duke@435: /*
never@3499:  * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "compiler/compileBroker.hpp"
stefank@2314: #include "gc_interface/collectedHeap.hpp"
mgerdin@3619: #include "prims/whitebox.hpp"
stefank@2314: #include "runtime/arguments.hpp"
stefank@2314: #include "runtime/frame.inline.hpp"
stefank@2314: #include "runtime/init.hpp"
stefank@2314: #include "runtime/os.hpp"
stefank@2314: #include "runtime/thread.hpp"
stefank@2314: #include "runtime/vmThread.hpp"
stefank@2314: #include "runtime/vm_operations.hpp"
zgu@3900: #include "services/memTracker.hpp"
stefank@2314: #include "utilities/debug.hpp"
zgu@2364: #include "utilities/decoder.hpp"
stefank@2314: #include "utilities/defaultStream.hpp"
kamg@2515: #include "utilities/errorReporter.hpp"
never@3499: #include "utilities/events.hpp"
stefank@2314: #include "utilities/top.hpp"
stefank@2314: #include "utilities/vmError.hpp"
duke@435: 
duke@435: // List of environment variables that should be reported in error log file.
duke@435: const char *env_list[] = {
duke@435:   // All platforms
duke@435:   "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
duke@435:   "JAVA_COMPILER", "PATH", "USERNAME",
duke@435: 
never@3156:   // Env variables that are defined on Solaris/Linux/BSD
duke@435:   "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
duke@435:   "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
duke@435: 
duke@435:   // defined on Linux
duke@435:   "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
duke@435: 
never@3156:   // defined on Darwin
never@3156:   "DYLD_LIBRARY_PATH", "DYLD_FALLBACK_LIBRARY_PATH",
never@3156:   "DYLD_FRAMEWORK_PATH", "DYLD_FALLBACK_FRAMEWORK_PATH",
never@3156:   "DYLD_INSERT_LIBRARIES",
never@3156: 
duke@435:   // defined on Windows
duke@435:   "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
duke@435: 
duke@435:   (const char *)0
duke@435: };
duke@435: 
duke@435: // Fatal error handler for internal errors and crashes.
duke@435: //
duke@435: // The default behavior of fatal error handler is to print a brief message
duke@435: // to standard out (defaultStream::output_fd()), then save detailed information
duke@435: // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
duke@435: // threads are having troubles at the same time, only one error is reported.
duke@435: // The thread that is reporting error will abort VM when it is done, all other
duke@435: // threads are blocked forever inside report_and_die().
duke@435: 
duke@435: // Constructor for crashes
coleenp@2418: VMError::VMError(Thread* thread, unsigned int sig, address pc, void* siginfo, void* context) {
duke@435:     _thread = thread;
duke@435:     _id = sig;
duke@435:     _pc   = pc;
duke@435:     _siginfo = siginfo;
duke@435:     _context = context;
duke@435: 
duke@435:     _verbose = false;
duke@435:     _current_step = 0;
duke@435:     _current_step_info = NULL;
duke@435: 
jcoomes@1845:     _message = NULL;
jcoomes@1845:     _detail_msg = NULL;
duke@435:     _filename = NULL;
duke@435:     _lineno = 0;
duke@435: 
duke@435:     _size = 0;
duke@435: }
duke@435: 
duke@435: // Constructor for internal errors
jcoomes@1845: VMError::VMError(Thread* thread, const char* filename, int lineno,
jcoomes@1845:                  const char* message, const char * detail_msg)
jcoomes@1845: {
jcoomes@1845:   _thread = thread;
jcoomes@1845:   _id = internal_error;     // Value that's not an OS exception/signal
jcoomes@1845:   _filename = filename;
jcoomes@1845:   _lineno = lineno;
jcoomes@1845:   _message = message;
jcoomes@1845:   _detail_msg = detail_msg;
jcoomes@1845: 
jcoomes@1845:   _verbose = false;
jcoomes@1845:   _current_step = 0;
jcoomes@1845:   _current_step_info = NULL;
jcoomes@1845: 
jcoomes@1845:   _pc = NULL;
jcoomes@1845:   _siginfo = NULL;
jcoomes@1845:   _context = NULL;
jcoomes@1845: 
jcoomes@1845:   _size = 0;
jcoomes@1845: }
jcoomes@1845: 
jcoomes@1845: // Constructor for OOM errors
jcoomes@1845: VMError::VMError(Thread* thread, const char* filename, int lineno, size_t size,
jcoomes@1845:                  const char* message) {
duke@435:     _thread = thread;
jcoomes@1845:     _id = oom_error;     // Value that's not an OS exception/signal
duke@435:     _filename = filename;
duke@435:     _lineno = lineno;
duke@435:     _message = message;
jcoomes@1845:     _detail_msg = NULL;
duke@435: 
duke@435:     _verbose = false;
duke@435:     _current_step = 0;
duke@435:     _current_step_info = NULL;
duke@435: 
duke@435:     _pc = NULL;
duke@435:     _siginfo = NULL;
duke@435:     _context = NULL;
duke@435: 
duke@435:     _size = size;
duke@435: }
duke@435: 
duke@435: 
duke@435: // Constructor for non-fatal errors
duke@435: VMError::VMError(const char* message) {
duke@435:     _thread = NULL;
jcoomes@1845:     _id = internal_error;     // Value that's not an OS exception/signal
duke@435:     _filename = NULL;
duke@435:     _lineno = 0;
duke@435:     _message = message;
jcoomes@1845:     _detail_msg = NULL;
duke@435: 
duke@435:     _verbose = false;
duke@435:     _current_step = 0;
duke@435:     _current_step_info = NULL;
duke@435: 
duke@435:     _pc = NULL;
duke@435:     _siginfo = NULL;
duke@435:     _context = NULL;
duke@435: 
duke@435:     _size = 0;
duke@435: }
duke@435: 
duke@435: // -XX:OnError=<string>, where <string> can be a list of commands, separated
duke@435: // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
duke@435: // a single "%". Some examples:
duke@435: //
duke@435: // -XX:OnError="pmap %p"                // show memory map
duke@435: // -XX:OnError="gcore %p; dbx - %p"     // dump core and launch debugger
duke@435: // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
duke@435: // -XX:OnError="kill -9 %p"             // ?#!@#
duke@435: 
duke@435: // A simple parser for -XX:OnError, usage:
duke@435: //  ptr = OnError;
duke@435: //  while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
duke@435: //     ... ...
duke@435: static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
duke@435:   if (ptr == NULL || *ptr == NULL) return NULL;
duke@435: 
duke@435:   const char* cmd = *ptr;
duke@435: 
duke@435:   // skip leading blanks or ';'
duke@435:   while (*cmd == ' ' || *cmd == ';') cmd++;
duke@435: 
duke@435:   if (*cmd == '\0') return NULL;
duke@435: 
duke@435:   const char * cmdend = cmd;
duke@435:   while (*cmdend != '\0' && *cmdend != ';') cmdend++;
duke@435: 
duke@435:   Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
duke@435: 
duke@435:   *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
duke@435:   return buf;
duke@435: }
duke@435: 
duke@435: 
duke@435: static void print_bug_submit_message(outputStream *out, Thread *thread) {
duke@435:   if (out == NULL) return;
duke@435:   out->print_raw_cr("# If you would like to submit a bug report, please visit:");
duke@435:   out->print_raw   ("#   ");
duke@435:   out->print_raw_cr(Arguments::java_vendor_url_bug());
duke@435:   // If the crash is in native code, encourage user to submit a bug to the
duke@435:   // provider of that code.
coleenp@491:   if (thread && thread->is_Java_thread() &&
coleenp@491:       !thread->is_hidden_from_external_view()) {
duke@435:     JavaThread* jt = (JavaThread*)thread;
duke@435:     if (jt->thread_state() == _thread_in_native) {
duke@435:       out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
duke@435:     }
duke@435:   }
duke@435:   out->print_raw_cr("#");
duke@435: }
duke@435: 
ctornqvi@2520: bool VMError::coredump_status;
ctornqvi@2520: char VMError::coredump_message[O_BUFLEN];
ctornqvi@2520: 
ctornqvi@2520: void VMError::report_coredump_status(const char* message, bool status) {
ctornqvi@2520:   coredump_status = status;
ctornqvi@2520:   strncpy(coredump_message, message, sizeof(coredump_message));
ctornqvi@2520:   coredump_message[sizeof(coredump_message)-1] = 0;
ctornqvi@2520: }
ctornqvi@2520: 
duke@435: 
duke@435: // Return a string to describe the error
duke@435: char* VMError::error_string(char* buf, int buflen) {
duke@435:   char signame_buf[64];
duke@435:   const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
duke@435: 
duke@435:   if (signame) {
duke@435:     jio_snprintf(buf, buflen,
duke@435:                  "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
duke@435:                  signame, _id, _pc,
duke@435:                  os::current_process_id(), os::current_thread_id());
jcoomes@1845:   } else if (_filename != NULL && _lineno > 0) {
jcoomes@1845:     // skip directory names
jcoomes@1845:     char separator = os::file_separator()[0];
jcoomes@1845:     const char *p = strrchr(_filename, separator);
jcoomes@1845:     int n = jio_snprintf(buf, buflen,
jcoomes@1845:                          "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT,
jcoomes@1845:                          p ? p + 1 : _filename, _lineno,
jcoomes@1845:                          os::current_process_id(), os::current_thread_id());
jcoomes@1845:     if (n >= 0 && n < buflen && _message) {
jcoomes@1845:       if (_detail_msg) {
jcoomes@1845:         jio_snprintf(buf + n, buflen - n, "%s%s: %s",
jcoomes@1845:                      os::line_separator(), _message, _detail_msg);
jcoomes@1845:       } else {
jcoomes@1845:         jio_snprintf(buf + n, buflen - n, "%sError: %s",
jcoomes@1845:                      os::line_separator(), _message);
jcoomes@1845:       }
jcoomes@1845:     }
duke@435:   } else {
jcoomes@1845:     jio_snprintf(buf, buflen,
jcoomes@1845:                  "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
jcoomes@1845:                  _id, os::current_process_id(), os::current_thread_id());
duke@435:   }
duke@435: 
duke@435:   return buf;
duke@435: }
duke@435: 
twisti@1819: void VMError::print_stack_trace(outputStream* st, JavaThread* jt,
twisti@1819:                                 char* buf, int buflen, bool verbose) {
twisti@1819: #ifdef ZERO
twisti@1819:   if (jt->zero_stack()->sp() && jt->top_zero_frame()) {
twisti@1819:     // StackFrameStream uses the frame anchor, which may not have
twisti@1819:     // been set up.  This can be done at any time in Zero, however,
twisti@1819:     // so if it hasn't been set up then we just set it up now and
twisti@1819:     // clear it again when we're done.
twisti@1819:     bool has_last_Java_frame = jt->has_last_Java_frame();
twisti@1819:     if (!has_last_Java_frame)
twisti@1819:       jt->set_last_Java_frame();
twisti@1819:     st->print("Java frames:");
twisti@1819: 
twisti@1819:     // If the top frame is a Shark frame and the frame anchor isn't
twisti@1819:     // set up then it's possible that the information in the frame
twisti@1819:     // is garbage: it could be from a previous decache, or it could
twisti@1819:     // simply have never been written.  So we print a warning...
twisti@1819:     StackFrameStream sfs(jt);
twisti@1819:     if (!has_last_Java_frame && !sfs.is_done()) {
twisti@1819:       if (sfs.current()->zeroframe()->is_shark_frame()) {
twisti@1819:         st->print(" (TOP FRAME MAY BE JUNK)");
twisti@1819:       }
twisti@1819:     }
twisti@1819:     st->cr();
twisti@1819: 
twisti@1819:     // Print the frames
twisti@1819:     for(int i = 0; !sfs.is_done(); sfs.next(), i++) {
twisti@1819:       sfs.current()->zero_print_on_error(i, st, buf, buflen);
twisti@1819:       st->cr();
twisti@1819:     }
twisti@1819: 
twisti@1819:     // Reset the frame anchor if necessary
twisti@1819:     if (!has_last_Java_frame)
twisti@1819:       jt->reset_last_Java_frame();
twisti@1819:   }
twisti@1819: #else
twisti@1819:   if (jt->has_last_Java_frame()) {
twisti@1819:     st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
twisti@1819:     for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
twisti@1819:       sfs.current()->print_on_error(st, buf, buflen, verbose);
twisti@1819:       st->cr();
twisti@1819:     }
twisti@1819:   }
twisti@1819: #endif // ZERO
twisti@1819: }
duke@435: 
duke@435: // This is the main function to report a fatal error. Only one thread can
duke@435: // call this function, so we don't need to worry about MT-safety. But it's
duke@435: // possible that the error handler itself may crash or die on an internal
duke@435: // error, for example, when the stack/heap is badly damaged. We must be
duke@435: // able to handle recursive errors that happen inside error handler.
duke@435: //
duke@435: // Error reporting is done in several steps. If a crash or internal error
duke@435: // occurred when reporting an error, the nested signal/exception handler
duke@435: // can skip steps that are already (or partially) done. Error reporting will
duke@435: // continue from the next step. This allows us to retrieve and print
duke@435: // information that may be unsafe to get after a fatal error. If it happens,
duke@435: // you may find nested report_and_die() frames when you look at the stack
duke@435: // in a debugger.
duke@435: //
duke@435: // In general, a hang in error handler is much worse than a crash or internal
duke@435: // error, as it's harder to recover from a hang. Deadlock can happen if we
duke@435: // try to grab a lock that is already owned by current thread, or if the
duke@435: // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
duke@435: // error handler and all the functions it called should avoid grabbing any
duke@435: // lock. An important thing to notice is that memory allocation needs a lock.
duke@435: //
duke@435: // We should avoid using large stack allocated buffers. Many errors happen
duke@435: // when stack space is already low. Making things even worse is that there
duke@435: // could be nested report_and_die() calls on stack (see above). Only one
duke@435: // thread can report error, so large buffers are statically allocated in data
duke@435: // segment.
duke@435: 
duke@435: void VMError::report(outputStream* st) {
duke@435: # define BEGIN if (_current_step == 0) { _current_step = 1;
duke@435: # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
duke@435: # define END }
duke@435: 
duke@435:   // don't allocate large buffer on stack
duke@435:   static char buf[O_BUFLEN];
duke@435: 
duke@435:   BEGIN
duke@435: 
coleenp@491:   STEP(10, "(printing fatal error message)")
duke@435: 
coleenp@2418:     st->print_cr("#");
coleenp@2418:     if (should_report_bug(_id)) {
coleenp@2418:       st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
coleenp@2418:     } else {
coleenp@2418:       st->print_cr("# There is insufficient memory for the Java "
coleenp@2418:                    "Runtime Environment to continue.");
coleenp@2418:     }
duke@435: 
duke@435:   STEP(15, "(printing type of error)")
duke@435: 
duke@435:      switch(_id) {
duke@435:        case oom_error:
duke@435:          if (_size) {
coleenp@2418:            st->print("# Native memory allocation (malloc) failed to allocate ");
coleenp@2418:            jio_snprintf(buf, sizeof(buf), SIZE_FORMAT, _size);
duke@435:            st->print(buf);
duke@435:            st->print(" bytes");
duke@435:            if (_message != NULL) {
duke@435:              st->print(" for ");
duke@435:              st->print(_message);
duke@435:            }
coleenp@2418:            st->cr();
duke@435:          } else {
duke@435:            if (_message != NULL)
coleenp@2418:              st->print("# ");
duke@435:              st->print_cr(_message);
duke@435:          }
coleenp@2418:          // In error file give some solutions
coleenp@2418:          if (_verbose) {
coleenp@2418:            st->print_cr("# Possible reasons:");
coleenp@2418:            st->print_cr("#   The system is out of physical RAM or swap space");
coleenp@2418:            st->print_cr("#   In 32 bit mode, the process size limit was hit");
coleenp@2418:            st->print_cr("# Possible solutions:");
coleenp@2418:            st->print_cr("#   Reduce memory load on the system");
coleenp@2418:            st->print_cr("#   Increase physical memory or swap space");
coleenp@2418:            st->print_cr("#   Check if swap backing store is full");
coleenp@2418:            st->print_cr("#   Use 64 bit Java on a 64 bit OS");
coleenp@2418:            st->print_cr("#   Decrease Java heap size (-Xmx/-Xms)");
coleenp@2418:            st->print_cr("#   Decrease number of Java threads");
coleenp@2418:            st->print_cr("#   Decrease Java thread stack sizes (-Xss)");
coleenp@2418:            st->print_cr("#   Set larger code cache with -XX:ReservedCodeCacheSize=");
coleenp@2418:            st->print_cr("# This output file may be truncated or incomplete.");
coleenp@2418:          } else {
coleenp@2418:            return;  // that's enough for the screen
coleenp@2418:          }
duke@435:          break;
duke@435:        case internal_error:
duke@435:        default:
duke@435:          break;
duke@435:      }
duke@435: 
duke@435:   STEP(20, "(printing exception/signal name)")
duke@435: 
duke@435:      st->print_cr("#");
duke@435:      st->print("#  ");
duke@435:      // Is it an OS exception/signal?
duke@435:      if (os::exception_name(_id, buf, sizeof(buf))) {
duke@435:        st->print("%s", buf);
duke@435:        st->print(" (0x%x)", _id);                // signal number
duke@435:        st->print(" at pc=" PTR_FORMAT, _pc);
duke@435:      } else {
coleenp@2418:        if (should_report_bug(_id)) {
coleenp@2418:          st->print("Internal Error");
coleenp@2418:        } else {
coleenp@2418:          st->print("Out of Memory Error");
coleenp@2418:        }
duke@435:        if (_filename != NULL && _lineno > 0) {
duke@435: #ifdef PRODUCT
duke@435:          // In product mode chop off pathname?
duke@435:          char separator = os::file_separator()[0];
duke@435:          const char *p = strrchr(_filename, separator);
duke@435:          const char *file = p ? p+1 : _filename;
duke@435: #else
duke@435:          const char *file = _filename;
duke@435: #endif
duke@435:          size_t len = strlen(file);
duke@435:          size_t buflen = sizeof(buf);
duke@435: 
duke@435:          strncpy(buf, file, buflen);
duke@435:          if (len + 10 < buflen) {
twisti@1038:            sprintf(buf + len, ":%d", _lineno);
duke@435:          }
duke@435:          st->print(" (%s)", buf);
duke@435:        } else {
duke@435:          st->print(" (0x%x)", _id);
duke@435:        }
duke@435:      }
duke@435: 
duke@435:   STEP(30, "(printing current thread and pid)")
duke@435: 
duke@435:      // process id, thread id
duke@435:      st->print(", pid=%d", os::current_process_id());
duke@435:      st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
duke@435:      st->cr();
duke@435: 
duke@435:   STEP(40, "(printing error message)")
duke@435: 
coleenp@2418:      if (should_report_bug(_id)) {  // already printed the message.
coleenp@2418:        // error message
coleenp@2418:        if (_detail_msg) {
coleenp@2418:          st->print_cr("#  %s: %s", _message ? _message : "Error", _detail_msg);
coleenp@2418:        } else if (_message) {
coleenp@2418:          st->print_cr("#  Error: %s", _message);
coleenp@2418:        }
coleenp@2418:     }
duke@435: 
duke@435:   STEP(50, "(printing Java version string)")
duke@435: 
duke@435:      // VM version
duke@435:      st->print_cr("#");
coleenp@908:      JDK_Version::current().to_string(buf, sizeof(buf));
twisti@3884:      const char* runtime_name = JDK_Version::runtime_name() != NULL ?
twisti@3884:                                   JDK_Version::runtime_name() : "";
sla@4232:      const char* runtime_version = JDK_Version::runtime_version() != NULL ?
sla@4232:                                   JDK_Version::runtime_version() : "";
sla@4232:      st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version);
coleenp@548:      st->print_cr("# Java VM: %s (%s %s %s %s)",
duke@435:                    Abstract_VM_Version::vm_name(),
duke@435:                    Abstract_VM_Version::vm_release(),
duke@435:                    Abstract_VM_Version::vm_info_string(),
coleenp@548:                    Abstract_VM_Version::vm_platform_string(),
coleenp@548:                    UseCompressedOops ? "compressed oops" : ""
duke@435:                  );
duke@435: 
duke@435:   STEP(60, "(printing problematic frame)")
duke@435: 
duke@435:      // Print current frame if we have a context (i.e. it's a crash)
duke@435:      if (_context) {
duke@435:        st->print_cr("# Problematic frame:");
duke@435:        st->print("# ");
duke@435:        frame fr = os::fetch_frame_from_context(_context);
duke@435:        fr.print_on_error(st, buf, sizeof(buf));
duke@435:        st->cr();
duke@435:        st->print_cr("#");
duke@435:      }
ctornqvi@2520:   STEP(63, "(printing core file information)")
ctornqvi@2520:     st->print("# ");
ctornqvi@2520:     if (coredump_status) {
ctornqvi@2520:       st->print("Core dump written. Default location: %s", coredump_message);
ctornqvi@2520:     } else {
ctornqvi@2520:       st->print("Failed to write core dump. %s", coredump_message);
ctornqvi@2520:     }
ctornqvi@2520:     st->print_cr("");
ctornqvi@2520:     st->print_cr("#");
duke@435: 
duke@435:   STEP(65, "(printing bug submit message)")
duke@435: 
coleenp@2418:      if (should_report_bug(_id) && _verbose) {
coleenp@2418:        print_bug_submit_message(st, _thread);
coleenp@2418:      }
duke@435: 
duke@435:   STEP(70, "(printing thread)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        st->cr();
duke@435:        st->print_cr("---------------  T H R E A D  ---------------");
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(80, "(printing current thread)" )
duke@435: 
duke@435:      // current thread
duke@435:      if (_verbose) {
duke@435:        if (_thread) {
duke@435:          st->print("Current thread (" PTR_FORMAT "):  ", _thread);
duke@435:          _thread->print_on_error(st, buf, sizeof(buf));
duke@435:          st->cr();
duke@435:        } else {
duke@435:          st->print_cr("Current thread is native thread");
duke@435:        }
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(90, "(printing siginfo)" )
duke@435: 
duke@435:      // signal no, signal code, address that caused the fault
duke@435:      if (_verbose && _siginfo) {
duke@435:        os::print_siginfo(st, _siginfo);
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(100, "(printing registers, top of stack, instructions near pc)")
duke@435: 
duke@435:      // registers, top of stack, instructions near pc
duke@435:      if (_verbose && _context) {
duke@435:        os::print_context(st, _context);
duke@435:        st->cr();
duke@435:      }
duke@435: 
never@2262:   STEP(105, "(printing register info)")
never@2262: 
never@2262:      // decode register contents if possible
never@2262:      if (_verbose && _context && Universe::is_fully_initialized()) {
never@2262:        os::print_register_info(st, _context);
never@2262:        st->cr();
never@2262:      }
never@2262: 
duke@435:   STEP(110, "(printing stack bounds)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        st->print("Stack: ");
duke@435: 
duke@435:        address stack_top;
duke@435:        size_t stack_size;
duke@435: 
duke@435:        if (_thread) {
duke@435:           stack_top = _thread->stack_base();
duke@435:           stack_size = _thread->stack_size();
duke@435:        } else {
duke@435:           stack_top = os::current_stack_base();
duke@435:           stack_size = os::current_stack_size();
duke@435:        }
duke@435: 
duke@435:        address stack_bottom = stack_top - stack_size;
duke@435:        st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
duke@435: 
duke@435:        frame fr = _context ? os::fetch_frame_from_context(_context)
duke@435:                            : os::current_frame();
duke@435: 
duke@435:        if (fr.sp()) {
duke@435:          st->print(",  sp=" PTR_FORMAT, fr.sp());
kvn@2039:          size_t free_stack_size = pointer_delta(fr.sp(), stack_bottom, 1024);
kvn@2039:          st->print(",  free space=" SIZE_FORMAT "k", free_stack_size);
duke@435:        }
duke@435: 
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(120, "(printing native stack)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        frame fr = _context ? os::fetch_frame_from_context(_context)
duke@435:                            : os::current_frame();
duke@435: 
duke@435:        // see if it's a valid frame
duke@435:        if (fr.pc()) {
duke@435:           st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
duke@435: 
zgu@2364: 
duke@435:           int count = 0;
duke@435:           while (count++ < StackPrintLimit) {
duke@435:              fr.print_on_error(st, buf, sizeof(buf));
duke@435:              st->cr();
duke@435:              if (os::is_first_C_frame(&fr)) break;
duke@435:              fr = os::get_sender_for_C_frame(&fr);
duke@435:           }
duke@435: 
duke@435:           if (count > StackPrintLimit) {
duke@435:              st->print_cr("...<more frames>...");
duke@435:           }
duke@435: 
duke@435:           st->cr();
duke@435:        }
duke@435:      }
duke@435: 
duke@435:   STEP(130, "(printing Java stack)" )
duke@435: 
duke@435:      if (_verbose && _thread && _thread->is_Java_thread()) {
twisti@1819:        print_stack_trace(st, (JavaThread*)_thread, buf, sizeof(buf));
duke@435:      }
duke@435: 
minqi@1554:   STEP(135, "(printing target Java thread stack)" )
minqi@1554: 
minqi@1554:      // printing Java thread stack trace if it is involved in GC crash
never@2262:      if (_verbose && _thread && (_thread->is_Named_thread())) {
minqi@1554:        JavaThread*  jt = ((NamedThread *)_thread)->processed_thread();
minqi@1554:        if (jt != NULL) {
minqi@1554:          st->print_cr("JavaThread " PTR_FORMAT " (nid = " UINTX_FORMAT ") was being processed", jt, jt->osthread()->thread_id());
twisti@1819:          print_stack_trace(st, jt, buf, sizeof(buf), true);
minqi@1554:        }
minqi@1554:      }
minqi@1554: 
duke@435:   STEP(140, "(printing VM operation)" )
duke@435: 
duke@435:      if (_verbose && _thread && _thread->is_VM_thread()) {
duke@435:         VMThread* t = (VMThread*)_thread;
duke@435:         VM_Operation* op = t->vm_operation();
duke@435:         if (op) {
duke@435:           op->print_on_error(st);
duke@435:           st->cr();
duke@435:           st->cr();
duke@435:         }
duke@435:      }
duke@435: 
duke@435:   STEP(150, "(printing current compile task)" )
duke@435: 
duke@435:      if (_verbose && _thread && _thread->is_Compiler_thread()) {
duke@435:         CompilerThread* t = (CompilerThread*)_thread;
duke@435:         if (t->task()) {
duke@435:            st->cr();
duke@435:            st->print_cr("Current CompileTask:");
duke@435:            t->task()->print_line_on_error(st, buf, sizeof(buf));
duke@435:            st->cr();
duke@435:         }
duke@435:      }
duke@435: 
duke@435:   STEP(160, "(printing process)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        st->cr();
duke@435:        st->print_cr("---------------  P R O C E S S  ---------------");
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(170, "(printing all threads)" )
duke@435: 
duke@435:      // all threads
duke@435:      if (_verbose && _thread) {
duke@435:        Threads::print_on_error(st, _thread, buf, sizeof(buf));
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(175, "(printing VM state)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        // Safepoint state
duke@435:        st->print("VM state:");
duke@435: 
duke@435:        if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
duke@435:        else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
duke@435:        else st->print("not at safepoint");
duke@435: 
duke@435:        // Also see if error occurred during initialization or shutdown
duke@435:        if (!Universe::is_fully_initialized()) {
duke@435:          st->print(" (not fully initialized)");
duke@435:        } else if (VM_Exit::vm_exited()) {
duke@435:          st->print(" (shutting down)");
duke@435:        } else {
duke@435:          st->print(" (normal execution)");
duke@435:        }
duke@435:        st->cr();
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(180, "(printing owned locks on error)" )
duke@435: 
duke@435:      // mutexes/monitors that currently have an owner
duke@435:      if (_verbose) {
duke@435:        print_owned_locks_on_error(st);
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(190, "(printing heap information)" )
duke@435: 
duke@435:      if (_verbose && Universe::is_fully_initialized()) {
stefank@4904:        Universe::heap()->print_on_error(st);
never@3687:        st->cr();
never@3687: 
never@3687:        st->print_cr("Polling page: " INTPTR_FORMAT, os::get_polling_page());
never@3687:        st->cr();
duke@435:      }
duke@435: 
never@2262:   STEP(195, "(printing code cache information)" )
never@2262: 
never@2262:      if (_verbose && Universe::is_fully_initialized()) {
never@2262:        // print code cache information before vm abort
vladidan@4438:        CodeCache::print_summary(st);
never@2262:        st->cr();
never@2262:      }
never@2262: 
never@3499:   STEP(200, "(printing ring buffers)" )
never@3499: 
never@3499:      if (_verbose) {
never@3499:        Events::print_all(st);
never@3499:        st->cr();
never@3499:      }
never@3499: 
never@3499:   STEP(205, "(printing dynamic libraries)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        // dynamic libraries, or memory map
duke@435:        os::print_dll_info(st);
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(210, "(printing VM options)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        // VM options
duke@435:        Arguments::print_on(st);
duke@435:        st->cr();
duke@435:      }
duke@435: 
mgerdin@3619:   STEP(215, "(printing warning if internal testing API used)" )
mgerdin@3619: 
mgerdin@3619:      if (WhiteBox::used()) {
mgerdin@3619:        st->print_cr("Unsupported internal testing APIs have been used.");
mgerdin@3619:        st->cr();
mgerdin@3619:      }
mgerdin@3619: 
duke@435:   STEP(220, "(printing environment variables)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        os::print_environment_variables(st, env_list, buf, sizeof(buf));
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(225, "(printing signal handlers)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        os::print_signal_handlers(st, buf, sizeof(buf));
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(230, "" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        st->cr();
duke@435:        st->print_cr("---------------  S Y S T E M  ---------------");
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(240, "(printing OS information)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        os::print_os_info(st);
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(250, "(printing CPU info)" )
duke@435:      if (_verbose) {
duke@435:        os::print_cpu_info(st);
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(260, "(printing memory info)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        os::print_memory_info(st);
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(270, "(printing internal vm info)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   STEP(280, "(printing date and time)" )
duke@435: 
duke@435:      if (_verbose) {
duke@435:        os::print_date_and_time(st);
duke@435:        st->cr();
duke@435:      }
duke@435: 
duke@435:   END
duke@435: 
duke@435: # undef BEGIN
duke@435: # undef STEP
duke@435: # undef END
duke@435: }
duke@435: 
bobv@2036: VMError* volatile VMError::first_error = NULL;
bobv@2036: volatile jlong VMError::first_error_tid = -1;
duke@435: 
vlivanov@5027: /** Expand a pattern into a buffer starting at pos and open a file using constructed path */
vlivanov@5027: static int expand_and_open(const char* pattern, char* buf, size_t buflen, size_t pos) {
vlivanov@5027:   int fd = -1;
vlivanov@5027:   if (Arguments::copy_expand_pid(pattern, strlen(pattern), &buf[pos], buflen - pos)) {
vlivanov@5027:     fd = open(buf, O_RDWR | O_CREAT | O_TRUNC, 0666);
vlivanov@5027:   }
vlivanov@5027:   return fd;
vlivanov@5027: }
vlivanov@5027: 
vlivanov@5027: /**
vlivanov@5027:  * Construct file name for a log file and return it's file descriptor.
vlivanov@5027:  * Name and location depends on pattern, default_pattern params and access
vlivanov@5027:  * permissions.
vlivanov@5027:  */
vlivanov@5027: static int prepare_log_file(const char* pattern, const char* default_pattern, char* buf, size_t buflen) {
vlivanov@5027:   int fd = -1;
vlivanov@5027: 
vlivanov@5027:   // If possible, use specified pattern to construct log file name
vlivanov@5027:   if (pattern != NULL) {
vlivanov@5027:     fd = expand_and_open(pattern, buf, buflen, 0);
vlivanov@5027:   }
vlivanov@5027: 
vlivanov@5027:   // Either user didn't specify, or the user's location failed,
vlivanov@5027:   // so use the default name in the current directory
vlivanov@5027:   if (fd == -1) {
vlivanov@5027:     const char* cwd = os::get_current_directory(buf, buflen);
vlivanov@5027:     if (cwd != NULL) {
vlivanov@5027:       size_t pos = strlen(cwd);
vlivanov@5027:       int fsep_len = jio_snprintf(&buf[pos], buflen-pos, "%s", os::file_separator());
vlivanov@5027:       pos += fsep_len;
vlivanov@5027:       if (fsep_len > 0) {
vlivanov@5027:         fd = expand_and_open(default_pattern, buf, buflen, pos);
vlivanov@5027:       }
vlivanov@5027:     }
vlivanov@5027:   }
vlivanov@5027: 
vlivanov@5027:    // try temp directory if it exists.
vlivanov@5027:    if (fd == -1) {
vlivanov@5027:      const char* tmpdir = os::get_temp_directory();
vlivanov@5027:      if (tmpdir != NULL && strlen(tmpdir) > 0) {
vlivanov@5027:        int pos = jio_snprintf(buf, buflen, "%s%s", tmpdir, os::file_separator());
vlivanov@5027:        if (pos > 0) {
vlivanov@5027:          fd = expand_and_open(default_pattern, buf, buflen, pos);
vlivanov@5027:        }
vlivanov@5027:      }
vlivanov@5027:    }
vlivanov@5027: 
vlivanov@5027:   return fd;
vlivanov@5027: }
vlivanov@5027: 
duke@435: void VMError::report_and_die() {
duke@435:   // Don't allocate large buffer on stack
duke@435:   static char buffer[O_BUFLEN];
duke@435: 
duke@435:   // An error could happen before tty is initialized or after it has been
duke@435:   // destroyed. Here we use a very simple unbuffered fdStream for printing.
duke@435:   // Only out.print_raw() and out.print_raw_cr() should be used, as other
duke@435:   // printing methods need to allocate large buffer on stack. To format a
duke@435:   // string, use jio_snprintf() with a static buffer or use staticBufferStream.
duke@435:   static fdStream out(defaultStream::output_fd());
duke@435: 
duke@435:   // How many errors occurred in error handler when reporting first_error.
duke@435:   static int recursive_error_count;
duke@435: 
duke@435:   // We will first print a brief message to standard out (verbose = false),
duke@435:   // then save detailed information in log file (verbose = true).
duke@435:   static bool out_done = false;         // done printing to standard out
duke@435:   static bool log_done = false;         // done saving error log
kamg@2515:   static bool transmit_report_done = false; // done error reporting
duke@435:   static fdStream log;                  // error log
duke@435: 
zgu@3900:   // disble NMT to avoid further exception
zgu@3900:   MemTracker::shutdown(MemTracker::NMT_error_reporting);
zgu@3900: 
duke@435:   if (SuppressFatalErrorMessage) {
duke@435:       os::abort();
duke@435:   }
duke@435:   jlong mytid = os::current_thread_id();
duke@435:   if (first_error == NULL &&
duke@435:       Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
duke@435: 
duke@435:     // first time
duke@435:     first_error_tid = mytid;
duke@435:     set_error_reported();
duke@435: 
sla@2584:     if (ShowMessageBoxOnError || PauseAtExit) {
duke@435:       show_message_box(buffer, sizeof(buffer));
duke@435: 
duke@435:       // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
duke@435:       // WatcherThread can kill JVM if the error handler hangs.
duke@435:       ShowMessageBoxOnError = false;
duke@435:     }
duke@435: 
ctornqvi@2520:     // Write a minidump on Windows, check core dump limits on Linux/Solaris
ctornqvi@2520:     os::check_or_create_dump(_siginfo, _context, buffer, sizeof(buffer));
ctornqvi@2520: 
duke@435:     // reset signal handlers or exception filter; make sure recursive crashes
duke@435:     // are handled properly.
duke@435:     reset_signal_handlers();
duke@435: 
duke@435:   } else {
coleenp@946:     // If UseOsErrorReporting we call this for each level of the call stack
coleenp@946:     // while searching for the exception handler.  Only the first level needs
coleenp@946:     // to be reported.
coleenp@946:     if (UseOSErrorReporting && log_done) return;
coleenp@946: 
duke@435:     // This is not the first error, see if it happened in a different thread
duke@435:     // or in the same thread during error reporting.
duke@435:     if (first_error_tid != mytid) {
duke@435:       jio_snprintf(buffer, sizeof(buffer),
duke@435:                    "[thread " INT64_FORMAT " also had an error]",
duke@435:                    mytid);
duke@435:       out.print_raw_cr(buffer);
duke@435: 
duke@435:       // error reporting is not MT-safe, block current thread
duke@435:       os::infinite_sleep();
duke@435: 
duke@435:     } else {
duke@435:       if (recursive_error_count++ > 30) {
duke@435:         out.print_raw_cr("[Too many errors, abort]");
duke@435:         os::die();
duke@435:       }
duke@435: 
duke@435:       jio_snprintf(buffer, sizeof(buffer),
duke@435:                    "[error occurred during error reporting %s, id 0x%x]",
duke@435:                    first_error ? first_error->_current_step_info : "",
duke@435:                    _id);
duke@435:       if (log.is_open()) {
duke@435:         log.cr();
duke@435:         log.print_raw_cr(buffer);
duke@435:         log.cr();
duke@435:       } else {
duke@435:         out.cr();
duke@435:         out.print_raw_cr(buffer);
duke@435:         out.cr();
duke@435:       }
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   // print to screen
duke@435:   if (!out_done) {
duke@435:     first_error->_verbose = false;
duke@435: 
duke@435:     staticBufferStream sbs(buffer, sizeof(buffer), &out);
duke@435:     first_error->report(&sbs);
duke@435: 
duke@435:     out_done = true;
duke@435: 
duke@435:     first_error->_current_step = 0;         // reset current_step
duke@435:     first_error->_current_step_info = "";   // reset current_step string
duke@435:   }
duke@435: 
duke@435:   // print to error log file
duke@435:   if (!log_done) {
duke@435:     first_error->_verbose = true;
duke@435: 
duke@435:     // see if log file is already open
duke@435:     if (!log.is_open()) {
duke@435:       // open log file
vlivanov@5027:       int fd = prepare_log_file(ErrorFile, "hs_err_pid%p.log", buffer, sizeof(buffer));
duke@435:       if (fd != -1) {
duke@435:         out.print_raw("# An error report file with more information is saved as:\n# ");
duke@435:         out.print_raw_cr(buffer);
duke@435:         os::set_error_file(buffer);
duke@435: 
duke@435:         log.set_fd(fd);
duke@435:       } else {
duke@435:         out.print_raw_cr("# Can not save log file, dump to screen..");
duke@435:         log.set_fd(defaultStream::output_fd());
kamg@2515:         /* Error reporting currently needs dumpfile.
kamg@2515:          * Maybe implement direct streaming in the future.*/
kamg@2515:         transmit_report_done = true;
duke@435:       }
duke@435:     }
duke@435: 
duke@435:     staticBufferStream sbs(buffer, O_BUFLEN, &log);
duke@435:     first_error->report(&sbs);
duke@435:     first_error->_current_step = 0;         // reset current_step
duke@435:     first_error->_current_step_info = "";   // reset current_step string
duke@435: 
kamg@2515:     // Run error reporting to determine whether or not to report the crash.
kamg@2515:     if (!transmit_report_done && should_report_bug(first_error->_id)) {
kamg@2515:       transmit_report_done = true;
vlivanov@5027:       FILE* hs_err = os::open(log.fd(), "r");
kamg@2515:       if (NULL != hs_err) {
kamg@2515:         ErrorReporter er;
kamg@2515:         er.call(hs_err, buffer, O_BUFLEN);
kamg@2515:       }
kamg@2515:     }
kamg@2515: 
duke@435:     if (log.fd() != defaultStream::output_fd()) {
duke@435:       close(log.fd());
duke@435:     }
duke@435: 
duke@435:     log.set_fd(-1);
duke@435:     log_done = true;
duke@435:   }
duke@435: 
duke@435: 
duke@435:   static bool skip_OnError = false;
duke@435:   if (!skip_OnError && OnError && OnError[0]) {
duke@435:     skip_OnError = true;
duke@435: 
duke@435:     out.print_raw_cr("#");
duke@435:     out.print_raw   ("# -XX:OnError=\"");
duke@435:     out.print_raw   (OnError);
duke@435:     out.print_raw_cr("\"");
duke@435: 
duke@435:     char* cmd;
duke@435:     const char* ptr = OnError;
duke@435:     while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
duke@435:       out.print_raw   ("#   Executing ");
never@3156: #if defined(LINUX) || defined(_ALLBSD_SOURCE)
duke@435:       out.print_raw   ("/bin/sh -c ");
duke@435: #elif defined(SOLARIS)
duke@435:       out.print_raw   ("/usr/bin/sh -c ");
duke@435: #endif
duke@435:       out.print_raw   ("\"");
duke@435:       out.print_raw   (cmd);
duke@435:       out.print_raw_cr("\" ...");
duke@435: 
duke@435:       os::fork_and_exec(cmd);
duke@435:     }
duke@435: 
duke@435:     // done with OnError
duke@435:     OnError = NULL;
duke@435:   }
duke@435: 
minqi@4267:   static bool skip_replay = false;
minqi@4267:   if (DumpReplayDataOnError && _thread && _thread->is_Compiler_thread() && !skip_replay) {
minqi@4267:     skip_replay = true;
minqi@4267:     ciEnv* env = ciEnv::current();
minqi@4267:     if (env != NULL) {
vlivanov@5027:       int fd = prepare_log_file(ReplayDataFile, "replay_pid%p.log", buffer, sizeof(buffer));
vlivanov@5027:       if (fd != -1) {
vlivanov@5027:         FILE* replay_data_file = os::open(fd, "w");
vlivanov@5027:         if (replay_data_file != NULL) {
vlivanov@5027:           fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
vlivanov@5027:           env->dump_replay_data(&replay_data_stream);
vlivanov@5027:           out.print_raw("#\n# Compiler replay data is saved as:\n# ");
vlivanov@5027:           out.print_raw_cr(buffer);
vlivanov@5027:         } else {
vlivanov@5027:           out.print_raw("#\n# Can't open file to dump replay data. Error: ");
vlivanov@5027:           out.print_raw_cr(strerror(os::get_last_error()));
vlivanov@5027:         }
vlivanov@5027:       }
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
coleenp@2418:   static bool skip_bug_url = !should_report_bug(first_error->_id);
duke@435:   if (!skip_bug_url) {
duke@435:     skip_bug_url = true;
duke@435: 
duke@435:     out.print_raw_cr("#");
duke@435:     print_bug_submit_message(&out, _thread);
duke@435:   }
duke@435: 
duke@435:   if (!UseOSErrorReporting) {
duke@435:     // os::abort() will call abort hooks, try it first.
duke@435:     static bool skip_os_abort = false;
duke@435:     if (!skip_os_abort) {
duke@435:       skip_os_abort = true;
coleenp@2418:       bool dump_core = should_report_bug(first_error->_id);
coleenp@2418:       os::abort(dump_core);
duke@435:     }
duke@435: 
duke@435:     // if os::abort() doesn't abort, try os::die();
duke@435:     os::die();
duke@435:   }
duke@435: }
duke@435: 
duke@435: /*
duke@435:  * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
duke@435:  * ensures utilities such as jmap can observe the process is a consistent state.
duke@435:  */
duke@435: class VM_ReportJavaOutOfMemory : public VM_Operation {
duke@435:  private:
duke@435:   VMError *_err;
duke@435:  public:
duke@435:   VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
duke@435:   VMOp_Type type() const                 { return VMOp_ReportJavaOutOfMemory; }
duke@435:   void doit();
duke@435: };
duke@435: 
duke@435: void VM_ReportJavaOutOfMemory::doit() {
duke@435:   // Don't allocate large buffer on stack
duke@435:   static char buffer[O_BUFLEN];
duke@435: 
duke@435:   tty->print_cr("#");
duke@435:   tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
duke@435:   tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
duke@435: 
duke@435:   // make heap parsability
duke@435:   Universe::heap()->ensure_parsability(false);  // no need to retire TLABs
duke@435: 
duke@435:   char* cmd;
duke@435:   const char* ptr = OnOutOfMemoryError;
duke@435:   while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
duke@435:     tty->print("#   Executing ");
duke@435: #if defined(LINUX)
duke@435:     tty->print  ("/bin/sh -c ");
duke@435: #elif defined(SOLARIS)
duke@435:     tty->print  ("/usr/bin/sh -c ");
duke@435: #endif
duke@435:     tty->print_cr("\"%s\"...", cmd);
duke@435: 
duke@435:     os::fork_and_exec(cmd);
duke@435:   }
duke@435: }
duke@435: 
duke@435: void VMError::report_java_out_of_memory() {
duke@435:   if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
duke@435:     MutexLocker ml(Heap_lock);
duke@435:     VM_ReportJavaOutOfMemory op(this);
duke@435:     VMThread::execute(&op);
duke@435:   }
duke@435: }