Name
sigwait — wait for a signal
Synopsis
#include <signal.h>
int
sigwait( |
const sigset_t *set, |
int *sig); |
![[Note]](../stylesheet/note.png) |
Note | ||
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DESCRIPTION
The sigwait() function
suspends execution of the calling thread until the delivery
of one of the signals specified in the signal set set. The function accepts the
signal (removes it from the pending list of signals), and
returns the signal number in sig.
The operation of sigwait()
is the same as sigwaitinfo(2), except
that:
-
sigwait() only returns the signal number, rather than a siginfo_t structure describing the signal. -
The return values of the two functions are different.
RETURN VALUE
On success, sigwait()
returns 0. On error, it returns a positive error number
(listed in ERRORS).
SEE ALSO
sigaction(2), signalfd(2), sigpending(2), sigsuspend(2), sigwaitinfo(2), sigsetops(3), signal(7)
COLOPHON
This page is part of release 3.33 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at http://man7.org/linux/man-pages/.
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Copyright (c) 2008, Linux Foundation, written by Michael Kerrisk <mtk.manpagesgmail.com> 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 Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date.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 professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. |