The OpenNET Project / Index page

[ новости /+++ | форум | wiki | теги | ]

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

sem_unlink ()
  • >> sem_unlink (3) ( Solaris man: Библиотечные вызовы )
  • sem_unlink (3) ( FreeBSD man: Библиотечные вызовы )
  • sem_unlink (3) ( Linux man: Библиотечные вызовы )
  • sem_unlink (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    sem_unlink - remove a named semaphore
     
    

    SYNOPSIS

    #include <semaphore.h>
    
    int sem_unlink(const char *name);
    

     

    DESCRIPTION

    The sem_unlink() function removes the semaphore named by the string name. If the semaphore named by name is currently referenced by other processes, then sem_unlink() has no effect on the state of the semaphore. If one or more processes have the semaphore open when sem_unlink() is called, destruction of the semaphore is postponed until all references to the semaphore have been destroyed by calls to sem_close(3C), _Exit(2), or one of the exec functions (see exec(2)) . Calls to sem_open(3C) to re-create or re-connect to the semaphore refer to a new semaphore after sem_unlink() is called. The sem_unlink() call does not block until all references have been destroyed; it returns immediately.  

    RETURN VALUES

    Upon successful completion, sem_unlink() returns 0. Otherwise, the semaphore is not changed and the function returns a value of -1 and sets errno to indicate the error.  

    ERRORS

    The sem_unlink() function will fail if:

    EACCES

    Permission is denied to unlink the named semaphore.

    ENAMETOOLONG

    The length of name string exceeds PATH_MAX, or a pathname component is longer than NAME_MAX while _POSIX_NO_TRUNC is in effect.

    ENOENT

    The named semaphore does not exist.

    ENOSYS

    The sem_unlink() function is not supported by the system.

     

    ATTRIBUTES

    See attributes(5) for descriptions of the following attributes:

    ATTRIBUTE TYPEATTRIBUTE VALUE

    Interface StabilityCommitted

    MT-Level

    Standard

     

    SEE ALSO

    exec(2), exit(2), sem_close(3C), sem_open(3C), attributes(5), standards(5)  

    NOTES

    Solaris 2.6 was the first release to support the Asynchronous Input and Output option. Prior to this release, this function always returned -1 and set errno to ENOSYS.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    ATTRIBUTES
    SEE ALSO
    NOTES


    Поиск по тексту MAN-ов: 




    Спонсоры:
    PostgresPro
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2022 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру