NAME

msem_remove − Remove a semaphore

SYNOPSIS

#include <sys/mman.h>
int msem_remove(
        msemaphore ∗sem );

LIBRARY

Standard C Library (libc)

PARAMETERS

semPoints to an msemaphore structure which specifies the semaphore to be removed. 

DESCRIPTION

The msem_remove() function removes a binary semaphore.  Any subsequent use of the msemaphore structure before it is again initialized by calling the msem_init() function will have undefined results. 

The msem_remove() function also causes any process waiting in the msem_lock() function on the removed semaphore to return with an error. 

If the msemaphore structure contains any value not resulting from a call to the msem_init() function followed by a (possibly empty) sequence of calls to the msem_lock() and msem_unlock() functions, the result is undefined. The address of an msemaphore structure may be significant.  If the msemaphore structure contains any value copied from an msemaphore structure at a different address, the result is undefined. 

NOTES

AES Support Level:
Trial use

RETURN VALUES

On successful completion, the msem_remove() function returns 0 (zero). On error, the msem_remove() function returns -1 and sets errno to indicate the error. 

ERRORS

If the msem_remove() function fails, errno may be set to the following value:

[EINVAL]
The sem parameter points to an msemaphore structure which specifies a semaphore which has been removed. 

SEE ALSO

Functions: msem_init(3), msem_lock(3), msem_unlock(3), munmap(2)