#include "FifoQueue.h"

#define FALSE	false
#define TRUE	true

struct FifoQueue Fas_Tasks;	//fas协议任务
struct FifoQueue Pub_Tasks; //公共任务

/*
使用:
QueueInit(&SysMsg);
if(QueueIn(&SysMsg,i) == QueueFull) break;
if(QueueOut(&SysMsg,&sh) == QueueEmpty) break;
*/

//Queue Init
void QueueInit ( struct FifoQueue *Queue )
{
    Queue->front = Queue->rear;//初始化时队列头队列首相连
    Queue->count = 0;   //队列计数为0
}

// Queue In
bool QueueIn ( struct FifoQueue *Queue, ElemType sdat ) //数据进入队列
{
    if ( ( Queue->front == Queue->rear ) && ( Queue->count == QueueSize ) )
    {
        // full //判断如果队列满了
        return FALSE;    //返回队列满的标志
    }
    else
    {
        // in
        Queue->dat[Queue->rear] = sdat;
        Queue->rear = ( Queue->rear + 1 ) % QueueSize;
        Queue->count = Queue->count + 1;
        return TRUE;
    }
}

// Queue Out
bool QueueOut ( struct FifoQueue *Queue, ElemType *sdat )
{
    if ( ( Queue->front == Queue->rear ) && ( Queue->count == 0 ) )
    {
        // empty
        return FALSE;
    }
    else
    {
        // out
        *sdat = Queue->dat[Queue->front];
        Queue->front = ( Queue->front + 1 ) % QueueSize;
        Queue->count = Queue->count - 1;
        return TRUE;
    }
}