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poll: Minimize overhead when polling single event #1396

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poll: Minimize overhead when polling single event #1396

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2a78d03
poll: Update code comments to reflect latest changes
Vudentz Sep 7, 2017
1b06614
poll: k_poll: Document -EINTR return
Vudentz Nov 20, 2017
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1 change: 1 addition & 0 deletions include/kernel.h
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Original file line number Diff line number Diff line change
Expand Up @@ -3944,6 +3944,7 @@ extern void k_poll_event_init(struct k_poll_event *event, u32_t type,
*
* @retval 0 One or more events are ready.
* @retval -EAGAIN Waiting period timed out.
* @retval -EINTR Poller thread has been interrupted.
*/

extern int k_poll(struct k_poll_event *events, int num_events,
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4 changes: 1 addition & 3 deletions kernel/poll.c
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Expand Up @@ -227,9 +227,7 @@ int k_poll(struct k_poll_event *events, int num_events, s32_t timeout)
/*
* If we're not polling anymore, it means that at least one event
* condition is met, either when looping through the events here or
* because one of the events registered has had its state changed, or
* that one of the objects we wanted to poll on already had a thread
* polling on it.
* because one of the events registered has had its state changed.
*/
if (!is_polling()) {
clear_event_registrations(events, last_registered, key);
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