The Linux Kernel API | ||
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Make the current task sleep until timeout jiffies have elapsed. The routine will return immediately unless the current task state has been set (see set_current_state).
You can set the task state as follows -
TASK_UNINTERRUPTIBLE
- at least timeout jiffies are guaranteed to
pass before the routine returns. The routine will return 0
TASK_INTERRUPTIBLE
- the routine may return early if a signal is
delivered to the current task. In this case the remaining time
in jiffies will be returned, or 0 if the timer expired in time
The current task state is guaranteed to be TASK_RUNNING when this routine returns.
Specifying a timeout value of MAX_SCHEDULE_TIMEOUT
will schedule
the CPU away without a bound on the timeout. In this case the return
value will be MAX_SCHEDULE_TIMEOUT
.
In all cases the return value is guaranteed to be non-negative.
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Delaying, scheduling, and timer routines | Up | set_cpus_allowed |