/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@devolution.com */ /* SDL_sysmutex.cpp Epoc version by Markus Mertama (w@iki.fi) */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id: SDL_sysmutex.c,v 1.1.2.3 2000/06/22 15:25:23 hercules Exp $"; #endif /* Mutex functions using the Win32 API */ //#include //#include #include #include "epoc_sdl.h" #include "SDL_error.h" #include "SDL_mutex.h" #ifdef EKA2 //??? struct SDL_mutex { TInt handle; }; #else struct _SDL_mutex { TInt handle; }; #endif extern TInt CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny*, TAny*); TInt NewMutex(const TDesC& aName, TAny* aPtr1, TAny*) { return ((RMutex*)aPtr1)->CreateGlobal(aName); } void DeleteMutex(TAny* aMutex) { SDL_DestroyMutex ((SDL_mutex*) aMutex); } /* Create a mutex */ SDL_mutex *SDL_CreateMutex(void) { RMutex rmutex; TInt status = CreateUnique(NewMutex, &rmutex, NULL); if(status != KErrNone) { SDL_SetError("Couldn't create mutex"); } SDL_mutex* mutex = new /*(ELeave)*/ SDL_mutex; mutex->handle = rmutex.Handle(); EpocSdlEnv::AppendCleanupItem(TSdlCleanupItem(DeleteMutex, mutex)); return(mutex); } /* Free the mutex */ void SDL_DestroyMutex(SDL_mutex *mutex) { if ( mutex ) { RMutex rmutex; rmutex.SetHandle(mutex->handle); if(rmutex.IsHeld()) { rmutex.Signal(); } rmutex.Close(); EpocSdlEnv::RemoveCleanupItem(mutex); delete(mutex); mutex = NULL; } } /* Lock the mutex */ int SDL_mutexP(SDL_mutex *mutex) { if ( mutex == NULL ) { SDL_SetError("Passed a NULL mutex"); return -1; } RMutex rmutex; rmutex.SetHandle(mutex->handle); rmutex.Wait(); return(0); } /* Unlock the mutex */ int SDL_mutexV(SDL_mutex *mutex) { if ( mutex == NULL ) { SDL_SetError("Passed a NULL mutex"); return -1; } RMutex rmutex; rmutex.SetHandle(mutex->handle); rmutex.Signal(); return(0); }