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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2017-2018 Linaro Limited
*/
#ifndef ODP_ISHMBUDDY_INTERNAL_H_
#define ODP_ISHMBUDDY_INTERNAL_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include <odp/api/spinlock.h>
typedef struct _odp_ishm_pool_ctrl_t {
uint32_t element_sz; /* 0 for buddy pools, >0 for slab. */
int ishm_blk_idx; /* the block index returned by _ishm_resrve()*/
odp_spinlock_t lock; /* for pool access mutex */
void *user_addr; /* user pool area ('real user pool') */
union {
struct { /* things needed for buddy pools: */
uint8_t order; /* pool is 2^order bytes long */
uint8_t min_order; /*alloc won't go below 2^min_order*/
void **free_heads; /* 'order' free list heads. */
uint8_t *alloced_order; /* size of blocks, 0=free */
};
struct { /* things needed for slab pools: */
void *free_head; /* free element list head */
uint64_t nb_elem;/* total number of elements in pool */
};
};
} _odp_ishm_pool_ctrl_t;
typedef struct _odp_ishm_pool_t {
_odp_ishm_pool_ctrl_t ctrl; /* control part */
uint8_t mem[1]; /* area for heads, saved alloc'd orders, data*/
} _odp_ishm_pool_t;
_odp_ishm_pool_t *_odp_ishm_pool_create(const char *pool_name,
uint64_t size,
uint64_t min_alloc,
uint64_t max_alloc, int flags);
int _odp_ishm_pool_destroy(_odp_ishm_pool_t *pool);
void *_odp_ishm_pool_alloc(_odp_ishm_pool_t *pool, uint64_t size);
int _odp_ishm_pool_free(_odp_ishm_pool_t *pool, void *addr);
void _odp_ishm_pool_init(void);
#ifdef __cplusplus
}
#endif
#endif
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