nanosleep man page on Tru64

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nanosleep(3)							  nanosleep(3)

NAME
       nanosleep  -  Suspends a process from execution for the specified timer
       interval (P1003.1b)

SYNOPSIS
       #include <time.h>

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

LIBRARY
       Realtime Library (librt.so, librt.a)

PARAMETERS
       A pointer to the timespec data structure that defines the time interval
       during  which the calling process is suspended.	A pointer to the time‐
       spec data structure that receives the amount of time remaining  in  the
       previously  requested  interval,	 or  zero  if  the  full  interval has
       elapsed.

DESCRIPTION
       The nanosleep function suspends a process until one  of	the  following
       conditions  is met: The time interval specified in rqtp has elapsed.  A
       signal is delivered to the calling process and the action is to deliver
       a signal to a signal-catching function (or to terminate the process).

       The  suspension	time may be longer than requested because the argument
       value is rounded up to an integer multiple of the clock resolution,  or
       due  to the scheduling of other activity. Except when it is interrupted
       by a signal, the suspension time is not less than the time specified by
       the rqtp argument (as measured by the system clock).

RETURN VALUES
       When  the  nanosleep  function  returns	because the requested time has
       elapsed, the call is successful and a value of 0 (zero) is returned.

       If the nanosleep function returns because it was interrupted by a  sig‐
       nal,  a value of -1 is returned.	 If the rmtp argument is not NULL, the
       timespec structure referenced by the call is  updated  to  contain  the
       time remaining in the interval.
	If the rmtp argument is NULL, the remaining time is not returned.

       On  an unsuccessful call, a value of -1 is returned and errno is set to
       indicate that an error occurred.

ERRORS
       The nanosleep  function	fails  under  the  following  conditions:  The
       nanosleep  function  was	 interrupted  by  a signal.  The rqtp argument
       specified a nanosecond value less than zero or greater than or equal to
       1000 million.

SEE ALSO
       Functions: sleep(1)

       Guide to Realtime Programming

								  nanosleep(3)
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