/** * OpenAL cross platform audio library * Copyright (C) 1999-2007 by authors. * 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 Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * Or go to http://www.gnu.org/copyleft/lgpl.html */ #include "config.h" #include <stdlib.h> #include "alMain.h" #include "alThunk.h" static ALenum *ThunkArray; static ALuint ThunkArraySize; static RWLock ThunkLock; void ThunkInit(void) { RWLockInit(&ThunkLock); ThunkArraySize = 1; ThunkArray = calloc(1, ThunkArraySize * sizeof(*ThunkArray)); } void ThunkExit(void) { free(ThunkArray); ThunkArray = NULL; ThunkArraySize = 0; } ALenum NewThunkEntry(ALuint *index) { ALenum *NewList; ALuint i; ReadLock(&ThunkLock); for(i = 0;i < ThunkArraySize;i++) { if(ExchangeInt(&ThunkArray[i], AL_TRUE) == AL_FALSE) { ReadUnlock(&ThunkLock); *index = i+1; return AL_NO_ERROR; } } ReadUnlock(&ThunkLock); WriteLock(&ThunkLock); NewList = realloc(ThunkArray, ThunkArraySize*2 * sizeof(*ThunkArray)); if(!NewList) { WriteUnlock(&ThunkLock); ERR("Realloc failed to increase to %u enties!\n", ThunkArraySize*2); return AL_OUT_OF_MEMORY; } memset(&NewList[ThunkArraySize], 0, ThunkArraySize*sizeof(*ThunkArray)); ThunkArraySize *= 2; ThunkArray = NewList; ThunkArray[i] = AL_TRUE; WriteUnlock(&ThunkLock); *index = i+1; return AL_NO_ERROR; } void FreeThunkEntry(ALuint index) { ReadLock(&ThunkLock); if(index > 0 && index <= ThunkArraySize) ExchangeInt(&ThunkArray[index-1], AL_FALSE); ReadUnlock(&ThunkLock); }