Copyright (c) 2005 Michael Kerrisk based on earlier work by firstname.lastname@example.org and Mike Battersby <email@example.com> %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under ...
NAMEsigpending, rt_sigpending - examine pending signals
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.
RETURN VALUEsigpending() returns 0 on success and -1 on error. In the event of an error, errno is set to indicate the cause.
- set points to memory which is not a valid part of the process address space.
CONFORMING TOPOSIX.1-2001, POSIX.1-2008.
NOTESSee sigsetops(3) for details on manipulating signal sets.
If a signal is both blocked and has a disposition of "ignored", it is not added to the mask of pending signals when generated.
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).