wait_event_timeout(9)

wait_event_timeout9

Sleep until a condition gets true or a timeout elapses

Usage

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

Overview

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.

Releases

2 releases since Debian 7 (Wheezy); the text changed 1 time.

  1. 7
  2. 8

From linux-manual-3.16 3.16.56-1+deb8u1 in Debian 8 (Jessie). Parsed by carta from the page's man source.