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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-15 17:15:58 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-11-15 17:15:58 +0000 |
commit | 9da09940e4313465c77a2531f4a4f918d7ad99ef (patch) | |
tree | 0d580090a6772135d2123745c2a73409e62d933d /cpukit/itron/src/trcv_mbf.c | |
parent | Split ITRON semaphore manager into multiple files. (diff) | |
download | rtems-9da09940e4313465c77a2531f4a4f918d7ad99ef.tar.bz2 |
Split ITRON Message Buffer Manager into multiple files.
Diffstat (limited to 'cpukit/itron/src/trcv_mbf.c')
-rw-r--r-- | cpukit/itron/src/trcv_mbf.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/cpukit/itron/src/trcv_mbf.c b/cpukit/itron/src/trcv_mbf.c new file mode 100644 index 0000000000..cdd244c40f --- /dev/null +++ b/cpukit/itron/src/trcv_mbf.c @@ -0,0 +1,77 @@ +/* + * ITRON Message Buffer Manager + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include <itron.h> + +#include <rtems/itron/msgbuffer.h> +#include <rtems/itron/task.h> + +/* + * trcv_mbf - Receive Message from MessageBuffer with Timeout + */ + +ER trcv_mbf( + VP msg, + INT *p_msgsz, + ID mbfid, + TMO tmout +) +{ + ITRON_Message_buffer_Control *the_message_buffer; + Objects_Locations location; + CORE_message_queue_Status status; + boolean wait; + Watchdog_Interval interval; + + interval = 0; + if (tmout == TMO_POL) { + wait = FALSE; + } else { + wait = TRUE; + if (tmout != TMO_FEVR) + interval = TOD_MILLISECONDS_TO_TICKS(tmout); + } + + if (wait && _ITRON_Is_in_non_task_state() ) + return E_CTX; + + if (!p_msgsz || !msg || tmout <= -2) + return E_PAR; + + the_message_buffer = _ITRON_Message_buffer_Get(mbfid, &location); + switch (location) { + case OBJECTS_REMOTE: + case OBJECTS_ERROR: /* Multiprocessing not supported */ + return _ITRON_Message_buffer_Clarify_get_id_error(mbfid); + + case OBJECTS_LOCAL: + _CORE_message_queue_Seize( + &the_message_buffer->message_queue, + the_message_buffer->Object.id, + msg, + p_msgsz, + wait, + interval + ); + _Thread_Enable_dispatch(); + status = (CORE_message_queue_Status)_Thread_Executing->Wait.return_code; + return + _ITRON_Message_buffer_Translate_core_message_buffer_return_code(status); + } + + /* + * If multiprocessing were supported, this is where we would announce + * the existence of the semaphore to the rest of the system. + */ + +#if defined(RTEMS_MULTIPROCESSING) +#endif + return E_OK; +} |