개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

sem_destroy(3)

SEM_DESTROY(3)             Linux Programmer's Manual            SEM_DESTROY(3)

NAME
       sem_destroy - destroy an unnamed semaphore

SYNOPSIS
       #include <semaphore.h>

       int sem_destroy(sem_t *sem);

       Link with -pthread.

DESCRIPTION
       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 de‐
       stroyed 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).

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

ERRORS
       EINVAL sem is not a valid semaphore.

ATTRIBUTES
       For an explanation of the terms  used  in  this  section,  see  attrib‐
       utes(7).  allbox; lb lb lb l l l.  Interface Attribute Value T{ sem_de‐
       stroy() T}   Thread safety  MT-Safe

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008.

NOTES
       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.

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

COLOPHON
       This  page  is  part of release 5.02 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       https://www.kernel.org/doc/man-pages/.

Linux                             2017-09-15                    SEM_DESTROY(3)