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ChibiOS
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Better comments. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@9173 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
Giovanni Di Sirio 2016-03-27 14:43:43 +00:00
parent 307d87bdec
commit b11ee36528
1 changed files with 21 additions and 15 deletions
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36
os/rt/src/chschd.c
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@ -287,25 +287,28 @@ thread_t *chSchReadyAheadI(thread_t *tp) {
* @sclass
*/
void chSchGoSleepS(tstate_t newstate) {
thread_t *otp;
thread_t *otp = currp;
chDbgCheckClassS();
otp = currp;
/* New state.*/
otp->state = newstate;
#if CH_CFG_TIME_QUANTUM > 0
/* The thread is renouncing its remaining time slices so it will have a new
time quantum when it will wakeup.*/
otp->preempt = (tslices_t)CH_CFG_TIME_QUANTUM;
#endif
/* Next thread in ready list becomes current.*/
currp = queue_fifo_remove(&ch.rlist.queue);
currp->state = CH_STATE_CURRENT;
/* Handling idle-enter hook.*/
if (currp->prio == IDLEPRIO) {
CH_CFG_IDLE_ENTER_HOOK();
}
/* The extracted thread is marked as current.*/
currp->state = CH_STATE_CURRENT;
/* Swap operation as tail call.*/
chSysSwitch(currp, otp);
}
@ -426,13 +429,15 @@ void chSchWakeupS(thread_t *ntp, msg_t msg) {
(void) chSchReadyI(ntp);
}
else {
currp = ntp;
otp = chSchReadyI(otp);
/* Handling idle-leave hook.*/
if (otp->prio == IDLEPRIO) {
CH_CFG_IDLE_LEAVE_HOOK();
}
/* The extracted thread is marked as current.*/
currp = ntp;
ntp->state = CH_STATE_CURRENT;
/* Swap operation as tail call.*/
@ -501,14 +506,15 @@ void chSchDoRescheduleBehind(void) {
/* Picks the first thread from the ready queue and makes it current.*/
currp = queue_fifo_remove(&ch.rlist.queue);
currp->state = CH_STATE_CURRENT;
/* Handling idle-leave hook.*/
if (otp->prio == IDLEPRIO) {
CH_CFG_IDLE_LEAVE_HOOK();
}
/* The extracted thread is marked as current.*/
currp->state = CH_STATE_CURRENT;
#if CH_CFG_TIME_QUANTUM > 0
/* It went behind peers so it gets a new time quantum.*/
otp->preempt = (tslices_t)CH_CFG_TIME_QUANTUM;
#endif
@ -533,13 +539,13 @@ void chSchDoRescheduleAhead(void) {
/* Picks the first thread from the ready queue and makes it current.*/
currp = queue_fifo_remove(&ch.rlist.queue);
currp->state = CH_STATE_CURRENT;
/* Handling idle-leave hook.*/
if (otp->prio == IDLEPRIO) {
CH_CFG_IDLE_LEAVE_HOOK();
}
/* The extracted thread is marked as current.*/
currp->state = CH_STATE_CURRENT;
/* Placing in ready list ahead of peers.*/
otp = chSchReadyAheadI(otp);
@ -562,13 +568,13 @@ void chSchDoReschedule(void) {
/* Picks the first thread from the ready queue and makes it current.*/
currp = queue_fifo_remove(&ch.rlist.queue);
currp->state = CH_STATE_CURRENT;
/* Handling idle-leave hook.*/
if (otp->prio == IDLEPRIO) {
CH_CFG_IDLE_LEAVE_HOOK();
}
/* The extracted thread is marked as current.*/
currp->state = CH_STATE_CURRENT;
#if CH_CFG_TIME_QUANTUM > 0
/* If CH_CFG_TIME_QUANTUM is enabled then there are two different scenarios
to handle on preemption: time quantum elapsed or not.*/