src/events/SDL_events_c.h
author Sam Lantinga <slouken@libsdl.org>
Sun, 21 Aug 2005 06:18:54 +0000
changeset 1123 28ac87a38c17
parent 769 b8d311d90021
child 1312 c9b51268668f
permissions -rw-r--r--
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
From: Jiri Svoboda
Subject: [SDL] signal handling bug

I encountered the following bug:
SDL doesn't reset signal handlers for SIGTERM and SIGINT, after calling SDL_Quit these remain hooked to the handler in SDL_quit.c, being translated into SDL_QUIT events.

Consequently an application that issues a SDL_Quit and remains running will ignore any SIGTERM or SIGINT., and specifically CTRL-C presses.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2004 Sam Lantinga
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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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    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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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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 "@(#) $Id$";
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#endif
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/* Useful functions and variables from SDL_events.c */
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#include "SDL_events.h"
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/* Start and stop the event processing loop */
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extern int SDL_StartEventLoop(Uint32 flags);
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extern void SDL_StopEventLoop(void);
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extern void SDL_QuitInterrupt(void);
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extern void SDL_Lock_EventThread();
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extern void SDL_Unlock_EventThread();
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extern Uint32 SDL_EventThreadID(void);
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/* Event handler init routines */
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extern int  SDL_AppActiveInit(void);
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extern int  SDL_KeyboardInit(void);
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extern int  SDL_MouseInit(void);
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extern int  SDL_QuitInit(void);
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/* Event handler quit routines */
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extern void SDL_AppActiveQuit(void);
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extern void SDL_KeyboardQuit(void);
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extern void SDL_MouseQuit(void);
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extern void SDL_QuitQuit(void);
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/* The event filter function */
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extern SDL_EventFilter SDL_EventOK;
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/* The array of event processing states */
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extern Uint8 SDL_ProcessEvents[SDL_NUMEVENTS];
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/* Internal event queueing functions
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   (from SDL_active.c, SDL_mouse.c, SDL_keyboard.c, SDL_quit.c, SDL_events.c)
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 */
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extern int SDL_PrivateAppActive(Uint8 gain, Uint8 state);
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extern int SDL_PrivateMouseMotion(Uint8 buttonstate, int relative,
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						Sint16 x, Sint16 y);
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extern int SDL_PrivateMouseButton(Uint8 state, Uint8 button,Sint16 x,Sint16 y);
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extern int SDL_PrivateKeyboard(Uint8 state, SDL_keysym *key);
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extern int SDL_PrivateResize(int w, int h);
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extern int SDL_PrivateExpose(void);
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extern int SDL_PrivateQuit(void);
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extern int SDL_PrivateSysWMEvent(SDL_SysWMmsg *message);
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/* Used by the activity event handler to remove mouse focus */
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extern void SDL_ResetMouse(void);
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/* Used by the activity event handler to remove keyboard focus */
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extern void SDL_ResetKeyboard(void);
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/* Used by the event loop to queue pending keyboard repeat events */
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extern void SDL_CheckKeyRepeat(void);
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/* Used by the OS keyboard code to detect whether or not to do UNICODE */
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#ifndef DEFAULT_UNICODE_TRANSLATION
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#define DEFAULT_UNICODE_TRANSLATION 0	/* Default off because of overhead */
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#endif
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extern int SDL_TranslateUNICODE;