/*******************************************************************
Copyright (C):
File name    :    PRIO_QUEUE.C
DESCRIPTION  :
AUTHOR       :
Version      :    1.0
Date         :    2014/02/26
Others       :
History      :
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1) Date: 2014/02/26         Author: ChenDajie
   content:

*******************************************************************/
#include "PRIO_QUEUE_Iec10x.h"
#include "common_datatype.h"
#include "iec10x.h"
#include "includes.h"
#include "project_var.h"
#include <stdio.h>

extern PIEC10X_T          IEC10X;
extern Iec10x_PrioQueue_T Iec10x_PrioQueueArray[IEC10X_PRIO_MAX];

#ifdef PRIO_QUEUE

/*******************************************************************************
* Function Name  : HighestPrio
* Description    :
* Input          : None
* Output         : None
* Return         : RET_ERROR failure
                   len sucess
*******************************************************************************/
char IEC10X_HighestPrio(void)
{

    int     i, prio;
    uint8_t flag = 0;
    prio         = -1;
    // LOG("%s \r\n",__FUNCTION__);
    for (i = 0; i < IEC10X_PRIO_MAX; i++)
    {
        if (Iec10x_PrioQueueArray[i].ElementNum > 0 && !flag)
        {
            // return i;
            prio = i;
            flag = 1;
            LOG("<%s>Prio[%d],Num%d. \n", __FUNCTION__, i, Iec10x_PrioQueueArray[i].ElementNum);
        }
        LOG("[%d]%d.", i, Iec10x_PrioQueueArray[i].ElementNum);
    }
    LOG("out(%d)\r\n", prio);
    return prio;
}

void IEC10X_PrioInitQueue(Iec10x_PrioQueue_T *PrioQueue)
{

    PrioQueue->Header     = NULL;
    PrioQueue->Tail       = NULL;
    PrioQueue->ElementNum = 0;
}
uint8_t IEC10X_PrioEnQueue(Iec10x_PrioQueue_T *QueueHdr, Iec10x_PrioNode_T *new_p)
{

    new_p->Next = NULL;

    if (QueueHdr->Header == NULL)
    {
        QueueHdr->Header = new_p;
        QueueHdr->Tail   = new_p;
    }
    else
    {
        QueueHdr->Tail->Next = new_p;
        QueueHdr->Tail       = new_p;
    }

    QueueHdr->ElementNum++;
    // LOG("%s ElementNum(%d) \r\n",__FUNCTION__,QueueHdr->ElementNum);
    return RET_SUCESS;
}

Iec10x_PrioNode_T *IEC10X_PrioDeQueue(Iec10x_PrioQueue_T *QueueHdr)
{

    Iec10x_PrioNode_T *PrioNode_DeQ;
    if (QueueHdr->Header == NULL)
    {
        // LOG("PrioDeQueue,error \r\n");
        return NULL;
    }
    PrioNode_DeQ = QueueHdr->Header;

    QueueHdr->Header = QueueHdr->Header->Next;
    if (QueueHdr->Header == NULL)
    {
        QueueHdr->Tail = NULL;
    }

    // LOG("PrioDeQueue(%d) \r\n",PrioNode_DeQ->Length);

    return PrioNode_DeQ;
}

Iec10x_PrioNode_T *IEC10X_PrioFindQueueHead(Iec10x_PrioQueue_T *QueueHdr)
{

    Iec10x_PrioNode_T *PrioNode_DeQ;
    if (QueueHdr->Header == NULL)
    {
        // LOG("PrioDeQueue,error \r\n");
        return NULL;
    }
    PrioNode_DeQ = QueueHdr->Header;

    // LOG("PrioDeQueue(%d) \r\n",PrioNode_DeQ->Length);

    return PrioNode_DeQ;
}

void *IEC10X_PeekQueue(Iec10x_PrioQueue_T *QueueHdr)
{

    if (QueueHdr->Header == NULL)
    {
        // LOG("   ");
        return NULL;
    }
    return QueueHdr->Header->value;
}

int IEC10X_Prio_IsEmptyQueue(Iec10x_PrioQueue_T *QueueHdr)
{

    if (QueueHdr->Header == NULL)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}

void IEC10X_Prio_ClearQueue(Iec10x_PrioQueue_T *QueueHdr)
{

    Iec10x_PrioNode_T *p = QueueHdr->Header;
    while (p != NULL)
    {
        QueueHdr->Header = QueueHdr->Header->Next;
        IEC10X->Free(p);
        p = QueueHdr->Header;
    }
    QueueHdr->Tail       = NULL;
    QueueHdr->ElementNum = 0;
    return;
}

#endif