1SEM_CLOSE(3)               Linux Programmer's Manual              SEM_CLOSE(3)
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NAME

6       sem_close - close a named semaphore
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SYNOPSIS

9       #include <semaphore.h>
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11       int sem_close(sem_t *sem);
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13       Link with -lrt or -pthread.
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DESCRIPTION

16       sem_close() closes the named semaphore referred to by sem, allowing any
17       resources that the system has allocated to the calling process for this
18       semaphore to be freed.
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RETURN VALUE

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

25       EINVAL sem is not a valid semaphore.
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CONFORMING TO

28       POSIX.1-2001.
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NOTES

31       All open named semaphores are automatically closed on process  termina‐
32       tion, or upon execve(2).
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SEE ALSO

35       sem_getvalue(3),  sem_open(3), sem_post(3), sem_unlink(3), sem_wait(3),
36       sem_overview(7)
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COLOPHON

39       This page is part of release 3.22 of the Linux  man-pages  project.   A
40       description  of  the project, and information about reporting bugs, can
41       be found at http://www.kernel.org/doc/man-pages/.
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45Linux                             2006-03-25                      SEM_CLOSE(3)
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