Name
wait_event_timeout —
sleep until a condition gets true or a timeout elapses
Synopsis
wait_event_timeout ( | wq, |
| | condition, |
| | timeout); |
Arguments
wq
the waitqueue to wait on
condition
a C expression for the event to wait for
timeout
timeout, in jiffies
Description
The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
condition evaluates to true. The condition is checked each time
the waitqueue wq is woken up.
wake_up has to be called after changing any variable that could
change the result of the wait condition.
Returns
0 if the condition evaluated to false after the timeout elapsed,
1 if the condition evaluated to true after the timeout elapsed,
or the remaining jiffies (at least 1) if the condition evaluated
to true before the timeout elapsed.