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 AllStatic { 34 friend class VM_ReportJavaOutOfMemory; 35 friend class Decoder; 36 37 static int _id; // Solaris/Linux signals: 0 - SIGRTMAX 38 // Windows exceptions: 0xCxxxxxxx system errors 39 // 0x8xxxxxxx system warnings 40 41 static const char* _message; 42 static char _detail_msg[1024]; 43 44 static Thread* _thread; // NULL if it's native thread 45 46 // additional info for crashes 47 static address _pc; // faulting PC 48 static void* _siginfo; // ExceptionRecord on Windows, 49 // siginfo_t on Solaris/Linux 50 static void* _context; // ContextRecord on Windows, 51 // ucontext_t on Solaris/Linux 52 53 // additional info for VM internal errors 54 static const char* _filename; 55 static int _lineno; 56 57 // used by reporting about OOM 58 static size_t _size; 59 60 // used by fatal error handler 61 static int _current_step; 62 static const char* _current_step_info; 63 64 // Thread id of the first error. We must be able to handle native thread, 65 // so use thread id instead of Thread* to identify thread. 66 static volatile jlong first_error_tid; 67 68 // Core dump status, false if we have been unable to write a core/minidump for some reason 69 static bool coredump_status; 70 71 // When coredump_status is set to true this will contain the name/path to the core/minidump, 72 // if coredump_status if false, this will (hopefully) contain a useful error explaining why 73 // no core/minidump has been written to disk 74 static char coredump_message[O_BUFLEN]; 75 76 77 // set signal handlers on Solaris/Linux or the default exception filter 78 // on Windows, to handle recursive crashes. 79 static void reset_signal_handlers(); 80 81 // handle -XX:+ShowMessageBoxOnError. buf is used to format the message string 82 static void show_message_box(char* buf, int buflen); 83 84 // generate an error report 85 static void report(outputStream* st, bool verbose); 86 87 // generate a stack trace 88 static void print_stack_trace(outputStream* st, JavaThread* jt, 89 char* buf, int buflen, bool verbose = false); 90 91 static const char* gc_mode(); 92 static void print_oom_reasons(outputStream* st); 93 94 static bool should_report_bug(unsigned int id) { 95 return (id != OOM_MALLOC_ERROR) && (id != OOM_MMAP_ERROR); 96 } 97 98 static void report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, 99 void* context, const char* detail_fmt, ...) ATTRIBUTE_PRINTF(6, 7); 100 static void report_and_die(const char* message, const char* detail_fmt, ...) ATTRIBUTE_PRINTF(2, 3); 101 102 static fdStream out; 103 static fdStream log; // error log used by VMError::report_and_die() 104 105 public: 106 107 // return a string to describe the error 108 static char* error_string(char* buf, int buflen); 109 110 // Record status of core/minidump 111 static void record_coredump_status(const char* message, bool status); 112 113 // main error reporting function 114 static void report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args, 115 Thread* thread, address pc, void* siginfo, void* context, 116 const char* filename, int lineno, size_t size) ATTRIBUTE_PRINTF(3, 0); 117 118 static void report_and_die(Thread* thread, unsigned int sig, address pc, 119 void* siginfo, void* context); 120 121 static void report_and_die(Thread* thread,const char* filename, int lineno, const char* message, 122 const char* detail_fmt, va_list detail_args) ATTRIBUTE_PRINTF(5, 0); 123 124 static void report_and_die(Thread* thread, const char* filename, int lineno, size_t size, 125 VMErrorType vm_err_type, const char* detail_fmt, 126 va_list detail_args) ATTRIBUTE_PRINTF(6, 0); 127 128 static void report_and_die(const char* message); 129 130 // reporting OutOfMemoryError 131 static void report_java_out_of_memory(const char* message); 132 133 // returns original flags for signal, if it was resetted, or -1 if 134 // signal was not changed by error reporter 135 static int get_resetted_sigflags(int sig); 136 137 // returns original handler for signal, if it was resetted, or NULL if 138 // signal was not changed by error reporter 139 static address get_resetted_sighandler(int sig); 140 141 // check to see if fatal error reporting is in progress 142 static bool fatal_error_in_progress() { return first_error_tid != -1; } 143 144 static jlong get_first_error_tid() { 145 return first_error_tid; 146 } 147 }; 148 149 #endif // SHARE_VM_UTILITIES_VMERROR_HPP