ucx/cx/basic_mempool.h

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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/**
 * \file basic_mempool.h
 * \brief Implementation of a basic memory pool.
 * \author Mike Becker
 * \author Olaf Wintermann
 * \version 3.0
 * \copyright 2-Clause BSD License
 */

#ifndef UCX_BASIC_MEMPOOL_H
#define UCX_BASIC_MEMPOOL_H

#include "mempool.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * Basic array-based memory pool.
 */
struct cx_basic_mempool_s {
    /** Inherit base structure members. */
    CxMempool base;

    /** List of pointers to pooled memory. */
    void **data;

    /** Number of pooled memory items. */
    size_t ndata;

    /** Memory pool size. */
    size_t size;
};

/**
 * Creates a basic array-based memory pool.
 *
 * @param capacity the initial capacity of the pool
 * @return the created memory pool or \c NULL if allocation failed
 */
__attribute__((__warn_unused_result__))
CxMempool *cxBasicMempoolCreate(size_t capacity);

#ifdef __cplusplus
} // extern "C"
#endif

#endif // UCX_BASIC_MEMPOOL_H