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Diffstat (limited to 'cpukit/rtems/src/msgqbroadcast.c')
-rw-r--r-- | cpukit/rtems/src/msgqbroadcast.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/cpukit/rtems/src/msgqbroadcast.c b/cpukit/rtems/src/msgqbroadcast.c new file mode 100644 index 0000000000..96389b8d23 --- /dev/null +++ b/cpukit/rtems/src/msgqbroadcast.c @@ -0,0 +1,113 @@ +/* + * Message Queue Manager + * + * + * 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 <rtems/system.h> +#include <rtems/score/sysstate.h> +#include <rtems/score/chain.h> +#include <rtems/score/isr.h> +#include <rtems/score/coremsg.h> +#include <rtems/score/object.h> +#include <rtems/score/states.h> +#include <rtems/score/thread.h> +#include <rtems/score/wkspace.h> +#if defined(RTEMS_MULTIPROCESSING) +#include <rtems/score/mpci.h> +#endif +#include <rtems/rtems/status.h> +#include <rtems/rtems/attr.h> +#include <rtems/rtems/message.h> +#include <rtems/rtems/options.h> +#include <rtems/rtems/support.h> + +/*PAGE + * + * rtems_message_queue_broadcast + * + * This directive sends a message for every thread waiting on the queue + * designated by id. + * + * Input parameters: + * id - pointer to message queue + * buffer - pointer to message buffer + * size - size of message to broadcast + * count - pointer to area to store number of threads made ready + * + * Output parameters: + * count - number of threads made ready + * RTEMS_SUCCESSFUL - if successful + * error code - if unsuccessful + */ + +rtems_status_code rtems_message_queue_broadcast( + rtems_id id, + const void *buffer, + size_t size, + uint32_t *count +) +{ + register Message_queue_Control *the_message_queue; + Objects_Locations location; + CORE_message_queue_Status core_status; + + if ( !buffer ) + return RTEMS_INVALID_ADDRESS; + + if ( !count ) + return RTEMS_INVALID_ADDRESS; + + the_message_queue = _Message_queue_Get( id, &location ); + switch ( location ) { + + case OBJECTS_LOCAL: + core_status = _CORE_message_queue_Broadcast( + &the_message_queue->message_queue, + buffer, + size, + id, + #if defined(RTEMS_MULTIPROCESSING) + _Message_queue_Core_message_queue_mp_support, + #else + NULL, + #endif + count + ); + + _Thread_Enable_dispatch(); + return + _Message_queue_Translate_core_message_queue_return_code( core_status ); + +#if defined(RTEMS_MULTIPROCESSING) + case OBJECTS_REMOTE: + _Thread_Executing->Wait.return_argument = count; + + return + _Message_queue_MP_Send_request_packet( + MESSAGE_QUEUE_MP_BROADCAST_REQUEST, + id, + buffer, + &size, + 0, /* option_set not used */ + MPCI_DEFAULT_TIMEOUT + ); +#endif + + case OBJECTS_ERROR: + break; + } + return RTEMS_INVALID_ID; +} |