| /* |
| * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_UTILITIES_VMERROR_HPP |
| #define SHARE_VM_UTILITIES_VMERROR_HPP |
| |
| #include "utilities/globalDefinitions.hpp" |
| |
| class Decoder; |
| class frame; |
| class VM_ReportJavaOutOfMemory; |
| |
| class VMError : public AllStatic { |
| friend class VM_ReportJavaOutOfMemory; |
| friend class Decoder; |
| friend class VMStructs; |
| |
| static int _id; // Solaris/Linux signals: 0 - SIGRTMAX |
| // Windows exceptions: 0xCxxxxxxx system errors |
| // 0x8xxxxxxx system warnings |
| |
| static const char* _message; |
| static char _detail_msg[1024]; |
| |
| static Thread* _thread; // NULL if it's native thread |
| |
| // additional info for crashes |
| static address _pc; // faulting PC |
| static void* _siginfo; // ExceptionRecord on Windows, |
| // siginfo_t on Solaris/Linux |
| static void* _context; // ContextRecord on Windows, |
| // ucontext_t on Solaris/Linux |
| |
| // additional info for VM internal errors |
| static const char* _filename; |
| static int _lineno; |
| |
| // used by reporting about OOM |
| static size_t _size; |
| |
| // used by fatal error handler |
| static int _current_step; |
| static const char* _current_step_info; |
| |
| // Thread id of the first error. We must be able to handle native thread, |
| // so use thread id instead of Thread* to identify thread. |
| static volatile intptr_t first_error_tid; |
| |
| // Core dump status, false if we have been unable to write a core/minidump for some reason |
| static bool coredump_status; |
| |
| // When coredump_status is set to true this will contain the name/path to the core/minidump, |
| // if coredump_status if false, this will (hopefully) contain a useful error explaining why |
| // no core/minidump has been written to disk |
| static char coredump_message[O_BUFLEN]; |
| |
| // Timeout handling: |
| // Timestamp at which error reporting started; -1 if no error reporting in progress. |
| static volatile jlong _reporting_start_time; |
| // Whether or not error reporting did timeout. |
| static volatile bool _reporting_did_timeout; |
| // Timestamp at which the last error reporting step started; -1 if no error reporting |
| // in progress. |
| static volatile jlong _step_start_time; |
| // Whether or not the last error reporting step did timeout. |
| static volatile bool _step_did_timeout; |
| |
| static bool _error_reported; |
| |
| public: |
| |
| // set signal handlers on Solaris/Linux or the default exception filter |
| // on Windows, to handle recursive crashes. |
| static void reset_signal_handlers(); |
| |
| // handle -XX:+ShowMessageBoxOnError. buf is used to format the message string |
| static void show_message_box(char* buf, int buflen); |
| |
| // generate an error report |
| static void report(outputStream* st, bool verbose); |
| |
| // generate a stack trace |
| static void print_stack_trace(outputStream* st, JavaThread* jt, |
| char* buf, int buflen, bool verbose = false); |
| |
| // public for use by the internal non-product debugger. |
| NOT_PRODUCT(public:) |
| static void print_native_stack(outputStream* st, frame fr, Thread* t, |
| char* buf, int buf_size); |
| NOT_PRODUCT(private:) |
| |
| static bool should_report_bug(unsigned int id) { |
| return (id != OOM_MALLOC_ERROR) && (id != OOM_MMAP_ERROR); |
| } |
| |
| // Write a hint to the stream in case siginfo relates to a segv/bus error |
| // and the offending address points into CDS store. |
| static void check_failing_cds_access(outputStream* st, const void* siginfo); |
| |
| static void report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo, |
| void* context, const char* detail_fmt, ...) ATTRIBUTE_PRINTF(6, 7); |
| static void report_and_die(const char* message, const char* detail_fmt, ...) ATTRIBUTE_PRINTF(2, 3); |
| |
| static fdStream out; |
| static fdStream log; // error log used by VMError::report_and_die() |
| |
| // Timeout handling. |
| // Hook functions for platform dependend functionality: |
| static void reporting_started(); |
| static void interrupt_reporting_thread(); |
| |
| // Helper function to get the current timestamp. |
| static jlong get_current_timestamp(); |
| |
| // Accessors to get/set the start times for step and total timeout. |
| static void record_reporting_start_time(); |
| static jlong get_reporting_start_time(); |
| static void record_step_start_time(); |
| static jlong get_step_start_time(); |
| |
| public: |
| |
| // return a string to describe the error |
| static char* error_string(char* buf, int buflen); |
| |
| // Record status of core/minidump |
| static void record_coredump_status(const char* message, bool status); |
| |
| // support for VM.info diagnostic command |
| static void print_vm_info(outputStream* st); |
| |
| // main error reporting function |
| static void report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args, |
| Thread* thread, address pc, void* siginfo, void* context, |
| const char* filename, int lineno, size_t size) ATTRIBUTE_PRINTF(3, 0); |
| |
| static void report_and_die(Thread* thread, unsigned int sig, address pc, |
| void* siginfo, void* context); |
| |
| static void report_and_die(Thread* thread,const char* filename, int lineno, const char* message, |
| const char* detail_fmt, va_list detail_args) ATTRIBUTE_PRINTF(5, 0); |
| |
| static void report_and_die(Thread* thread, const char* filename, int lineno, size_t size, |
| VMErrorType vm_err_type, const char* detail_fmt, |
| va_list detail_args) ATTRIBUTE_PRINTF(6, 0); |
| |
| static void report_and_die(const char* message); |
| |
| // reporting OutOfMemoryError |
| static void report_java_out_of_memory(const char* message); |
| |
| // returns original flags for signal, if it was resetted, or -1 if |
| // signal was not changed by error reporter |
| static int get_resetted_sigflags(int sig); |
| |
| // returns original handler for signal, if it was resetted, or NULL if |
| // signal was not changed by error reporter |
| static address get_resetted_sighandler(int sig); |
| |
| // check to see if fatal error reporting is in progress |
| static bool fatal_error_in_progress() { return first_error_tid != -1; } |
| |
| static intptr_t get_first_error_tid() { return first_error_tid; } |
| |
| // Called by the WatcherThread to check if error reporting has timed-out. |
| // Returns true if error reporting has not completed within the ErrorLogTimeout limit. |
| static bool check_timeout(); |
| |
| // Support for avoiding multiple asserts |
| static bool is_error_reported(); |
| |
| // Test vmassert(), fatal(), guarantee(), etc. |
| NOT_PRODUCT(static void test_error_handler();) |
| NOT_PRODUCT(static void controlled_crash(int how);) |
| |
| // returns an address which is guaranteed to generate a SIGSEGV on read, |
| // for test purposes, which is not NULL and contains bits in every word |
| static void* get_segfault_address(); |
| }; |
| #endif // SHARE_VM_UTILITIES_VMERROR_HPP |