закрыть именованный семафор (close a named semaphore)
Имя (Name)
sem_close - close a named semaphore
Синопсис (Synopsis)
#include <semaphore.h>
int sem_close(sem_t *sem);
Link with -pthread.
Описание (Description)
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.
Возвращаемое значение (Return value)
On success sem_close() returns 0; on error, -1 is returned, with
errno set to indicate the error.
Ошибки (Error)
EINVAL sem is not a valid semaphore.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│sem_close() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008.
Примечание (Note)
All open named semaphores are automatically closed on process
termination, or upon execve(2).
Смотри также (See also)
sem_getvalue(3), sem_open(3), sem_post(3), sem_unlink(3),
sem_wait(3), sem_overview(7)
