| NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | NOTES | BUGS | SEE ALSO | COLOPHON | The Linux Programming Interface |
SIGPENDING(2) Linux Programmer's Manual SIGPENDING(2)
sigpending - examine pending signals
#include <signal.h>
int sigpending(sigset_t *set);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sigpending(): _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
sigpending() returns the set of signals that are pending for delivery
to the calling thread (i.e., the signals which have been raised while
blocked). The mask of pending signals is returned in set.
sigpending() returns 0 on success and -1 on error.
EFAULT set points to memory which is not a valid part of the process
address space.
POSIX.1-2001.
See sigsetops(3) for details on manipulating signal sets.
The set of signals that is pending for a thread is the union of the
set of signals that is pending for that thread and the set of signals
that is pending for the process as a whole; see signal(7).
A child created via fork(2) initially has an empty pending signal
set; the pending signal set is preserved across an execve(2).
In versions of glibc up to and including 2.2.1, there is a bug in the
wrapper function for sigpending() which means that information about
pending real-time signals is not correctly returned.
kill(2), sigaction(2), signal(2), sigprocmask(2), sigsuspend(2),
sigsetops(3), signal(7)
This page is part of release 3.51 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2008-10-04 SIGPENDING(2)
HTML rendering created 2013-05-17 by Michael Kerrisk, author of The Linux Programming Interface, maintainer of the Linux man-pages project
Hosting by jambit GmbH