NAME¶
sem_close - close a named semaphore
SYNOPSIS¶
#include <semaphore.h>
int sem_close(sem_t *sem);
Link with -pthread.
DESCRIPTION¶
sem_close() closes the named semaphore referred to by sem,
allowing any resources that the system has allocated to the calling process
for this semaphore to be freed.
RETURN VALUE¶
On success sem_close() returns 0; on error, -1 is returned, with
errno set to indicate the error.
ERRORS¶
- EINVAL
- sem is not a valid semaphore.
ATTRIBUTES¶
For an explanation of the terms used in this section, see attributes(7).
| Interface |
Attribute |
Value |
| sem_close () |
Thread safety |
MT-Safe |
POSIX.1-2001, POSIX.1-2008.
NOTES¶
All open named semaphores are automatically closed on process termination, or
upon execve(2).
COLOPHON¶
This page is part of release 4.10 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/.
