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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | STANDARDS | HISTORY | NOTES | SEE ALSO | COLOPHON |
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sem_destroy(3) Library Functions Manual sem_destroy(3)
sem_destroy - destroy an unnamed semaphore
POSIX threads library (libpthread, -lpthread)
#include <semaphore.h>
int sem_destroy(sem_t *sem);
sem_destroy() destroys the unnamed semaphore at the address
pointed to by sem.
Only a semaphore that has been initialized by sem_init(3) should
be destroyed using sem_destroy().
Destroying a semaphore that other processes or threads are
currently blocked on (in sem_wait(3)) produces undefined
behavior.
Using a semaphore that has been destroyed produces undefined
results, until the semaphore has been reinitialized using
sem_init(3).
sem_destroy() returns 0 on success; on error, -1 is returned, and
errno is 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).
┌─────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────┼───────────────┼─────────┤
│ sem_destroy() │ Thread safety │ MT-Safe │
└─────────────────────────────────────┴───────────────┴─────────┘
POSIX.1-2008.
POSIX.1-2001.
An unnamed semaphore should be destroyed with sem_destroy()
before the memory in which it is located is deallocated. Failure
to do this can result in resource leaks on some implementations.
sem_init(3), sem_post(3), sem_wait(3), sem_overview(7)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
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⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
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[email protected]
Linux man-pages 6.9.1 2024-05-02 sem_destroy(3)
Pages that refer to this page: sem_init(3), sem_overview(7)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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