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/*
* Copyright (c) 2016, Jiri Techet
*
* This source code is released for free distribution under the terms of the
* GNU General Public License version 2 or (at your option) any later version.
*
* Defines generic pool for object reuse reducing the amount of allocations
* and deallocations.
*/
/*
* INCLUDE FILES
*/
#include "general.h" /* must always come first */
#include "routines.h"
#include "objpool.h"
/*
* DATA DECLARATIONS
*/
struct sObjPool {
ptrArray *array;
unsigned int size;
objPoolCreateFunc createFunc;
objPoolDeleteFunc deleteFunc;
objPoolClearFunc clearFunc;
void *createArg;
};
/*
* FUNCTION DEFINITIONS
*/
extern objPool *objPoolNew (unsigned int size,
objPoolCreateFunc createFunc, objPoolDeleteFunc deleteFunc, objPoolClearFunc clearFunc,
void *createArg)
{
objPool* const result = xMalloc (1, objPool);
result->array = ptrArrayNew (deleteFunc);
result->size = size;
result->createFunc = createFunc;
result->deleteFunc = deleteFunc;
result->clearFunc = clearFunc;
result->createArg = createArg;
return result;
}
extern void objPoolDelete (objPool *pool)
{
ptrArrayDelete (pool->array);
eFree (pool);
}
extern void *objPoolGet (objPool *pool)
{
void *obj;
if (ptrArrayCount (pool->array) > 0)
{
obj = ptrArrayLast (pool->array);
ptrArrayRemoveLast (pool->array);
}
else
obj = pool->createFunc (pool->createArg);
if (pool->clearFunc)
pool->clearFunc (obj);
return obj;
}
extern void objPoolPut (objPool *pool, void *obj)
{
if (obj == NULL)
return;
if (ptrArrayCount (pool->array) < pool->size)
ptrArrayAdd (pool->array, obj);
else
pool->deleteFunc (obj);
}
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