202 lines
7.9 KiB
C++
202 lines
7.9 KiB
C++
/*
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* Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_UTILITIES_VMERROR_HPP
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#define SHARE_VM_UTILITIES_VMERROR_HPP
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#include "utilities/globalDefinitions.hpp"
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class Decoder;
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class frame;
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class VM_ReportJavaOutOfMemory;
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class VMError : public AllStatic {
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friend class VM_ReportJavaOutOfMemory;
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friend class Decoder;
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friend class VMStructs;
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static int _id; // Solaris/Linux signals: 0 - SIGRTMAX
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// Windows exceptions: 0xCxxxxxxx system errors
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// 0x8xxxxxxx system warnings
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static const char* _message;
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static char _detail_msg[1024];
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static Thread* _thread; // NULL if it's native thread
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// additional info for crashes
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static address _pc; // faulting PC
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static void* _siginfo; // ExceptionRecord on Windows,
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// siginfo_t on Solaris/Linux
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static void* _context; // ContextRecord on Windows,
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// ucontext_t on Solaris/Linux
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// additional info for VM internal errors
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static const char* _filename;
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static int _lineno;
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// used by reporting about OOM
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static size_t _size;
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// used by fatal error handler
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static int _current_step;
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static const char* _current_step_info;
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// Thread id of the first error. We must be able to handle native thread,
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// so use thread id instead of Thread* to identify thread.
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static volatile intptr_t first_error_tid;
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// Core dump status, false if we have been unable to write a core/minidump for some reason
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static bool coredump_status;
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// When coredump_status is set to true this will contain the name/path to the core/minidump,
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// if coredump_status if false, this will (hopefully) contain a useful error explaining why
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// no core/minidump has been written to disk
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static char coredump_message[O_BUFLEN];
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// Timeout handling:
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// Timestamp at which error reporting started; -1 if no error reporting in progress.
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static volatile jlong _reporting_start_time;
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// Whether or not error reporting did timeout.
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static volatile bool _reporting_did_timeout;
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// Timestamp at which the last error reporting step started; -1 if no error reporting
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// in progress.
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static volatile jlong _step_start_time;
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// Whether or not the last error reporting step did timeout.
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static volatile bool _step_did_timeout;
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static bool _error_reported;
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public:
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// set signal handlers on Solaris/Linux or the default exception filter
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// on Windows, to handle recursive crashes.
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static void reset_signal_handlers();
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// handle -XX:+ShowMessageBoxOnError. buf is used to format the message string
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static void show_message_box(char* buf, int buflen);
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// generate an error report
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static void report(outputStream* st, bool verbose);
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// generate a stack trace
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static void print_stack_trace(outputStream* st, JavaThread* jt,
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char* buf, int buflen, bool verbose = false);
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// public for use by the internal non-product debugger.
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NOT_PRODUCT(public:)
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static void print_native_stack(outputStream* st, frame fr, Thread* t,
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char* buf, int buf_size);
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NOT_PRODUCT(private:)
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static bool should_report_bug(unsigned int id) {
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return (id != OOM_MALLOC_ERROR) && (id != OOM_MMAP_ERROR);
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}
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// Write a hint to the stream in case siginfo relates to a segv/bus error
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// and the offending address points into CDS store.
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static void check_failing_cds_access(outputStream* st, const void* siginfo);
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static void report_and_die(Thread* thread, unsigned int sig, address pc, void* siginfo,
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void* context, const char* detail_fmt, ...) ATTRIBUTE_PRINTF(6, 7);
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static void report_and_die(const char* message, const char* detail_fmt, ...) ATTRIBUTE_PRINTF(2, 3);
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static fdStream out;
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static fdStream log; // error log used by VMError::report_and_die()
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// Timeout handling.
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// Hook functions for platform dependend functionality:
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static void reporting_started();
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static void interrupt_reporting_thread();
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// Helper function to get the current timestamp.
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static jlong get_current_timestamp();
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// Accessors to get/set the start times for step and total timeout.
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static void record_reporting_start_time();
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static jlong get_reporting_start_time();
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static void record_step_start_time();
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static jlong get_step_start_time();
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public:
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// return a string to describe the error
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static char* error_string(char* buf, int buflen);
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// Record status of core/minidump
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static void record_coredump_status(const char* message, bool status);
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// support for VM.info diagnostic command
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static void print_vm_info(outputStream* st);
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// main error reporting function
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static void report_and_die(int id, const char* message, const char* detail_fmt, va_list detail_args,
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Thread* thread, address pc, void* siginfo, void* context,
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const char* filename, int lineno, size_t size) ATTRIBUTE_PRINTF(3, 0);
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static void report_and_die(Thread* thread, unsigned int sig, address pc,
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void* siginfo, void* context);
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static void report_and_die(Thread* thread, void* context, const char* filename, int lineno, const char* message,
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const char* detail_fmt, va_list detail_args) ATTRIBUTE_PRINTF(6, 0);
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static void report_and_die(Thread* thread, const char* filename, int lineno, size_t size,
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VMErrorType vm_err_type, const char* detail_fmt,
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va_list detail_args) ATTRIBUTE_PRINTF(6, 0);
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static void report_and_die(const char* message);
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// reporting OutOfMemoryError
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static void report_java_out_of_memory(const char* message);
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// returns original flags for signal, if it was resetted, or -1 if
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// signal was not changed by error reporter
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static int get_resetted_sigflags(int sig);
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// returns original handler for signal, if it was resetted, or NULL if
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// signal was not changed by error reporter
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static address get_resetted_sighandler(int sig);
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// check to see if fatal error reporting is in progress
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static bool fatal_error_in_progress() { return first_error_tid != -1; }
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static intptr_t get_first_error_tid() { return first_error_tid; }
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// Called by the WatcherThread to check if error reporting has timed-out.
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// Returns true if error reporting has not completed within the ErrorLogTimeout limit.
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static bool check_timeout();
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// Support for avoiding multiple asserts
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static bool is_error_reported();
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// Test vmassert(), fatal(), guarantee(), etc.
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NOT_PRODUCT(static void test_error_handler();)
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NOT_PRODUCT(static void controlled_crash(int how);)
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// returns an address which is guaranteed to generate a SIGSEGV on read,
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// for test purposes, which is not NULL and contains bits in every word
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static void* get_segfault_address();
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};
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#endif // SHARE_VM_UTILITIES_VMERROR_HPP
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