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msleep(9) [osx man page]

MSLEEP(9)							   Driver Basics							 MSLEEP(9)

msleep - sleep safely even with waitqueue interruptions SYNOPSIS
void msleep(unsigned int msecs); ARGUMENTS
msecs Time in milliseconds to sleep for COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 MSLEEP(9)

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SCHEDULE_HRTIMEOUT_R(9) 					   Driver Basics					   SCHEDULE_HRTIMEOUT_R(9)

schedule_hrtimeout_range - sleep until timeout SYNOPSIS
int __sched schedule_hrtimeout_range(ktime_t * expires, unsigned long delta, const enum hrtimer_mode mode); ARGUMENTS
expires timeout value (ktime_t) delta slack in expires timeout (ktime_t) mode timer mode, HRTIMER_MODE_ABS or HRTIMER_MODE_REL DESCRIPTION
Make the current task sleep until the given expiry time has elapsed. The routine will return immediately unless the current task state has been set (see set_current_state). The delta argument gives the kernel the freedom to schedule the actual wakeup to a time that is both power and performance friendly. The kernel give the normal best effort behavior for "expires+delta", but may decide to fire the timer earlier, but no earlier than expires. You can set the task state as follows - TASK_UNINTERRUPTIBLE - at least timeout time is guaranteed to pass before the routine returns. TASK_INTERRUPTIBLE - the routine may return early if a signal is delivered to the current task. The current task state is guaranteed to be TASK_RUNNING when this routine returns. Returns 0 when the timer has expired otherwise -EINTR COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 SCHEDULE_HRTIMEOUT_R(9)
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