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SEM_DESTROY(3P) POSIX Programmer's Manual SEM_DESTROY(3P)
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior), or
the interface may not be implemented on Linux.
sem_destroy — destroy an unnamed semaphore
#include <semaphore.h>
int sem_destroy(sem_t *sem);
The sem_destroy() function shall destroy the unnamed semaphore
indicated by sem. Only a semaphore that was created using sem_init()
may be destroyed using sem_destroy(); the effect of calling
sem_destroy() with a named semaphore is undefined. The effect of
subsequent use of the semaphore sem is undefined until sem is
reinitialized by another call to sem_init().
It is safe to destroy an initialized semaphore upon which no threads
are currently blocked. The effect of destroying a semaphore upon
which other threads are currently blocked is undefined.
Upon successful completion, a value of zero shall be returned.
Otherwise, a value of −1 shall be returned and errno set to indicate
the error.
The sem_destroy() function may fail if:
EINVAL The sem argument is not a valid semaphore.
EBUSY There are currently processes blocked on the semaphore.
The following sections are informative.
None.
None.
None.
None.
semctl(3p), semget(3p), semop(3p), sem_init(3p), sem_open(3p)
The Base Definitions volume of POSIX.1‐2008, semaphore.h(0p)
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The Open
Group Base Specifications Issue 7, Copyright (C) 2013 by the
Institute of Electrical and Electronics Engineers, Inc and The Open
Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
applied.) In the event of any discrepancy between this version and
the original IEEE and The Open Group Standard, the original IEEE and
The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the
source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 SEM_DESTROY(3P)
Pages that refer to this page: semaphore.h(0p), semctl(3p), semget(3p), sem_init(3p), semop(3p)