waitqueue.c

[詳解]

/** @file
    @brief      待ちタスク制御

    これらの関数は非タスク状態からコールされる

    @date       2011.04.03
    @author     Takashi SHUDO
*/

#include "waitqueue.h"
#include "queue_opration.h"

//#define DEBUGKBITS 0x01
#include "dkprintf.h"


struct st_queue wait_queue_head;        ///< 待ちタスクキュー

void waitqueue_add(struct st_tcb *tcb)
{
        DKFPRINTF(0x01, "Wait PID=%d \"%s\"\n", tcb->id, tcb->name);

        add_queue(&wait_queue_head, (struct st_queue *)tcb);
}

struct st_tcb *waitqueue_wakeup(struct st_tcb *tcb)
{
        DKFPRINTF(0x01, "Wait wakeup PID=%d \"%s\"\n", tcb->id, tcb->name);

        if(check_queue(&wait_queue_head) == 0) {
                return (struct st_tcb *)0;
        }

        del_queue((struct st_queue *)tcb);

        return tcb;
}