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NANOSLEEP(2)		    BSD	System Calls Manual		  NANOSLEEP(2)

NAME
     nanosleep -- suspend process execution for	an interval measured in
     nanoseconds

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <time.h>

     int
     nanosleep(const struct timespec *rqtp, struct timespec *rmtp);

DESCRIPTION
     Nanosleep() causes	the process to sleep for the specified time.  An un-
     masked signal will	cause it to terminate the sleep	early, regardless of
     the SA_RESTART value on the interrupting signal.

RETURN VALUES
     If	the nanosleep()	function returns because the requested time has
     elapsed, the value	returned will be zero.

     If	the nanosleep()	function returns due to	the delivery of	a signal, the
     value returned will be the	-1, and	the global variable errno will be set
     to	indicate the interruption.  If rmtp is non-NULL, the timespec struc-
     ture it references	is updated to contain the unslept amount (the request
     time minus	the time actually slept).

ERRORS
     The nanosleep() call fails	if:

     [EFAULT]		Either rqtp or rmtp points to memory that is not a
			valid part of the process address space.

     [EINTR]		nanosleep() was	interrupted by the delivery of a sig-
			nal.

     [EINVAL]		rqtp specified a nanosecond value less than zero or
			greater	than or	equal to 1000 million.

     [ENOSYS]		nanosleep() is not supported by	this implementation.

SEE ALSO
     sigsuspend(2), sleep(3)

STANDARDS
     The nanosleep() function conforms to IEEE Std 1003.1b-1993	("POSIX.1").

BSD				April 17, 1997				   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS

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