mirror of
https://github.com/dhewm/dhewm3.git
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163 lines
4.1 KiB
C++
163 lines
4.1 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#include "../../idlib/precompiled.h"
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#include "posix_public.h"
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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const int siglist[] = {
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SIGHUP,
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SIGQUIT,
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SIGILL,
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SIGTRAP,
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SIGIOT,
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SIGBUS,
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SIGFPE,
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SIGSEGV,
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SIGPIPE,
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SIGABRT,
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// SIGTTIN,
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// SIGTTOU,
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-1
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};
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const char *signames[] = {
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"SIGHUP",
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"SIGQUIT",
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"SIGILL",
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"SIGTRAP",
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"SIGIOT",
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"SIGBUS",
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"SIGFPE",
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"SIGSEGV",
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"SIGPIPE",
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"SIGABRT",
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// "SIGTTIN",
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// "SIGTTOUT"
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};
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static char fatalError[ 1024 ];
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/*
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================
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Posix_ClearSigs
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================
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*/
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void Posix_ClearSigs( ) {
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struct sigaction action;
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int i;
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/* Set up the structure */
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action.sa_handler = SIG_DFL;
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sigemptyset( &action.sa_mask );
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action.sa_flags = 0;
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i = 0;
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while ( siglist[ i ] != -1 ) {
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if ( sigaction( siglist[ i ], &action, NULL ) != 0 ) {
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Sys_Printf( "Failed to reset %s handler: %s\n", signames[ i ], strerror( errno ) );
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}
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i++;
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}
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}
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/*
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================
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sig_handler
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================
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*/
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static void sig_handler( int signum, siginfo_t *info, void *context ) {
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static bool double_fault = false;
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if ( double_fault ) {
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Sys_Printf( "double fault %s, bailing out\n", strsignal( signum ) );
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_exit( signum );
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}
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double_fault = true;
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// NOTE: see sigaction man page, could verbose the whole siginfo_t and print human readable si_code
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Sys_Printf( "signal caught: %s\nsi_code %d\n", strsignal( signum ), info->si_code );
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if ( fatalError[ 0 ] ) {
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Sys_Printf( "Was in fatal error shutdown: %s\n", fatalError );
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}
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Sys_Printf( "Trying to exit gracefully..\n" );
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Posix_SetExit( signum );
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common->Quit();
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}
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/*
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================
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Posix_InitSigs
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================
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*/
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void Posix_InitSigs( ) {
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struct sigaction action;
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int i;
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fatalError[0] = '\0';
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/* Set up the structure */
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action.sa_sigaction = sig_handler;
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sigemptyset( &action.sa_mask );
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action.sa_flags = SA_SIGINFO | SA_NODEFER;
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i = 0;
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while ( siglist[ i ] != -1 ) {
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if ( siglist[ i ] == SIGFPE ) {
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action.sa_sigaction = Sys_FPE_handler;
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if ( sigaction( siglist[ i ], &action, NULL ) != 0 ) {
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Sys_Printf( "Failed to set SIGFPE handler: %s\n", strerror( errno ) );
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}
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action.sa_sigaction = sig_handler;
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} else if ( sigaction( siglist[ i ], &action, NULL ) != 0 ) {
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Sys_Printf( "Failed to set %s handler: %s\n", signames[ i ], strerror( errno ) );
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}
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i++;
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}
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// if the process is backgrounded (running non interactively)
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// then SIGTTIN or SIGTOU could be emitted, if not caught, turns into a SIGSTP
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signal( SIGTTIN, SIG_IGN );
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signal( SIGTTOU, SIG_IGN );
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}
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/*
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==================
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Sys_SetFatalError
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==================
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*/
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void Sys_SetFatalError( const char *error ) {
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strncpy( fatalError, error, sizeof( fatalError ) );
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}
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