sem_unlink (3)

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

For an explanation of the terms used in this section, see attributes(7).
Interface Attribute Value
sem_unlink () Thread safety MT-Safe

CONFORMING TO

POSIX.1-2001, POSIX.1-2008.

SEE ALSO

sem_getvalue(3), sem_open(3), sem_post(3), sem_wait(3), sem_overview(7)

Information

Source
Linux kernel
OS/version
Linux
Source updated
August 8, 2015
Page created
February 9, 2018
Page generated
December 2, 2018