NAME¶
sem_unlink - remove a named semaphore
SYNOPSIS¶
#include <semaphore.h>
int sem_unlink(const char *name);
Link with
-pthread.
DESCRIPTION¶
sem_unlink() removes the named semaphore referred to by
name. The
semaphore name is removed immediately. The semaphore is destroyed once all
other processes that have the semaphore open close it.
RETURN VALUE¶
On success
sem_unlink() returns 0; on error, -1 is returned, with
errno set to indicate the error.
ERRORS¶
- EACCES
- The caller does not have permission to unlink this semaphore.
- ENAMETOOLONG
- name was too long.
- ENOENT
- There is no semaphore with the given name.
ATTRIBUTES¶
Multithreading (see pthreads(7))¶
The
sem_unlink() function is thread-safe.
POSIX.1-2001.
SEE ALSO¶
sem_getvalue(3),
sem_open(3),
sem_post(3),
sem_wait(3),
sem_overview(7)
COLOPHON¶
This page is part of release 3.74 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
http://www.kernel.org/doc/man-pages/.
