NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

SEM_CLOSE(3)                  Linux Programmer's Manual                  SEM_CLOSE(3)

NAME         top

       sem_close - close a named semaphore

SYNOPSIS         top

       #include <semaphore.h>

       int sem_close(sem_t *sem);

       Link with -lrt or -pthread.

DESCRIPTION         top

       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         top

       On success sem_close() returns 0; on error, -1 is returned, with errno set to
       indicate the error.

ERRORS         top

       EINVAL sem is not a valid semaphore.

CONFORMING TO         top

       POSIX.1-2001.

NOTES         top

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

SEE ALSO         top

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

COLOPHON         top

       This page is part of release 3.23 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_CLOSE(3)