|This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.|
Close a named semaphore
#include <semaphore.h> int sem_close( sem_t * sem );
- A pointer to a semaphore, as returned by sem_open().
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The sem_close() function closes the named semaphore sem opened by sem_open(), releasing any system resources associated with the sem.
|Don't mix named semaphore operations (sem_open() and sem_close()) with unnamed semaphore operations (sem_init() and sem_destroy()) on the same semaphore.|
- An error occurred (errno is set).
- Invalid semaphore descriptor sem.
procnto* in the Utilities Reference