SEM_CLOSE(3)

NAME
sem_close - close a named semaphore

SYNOPSIS
#include <semaphore.h>

int sem_close(sem_t *sem);

Link with -lrt or -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.

CONFORMING TO
POSIX.1-2001.

NOTES
All open named semaphores are automatically closed on process termination, or upon execve(2).

SEE ALSO
sem_getvalue(3), sem_open(3), sem_post(3), sem_unlink(3), sem_wait(3), sem_overview(7)

COLOPHON
This page is part of release 3.38 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/.