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