nrf_802154_queue.h

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/*
 * Copyright (c) 2019, Nordic Semiconductor ASA
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 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.
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 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef NRF_802154_QUEUE_H__
#define NRF_802154_QUEUE_H__
 
#include <stdbool.h>
#include <stdint.h>
#include <stddef.h>
 
typedef struct
{
    void           * p_memory;
 
    uint8_t          item_size;
 
    uint8_t          capacity;
 
    volatile uint8_t wridx;
 
    volatile uint8_t rdidx;
} nrf_802154_queue_t;
 
void nrf_802154_queue_init(nrf_802154_queue_t * p_queue,
                           void               * p_memory,
                           size_t               memory_size,
                           size_t               item_size);
 
void * nrf_802154_queue_push_begin(const nrf_802154_queue_t * p_queue);
 
void nrf_802154_queue_push_commit(nrf_802154_queue_t * p_queue);
 
void * nrf_802154_queue_pop_begin(const nrf_802154_queue_t * p_queue);
 
void nrf_802154_queue_pop_commit(nrf_802154_queue_t * p_queue);
 
static inline bool nrf_802154_queue_is_empty(const nrf_802154_queue_t * p_queue)
{
    return (p_queue->wridx == p_queue->rdidx);
}
 
bool nrf_802154_queue_is_full(const nrf_802154_queue_t * p_queue);
 
#endif /* NRF_802154_QUEUE_H__ */