示例#1
0
/**
 * @brief   Time management handler.
 * @note    This handler has to be invoked by a periodic ISR in order to
 *          reschedule the waiting threads.
 *
 * @iclass
 */
void nilSysTimerHandlerI(void) {

#if NIL_CFG_TIMEDELTA == 0
  thread_ref_t tr = &nil.threads[0];
  nil.systime++;
  do {
    /* Is the thread in a wait state with timeout?.*/
    if (tr->timeout > 0) {

      nilDbgAssert(!NIL_THD_IS_READY(tr),
                   "nilSysTimerHandlerI(), #1", "is ready");

     /* Did the timer reach zero?*/
      if (--tr->timeout == 0) {
        /* Timeout on semaphores requires a special handling because the
           semaphore counter must be incremented.*/
        if (NIL_THD_IS_WTSEM(tr))
          tr->u1.semp->cnt++;
        else if (NIL_THD_IS_SUSP(tr))
          tr->u1.trp = NULL;
        nilSchReadyI(tr, NIL_MSG_TMO);
      }
    }
    /* Lock released in order to give a preemption chance on those
       architectures supporting IRQ preemption.*/
    nilSysUnlockFromISR();
    tr++;
    nilSysLockFromISR();
#if WHG_MOD
  } while (tr < nil.idlep);
#else  /* WHG_MOD */
  } while (tr < &nil.threads[NIL_CFG_NUM_THREADS]);
示例#2
0
文件: nil.c 项目: Aljabri722/legoino
/**
 * @brief   Time management handler.
 * @note    This handler has to be invoked by a periodic ISR in order to
 *          reschedule the waiting threads.
 *
 * @special
 */
void nilSysTimerHandler(void) {
  Thread *tp;
  systime_t time;

  time = ++nil.systime;
  tp = &nil.threads[0];
  do {
    nilSysLockFromIsr();
    if (tp->timeout && (tp->wakeup.time == time)) {

#if WHG_PATCH
      nilDbgAssert(tp->waitobj.p != NULL,
                   "nilSysTimerHandler(), #1", "");
      /* Could add a field to Thread structure to indicate waitobj type. */
      if (tp->waitobj.thdp < nil.threads || tp->waitobj.thdp > nil.idlep) {
        /* Handle nilSemWaitTimeout. */
        tp->wakeup.msg = NIL_MSG_TMO;
        tp->waitobj.semp->cnt++;
      } else {
        /* Do nothing for nilThdSleep */
      }
#else /* WHG_PATCH */
      nilDbgAssert(tp->waitobj.p == NULL,
                   "nilSysTimerHandlerI(), #1", "");
#endif  /* WHG_PATCH */
      nilSchReadyI(tp);
    }
    nilSysUnlockFromIsr();
    tp++;
#if WHG_MOD
  } while (tp < nil.idlep);
#else  /* WHG_MOD */
  } while (tp < &nil.threads[NIL_CFG_NUM_THREADS]);