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SuSE 11.3 - man page for sem_destroy (suse section 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 -lrt or -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 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 reinitial- ized 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.
CONFORMING TO
POSIX.1-2001.
NOTES
An unnamed semaphore should be destroyed with sem_destroy() before the memory in which it is located is deal- located. 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 3.25 of the Linux man-pages project. A description of the project, and informa- tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2006-03-25 SEM_DESTROY(3)


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