/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_config.h"
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/* General quit handling code for SDL */
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#include "SDL_events.h"
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#include "SDL_events_c.h"
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#ifdef HAVE_SIGNAL_H
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static void
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SDL_HandleSIG(int sig)
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{
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/* Reset the signal handler */
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signal(sig, SDL_HandleSIG);
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/* Signal a quit interrupt */
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SDL_SendQuit();
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}
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#endif /* HAVE_SIGNAL_H */
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/* Public functions */
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int
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SDL_QuitInit(void)
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{
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#ifdef HAVE_SIGACTION
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struct sigaction action;
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sigaction(SIGINT, NULL, &action);
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#ifdef HAVE_SA_SIGACTION
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if ( action.sa_handler == SIG_DFL && action.sa_sigaction == (void*)SIG_DFL ) {
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#else
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if ( action.sa_handler == SIG_DFL ) {
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#endif
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action.sa_handler = SDL_HandleSIG;
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sigaction(SIGINT, &action, NULL);
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}
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sigaction(SIGTERM, NULL, &action);
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#ifdef HAVE_SA_SIGACTION
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if ( action.sa_handler == SIG_DFL && action.sa_sigaction == (void*)SIG_DFL ) {
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#else
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if ( action.sa_handler == SIG_DFL ) {
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#endif
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action.sa_handler = SDL_HandleSIG;
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sigaction(SIGTERM, &action, NULL);
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}
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#elif HAVE_SIGNAL_H
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void (*ohandler) (int);
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/* Both SIGINT and SIGTERM are translated into quit interrupts */
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ohandler = signal(SIGINT, SDL_HandleSIG);
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if (ohandler != SIG_DFL)
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signal(SIGINT, ohandler);
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ohandler = signal(SIGTERM, SDL_HandleSIG);
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if (ohandler != SIG_DFL)
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signal(SIGTERM, ohandler);
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#endif /* HAVE_SIGNAL_H */
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/* That's it! */
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return (0);
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}
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void
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SDL_QuitQuit(void)
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{
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#ifdef HAVE_SIGACTION
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struct sigaction action;
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sigaction(SIGINT, NULL, &action);
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if ( action.sa_handler == SDL_HandleSIG ) {
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action.sa_handler = SIG_DFL;
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sigaction(SIGINT, &action, NULL);
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}
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sigaction(SIGTERM, NULL, &action);
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if ( action.sa_handler == SDL_HandleSIG ) {
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action.sa_handler = SIG_DFL;
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sigaction(SIGTERM, &action, NULL);
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}
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#elif HAVE_SIGNAL_H
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void (*ohandler) (int);
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ohandler = signal(SIGINT, SIG_DFL);
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if (ohandler != SDL_HandleSIG)
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signal(SIGINT, ohandler);
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ohandler = signal(SIGTERM, SIG_DFL);
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if (ohandler != SDL_HandleSIG)
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signal(SIGTERM, ohandler);
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#endif /* HAVE_SIGNAL_H */
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}
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/* This function returns 1 if it's okay to close the application window */
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int
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SDL_SendQuit(void)
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{
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return SDL_SendAppEvent(SDL_QUIT);
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}
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/* vi: set ts=4 sw=4 expandtab: */
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