mirror of
https://bitbucket.org/smil3y/kde-playground.git
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149 lines
3.3 KiB
C++
149 lines
3.3 KiB
C++
/*
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* This file is part of the KDE Libraries
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* Copyright (C) 2000 Timo Hummel <timo.hummel@sap.com>
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* Tom Braun <braunt@fh-konstanz.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "akcrash.h"
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#include "akdebug.h"
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#include <QtCore/QString>
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#include <string.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <config-akonadi.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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QString akBacktrace()
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{
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QString s;
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/* FIXME: is there an equivalent for windows? */
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#ifdef Backtrace_FOUND
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void *trace[256];
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int n = backtrace( trace, 256 );
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if ( !n ) {
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return s;
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}
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char **strings = backtrace_symbols( trace, n );
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s = QLatin1String( "[\n" );
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for ( int i = 0; i < n; ++i ) {
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s += QString::number( i ) +
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QLatin1String( ": " ) +
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QLatin1String( strings[i] ) + QLatin1String( "\n" );
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}
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s += QLatin1String( "]\n" );
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if ( strings ) {
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free( strings );
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}
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#endif
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return s;
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}
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static AkonadiCrash::HandlerType s_emergencyMethod = 0;
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static AkonadiCrash::HandlerType s_shutdownMethod = 0;
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static int recursionCount = 0;
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void AkonadiCrash::setEmergencyMethod( HandlerType method )
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{
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s_emergencyMethod = method;
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}
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void AkonadiCrash::setShutdownMethod( HandlerType method )
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{
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s_shutdownMethod = method;
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}
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static void defaultCrashHandler( int sig )
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{
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++recursionCount;
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if ( recursionCount <= 2 ) {
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if ( sig != SIGTERM && sig != SIGINT ) {
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if ( recursionCount == 1 ) {
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akError() << akBacktrace();
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} else { // fall back to something more simple in case the other one crashed itself
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fprintf( stderr, "%s", akBacktrace().toLatin1().data() );
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}
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if ( s_emergencyMethod ) {
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s_emergencyMethod( sig );
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}
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} else {
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if ( s_shutdownMethod ) {
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s_shutdownMethod( sig );
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}
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}
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}
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#ifdef Q_CC_MINGW
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_Exit( 255 );
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#else
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_exit( 255 );
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#endif
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}
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void AkonadiCrash::init()
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{
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HandlerType handler = defaultCrashHandler;
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#ifdef Q_OS_UNIX
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if ( !handler ) {
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handler = SIG_DFL;
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}
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sigset_t mask;
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sigemptyset( &mask );
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#ifdef SIGSEGV
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signal( SIGSEGV, handler );
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sigaddset( &mask, SIGSEGV );
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#endif
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#ifdef SIGFPE
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signal( SIGFPE, handler );
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sigaddset( &mask, SIGFPE );
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#endif
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#ifdef SIGILL
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signal( SIGILL, handler );
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sigaddset( &mask, SIGILL );
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#endif
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#ifdef SIGABRT
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signal( SIGABRT, handler );
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sigaddset( &mask, SIGABRT );
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#endif
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#ifdef SIGTERM
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signal( SIGTERM, handler );
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sigaddset( &mask, SIGTERM );
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#endif
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#ifdef SIGINT
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signal( SIGINT, handler );
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sigaddset( &mask, SIGINT );
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#endif
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sigprocmask( SIG_UNBLOCK, &mask, 0 );
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#endif //Q_OS_UNIX
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}
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