summaryrefslogtreecommitdiffstats
path: root/man/man3/sem_close.3
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-24 04:52:22 +0000
commit3d08cd331c1adcf0d917392f7e527b3f00511748 (patch)
tree312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man/man3/sem_close.3
parentAdding debian version 6.7-2. (diff)
downloadmanpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz
manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man/man3/sem_close.3')
-rw-r--r--man/man3/sem_close.363
1 files changed, 63 insertions, 0 deletions
diff --git a/man/man3/sem_close.3 b/man/man3/sem_close.3
new file mode 100644
index 0000000..46331ac
--- /dev/null
+++ b/man/man3/sem_close.3
@@ -0,0 +1,63 @@
+'\" t
+.\" Copyright (C) 2006 Michael Kerrisk <mtk.manpages@gmail.com>
+.\"
+.\" SPDX-License-Identifier: Linux-man-pages-copyleft
+.\"
+.TH sem_close 3 2024-05-02 "Linux man-pages (unreleased)"
+.SH NAME
+sem_close \- close a named semaphore
+.SH LIBRARY
+POSIX threads library
+.RI ( libpthread ", " \-lpthread )
+.SH SYNOPSIS
+.nf
+.B #include <semaphore.h>
+.P
+.BI "int sem_close(sem_t *" sem );
+.fi
+.SH DESCRIPTION
+.BR sem_close ()
+closes the named semaphore referred to by
+.IR sem ,
+allowing any resources that the system has allocated to
+the calling process for this semaphore to be freed.
+.SH RETURN VALUE
+On success
+.BR sem_close ()
+returns 0; on error, \-1 is returned, with
+.I errno
+set to indicate the error.
+.SH ERRORS
+.TP
+.B EINVAL
+.I sem
+is not a valid semaphore.
+.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 sem_close ()
+T} Thread safety MT-Safe
+.TE
+.SH STANDARDS
+POSIX.1-2008.
+.SH HISTORY
+POSIX.1-2001.
+.SH NOTES
+All open named semaphores are automatically closed on process
+termination, or upon
+.BR execve (2).
+.SH SEE ALSO
+.BR sem_getvalue (3),
+.BR sem_open (3),
+.BR sem_post (3),
+.BR sem_unlink (3),
+.BR sem_wait (3),
+.BR sem_overview (7)