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


sigemptyset, sigfillset, sigaddset, sigdelset, sigismember - POSIX signal set operations.
!!SYNOPSIS


__#include __


__int sigemptyset(sigset_t
*__''set''__);__


__int sigfillset(sigset_t
*__''set''__);__


__int sigaddset(sigset_t *__''set''__, int__
''signum''__);__


__int sigdelset(sigset_t *__''set''__, int__
''signum''__);__


__int sigismember(const sigset_t *__''set''__,
int__ ''signum''__);__
!!DESCRIPTION


The sigsetops(3) functions allow the manipulation of
POSIX signal sets.


__sigemptyset__ initializes the signal set given by
''set'' to empty, with all signals excluded from the
set.


__sigfillset__ initializes ''set'' to full, including
all signals.


__sigaddset__ and __sigdelset__ add and delete
respectively signal ''signum'' from
''set''.


__sigismember__ tests whether ''signum'' is a member
of ''set.''
!!RETURN VALUE


__sigemptyset__, __sigfullset__, __sigaddset__ and
__sigdelset__ return 0 on success and -1 on
error.


__sigismember__ returns 1 if ''signum'' is a member of
''set'', 0 if ''signum'' is not a member, and -1 on
error.
!!ERRORS


__EINVAL__


''sig'' is not a valid signal.
!!CONFORMING TO


POSIX
!!SEE ALSO


sigaction(2), sigpending(2),
sigprocmask(2), sigsuspend(2)
----

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Last edited on Tuesday, June 4, 2002 12:24:34 am by "perry"

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