#include <lcsignal.h> int sigprocmask(int block, const sigset_t *newset, sigset_t *oldset);The synopsis for the POSIX implementation is
#include <signal.h> int sigprocmask(int block, const sigset_t *newset, sigset_t *oldset);You should use
<signal.h> only if an appropriate feature test
macro has been defined.
sigprocmask modifies the signal mask of the calling program.
block specifies the type of modification. Values for block
are
newset should be blocked (other
signals are not changed).
newset should not be blocked
(other signals are not changed).
newset
should be blocked.
The newset and oldset arguments are both pointers
to structures of type sigset_t, which is declared in
<lcsignal.h> and <signal.h>. The newset
argument is the new set of
signals that should be blocked or unblocked. If newset is NULL, then the
mask is not changed. oldset is a pointer to a signal set where the
previous set of blocked signals is to be stored. If oldset is NULL,
the previous signal mask is not stored.
You can use the sigprocmask function to change the blocking
of signals that are managed by either SAS/C or OpenEdition. If
oesigsetup has not been called, any attempt to change the
blocking status of signals managed by OpenEdition is ignored.
sigprocmask returns 0 if it is successful and
- 1 if it is not successful.
sigsetjmp.
sigaddset, sigsuspend
Copyright (c) 1998 SAS Institute Inc. Cary, NC, USA. All rights reserved.