1 /*
   2  * Copyright (c) 2003, 2015, 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 #ifndef SHARE_VM_UTILITIES_VMERROR_HPP
  26 #define SHARE_VM_UTILITIES_VMERROR_HPP
  27 
  28 #include "utilities/globalDefinitions.hpp"
  29 
  30 class Decoder;
  31 class VM_ReportJavaOutOfMemory;
  32 
  33 class VMError : public StackObj {
  34   friend class VM_ReportJavaOutOfMemory;
  35   friend class Decoder;
  36 
  37   int          _id;          // Solaris/Linux signals: 0 - SIGRTMAX
  38                              // Windows exceptions: 0xCxxxxxxx system errors
  39                              //                     0x8xxxxxxx system warnings
  40 
  41   const char * _message;
  42   const char * _detail_msg;
  43 
  44   Thread *     _thread;      // NULL if it's native thread
  45 
  46 
  47   // additional info for crashes
  48   address      _pc;          // faulting PC
  49   void *       _siginfo;     // ExceptionRecord on Windows,
  50                              // siginfo_t on Solaris/Linux
  51   void *       _context;     // ContextRecord on Windows,
  52                              // ucontext_t on Solaris/Linux
  53 
  54   // additional info for VM internal errors
  55   const char * _filename;
  56   int          _lineno;
  57 
  58   // used by fatal error handler
  59   int          _current_step;
  60   const char * _current_step_info;
  61   int          _verbose;
  62   // First error, and its thread id. We must be able to handle native thread,
  63   // so use thread id instead of Thread* to identify thread.
  64   static VMError* volatile first_error;
  65   static volatile jlong    first_error_tid;
  66 
  67   // Core dump status, false if we have been unable to write a core/minidump for some reason
  68   static bool coredump_status;
  69 
  70   // When coredump_status is set to true this will contain the name/path to the core/minidump,
  71   // if coredump_status if false, this will (hopefully) contain a useful error explaining why
  72   // no core/minidump has been written to disk
  73   static char coredump_message[O_BUFLEN];
  74 
  75   // used by reporting about OOM
  76   size_t       _size;
  77 
  78   // set signal handlers on Solaris/Linux or the default exception filter
  79   // on Windows, to handle recursive crashes.
  80   void reset_signal_handlers();
  81 
  82   // handle -XX:+ShowMessageBoxOnError. buf is used to format the message string
  83   void show_message_box(char* buf, int buflen);
  84 
  85   // generate an error report
  86   void report(outputStream* st);
  87 
  88   // generate a stack trace
  89   static void print_stack_trace(outputStream* st, JavaThread* jt,
  90                                 char* buf, int buflen, bool verbose = false);
  91 
  92   static const char* gc_mode();
  93   static void print_oom_reasons(outputStream* st);
  94 
  95   // accessor
  96   const char* message() const    { return _message; }
  97   const char* detail_msg() const { return _detail_msg; }
  98   bool should_report_bug(unsigned int id) {
  99     return (id != OOM_MALLOC_ERROR) && (id != OOM_MMAP_ERROR);
 100   }
 101 
 102   static fdStream out;
 103   static fdStream log; // error log used by VMError::report_and_die()
 104 
 105 public:
 106 
 107   // Constructor for crashes
 108   VMError(Thread* thread, unsigned int sig, address pc, void* siginfo,
 109           void* context);
 110   // Constructor for VM internal errors
 111   VMError(Thread* thread, const char* filename, int lineno,
 112           const char* message, const char * detail_msg);
 113 
 114   // Constructor for VM OOM errors
 115   VMError(Thread* thread, const char* filename, int lineno, size_t size,
 116           VMErrorType vm_err_type, const char* message);
 117   // Constructor for non-fatal errors
 118   VMError(const char* message);
 119 
 120   // return a string to describe the error
 121   char *error_string(char* buf, int buflen);
 122 
 123   // Record status of core/minidump
 124   static void record_coredump_status(const char* message, bool status);
 125 
 126   // main error reporting function
 127   void report_and_die();
 128 
 129   // reporting OutOfMemoryError
 130   void report_java_out_of_memory();
 131 
 132   // returns original flags for signal, if it was resetted, or -1 if
 133   // signal was not changed by error reporter
 134   static int get_resetted_sigflags(int sig);
 135 
 136   // returns original handler for signal, if it was resetted, or NULL if
 137   // signal was not changed by error reporter
 138   static address get_resetted_sighandler(int sig);
 139 
 140   // check to see if fatal error reporting is in progress
 141   static bool fatal_error_in_progress() { return first_error != NULL; }
 142 
 143   static jlong get_first_error_tid() {
 144     return first_error_tid;
 145   }
 146 };
 147 
 148 #endif // SHARE_VM_UTILITIES_VMERROR_HPP
--- EOF ---