RTT_PACKAGE_BTSTACK/src/btstack_memory_pool.h

/*
 * Copyright (C) 2014 BlueKitchen GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 * 4. Any redistribution, use, or modification is done solely for
 *    personal benefit and not for any commercial purpose or for
 *    monetary gain.
 *
 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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/*
 *  btstack_memory_pool.h
 *
 *  @Brief Fixed-size block allocation
 *
 *  @Assumption block_size >= sizeof(void *)
 *  @Assumption size of storage >= count * block_size
 *
 *  @Note minimal implementation, no error checking/handling
 */

#ifndef btstack_memory_pool_H
#define btstack_memory_pool_H

#if defined __cplusplus
extern "C" {
#endif

typedef void * btstack_memory_pool_t;

// initialize memory pool with with given storage, block size and count
void   btstack_memory_pool_create(btstack_memory_pool_t *pool, void * storage, int count, int block_size);

// get free block from pool, @returns NULL or pointer to block
void * btstack_memory_pool_get(btstack_memory_pool_t *pool);

// return previously reserved block to memory pool
void   btstack_memory_pool_free(btstack_memory_pool_t *pool, void * block);

#if defined __cplusplus
}
#endif

#endif // btstack_memory_pool_H