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26 .TH SEM_CLOSE 3 2017-09-15 "Linux" "Linux Programmer's Manual"
28 sem_close \- close a named semaphore
31 .B #include <semaphore.h>
33 .BI "int sem_close(sem_t *" sem );
36 Link with \fI\-pthread\fP.
39 closes the named semaphore referred to by
41 allowing any resources that the system has allocated to
42 the calling process for this semaphore to be freed.
46 returns 0; on error, \-1 is returned, with
48 set to indicate the error.
53 is not a valid semaphore.
55 For an explanation of the terms used in this section, see
61 Interface Attribute Value
64 T} Thread safety MT-Safe
68 POSIX.1-2001, POSIX.1-2008.
70 All open named semaphores are automatically closed on process