root / proj / libs / classes / include / queue.h @ 351
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| 1 | 277 | up20180642 | #ifndef QUEUE_H_INCLUDED
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| 2 | #define QUEUE_H_INCLUDED
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| 3 | |||
| 4 | 316 | up20180642 | /**
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| 5 | 328 | up20180642 | * @defgroup queue_t queue_t
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| 6 | 331 | up20180642 | * @ingroup classes
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| 7 | 328 | up20180642 | * @brief Queue module
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| 8 | 316 | up20180642 | *
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| 9 | * Can be used like a C++ std::queue.
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| 10 | * A queue_t is an interface for a list_t that simulates a FIFO.
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| 11 | 328 | up20180642 | *
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| 12 | * @{
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| 13 | 316 | up20180642 | */
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| 14 | 328 | up20180642 | |
| 15 | 338 | up20180642 | /**
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| 16 | * @brief Queue.
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| 17 | */
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| 18 | 277 | up20180642 | typedef struct queue queue_t; |
| 19 | |||
| 20 | 316 | up20180642 | /**
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| 21 | * @brief Construct empty queue.
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| 22 | * @return Pointer to created queue
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| 23 | */
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| 24 | 277 | up20180642 | queue_t* (queue_ctor )(void);
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| 25 | 316 | up20180642 | /**
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| 26 | * @brief Destruct queue.
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| 27 | *
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| 28 | * A queue can only be destroyed once it is empty.
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| 29 | * This is because a queue stores void*, whose memory most likely need to be free'd.
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| 30 | * @param q Pointer to queue to be destroyed
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| 31 | * @return SUCCESS if the destruction was successful, other value otherwise.
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| 32 | */
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| 33 | 277 | up20180642 | int (queue_dtor )(queue_t *q);
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| 34 | 316 | up20180642 | /**
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| 35 | * @brief Get size of the queue.
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| 36 | * @param q Pointer to queue
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| 37 | * @return Size of the queue
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| 38 | */
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| 39 | 277 | up20180642 | size_t (queue_size )(const queue_t *q);
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| 40 | 316 | up20180642 | /**
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| 41 | * @brief Know if queue is empty or not.
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| 42 | * @param q Pointer to queue
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| 43 | * @return true if the queue is empty (size is zero), false otherwise
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| 44 | */
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| 45 | 277 | up20180642 | int (queue_empty)(const queue_t *q); |
| 46 | 316 | up20180642 | /**
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| 47 | * @brief Insert new value in the queue.
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| 48 | * @param q Pointer to queue
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| 49 | * @param val Value to be inserted
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| 50 | */
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| 51 | 277 | up20180642 | void (queue_push )(queue_t *q, void *val); |
| 52 | 316 | up20180642 | /**
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| 53 | * @brief Get next element in the queue.
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| 54 | * @param q Pointer to queue
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| 55 | * @return Value at the beginning of the queue
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| 56 | */
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| 57 | 277 | up20180642 | void* (queue_top )(const queue_t *q); |
| 58 | 316 | up20180642 | /**
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| 59 | * @brief Erase next element of the queue.
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| 60 | * @param q Pointer to queue
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| 61 | */
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| 62 | 277 | up20180642 | void (queue_pop )(queue_t *q);
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| 63 | |||
| 64 | 328 | up20180642 | /**
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| 65 | * @}
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| 66 | */
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| 67 | |||
| 68 | 277 | up20180642 | #endif //QUEUE_H_INCLUDED |