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#ifndef __INC_MVMEMPOOL_H__
#define __INC_MVMEMPOOL_H__

#define NUM_OF_POOLS		4
#define NUM_OF_NODES		30
#define POOL_DATA_SZ_1		32
#define POOL_DATA_SZ_2		160
#define POOL_DATA_SZ_3		320
#define POOL_DATA_SZ_4		540

#define MAX_DATA_SZ(hd)		((hd)->data_sz - sizeof(pool_node))

#undef MV_MEMPOOL_STAT

#ifdef MV_MEMPOOL_STAT
typedef struct _pool_stat {
	unsigned long	alloc_req;	/* total number of allocations */
	unsigned long	free_req;	/* total number of releases */
	unsigned long	allocated;	/* number of currently allocated buffers */
	unsigned long	max_alloc;  /* muximum number of outstanding allocations */

} pool_stat;
#endif

typedef struct _pool_node {
	struct _pool_node		*next;
	struct _pool_node		*prev;
	struct _pool_head		*head;
	unsigned char			data;

} pool_node;

typedef struct _pool_head {
	pool_node		*free_list;
	pool_node		*busy_list;
	unsigned int	data_sz;
#ifdef MV_MEMPOOL_STAT
	pool_stat		stat;
#endif

} pool_head;

pool_head * mpool_init (void);
void * mpool_alloc (pool_head *head, int size);
void * mpool_grow (pool_head *head, void *mr, int new_size);
void mpool_free (void *mr);
#ifdef MV_MEMPOOL_STAT
void mpool_print_stat(void);
void mpool_reset_stat(void);
#endif

#endif /* __INC_MVMEMPOOL_H__ */