procqueue.e

/*************************************************************************
*                                                                        *
*   Export: procqueue.e                                                  *
*                                                                        *
*   realizzato dal Gruppo 17 di Lab2 Anno Accademico 1995/96             *
*                                                                        *
*   Lorenzo     Claudio       Valerio    Riccardo    Emiliano            *
*   Coronati    Lanconelli    Paolini    Solmi       Trentini            *
*                                                                        *
**************************************************************************/
#ifndef _PROCQ_E
#define _PROCQ_E

#include "types.h"
#include "proctree.h"

extern proc_t *remRdyQueue();
extern proc_t *outRdyQueue(/* proc_t *proc */);
extern thr_t *outWaitThread(/* thr_t **tp, thr_t *thread */);

#define EMPTYQUEUE(q)    ((q) == NULL)

#define NEXTRDYQUEUE() \
{\
    ready_queue = ready_queue->p_nextready;\
    run_proc = ready_queue->p_nextready;\
}

#define NEXTRDYTHREAD(q) \
{\
    (q) = (q)->t_next;\
    run_thread = (q)->t_next;\
}

#define insRdyQueue(proc) \
{ \
    if (ready_queue == NULL) \
        ready_queue = proc->p_nextready = proc; \
    else \
    { \
        proc->p_nextready = ready_queue->p_nextready; \
        ready_queue = ready_queue->p_nextready = proc; \
    } \
}

#define insWaitThread(tp, thread) \
{ \
    if (*(tp) == NULL) \
        *(tp) = (thread)->t_nextwait = thread; \
    else \
    { \
        (thread)->t_nextwait = (*(tp))->t_nextwait; \
        (*(tp))->t_nextwait = thread; \
    } \
}

#endif