diff options
Diffstat (limited to 'cpukit/posix/src/pspindestroy.c')
-rw-r--r-- | cpukit/posix/src/pspindestroy.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/cpukit/posix/src/pspindestroy.c b/cpukit/posix/src/pspindestroy.c new file mode 100644 index 0000000000..aa3c465ec7 --- /dev/null +++ b/cpukit/posix/src/pspindestroy.c @@ -0,0 +1,73 @@ +/* + * POSIX Spinlock Manager -- Destroy a Spinlock + * + * 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 <pthread.h> +#include <errno.h> + +#include <rtems/system.h> +#include <rtems/posix/spinlock.h> + +/* + * pthread_spin_destroy + * + * This directive allows a thread to delete a spinlock specified by + * the spinlock id. The spinlock is freed back to the inactive + * spinlock chain. + * + * Input parameters: + * spinlock - spinlock id + * + * Output parameters: + * 0 - if successful + * error code - if unsuccessful + */ + +int pthread_spin_destroy( + pthread_spinlock_t *spinlock +) +{ + POSIX_Spinlock_Control *the_spinlock = NULL; + Objects_Locations location; + + if ( !spinlock ) + return EINVAL; + + the_spinlock = _POSIX_Spinlock_Get( spinlock, &location ); + switch ( location ) { + + case OBJECTS_LOCAL: + if ( _CORE_spinlock_Is_busy( &the_spinlock->Spinlock ) ) { + _Thread_Enable_dispatch(); + return EBUSY; + } + + _Objects_Close( &_POSIX_Spinlock_Information, &the_spinlock->Object ); + + _POSIX_Spinlock_Free( the_spinlock ); + + _Thread_Enable_dispatch(); + return 0; + +#if defined(RTEMS_MULTIPROCESSING) + case OBJECTS_REMOTE: +#endif + case OBJECTS_ERROR: + break; + } + + return EINVAL; +} |