vmError.hpp revision 5232:38f750491293 
1/*
2 * Copyright (c) 2003, 2013, 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  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  // accessor
93  const char* message() const    { return _message; }
94  const char* detail_msg() const { return _detail_msg; }
95  bool should_report_bug(unsigned int id) {
96    return (id != OOM_MALLOC_ERROR) && (id != OOM_MMAP_ERROR);
97  }
98
99  static fdStream out;
100  static fdStream log; // error log used by VMError::report_and_die()
101
102public:
103
104  // Constructor for crashes
105  VMError(Thread* thread, unsigned int sig, address pc, void* siginfo,
106          void* context);
107  // Constructor for VM internal errors
108  VMError(Thread* thread, const char* filename, int lineno,
109          const char* message, const char * detail_msg);
110
111  // Constructor for VM OOM errors
112  VMError(Thread* thread, const char* filename, int lineno, size_t size,
113          VMErrorType vm_err_type, const char* message);
114  // Constructor for non-fatal errors
115  VMError(const char* message);
116
117  // return a string to describe the error
118  char *error_string(char* buf, int buflen);
119
120  // Report status of core/minidump
121  static void report_coredump_status(const char* message, bool status);
122
123  // main error reporting function
124  void report_and_die();
125
126  // reporting OutOfMemoryError
127  void report_java_out_of_memory();
128
129  // returns original flags for signal, if it was resetted, or -1 if
130  // signal was not changed by error reporter
131  static int get_resetted_sigflags(int sig);
132
133  // returns original handler for signal, if it was resetted, or NULL if
134  // signal was not changed by error reporter
135  static address get_resetted_sighandler(int sig);
136
137  // check to see if fatal error reporting is in progress
138  static bool fatal_error_in_progress() { return first_error != NULL; }
139
140  static jlong get_first_error_tid() {
141    return first_error_tid;
142  }
143};
144
145#endif // SHARE_VM_UTILITIES_VMERROR_HPP
146