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Diffstat (limited to 'cpukit/score/src/corebarrierrelease.c')
-rw-r--r-- | cpukit/score/src/corebarrierrelease.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/cpukit/score/src/corebarrierrelease.c b/cpukit/score/src/corebarrierrelease.c new file mode 100644 index 0000000000..7bf341d4c7 --- /dev/null +++ b/cpukit/score/src/corebarrierrelease.c @@ -0,0 +1,70 @@ +/* + * SuperCore Barrier Handler + * + * DESCRIPTION: + * + * This package is part of the implementation of the SuperCore Barrier Handler. + * + * COPYRIGHT (c) 1989-2006. + * 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 <rtems/system.h> +#include <rtems/score/isr.h> +#include <rtems/score/corebarrier.h> +#include <rtems/score/states.h> +#include <rtems/score/thread.h> +#include <rtems/score/threadq.h> + +/*PAGE + * + * _CORE_barrier_Release + * + * Input parameters: + * the_barrier - the barrier to be flushed + * id - id of the object for a remote unblock + * api_barrier_mp_support - api dependent MP support actions + * + * Output parameters: + * CORE_BARRIER_STATUS_SUCCESSFUL - if successful + * core error code - if unsuccessful + * + * Output parameters: + * returns number of threads unblocked + */ + +uint32_t _CORE_barrier_Release( + CORE_barrier_Control *the_barrier, +#if defined(RTEMS_MULTIPROCESSING) + Objects_Id id, + CORE_barrier_API_mp_support_callout api_barrier_mp_support +#else + Objects_Id id __attribute__((unused)), + CORE_barrier_API_mp_support_callout api_barrier_mp_support __attribute__((unused)) +#endif +) +{ + Thread_Control *the_thread; + uint32_t count; + + count = 0; + while ( (the_thread = _Thread_queue_Dequeue(&the_barrier->Wait_queue)) ) { +#if defined(RTEMS_MULTIPROCESSING) + if ( !_Objects_Is_local_id( the_thread->Object.id ) ) + (*api_barrier_mp_support) ( the_thread, id ); +#endif + count++; + } + the_barrier->number_of_waiting_threads = 0; + return count; +} |