jdk8-mips64-public/hotspot: src/share/vm/utilities/vmError.cpp@c96030fff130 (annotated)

src/share/vm/utilities/vmError.cpp@c96030fff130 (annotated)

src/share/vm/utilities/vmError.cpp

Thu, 20 Nov 2008 16:56:09 -0800

author: ysr
date: Thu, 20 Nov 2008 16:56:09 -0800
changeset 888: c96030fff130
parent 855: a1980da045cc
child 908: 3ad2b8576c4a
permissions: -rw-r--r--

6684579: SoftReference processing can be made more efficient
Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.
Reviewed-by: jmasa

 /*
  * Copyright 2003-2008 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */
 # include "incls/_precompiled.incl"
 # include "incls/_vmError.cpp.incl"
 // List of environment variables that should be reported in error log file.
 const char *env_list[] = {
   // All platforms
   "JAVA_HOME", "JRE_HOME", "JAVA_TOOL_OPTIONS", "_JAVA_OPTIONS", "CLASSPATH",
   "JAVA_COMPILER", "PATH", "USERNAME",
   // Env variables that are defined on Solaris/Linux
   "LD_LIBRARY_PATH", "LD_PRELOAD", "SHELL", "DISPLAY",
   "HOSTTYPE", "OSTYPE", "ARCH", "MACHTYPE",
   // defined on Linux
   "LD_ASSUME_KERNEL", "_JAVA_SR_SIGNUM",
   // defined on Windows
   "OS", "PROCESSOR_IDENTIFIER", "_ALT_JAVA_HOME_DIR",
   (const char *)0
 };
 // Fatal error handler for internal errors and crashes.
 //
 // The default behavior of fatal error handler is to print a brief message
 // to standard out (defaultStream::output_fd()), then save detailed information
 // into an error report file (hs_err_pid<pid>.log) and abort VM. If multiple
 // threads are having troubles at the same time, only one error is reported.
 // The thread that is reporting error will abort VM when it is done, all other
 // threads are blocked forever inside report_and_die().
 // Constructor for crashes
 VMError::VMError(Thread* thread, int sig, address pc, void* siginfo, void* context) {
     _thread = thread;
     _id = sig;
     _pc   = pc;
     _siginfo = siginfo;
     _context = context;
     _verbose = false;
     _current_step = 0;
     _current_step_info = NULL;
     _message = "";
     _filename = NULL;
     _lineno = 0;
     _size = 0;
 }
 // Constructor for internal errors
 VMError::VMError(Thread* thread, const char* message, const char* filename, int lineno) {
     _thread = thread;
     _id = internal_error;     // set it to a value that's not an OS exception/signal
     _filename = filename;
     _lineno = lineno;
     _message = message;
     _verbose = false;
     _current_step = 0;
     _current_step_info = NULL;
     _pc = NULL;
     _siginfo = NULL;
     _context = NULL;
     _size = 0;
 }
 // Constructor for OOM errors
 VMError::VMError(Thread* thread, size_t size, const char* message, const char* filename, int lineno) {
     _thread = thread;
     _id = oom_error;     // set it to a value that's not an OS exception/signal
     _filename = filename;
     _lineno = lineno;
     _message = message;
     _verbose = false;
     _current_step = 0;
     _current_step_info = NULL;
     _pc = NULL;
     _siginfo = NULL;
     _context = NULL;
     _size = size;
 }
 // Constructor for non-fatal errors
 VMError::VMError(const char* message) {
     _thread = NULL;
     _id = internal_error;     // set it to a value that's not an OS exception/signal
     _filename = NULL;
     _lineno = 0;
     _message = message;
     _verbose = false;
     _current_step = 0;
     _current_step_info = NULL;
     _pc = NULL;
     _siginfo = NULL;
     _context = NULL;
     _size = 0;
 }
 // -XX:OnError=<string>, where <string> can be a list of commands, separated
 // by ';'. "%p" is replaced by current process id (pid); "%%" is replaced by
 // a single "%". Some examples:
 //
 // -XX:OnError="pmap %p"                // show memory map
 // -XX:OnError="gcore %p; dbx - %p"     // dump core and launch debugger
 // -XX:OnError="cat hs_err_pid%p.log | mail my_email@sun.com"
 // -XX:OnError="kill -9 %p"             // ?#!@#
 // A simple parser for -XX:OnError, usage:
 //  ptr = OnError;
 //  while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr) != NULL)
 //     ... ...
 static char* next_OnError_command(char* buf, int buflen, const char** ptr) {
   if (ptr == NULL || *ptr == NULL) return NULL;
   const char* cmd = *ptr;
   // skip leading blanks or ';'
   while (*cmd == ' ' || *cmd == ';') cmd++;
   if (*cmd == '\0') return NULL;
   const char * cmdend = cmd;
   while (*cmdend != '\0' && *cmdend != ';') cmdend++;
   Arguments::copy_expand_pid(cmd, cmdend - cmd, buf, buflen);
   *ptr = (*cmdend == '\0' ? cmdend : cmdend + 1);
   return buf;
 }
 static void print_bug_submit_message(outputStream *out, Thread *thread) {
   if (out == NULL) return;
   out->print_raw_cr("# If you would like to submit a bug report, please visit:");
   out->print_raw   ("#   ");
   out->print_raw_cr(Arguments::java_vendor_url_bug());
   // If the crash is in native code, encourage user to submit a bug to the
   // provider of that code.
   if (thread && thread->is_Java_thread() &&
       !thread->is_hidden_from_external_view()) {
     JavaThread* jt = (JavaThread*)thread;
     if (jt->thread_state() == _thread_in_native) {
       out->print_cr("# The crash happened outside the Java Virtual Machine in native code.\n# See problematic frame for where to report the bug.");
     }
   }
   out->print_raw_cr("#");
 }
 // Return a string to describe the error
 char* VMError::error_string(char* buf, int buflen) {
   char signame_buf[64];
   const char *signame = os::exception_name(_id, signame_buf, sizeof(signame_buf));
   if (signame) {
     jio_snprintf(buf, buflen,
                  "%s (0x%x) at pc=" PTR_FORMAT ", pid=%d, tid=" UINTX_FORMAT,
                  signame, _id, _pc,
                  os::current_process_id(), os::current_thread_id());
   } else {
     if (_filename != NULL && _lineno > 0) {
       // skip directory names
       char separator = os::file_separator()[0];
       const char *p = strrchr(_filename, separator);
       jio_snprintf(buf, buflen,
         "Internal Error at %s:%d, pid=%d, tid=" UINTX_FORMAT " \nError: %s",
         p ? p + 1 : _filename, _lineno,
         os::current_process_id(), os::current_thread_id(),
         _message ? _message : "");
     } else {
       jio_snprintf(buf, buflen,
         "Internal Error (0x%x), pid=%d, tid=" UINTX_FORMAT,
         _id, os::current_process_id(), os::current_thread_id());
     }
   }
   return buf;
 }
 // This is the main function to report a fatal error. Only one thread can
 // call this function, so we don't need to worry about MT-safety. But it's
 // possible that the error handler itself may crash or die on an internal
 // error, for example, when the stack/heap is badly damaged. We must be
 // able to handle recursive errors that happen inside error handler.
 //
 // Error reporting is done in several steps. If a crash or internal error
 // occurred when reporting an error, the nested signal/exception handler
 // can skip steps that are already (or partially) done. Error reporting will
 // continue from the next step. This allows us to retrieve and print
 // information that may be unsafe to get after a fatal error. If it happens,
 // you may find nested report_and_die() frames when you look at the stack
 // in a debugger.
 //
 // In general, a hang in error handler is much worse than a crash or internal
 // error, as it's harder to recover from a hang. Deadlock can happen if we
 // try to grab a lock that is already owned by current thread, or if the
 // owner is blocked forever (e.g. in os::infinite_sleep()). If possible, the
 // error handler and all the functions it called should avoid grabbing any
 // lock. An important thing to notice is that memory allocation needs a lock.
 //
 // We should avoid using large stack allocated buffers. Many errors happen
 // when stack space is already low. Making things even worse is that there
 // could be nested report_and_die() calls on stack (see above). Only one
 // thread can report error, so large buffers are statically allocated in data
 // segment.
 void VMError::report(outputStream* st) {
 # define BEGIN if (_current_step == 0) { _current_step = 1;
 # define STEP(n, s) } if (_current_step < n) { _current_step = n; _current_step_info = s;
 # define END }
   // don't allocate large buffer on stack
   static char buf[O_BUFLEN];
   BEGIN
   STEP(10, "(printing fatal error message)")
      st->print_cr("#");
      st->print_cr("# A fatal error has been detected by the Java Runtime Environment:");
   STEP(15, "(printing type of error)")
      switch(_id) {
        case oom_error:
          st->print_cr("#");
          st->print("# java.lang.OutOfMemoryError: ");
          if (_size) {
            st->print("requested ");
            sprintf(buf,SIZE_FORMAT,_size);
            st->print(buf);
            st->print(" bytes");
            if (_message != NULL) {
              st->print(" for ");
              st->print(_message);
            }
            st->print_cr(". Out of swap space?");
          } else {
            if (_message != NULL)
              st->print_cr(_message);
          }
          break;
        case internal_error:
        default:
          break;
      }
   STEP(20, "(printing exception/signal name)")
      st->print_cr("#");
      st->print("#  ");
      // Is it an OS exception/signal?
      if (os::exception_name(_id, buf, sizeof(buf))) {
        st->print("%s", buf);
        st->print(" (0x%x)", _id);                // signal number
        st->print(" at pc=" PTR_FORMAT, _pc);
      } else {
        st->print("Internal Error");
        if (_filename != NULL && _lineno > 0) {
 #ifdef PRODUCT
          // In product mode chop off pathname?
          char separator = os::file_separator()[0];
          const char *p = strrchr(_filename, separator);
          const char *file = p ? p+1 : _filename;
 #else
          const char *file = _filename;
 #endif
          size_t len = strlen(file);
          size_t buflen = sizeof(buf);
          strncpy(buf, file, buflen);
          if (len + 10 < buflen) {
            sprintf(buf + len, ":" SIZE_FORMAT, _lineno);
          }
          st->print(" (%s)", buf);
        } else {
          st->print(" (0x%x)", _id);
        }
      }
   STEP(30, "(printing current thread and pid)")
      // process id, thread id
      st->print(", pid=%d", os::current_process_id());
      st->print(", tid=" UINTX_FORMAT, os::current_thread_id());
      st->cr();
   STEP(40, "(printing error message)")
      // error message
      if (_message && _message[0] != '\0') {
        st->print_cr("#  Error: %s", _message);
      }
   STEP(50, "(printing Java version string)")
      // VM version
      st->print_cr("#");
      st->print_cr("# Java VM: %s (%s %s %s %s)",
                    Abstract_VM_Version::vm_name(),
                    Abstract_VM_Version::vm_release(),
                    Abstract_VM_Version::vm_info_string(),
                    Abstract_VM_Version::vm_platform_string(),
                    UseCompressedOops ? "compressed oops" : ""
                  );
   STEP(60, "(printing problematic frame)")
      // Print current frame if we have a context (i.e. it's a crash)
      if (_context) {
        st->print_cr("# Problematic frame:");
        st->print("# ");
        frame fr = os::fetch_frame_from_context(_context);
        fr.print_on_error(st, buf, sizeof(buf));
        st->cr();
        st->print_cr("#");
      }
   STEP(65, "(printing bug submit message)")
      if (_verbose) print_bug_submit_message(st, _thread);
   STEP(70, "(printing thread)" )
      if (_verbose) {
        st->cr();
        st->print_cr("---------------  T H R E A D  ---------------");
        st->cr();
      }
   STEP(80, "(printing current thread)" )
      // current thread
      if (_verbose) {
        if (_thread) {
          st->print("Current thread (" PTR_FORMAT "):  ", _thread);
          _thread->print_on_error(st, buf, sizeof(buf));
          st->cr();
        } else {
          st->print_cr("Current thread is native thread");
        }
        st->cr();
      }
   STEP(90, "(printing siginfo)" )
      // signal no, signal code, address that caused the fault
      if (_verbose && _siginfo) {
        os::print_siginfo(st, _siginfo);
        st->cr();
      }
   STEP(100, "(printing registers, top of stack, instructions near pc)")
      // registers, top of stack, instructions near pc
      if (_verbose && _context) {
        os::print_context(st, _context);
        st->cr();
      }
   STEP(110, "(printing stack bounds)" )
      if (_verbose) {
        st->print("Stack: ");
        address stack_top;
        size_t stack_size;
        if (_thread) {
           stack_top = _thread->stack_base();
           stack_size = _thread->stack_size();
        } else {
           stack_top = os::current_stack_base();
           stack_size = os::current_stack_size();
        }
        address stack_bottom = stack_top - stack_size;
        st->print("[" PTR_FORMAT "," PTR_FORMAT "]", stack_bottom, stack_top);
        frame fr = _context ? os::fetch_frame_from_context(_context)
                            : os::current_frame();
        if (fr.sp()) {
          st->print(",  sp=" PTR_FORMAT, fr.sp());
          st->print(",  free space=%dk",
                      ((intptr_t)fr.sp() - (intptr_t)stack_bottom) >> 10);
        }
        st->cr();
      }
   STEP(120, "(printing native stack)" )
      if (_verbose) {
        frame fr = _context ? os::fetch_frame_from_context(_context)
                            : os::current_frame();
        // see if it's a valid frame
        if (fr.pc()) {
           st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
           int count = 0;
           while (count++ < StackPrintLimit) {
              fr.print_on_error(st, buf, sizeof(buf));
              st->cr();
              if (os::is_first_C_frame(&fr)) break;
              fr = os::get_sender_for_C_frame(&fr);
           }
           if (count > StackPrintLimit) {
              st->print_cr("...<more frames>...");
           }
           st->cr();
        }
      }
   STEP(130, "(printing Java stack)" )
      if (_verbose && _thread && _thread->is_Java_thread()) {
        JavaThread* jt = (JavaThread*)_thread;
        if (jt->has_last_Java_frame()) {
          st->print_cr("Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)");
          for(StackFrameStream sfs(jt); !sfs.is_done(); sfs.next()) {
            sfs.current()->print_on_error(st, buf, sizeof(buf));
            st->cr();
          }
        }
      }
   STEP(140, "(printing VM operation)" )
      if (_verbose && _thread && _thread->is_VM_thread()) {
         VMThread* t = (VMThread*)_thread;
         VM_Operation* op = t->vm_operation();
         if (op) {
           op->print_on_error(st);
           st->cr();
           st->cr();
         }
      }
   STEP(150, "(printing current compile task)" )
      if (_verbose && _thread && _thread->is_Compiler_thread()) {
         CompilerThread* t = (CompilerThread*)_thread;
         if (t->task()) {
            st->cr();
            st->print_cr("Current CompileTask:");
            t->task()->print_line_on_error(st, buf, sizeof(buf));
            st->cr();
         }
      }
   STEP(160, "(printing process)" )
      if (_verbose) {
        st->cr();
        st->print_cr("---------------  P R O C E S S  ---------------");
        st->cr();
      }
   STEP(170, "(printing all threads)" )
      // all threads
      if (_verbose && _thread) {
        Threads::print_on_error(st, _thread, buf, sizeof(buf));
        st->cr();
      }
   STEP(175, "(printing VM state)" )
      if (_verbose) {
        // Safepoint state
        st->print("VM state:");
        if (SafepointSynchronize::is_synchronizing()) st->print("synchronizing");
        else if (SafepointSynchronize::is_at_safepoint()) st->print("at safepoint");
        else st->print("not at safepoint");
        // Also see if error occurred during initialization or shutdown
        if (!Universe::is_fully_initialized()) {
          st->print(" (not fully initialized)");
        } else if (VM_Exit::vm_exited()) {
          st->print(" (shutting down)");
        } else {
          st->print(" (normal execution)");
        }
        st->cr();
        st->cr();
      }
   STEP(180, "(printing owned locks on error)" )
      // mutexes/monitors that currently have an owner
      if (_verbose) {
        print_owned_locks_on_error(st);
        st->cr();
      }
   STEP(190, "(printing heap information)" )
      if (_verbose && Universe::is_fully_initialized()) {
        // print heap information before vm abort
        Universe::print_on(st);
        st->cr();
      }
   STEP(200, "(printing dynamic libraries)" )
      if (_verbose) {
        // dynamic libraries, or memory map
        os::print_dll_info(st);
        st->cr();
      }
   STEP(210, "(printing VM options)" )
      if (_verbose) {
        // VM options
        Arguments::print_on(st);
        st->cr();
      }
   STEP(220, "(printing environment variables)" )
      if (_verbose) {
        os::print_environment_variables(st, env_list, buf, sizeof(buf));
        st->cr();
      }
   STEP(225, "(printing signal handlers)" )
      if (_verbose) {
        os::print_signal_handlers(st, buf, sizeof(buf));
        st->cr();
      }
   STEP(230, "" )
      if (_verbose) {
        st->cr();
        st->print_cr("---------------  S Y S T E M  ---------------");
        st->cr();
      }
   STEP(240, "(printing OS information)" )
      if (_verbose) {
        os::print_os_info(st);
        st->cr();
      }
   STEP(250, "(printing CPU info)" )
      if (_verbose) {
        os::print_cpu_info(st);
        st->cr();
      }
   STEP(260, "(printing memory info)" )
      if (_verbose) {
        os::print_memory_info(st);
        st->cr();
      }
   STEP(270, "(printing internal vm info)" )
      if (_verbose) {
        st->print_cr("vm_info: %s", Abstract_VM_Version::internal_vm_info_string());
        st->cr();
      }
   STEP(280, "(printing date and time)" )
      if (_verbose) {
        os::print_date_and_time(st);
        st->cr();
      }
   END
 # undef BEGIN
 # undef STEP
 # undef END
 }
 void VMError::report_and_die() {
   // Don't allocate large buffer on stack
   static char buffer[O_BUFLEN];
   // First error, and its thread id. We must be able to handle native thread,
   // so use thread id instead of Thread* to identify thread.
   static VMError* first_error;
   static jlong    first_error_tid;
   // An error could happen before tty is initialized or after it has been
   // destroyed. Here we use a very simple unbuffered fdStream for printing.
   // Only out.print_raw() and out.print_raw_cr() should be used, as other
   // printing methods need to allocate large buffer on stack. To format a
   // string, use jio_snprintf() with a static buffer or use staticBufferStream.
   static fdStream out(defaultStream::output_fd());
   // How many errors occurred in error handler when reporting first_error.
   static int recursive_error_count;
   // We will first print a brief message to standard out (verbose = false),
   // then save detailed information in log file (verbose = true).
   static bool out_done = false;         // done printing to standard out
   static bool log_done = false;         // done saving error log
   static fdStream log;                  // error log
   if (SuppressFatalErrorMessage) {
       os::abort();
   }
   jlong mytid = os::current_thread_id();
   if (first_error == NULL &&
       Atomic::cmpxchg_ptr(this, &first_error, NULL) == NULL) {
     // first time
     first_error_tid = mytid;
     set_error_reported();
     if (ShowMessageBoxOnError) {
       show_message_box(buffer, sizeof(buffer));
       // User has asked JVM to abort. Reset ShowMessageBoxOnError so the
       // WatcherThread can kill JVM if the error handler hangs.
       ShowMessageBoxOnError = false;
     }
     // reset signal handlers or exception filter; make sure recursive crashes
     // are handled properly.
     reset_signal_handlers();
   } else {
     // This is not the first error, see if it happened in a different thread
     // or in the same thread during error reporting.
     if (first_error_tid != mytid) {
       jio_snprintf(buffer, sizeof(buffer),
                    "[thread " INT64_FORMAT " also had an error]",
                    mytid);
       out.print_raw_cr(buffer);
       // error reporting is not MT-safe, block current thread
       os::infinite_sleep();
     } else {
       if (recursive_error_count++ > 30) {
         out.print_raw_cr("[Too many errors, abort]");
         os::die();
       }
       jio_snprintf(buffer, sizeof(buffer),
                    "[error occurred during error reporting %s, id 0x%x]",
                    first_error ? first_error->_current_step_info : "",
                    _id);
       if (log.is_open()) {
         log.cr();
         log.print_raw_cr(buffer);
         log.cr();
       } else {
         out.cr();
         out.print_raw_cr(buffer);
         out.cr();
       }
     }
   }
   // print to screen
   if (!out_done) {
     first_error->_verbose = false;
     staticBufferStream sbs(buffer, sizeof(buffer), &out);
     first_error->report(&sbs);
     out_done = true;
     first_error->_current_step = 0;         // reset current_step
     first_error->_current_step_info = "";   // reset current_step string
   }
   // print to error log file
   if (!log_done) {
     first_error->_verbose = true;
     // see if log file is already open
     if (!log.is_open()) {
       // open log file
       int fd = -1;
       if (ErrorFile != NULL) {
         bool copy_ok =
           Arguments::copy_expand_pid(ErrorFile, strlen(ErrorFile), buffer, sizeof(buffer));
         if (copy_ok) {
           fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666);
         }
       }
       if (fd == -1) {
         const char *cwd = os::get_current_directory(buffer, sizeof(buffer));
         size_t len = strlen(cwd);
         // either user didn't specify, or the user's location failed,
         // so use the default name in the current directory
         jio_snprintf(&buffer[len], sizeof(buffer)-len, "%shs_err_pid%u.log",
                      os::file_separator(), os::current_process_id());
         fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666);
       }
       if (fd == -1) {
         // try temp directory
         const char * tmpdir = os::get_temp_directory();
         jio_snprintf(buffer, sizeof(buffer), "%shs_err_pid%u.log",
                      (tmpdir ? tmpdir : ""), os::current_process_id());
         fd = open(buffer, O_WRONLY | O_CREAT | O_TRUNC, 0666);
       }
       if (fd != -1) {
         out.print_raw("# An error report file with more information is saved as:\n# ");
         out.print_raw_cr(buffer);
         os::set_error_file(buffer);
         log.set_fd(fd);
       } else {
         out.print_raw_cr("# Can not save log file, dump to screen..");
         log.set_fd(defaultStream::output_fd());
       }
     }
     staticBufferStream sbs(buffer, O_BUFLEN, &log);
     first_error->report(&sbs);
     first_error->_current_step = 0;         // reset current_step
     first_error->_current_step_info = "";   // reset current_step string
     if (log.fd() != defaultStream::output_fd()) {
       close(log.fd());
     }
     log.set_fd(-1);
     log_done = true;
   }
   static bool skip_OnError = false;
   if (!skip_OnError && OnError && OnError[0]) {
     skip_OnError = true;
     out.print_raw_cr("#");
     out.print_raw   ("# -XX:OnError=\"");
     out.print_raw   (OnError);
     out.print_raw_cr("\"");
     char* cmd;
     const char* ptr = OnError;
     while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
       out.print_raw   ("#   Executing ");
 #if defined(LINUX)
       out.print_raw   ("/bin/sh -c ");
 #elif defined(SOLARIS)
       out.print_raw   ("/usr/bin/sh -c ");
 #endif
       out.print_raw   ("\"");
       out.print_raw   (cmd);
       out.print_raw_cr("\" ...");
       os::fork_and_exec(cmd);
     }
     // done with OnError
     OnError = NULL;
   }
   static bool skip_bug_url = false;
   if (!skip_bug_url) {
     skip_bug_url = true;
     out.print_raw_cr("#");
     print_bug_submit_message(&out, _thread);
   }
   if (!UseOSErrorReporting) {
     // os::abort() will call abort hooks, try it first.
     static bool skip_os_abort = false;
     if (!skip_os_abort) {
       skip_os_abort = true;
       os::abort();
     }
     // if os::abort() doesn't abort, try os::die();
     os::die();
   }
 }
 /*
  * OnOutOfMemoryError scripts/commands executed while VM is a safepoint - this
  * ensures utilities such as jmap can observe the process is a consistent state.
  */
 class VM_ReportJavaOutOfMemory : public VM_Operation {
  private:
   VMError *_err;
  public:
   VM_ReportJavaOutOfMemory(VMError *err) { _err = err; }
   VMOp_Type type() const                 { return VMOp_ReportJavaOutOfMemory; }
   void doit();
 };
 void VM_ReportJavaOutOfMemory::doit() {
   // Don't allocate large buffer on stack
   static char buffer[O_BUFLEN];
   tty->print_cr("#");
   tty->print_cr("# java.lang.OutOfMemoryError: %s", _err->message());
   tty->print_cr("# -XX:OnOutOfMemoryError=\"%s\"", OnOutOfMemoryError);
   // make heap parsability
   Universe::heap()->ensure_parsability(false);  // no need to retire TLABs
   char* cmd;
   const char* ptr = OnOutOfMemoryError;
   while ((cmd = next_OnError_command(buffer, sizeof(buffer), &ptr)) != NULL){
     tty->print("#   Executing ");
 #if defined(LINUX)
     tty->print  ("/bin/sh -c ");
 #elif defined(SOLARIS)
     tty->print  ("/usr/bin/sh -c ");
 #endif
     tty->print_cr("\"%s\"...", cmd);
     os::fork_and_exec(cmd);
   }
 }
 void VMError::report_java_out_of_memory() {
   if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
     MutexLocker ml(Heap_lock);
     VM_ReportJavaOutOfMemory op(this);
     VMThread::execute(&op);
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/utilities/vmError.cpp@c96030fff130 (annotated)

src/share/vm/utilities/vmError.cpp