vmError.hpp revision 3718:b9a9ed0f8eeb 
1/*
2 * Copyright (c) 2003, 2012, 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
30class Decoder;
31class VM_ReportJavaOutOfMemory;
32
33class VMError : public StackObj {
34  friend class VM_ReportJavaOutOfMemory;
35  friend class Decoder;
36
37  enum ErrorType {
38    internal_error = 0xe0000000,
39    oom_error      = 0xe0000001
40  };
41  int          _id;          // Solaris/Linux signals: 0 - SIGRTMAX
42                             // Windows exceptions: 0xCxxxxxxx system errors
43                             //                     0x8xxxxxxx system warnings
44
45  const char * _message;
46  const char * _detail_msg;
47
48  Thread *     _thread;      // NULL if it's native thread
49
50
51  // additional info for crashes
52  address      _pc;          // faulting PC
53  void *       _siginfo;     // ExceptionRecord on Windows,
54                             // siginfo_t on Solaris/Linux
55  void *       _context;     // ContextRecord on Windows,
56                             // ucontext_t on Solaris/Linux
57
58  // additional info for VM internal errors
59  const char * _filename;
60  int          _lineno;
61
62  // used by fatal error handler
63  int          _current_step;
64  const char * _current_step_info;
65  int          _verbose;
66  // First error, and its thread id. We must be able to handle native thread,
67  // so use thread id instead of Thread* to identify thread.
68  static VMError* volatile first_error;
69  static volatile jlong    first_error_tid;
70
71  // Core dump status, false if we have been unable to write a core/minidump for some reason
72  static bool coredump_status;
73
74  // When coredump_status is set to true this will contain the name/path to the core/minidump,
75  // if coredump_status if false, this will (hopefully) contain a useful error explaining why
76  // no core/minidump has been written to disk
77  static char coredump_message[O_BUFLEN];
78
79  // used by reporting about OOM
80  size_t       _size;
81
82  // set signal handlers on Solaris/Linux or the default exception filter
83  // on Windows, to handle recursive crashes.
84  void reset_signal_handlers();
85
86  // handle -XX:+ShowMessageBoxOnError. buf is used to format the message string
87  void show_message_box(char* buf, int buflen);
88
89  // generate an error report
90  void report(outputStream* st);
91
92  // generate a stack trace
93  static void print_stack_trace(outputStream* st, JavaThread* jt,
94                                char* buf, int buflen, bool verbose = false);
95
96  // accessor
97  const char* message() const    { return _message; }
98  const char* detail_msg() const { return _detail_msg; }
99  bool should_report_bug(unsigned int id) { return id != oom_error; }
100
101public:
102  // Constructor for crashes
103  VMError(Thread* thread, unsigned int sig, address pc, void* siginfo,
104          void* context);
105  // Constructor for VM internal errors
106  VMError(Thread* thread, const char* filename, int lineno,
107          const char* message, const char * detail_msg);
108
109  // Constructor for VM OOM errors
110  VMError(Thread* thread, const char* filename, int lineno, size_t size,
111          const char* message);
112  // Constructor for non-fatal errors
113  VMError(const char* message);
114
115  // return a string to describe the error
116  char *error_string(char* buf, int buflen);
117
118  // Report status of core/minidump
119  static void report_coredump_status(const char* message, bool status);
120
121  // main error reporting function
122  void report_and_die();
123
124  // reporting OutOfMemoryError
125  void report_java_out_of_memory();
126
127  // returns original flags for signal, if it was resetted, or -1 if
128  // signal was not changed by error reporter
129  static int get_resetted_sigflags(int sig);
130
131  // returns original handler for signal, if it was resetted, or NULL if
132  // signal was not changed by error reporter
133  static address get_resetted_sighandler(int sig);
134
135  // check to see if fatal error reporting is in progress
136  static bool fatal_error_in_progress() { return first_error != NULL; }
137};
138
139#endif // SHARE_VM_UTILITIES_VMERROR_HPP
140