table of contents
| WAIT_EVENT_TIMEOUT(9) | Driver Basics | WAIT_EVENT_TIMEOUT(9) |
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.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |