vmError.hpp revision 513:2328d1d3f8cf 
1/*
2 * Copyright 2003-2007 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
26class VM_ReportJavaOutOfMemory;
27
28class 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  size_t       _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
76public:
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};
104