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 -lrt or -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.
CONFORMING TO
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 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2006-03-25 SEM_UNLINK(3)
Check Out this Related Man Page
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 4.15 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)
Hi friends I'm doing a project and in that I need to use kernel semaphore but I'm not very clear about how to use it. I've used system V semaphore.
What I find difficult to understand is that in system V semaphore, a semaphore set is registered to the system (the semid returned from semget call... (3 Replies)
Hi ! All
This might be a silly question.. to experts in unix. but defintely its a interesting question and I want to know the root cause.
Here is the problem....
I have a Linux OS box. It has diff files systems.
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Can Someone help me what does the following error mean?
ERR: 17-Oct-11 15:07:44: File etlDataLoad.c Line 1069: 895, A fatal error has occured. Posting semaphore information
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Discussion started by: bobby1015
1 Replies
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Hello,
Why close my ask "How to implement a semaphore with pedestrian pushbutton" i'm autodidact, so i don't understand why you dedice close it.
I put the ask about Java (the language what i'm learning in spanish forum becouse my english is not good) but some body told me that this is the... (1 Reply)