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SEM_CLOSE
Section: Linux Programmer's Manual (3)Updated: 2017-09-15
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NAME
sem_close - close a named semaphoreSYNOPSIS
#include <semaphore.h> int sem_close(sem_t *sem);
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.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).| Interface | Attribute | Value |
| sem_close() | Thread safety | MT-Safe |
CONFORMING TO
POSIX.1-2001, POSIX.1-2008.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
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