112 lines
2.3 KiB
C++
112 lines
2.3 KiB
C++
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997, 1998, 1999, 2000 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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/*
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SDL_sysmutex.cpp
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Epoc version by Markus Mertama (w@iki.fi)
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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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/* Mutex functions using the Win32 API */
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//#include <stdio.h>
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//#include <stdlib.h>
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#include<e32std.h>
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#include "SDL_error.h"
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#include "SDL_mutex.h"
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struct SDL_mutex
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{
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TInt handle;
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};
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extern TInt CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny*, TAny*);
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TInt NewMutex(const TDesC& aName, TAny* aPtr1, TAny*)
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{
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return ((RMutex*)aPtr1)->CreateGlobal(aName);
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}
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/* Create a mutex */
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SDL_mutex *SDL_CreateMutex(void)
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{
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RMutex rmutex;
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TInt status = CreateUnique(NewMutex, &rmutex, NULL);
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if(status != KErrNone)
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{
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SDL_SetError("Couldn't create mutex");
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}
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SDL_mutex* mutex = new /*(ELeave)*/ SDL_mutex;
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mutex->handle = rmutex.Handle();
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return(mutex);
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}
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/* Free the mutex */
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void SDL_DestroyMutex(SDL_mutex *mutex)
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{
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if ( mutex )
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{
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RMutex rmutex;
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rmutex.SetHandle(mutex->handle);
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rmutex.Signal();
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rmutex.Close();
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delete(mutex);
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mutex = NULL;
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}
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}
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/* Lock the mutex */
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int SDL_mutexP(SDL_mutex *mutex)
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{
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if ( mutex == NULL ) {
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SDL_SetError("Passed a NULL mutex");
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return -1;
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}
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RMutex rmutex;
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rmutex.SetHandle(mutex->handle);
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rmutex.Wait();
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return(0);
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}
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/* Unlock the mutex */
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int SDL_mutexV(SDL_mutex *mutex)
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{
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if ( mutex == NULL ) {
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SDL_SetError("Passed a NULL mutex");
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return -1;
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}
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RMutex rmutex;
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rmutex.SetHandle(mutex->handle);
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rmutex.Signal();
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return(0);
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}
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