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Diffstat (limited to 'cpukit/posix/src/semclose.c')
-rw-r--r-- | cpukit/posix/src/semclose.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/cpukit/posix/src/semclose.c b/cpukit/posix/src/semclose.c new file mode 100644 index 0000000000..c265c867d5 --- /dev/null +++ b/cpukit/posix/src/semclose.c @@ -0,0 +1,64 @@ +/* + * COPYRIGHT (c) 1989-2007. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <stdarg.h> + +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <semaphore.h> +#include <limits.h> + +#include <rtems/system.h> +#include <rtems/score/object.h> +#include <rtems/posix/semaphore.h> +#include <rtems/posix/time.h> +#include <rtems/seterr.h> + + +/*PAGE + * + * sem_close + * + * Routine to close a semaphore that has been opened or initialized. + * + * 11.2.4 Close a Named Semaphore, P1003.1b-1993, p.224 + */ + +int sem_close( + sem_t *sem +) +{ + register POSIX_Semaphore_Control *the_semaphore; + Objects_Locations location; + + the_semaphore = _POSIX_Semaphore_Get( sem, &location ); + switch ( location ) { + + case OBJECTS_LOCAL: + the_semaphore->open_count -= 1; + _POSIX_Semaphore_Delete( the_semaphore ); + _Thread_Enable_dispatch(); + return 0; + +#if defined(RTEMS_MULTIPROCESSING) + case OBJECTS_REMOTE: +#endif + case OBJECTS_ERROR: + break; + } + + rtems_set_errno_and_return_minus_one( EINVAL ); +} |