sem_destroy(3) — Справочная страница Linux

sem_destroy(3)          Library Functions Manual          sem_destroy(3)

НАЗВАНИЕ

       sem_destroy - destroy an unnamed semaphore

БИБЛИОТЕКА

       POSIX threads library (libpthread, -lpthread)

СИНТАКСИС

       #include <semaphore.h>

       int sem_destroy(sem_t *sem);

ОПИСАНИЕ

       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).

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       sem_destroy() returns 0 on success; on error, -1 is returned, and
       errno is set to indicate the error.

ОШИБКИ

       EINVAL sem is not a valid semaphore.

АТРИБУТЫ

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌─────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                           │ Attribute     │ Value   │
       ├─────────────────────────────────────┼───────────────┼─────────┤
       │ sem_destroy()                       │ Thread safety │ MT-Safe │
       └─────────────────────────────────────┴───────────────┴─────────┘

СТАНДАРТЫ

       POSIX.1-2008.

ИСТОРИЯ

       POSIX.1-2001.

ПРИМЕЧАНИЯ

       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.

СМОТРИТЕ ТАКЖЕ

       sem_init(3), sem_post(3), sem_wait(3), sem_overview(7)

КОЛОФОН

       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
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       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
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       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                 sem_destroy(3)

Страницы, которые ссылаются на эту страницу: sem_init(3), sem_overview(7)