| sleep(3) - phpMan
SLEEP(3) Linux Programmer's Manual SLEEP(3)
NAME
sleep - sleep for the specified number of seconds
SYNOPSIS
#include <unistd.h>
unsigned int sleep(unsigned int seconds);
DESCRIPTION
sleep() makes the calling thread sleep until seconds seconds have elapsed or a signal
arrives which is not ignored.
RETURN VALUE
Zero if the requested time has elapsed, or the number of seconds left to sleep, if the
call was interrupted by a signal handler.
CONFORMING TO
POSIX.1-2001.
BUGS
sleep() may be implemented using SIGALRM; mixing calls to alarm(2) and sleep() is a bad
idea.
Using longjmp(3) from a signal handler or modifying the handling of SIGALRM while sleeping
will cause undefined results.
SEE ALSO
alarm(2), nanosleep(2), signal(2), signal(7)
COLOPHON
This page is part of release 3.74 of the Linux man-pages project. A description of the
project, information about reporting bugs, and the latest version of this page, can be
found at http://www.kernel.org/doc/man-pages/.
GNU 2010-02-03 SLEEP(3)
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