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| author | Alejandro Colomar <alx@kernel.org> | 2024-04-26 15:06:49 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-02 01:24:19 +0200 |
| commit | dcde2f70372b49ec43efc5db864c9ff585d0a2dd (patch) | |
| tree | 78b9b7425130e4a5858e4c01a524d802423879ed /man/man3/sigwait.3 | |
| parent | 12aca537ce78a41bbcdaf485209691e10f8002d7 (diff) | |
| download | man-pages-dcde2f70372b49ec43efc5db864c9ff585d0a2dd.tar.gz | |
man/, share/mk/: Move man*/ to man/
This is a scripted change:
$ mkdir man/;
$ mv man* man/;
$ ln -st . man/man*;
$ find share/mk/ -type f \
| xargs grep -l '^MANDIR *:=' \
| xargs sed -i '/^MANDIR *:=/s,$,/man,';
$ find share/mk/dist/ -type f \
| xargs grep -l man \
| xargs sed -i 's,man%,man/%,g';
Link: <https://lore.kernel.org/linux-man/YxcV4h+Xn7cd6+q2@pevik/T/>
Cc: Petr Vorel <pvorel@suse.cz>
Cc: Jakub Wilk <jwilk@jwilk.net>
Cc: Stefan Puiu <stefan.puiu@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Diffstat (limited to 'man/man3/sigwait.3')
| -rw-r--r-- | man/man3/sigwait.3 | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/man/man3/sigwait.3 b/man/man3/sigwait.3 new file mode 100644 index 0000000000..2c3330015b --- /dev/null +++ b/man/man3/sigwait.3 @@ -0,0 +1,112 @@ +'\" t +.\" Copyright (c) 2008, Linux Foundation, written by Michael Kerrisk +.\" <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.TH sigwait 3 (date) "Linux man-pages (unreleased)" +.SH NAME +sigwait \- wait for a signal +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <signal.h> +.P +.BI "int sigwait(const sigset_t *restrict " set ", int *restrict " sig ); +.fi +.P +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.P +.BR sigwait (): +.nf + Since glibc 2.26: + _POSIX_C_SOURCE >= 199506L + glibc 2.25 and earlier: + _POSIX_C_SOURCE +.fi +.SH DESCRIPTION +The +.BR sigwait () +function suspends execution of the calling thread until +one of the signals specified in the signal set +.I set +becomes pending. +For a signal to become pending, +it must first be blocked with +.BR sigprocmask (2). +The function accepts the signal +(removes it from the pending list of signals), +and returns the signal number in +.IR sig . +.P +The operation of +.BR sigwait () +is the same as +.BR sigwaitinfo (2), +except that: +.IP \[bu] 3 +.BR sigwait () +returns only the signal number, rather than a +.I siginfo_t +structure describing the signal. +.IP \[bu] +The return values of the two functions are different. +.SH RETURN VALUE +On success, +.BR sigwait () +returns 0. +On error, it returns a positive error number (listed in ERRORS). +.SH ERRORS +.TP +.B EINVAL +.\" Does not occur for glibc. +.I set +contains an invalid signal number. +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR sigwait () +T} Thread safety MT-Safe +.TE +.SH VERSIONS +.BR sigwait () +is implemented using +.BR sigtimedwait (2); +consult its +.BR NOTES . +.P +The glibc implementation of +.BR sigwait () +silently ignores attempts to wait for the two real-time signals that +are used internally by the NPTL threading implementation. +See +.BR nptl (7) +for details. +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +POSIX.1-2001. +.SH EXAMPLES +See +.BR pthread_sigmask (3). +.SH SEE ALSO +.BR sigaction (2), +.BR signalfd (2), +.BR sigpending (2), +.BR sigsuspend (2), +.BR sigwaitinfo (2), +.BR sigsetops (3), +.BR signal (7) |