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USLEEP
!!!USLEEP
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
NOTES
SEE ALSO
----
!!NAME


usleep - suspend execution for microsecond intervals
!!SYNOPSIS


__#include
__ ''usec''__);
int usleep(unsigned long__ ''usec''__); /* SUSv2 */
__
!!DESCRIPTION


The __usleep()__ function suspends execution of the
calling process for ''usec'' microseconds. The sleep may
be lengthened slightly by any system activity or by the time
spent processing the call.
!!RETURN VALUE


None (BSD). Or: 0 on success, -1 on error
(SUSv2).
!!ERRORS


EINTR


Interrupted by a signal.


EINVAL


''usec'' is not smaller than 1000000. (On systems where
that is considered an error.)
!!CONFORMING TO


BSD 4.3. The SUSv2 version returns int, and this is also the
prototype used by glibc 2.2.2. Only the EINVAL error return
is documented by SUSv2.
!!NOTES


The interaction of this function with SIGALRM and other
timer functions such as ''sleep''(), ''alarm''(),
''setitimer''(), ''nanosleep''() is unspecified. This
function is obsolete. Use nanosleep(2) or
setitimer(2) instead.
!!SEE ALSO


alarm(2), getitimer(2), nanosleep(2),
select(2), setitimer(2),
sleep(3)
----

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Last edited on Tuesday, June 4, 2002 12:24:39 am by "perry"

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