source: svn/trunk/newcon3bcm2_21bu/magnum/syslib/synclib/7552/bsynclib_resource_pool.c

#include "bstd.h"
#include "bsyslib_list.h"
#include "bsynclib_resource_pool.h"

BDBG_MODULE(synclib_resource_pool);

BSYNClib_ResourcePool * BSYNClib_ResourcePool_Create(void)
{
        BSYNClib_ResourcePool * psPool;

        BDBG_ENTER(BSYNClib_ResourcePool_Create);

        psPool = (BSYNClib_ResourcePool *)BKNI_Malloc(sizeof(BSYNClib_ResourcePool));

        if (psPool)
        {
                psPool->hResources = BSYSlib_List_Create();
                psPool->hFree = BSYSlib_List_Create();
        }

        BDBG_LEAVE(BSYNClib_ResourcePool_Create);
        return psPool;
}

void BSYNClib_ResourcePool_Destroy(BSYNClib_ResourcePool * psPool)
{
        BDBG_ENTER(BSYNClib_ResourcePool_Destroy);

        BDBG_ASSERT(psPool);

        BSYSlib_List_Destroy(psPool->hResources);
        BSYSlib_List_Destroy(psPool->hFree);

        BKNI_Free(psPool);

        BDBG_LEAVE(BSYNClib_ResourcePool_Destroy);
}

void BSYNClib_ResourcePool_Add(BSYNClib_ResourcePool * psPool, void * pvResource)
{
        BDBG_ENTER(BSYNClib_ResourcePool_Add);

        BDBG_ASSERT(psPool);
        BDBG_ASSERT(pvResource);

        BSYSlib_List_AddElement(psPool->hResources, pvResource);
        BSYSlib_List_AddElement(psPool->hFree, pvResource);

        BDBG_LEAVE(BSYNClib_ResourcePool_Add);
}

void BSYNClib_ResourcePool_Remove(BSYNClib_ResourcePool * psPool, void * pvResource)
{
        BDBG_ENTER(BSYNClib_ResourcePool_Remove);

        BDBG_ASSERT(psPool);
        BDBG_ASSERT(pvResource);

        BSYSlib_List_RemoveElement(psPool->hResources, pvResource);
        BSYSlib_List_RemoveElement(psPool->hFree, pvResource);

        BDBG_LEAVE(BSYNClib_ResourcePool_Remove);
}

void * BSYNClib_ResourcePool_Acquire(BSYNClib_ResourcePool * psPool)
{
        void * pvResource = NULL;
        
        BDBG_ENTER(BSYNClib_ResourcePool_Acquire);

        BDBG_ASSERT(psPool);

        if (!BSYSlib_List_IsEmpty(psPool->hFree))
        {
                pvResource = BSYSlib_List_GetByIndex(psPool->hFree, 0);
                BSYSlib_List_RemoveElement(psPool->hFree, pvResource);
        }

        BDBG_LEAVE(BSYNClib_ResourcePool_Acquire);
        return pvResource;
}

void BSYNClib_ResourcePool_Release(BSYNClib_ResourcePool * psPool, void * pvResource)
{
        BDBG_ENTER(BSYNClib_ResourcePool_Release);

        BDBG_ASSERT(psPool);
        BDBG_ASSERT(pvResource);

        BSYSlib_List_AddElement(psPool->hFree, pvResource);

        BDBG_LEAVE(BSYNClib_ResourcePool_Release);
}