sleep(3) [netbsd man page]

SLEEP(3)						   BSD Library Functions Manual 						  SLEEP(3)

NAME

     sleep -- suspend process execution for interval of seconds

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <unistd.h>

     unsigned int
     sleep(unsigned int seconds);

DESCRIPTION

     The sleep() function suspends execution of the calling process until either the number of seconds specified by seconds have elapsed or a sig-
     nal is delivered to the calling process and its action is to invoke a signal-catching function or to terminate the process.  The suspension
     time may be longer than requested due to the scheduling of other activity by the system.

RETURN VALUES

     If the sleep() function returns because the requested time has elapsed, the value returned will be zero.  If the sleep() function returns due
     to the delivery of a signal, the value returned will be the unslept amount (the request time minus the time actually slept) in seconds.

SEE ALSO

     nanosleep(2), usleep(3)

STANDARDS

     The sleep() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').

HISTORY

     A sleep() function appeared in Version 7 AT&T UNIX.

BSD
								   June 4, 1993 							       BSD

sleep(3)						     Library Functions Manual							  sleep(3)

NAME

       sleep - Suspends execution for an interval of time

LIBRARY

       Standard C Library (libc.a) Threads Library (libpthreads.a)

SYNOPSIS

       #include <unistd.h>

       unsigned int sleep (	 unsigned int seconds );

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       sleep():  XPG4, XPG4-UNIX

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Specifies the number of seconds to sleep.

DESCRIPTION

       The  sleep()  function  suspends  execution  of	a process for the interval specified by the seconds parameter.	The suspension time may be
       longer than requested due to the scheduling of other activity by the system.

       In a multi-threaded environment, the sleep() function is redefined so that only the calling thread is suspended.

RETURN VALUES

       If the sleep() function returns because the requested time has elapsed, it returns 0 (zero).  If the sleep() function  returns  because	it
       caught a  signal, the function returns the number of seconds remaining in the suspension.

RELATED INFORMATION

       Commands: wall(1), shutdown(8) sleep(1)

       Functions: sigaction(2), alarm(3), pause(3)

       Standards: standards(5) delim off

																	  sleep(3)