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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-02 18:00:15 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-02 18:00:15 +0000 |
commit | 799c767d319d65c94b3770e82490c8dd4dc80378 (patch) | |
tree | bf9909c7f3ae617a34e401a0f88dc314f982f772 /cpukit/posix/src/semdestroy.c | |
parent | Split some more stuff out of psignal.c. (diff) | |
download | rtems-799c767d319d65c94b3770e82490c8dd4dc80378.tar.bz2 |
Split the POSIX semaphore manager into multiple files.
Diffstat (limited to 'cpukit/posix/src/semdestroy.c')
-rw-r--r-- | cpukit/posix/src/semdestroy.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/cpukit/posix/src/semdestroy.c b/cpukit/posix/src/semdestroy.c new file mode 100644 index 0000000000..fc73a93ada --- /dev/null +++ b/cpukit/posix/src/semdestroy.c @@ -0,0 +1,82 @@ +/* + * $Id$ + */ + +#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/posix/seterr.h> + +/*PAGE + * + * 11.2.2 Destroy an Unnamed Semaphore, P1003.1b-1993, p.220 + */ + +int sem_destroy( + sem_t *sem +) +{ + register POSIX_Semaphore_Control *the_semaphore; + Objects_Locations location; + + the_semaphore = _POSIX_Semaphore_Get( sem, &location ); + switch ( location ) { + case OBJECTS_ERROR: + set_errno_and_return_minus_one( EINVAL ); + case OBJECTS_REMOTE: + _Thread_Dispatch(); + return POSIX_MP_NOT_IMPLEMENTED(); + set_errno_and_return_minus_one( EINVAL ); + case OBJECTS_LOCAL: + /* + * Undefined operation on a named semaphore. + */ + + if ( the_semaphore->named == TRUE ) { + set_errno_and_return_minus_one( EINVAL ); + } + + _Objects_Close( &_POSIX_Semaphore_Information, &the_semaphore->Object ); + + _CORE_semaphore_Flush( + &the_semaphore->Semaphore, +#if defined(RTEMS_MULTIPROCESSING) + _POSIX_Semaphore_MP_Send_object_was_deleted, +#else + NULL, +#endif + -1 /* XXX should also seterrno -> EINVAL */ + ); + + _POSIX_Semaphore_Free( the_semaphore ); + +#if defined(RTEMS_MULTIPROCESSING) + if ( the_semaphore->process_shared == PTHREAD_PROCESS_SHARED ) { + + _Objects_MP_Close( + &_POSIX_Semaphore_Information, + the_semaphore->Object.id + ); + + _POSIX_Semaphore_MP_Send_process_packet( + POSIX_SEMAPHORE_MP_ANNOUNCE_DELETE, + the_semaphore->Object.id, + 0, /* Not used */ + 0 /* Not used */ + ); + } +#endif + _Thread_Enable_dispatch(); + return 0; + } + return POSIX_BOTTOM_REACHED(); +} |