45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/*
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* ring_queue.h
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*
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* Created on: 2024年6月21日
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* Author: psx
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*/
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#ifndef DRIVERS_RINGQUEUE_RING_QUEUE2_H_
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#define DRIVERS_RINGQUEUE_RING_QUEUE2_H_
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//#define RING_QUEUE_DEBUG //定义本宏会打印RingQueue的调试信息
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//typedef unsigned char RQ_ElementType2;//元素类型
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typedef uint16_t RQ_ElementType2;//元素类型
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typedef struct _ring_queue2
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{
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RQ_ElementType2 *elems;
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int size;
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volatile int front, rear;
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}RingQueue2;
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//初始化队列,需传入保存队列状态的结构q，队列使用的buffer和buffer大小
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int InitRingQueue2(RingQueue2 *q, RQ_ElementType2 *buff, int size);
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#define RingQueueFull2(q) (((q)->rear+1) % (q)->size == (q)->front)
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#define RingQueueEmpty2(q) ((q)->front == (q)->rear)
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//遍历队列,
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//消费者使用，故对生产者可能修改的rear先读取缓存
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int ShowRingQueue2(RingQueue2 *q);
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//向队尾插入元素e
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int InRingQueue2(RingQueue2 *q,RQ_ElementType2 e);
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//从队首删除元素
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int OutRingQueue2(RingQueue2 *q, RQ_ElementType2 *e);
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//队列中的元素个数
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int RingQueueLength2(RingQueue2 *q);
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#endif /* DRIVERS_RINGQUEUE_RING_QUEUE_H_ */
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