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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-09-12 08:09:16 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-10-05 14:29:01 +0200 |
commit | c090db7405b72ce6d0b726c0a39fb1c1aebab7ea (patch) | |
tree | 099a887f445115e9b40d25cd6a2b2b11908d347d /cpukit/posix/src/semdestroy.c | |
parent | posix: Optimize pthread_once_t (diff) | |
download | rtems-c090db7405b72ce6d0b726c0a39fb1c1aebab7ea.tar.bz2 |
posix: Implement self-contained POSIX semaphores
For semaphore object pointer and object validation see
POSIX_SEMAPHORE_VALIDATE_OBJECT().
Destruction or close of a busy semaphore returns an error status. The
object is not flushed.
POSIX semaphores are now available in all configurations and no longer
depend on --enable-posix.
Update #2514.
Update #3116.
Diffstat (limited to 'cpukit/posix/src/semdestroy.c')
-rw-r--r-- | cpukit/posix/src/semdestroy.c | 31 |
1 files changed, 6 insertions, 25 deletions
diff --git a/cpukit/posix/src/semdestroy.c b/cpukit/posix/src/semdestroy.c index 8b81470bbf..61f5b1e80f 100644 --- a/cpukit/posix/src/semdestroy.c +++ b/cpukit/posix/src/semdestroy.c @@ -18,39 +18,20 @@ #include "config.h" #endif -#include <semaphore.h> - #include <rtems/posix/semaphoreimpl.h> -int sem_destroy( - sem_t *sem -) +int sem_destroy( sem_t *sem ) { - POSIX_Semaphore_Control *the_semaphore; - Thread_queue_Context queue_context; - - _Objects_Allocator_lock(); - the_semaphore = _POSIX_Semaphore_Get( sem, &queue_context ); + POSIX_SEMAPHORE_VALIDATE_OBJECT( sem ); - if ( the_semaphore == NULL ) { - _Objects_Allocator_unlock(); + if ( _POSIX_Semaphore_Is_named( sem ) ) { rtems_set_errno_and_return_minus_one( EINVAL ); } - _CORE_semaphore_Acquire_critical( - &the_semaphore->Semaphore, - &queue_context - ); - - if ( the_semaphore->named ) { - /* Undefined operation on a named semaphore */ - _CORE_semaphore_Release( &the_semaphore->Semaphore, &queue_context ); - _Objects_Allocator_unlock(); - rtems_set_errno_and_return_minus_one( EINVAL ); + if ( _POSIX_Semaphore_Is_busy( sem ) ) { + rtems_set_errno_and_return_minus_one( EBUSY ); } - _POSIX_Semaphore_Delete( the_semaphore, &queue_context ); - - _Objects_Allocator_unlock(); + _POSIX_Semaphore_Destroy( sem ); return 0; } |