SIMPLE SOLUTIONS

SEM_UNLINK(3) - man page online | library functions

Remove a named semaphore.

Chapter
2015-08-08
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 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)

COLOPHON

This page is part of release 4.04 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/.
Linux 2015-08-08 SEM_UNLINK(3)
This manual Reference Other manuals
sem_unlink(3) referred by sem_close(3) | sem_open(3) | sem_overview(7)
refer to attributes(7) | sem_getvalue(3) | sem_open(3) | sem_overview(7) | sem_post(3) | sem_wait(3)