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-'\" t
-.\" Copyright (C) 2006 Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH sem_destroy 3 (date) "Linux man-pages (unreleased)"
-.SH NAME
-sem_destroy \- destroy an unnamed semaphore
-.SH LIBRARY
-POSIX threads library
-.RI ( libpthread ", " \-lpthread )
-.SH SYNOPSIS
-.nf
-.B #include <semaphore.h>
-.P
-.BI "int sem_destroy(sem_t *" sem );
-.fi
-.SH DESCRIPTION
-.BR sem_destroy ()
-destroys the unnamed semaphore at the address pointed to by
-.IR sem .
-.P
-Only a semaphore that has been initialized by
-.BR sem_init (3)
-should be destroyed using
-.BR sem_destroy ().
-.P
-Destroying a semaphore that other processes or threads are
-currently blocked on (in
-.BR sem_wait (3))
-produces undefined behavior.
-.P
-Using a semaphore that has been destroyed produces undefined results,
-until the semaphore has been reinitialized using
-.BR sem_init (3).
-.SH RETURN VALUE
-.BR sem_destroy ()
-returns 0 on success;
-on error, \-1 is returned, and
-.I errno
-is 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_destroy ()
-T}	Thread safety	MT-Safe
-.TE
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-POSIX.1-2001.
-.SH NOTES
-An unnamed semaphore should be destroyed with
-.BR sem_destroy ()
-before the memory in which it is located is deallocated.
-Failure to do this can result in resource leaks on some implementations.
-.\" But not on NPTL, where sem_destroy () is a no-op..
-.SH SEE ALSO
-.BR sem_init (3),
-.BR sem_post (3),
-.BR sem_wait (3),
-.BR sem_overview (7)