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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25
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26 class VM_ReportJavaOutOfMemory;
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27
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28 class VMError : public StackObj {
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29 friend class VM_ReportJavaOutOfMemory;
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30
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31 enum ErrorType {
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32 internal_error = 0xe0000000,
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33 oom_error = 0xe0000001
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34 };
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35 int _id; // Solaris/Linux signals: 0 - SIGRTMAX
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36 // Windows exceptions: 0xCxxxxxxx system errors
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37 // 0x8xxxxxxx system warnings
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38
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39 const char * _message;
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40
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41 Thread * _thread; // NULL if it's native thread
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42
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43
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44 // additional info for crashes
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45 address _pc; // faulting PC
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46 void * _siginfo; // ExceptionRecord on Windows,
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47 // siginfo_t on Solaris/Linux
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48 void * _context; // ContextRecord on Windows,
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49 // ucontext_t on Solaris/Linux
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50
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51 // additional info for VM internal errors
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52 const char * _filename;
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53 int _lineno;
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54
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55 // used by fatal error handler
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56 int _current_step;
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57 const char * _current_step_info;
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58 int _verbose;
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59
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60 // used by reporting about OOM
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61 size_t _size;
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62
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63 // set signal handlers on Solaris/Linux or the default exception filter
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64 // on Windows, to handle recursive crashes.
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65 void reset_signal_handlers();
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66
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67 // handle -XX:+ShowMessageBoxOnError. buf is used to format the message string
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68 void show_message_box(char* buf, int buflen);
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69
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70 // generate an error report
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71 void report(outputStream* st);
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72
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73 // accessor
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74 const char* message() { return _message; }
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75
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76 public:
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77 // Constructor for crashes
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78 VMError(Thread* thread, int sig, address pc, void* siginfo, void* context);
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79 // Constructor for VM internal errors
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80 VMError(Thread* thread, const char* message, const char* filename, int lineno);
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81
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82 // Constructors for VM OOM errors
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83 VMError(Thread* thread, size_t size, const char* message, const char* filename, int lineno);
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84 // Constructor for non-fatal errors
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85 VMError(const char* message);
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86
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87 // return a string to describe the error
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88 char *error_string(char* buf, int buflen);
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89
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90 // main error reporting function
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91 void report_and_die();
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92
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93 // reporting OutOfMemoryError
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94 void report_java_out_of_memory();
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95
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96 // returns original flags for signal, if it was resetted, or -1 if
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97 // signal was not changed by error reporter
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98 static int get_resetted_sigflags(int sig);
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99
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100 // returns original handler for signal, if it was resetted, or NULL if
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101 // signal was not changed by error reporter
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102 static address get_resetted_sighandler(int sig);
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103 };
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