Section (3) sigwait
sigwait — wait for a signal
||const sigset_t *set,|
suspends execution of the calling thread until one of the
signals specified in the signal set
set becomes pending. The
function accepts the signal (removes it from the pending list
of signals), and returns the signal number in
The operation of
is the same as sigwaitinfo(2), except
sigwait() returns only the signal number, rather than a siginfo_t structure describing the signal.
The return values of the two functions are different.
returns 0. On error, it returns a positive error number
(listed in ERRORS).
For an explanation of the terms used in this section, see attributes(7).
sigwait() is implemented
The glibc implementation of
sigwait() silently ignores attempts to wait
for the two real-time signals that are used internally by the
NPTL threading implementation. See nptl(7) for details.
This page is part of release 4.16 of the Linux
man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
Copyright (c) 2008, Linux Foundation, written by Michael Kerrisk
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 the terms of a
permission notice identical to this one.
Since the Linux kernel and libraries are constantly changing, this
manual page may be incorrect or out-of-date. The author(s) assume no
responsibility for errors or omissions, or for damages resulting from
the use of the information contained herein. The author(s) may not
have taken the same level of care in the production of this manual,
which is licensed free of charge, as they might when working
Formatted or processed versions of this manual, if unaccompanied by
the source, must acknowledge the copyright and authors of this work.