Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 class VM_ReportJavaOutOfMemory;

 class VMError : public StackObj {

   friend class VM_ReportJavaOutOfMemory;

   enum ErrorType {

     internal_error = 0xe0000000,

     oom_error      = 0xe0000001

   };

   int          _id;          // Solaris/Linux signals: 0 - SIGRTMAX

                              // Windows exceptions: 0xCxxxxxxx system errors

                              //                     0x8xxxxxxx system warnings

   const char * _message;

   const char * _detail_msg;

   Thread *     _thread;      // NULL if it's native thread

   // additional info for crashes

   address      _pc;          // faulting PC

   void *       _siginfo;     // ExceptionRecord on Windows,

                              // siginfo_t on Solaris/Linux

   void *       _context;     // ContextRecord on Windows,

                              // ucontext_t on Solaris/Linux

   // additional info for VM internal errors

   const char * _filename;

   int          _lineno;

   // used by fatal error handler

   int          _current_step;

   const char * _current_step_info;

   int          _verbose;

   // 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* volatile first_error;

   static volatile jlong    first_error_tid;

   // used by reporting about OOM

   size_t       _size;

   // set signal handlers on Solaris/Linux or the default exception filter

   // on Windows, to handle recursive crashes.

   void reset_signal_handlers();

   // handle -XX:+ShowMessageBoxOnError. buf is used to format the message string

   void show_message_box(char* buf, int buflen);

   // generate an error report

   void report(outputStream* st);

   // generate a stack trace

   static void print_stack_trace(outputStream* st, JavaThread* jt,

                                 char* buf, int buflen, bool verbose = false);

   // accessor

   const char* message() const    { return _message; }

   const char* detail_msg() const { return _detail_msg; }

 public:

   // Constructor for crashes

   VMError(Thread* thread, int sig, address pc, void* siginfo, void* context);

   // Constructor for VM internal errors

   VMError(Thread* thread, const char* filename, int lineno,

           const char* message, const char * detail_msg);

   // Constructor for VM OOM errors

   VMError(Thread* thread, const char* filename, int lineno, size_t size,

           const char* message);

   // Constructor for non-fatal errors

   VMError(const char* message);

   // return a string to describe the error

   char *error_string(char* buf, int buflen);

   // main error reporting function

   void report_and_die();

   // reporting OutOfMemoryError

   void report_java_out_of_memory();

   // returns original flags for signal, if it was resetted, or -1 if

   // signal was not changed by error reporter

   static int get_resetted_sigflags(int sig);

   // returns original handler for signal, if it was resetted, or NULL if

   // signal was not changed by error reporter

   static address get_resetted_sighandler(int sig);

   // check to see if fatal error reporting is in progress

   static bool fatal_error_in_progress() { return first_error != NULL; }

 };