Manpages - sem_close.3

sem_close - close a named semaphore

  #include <semaphore.h>

  int sem_close(sem_t *sem);

Link with -pthread.

*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.

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

EINVAL

sem is not a valid semaphore.

For an explanation of the terms used in this section, see *attributes*(7).

POSIX.1-2001, POSIX.1-2008.

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

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

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