1SEM_CLOSE(3) Linux Programmer's Manual SEM_CLOSE(3)
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6 sem_close - close a named semaphore
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9 #include <semaphore.h>
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11 int sem_close(sem_t *sem);
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13 Link with -pthread.
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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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21 On success sem_close() returns 0; on error, -1 is returned, with errno
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25 EINVAL sem is not a valid semaphore.
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28 POSIX.1-2001.
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31 All open named semaphores are automatically closed on process termina‐
32 tion, or upon execve(2).
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35 sem_getvalue(3), sem_open(3), sem_post(3), sem_unlink(3), sem_wait(3),
36 sem_overview(7)
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39 This page is part of release 3.53 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 2012-05-13 SEM_CLOSE(3)