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



NAME
       sem_close - close a named semaphore

SYNOPSIS
       #include <&lt;semaphore.h>&gt;

       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  termina-
       tion, 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 3.05 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)