1 /*
   2  * Copyright 2003-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 
  26 class VM_ReportJavaOutOfMemory;
  27 
  28 class VMError : public StackObj {
  29   friend class VM_ReportJavaOutOfMemory;
  30 
  31   enum ErrorType {
  32     internal_error = 0xe0000000,
  33     oom_error      = 0xe0000001
  34   };
  35   int          _id;          // Solaris/Linux signals: 0 - SIGRTMAX
  36                              // Windows exceptions: 0xCxxxxxxx system errors
  37                              //                     0x8xxxxxxx system warnings
  38 
  39   const char * _message;
  40 
  41   Thread *     _thread;      // NULL if it's native thread
  42 
  43 
  44   // additional info for crashes
  45   address      _pc;          // faulting PC
  46   void *       _siginfo;     // ExceptionRecord on Windows,
  47                              // siginfo_t on Solaris/Linux
  48   void *       _context;     // ContextRecord on Windows,
  49                              // ucontext_t on Solaris/Linux
  50 
  51   // additional info for VM internal errors
  52   const char * _filename;
  53   int          _lineno;
  54 
  55   // used by fatal error handler
  56   int          _current_step;
  57   const char * _current_step_info;
  58   int          _verbose;
  59 
  60   // used by reporting about OOM
  61   size_t       _size;
  62 
  63   // set signal handlers on Solaris/Linux or the default exception filter
  64   // on Windows, to handle recursive crashes.
  65   void reset_signal_handlers();
  66 
  67   // handle -XX:+ShowMessageBoxOnError. buf is used to format the message string
  68   void show_message_box(char* buf, int buflen);
  69 
  70   // generate an error report
  71   void report(outputStream* st);
  72 
  73   // accessor
  74   const char* message()         { return _message; }
  75 
  76 public:
  77   // Constructor for crashes
  78   VMError(Thread* thread, int sig, address pc, void* siginfo, void* context);
  79   // Constructor for VM internal errors
  80   VMError(Thread* thread, const char* message, const char* filename, int lineno);
  81 
  82   // Constructors for VM OOM errors
  83   VMError(Thread* thread, size_t size, const char* message, const char* filename, int lineno);
  84   // Constructor for non-fatal errors
  85   VMError(const char* message);
  86 
  87   // return a string to describe the error
  88   char *error_string(char* buf, int buflen);
  89 
  90   // main error reporting function
  91   void report_and_die();
  92 
  93   // reporting OutOfMemoryError
  94   void report_java_out_of_memory();
  95 
  96   // returns original flags for signal, if it was resetted, or -1 if
  97   // signal was not changed by error reporter
  98   static int get_resetted_sigflags(int sig);
  99 
 100   // returns original handler for signal, if it was resetted, or NULL if
 101   // signal was not changed by error reporter
 102   static address get_resetted_sighandler(int sig);
 103 };