wait_event_timeout
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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.

The function returns 0 if the timeout elapsed, or the remaining jiffies (at least 1) if the condition evaluated to true before the timeout elapsed.

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