x]",
 923                    first_error ? first_error->_current_step_info : "",
 924                    _id);
 925       if (log.is_open()) {
 926         log.cr();
 927         log.print_raw_cr(buffer);
 928         log.cr();
 929       } else {
 930         out.cr();
 931         out.print_raw_cr(buffer);
 932         out.cr();
 933       }
 934     }
 935   }
 936 
 937   // print to screen
 938   if (!out_done) {
 939     first_error->_verbose = false;
 940 
 941     staticBufferStream sbs(buffer, sizeof(buffer), &out);
 942     first_error->report(&sbs);
 943 
 944     out_done = true;
 945 
 946     first_error->_current_step = 0;         // reset current_step
 947     first_error->_current_step_info = "";   // reset current_step string
 948   }
 949 
 950   // print to error log file
 951   if (!log_done) {
 952     first_error->_verbose = true;
 953 
 954     // see if log file is already open
 955     if (!log.is_open()) {
 956       // open log file
 957       int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
 958       if (fd != -1) {
 959         out.print_raw("# An error report file with more information is saved as:\n# ");
 960         out.print_raw_cr(buffer);
 961 
 962         log.set_fd(fd);
 963       } else {
 964         out.print_raw_cr("# Can not save log file, dump to screen..");
 965         log.set_fd(defaultStream::output_fd());
 966         /* Error reporting currently needs dumpfile.
 967          * Maybe implement direct streaming in the future.*/
 968         transmit_report_done = true;
 969       }
 970     }
 971 
 972     staticBufferStream sbs(buffer, O_BUFLEN, &log);
 973     first_error->report(&sbs);
 974     first_error->_current_step = 0;         // reset current_step
 975     first_error->_current_step_info = "";   // reset current_step string
 976 
 977     // Run error reporting to determine whether or not to report the crash.
 978     if (!transmit_report_done && should_report_bug(first_error->_id)) {
 979       transmit_report_done = true;
 980       const int fd2 = ::dup(log.fd());
 981       FILE* const hs_err = ::fdopen(fd2, "r");
 982       if (NULL != hs_err) {
 983         ErrorReporter er;
 984         er.call(hs_err, buffer, O_BUFLEN);
 985       }
 986       ::fclose(hs_err);
 987     }
 988 
 989     if (log.fd() != defaultStream::output_fd()) {
 990       close(log.fd());
 991     }
 992 
 993     log.set_fd(-1);
 994     log_done = true;
 995   }
 996 
 997 
 998   static bool skip_OnError = false;
 999   if (!skip_OnError && OnError && OnError[0]) {
1000     skip_OnError = true;
1001 
1002     out.print_raw_cr("#");
1003     out.print_raw   ("# -XX:OnError=\"");
1004     out.print_raw   (OnError);
1005     out.print_raw_cr("\"");
1006 
1007     char* cmd;
1008     const char* ptr = OnError;
1009     while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1010       out.print_raw   ("#   Executing ");
1011 #if defined(LINUX) || defined(_ALLBSD_SOURCE)
1012       out.print_raw   ("/bin/sh -c ");
1013 #elif defined(SOLARIS)
1014       out.print_raw   ("/usr/bin/sh -c ");
1015 #endif
1016       out.print_raw   ("\"");
1017       out.print_raw   (cmd);
1018       out.print_raw_cr("\" ...");
1019 
1020       os::fork_and_exec(cmd);
1021     }
1022 
1023     // done with OnError
1024     OnError = NULL;
1025   }
1026 
1027   static bool skip_replay = ReplayCompiles; // Do not overwrite file during replay
1028   if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
1029     skip_replay = true;
1030     ciEnv* env = ciEnv::current();
1031     if (env != NULL) {
1032       int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
1033       if (fd != -1) {
1034         FILE* replay_data_file = os::open(fd, "w");
1035         if (replay_data_file != NULL) {
1036           fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1037           env->dump_replay_data_unsafe(&replay_data_stream);
1038           out.print_raw("#\n# Compiler replay data is saved as:\n# ");
1039           out.print_raw_cr(buffer);
1040         } else {
1041           out.print_raw("#\n# Can't open file to dump replay data. Error: ");
1042           out.print_raw_cr(strerror(os::get_last_error()));
1043         }
1044       }
1045     }
1046   }
1047 
1048   static bool skip_bug_url = !should_report_bug(first_error->_id);
1049   if (!skip_bug_url) {
1050     skip_bug_url = true;
1051 
1052     out.print_raw_cr("#");
1053     print_bug_submit_message(&out, _thread);
1054   }
1055 
1056   if (!UseOSErrorReporting) {
1057     // os::abort() will call abort hooks, try it first.
1058     static bool skip_os_abort = false;
1059     if (!skip_os_abort) {
1060       skip_os_abort = true;
1061       bool dump_core = should_report_bug(first_error->_id);
1062       os::abort(dump_core);
1063     }
1064 
1065     // if os::abort() doesn't abort, try os::die();
1066     os::die();
1067   }
1068 }
1069 
1070 /*
1071  * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
1072  * ensures utilities such as jmap can observe the process is a consistent state.
1073  */
1074 class VM_ReportJavaOutOfMemory : public VM_Operation {
1075  private:
1076   VMError *_err;
1077  public:
1078   VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
1079   VMOp_Type type() const                 { return VMOp_ReportJavaOutOfMemory; }
1080   void doit();
1081 };
1082 
1083 void VM_ReportJavaOutOfMemory::doit() {
1084   // Don't allocate large buffer on stack
1085   static char buffer[O_BUFLEN];
1086 
1087   tty->print_cr("#");
1088   tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
1089   tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
1090 
1091   // make heap parsability
1092   Universe::heap()->ensure_parsability(false);  // no need to retire TLABs
1093 
1094   char* cmd;
1095   const char* ptr = OnOutOfMemoryError;
1096   while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
1097     tty->print("#   Executing ");
1098 #if defined(LINUX)
1099     tty->print  ("/bin/sh -c ");
1100 #elif defined(SOLARIS)
1101     tty->print  ("/usr/bin/sh -c ");
1102 #endif
1103     tty->print_cr("\"%s\"...", cmd);
1104 
1105     os::fork_and_exec(cmd);
1106   }
1107 }
1108 
1109 void VMError::report_java_out_of_memory() {
1110   if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
1111     MutexLocker ml(Heap_lock);
1112     VM_ReportJavaOutOfMemory op(this);
1113     VMThread::execute(&op);
1114   }
1115 }
--- EOF ---