sem_unlink(3) - phpMan

SEM_UNLINK(3)              Linux Programmer's Manual             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 sem-
       aphore 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)
COLOPHON
       This  page  is  part of release 4.15 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
       https://www.kernel.org/doc/man-pages/.
Linux                             2015-08-08                     SEM_UNLINK(3)