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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2000-01-13 19:25:15 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2000-01-13 19:25:15 +0000 |
| commit | 53fb837afc4285486e318bcb614c911bbe9b1348 (patch) | |
| tree | cdd9b6ff2a66e8f5c746a06d1e639be4c01c6941 /cpukit/itron/src/tsnd_mbf.c | |
| parent | Missed removing this file in an earlier commit. This is removed (diff) | |
| download | rtems-53fb837afc4285486e318bcb614c911bbe9b1348.tar.bz2 | |
POSIX message queues now include complete functionality including
blocking sends when the queue is full. The SuperCore was enhanced
to support blocking on send. The existing POSIX API was debugged
and numerous test cases were added to psxmsgq01 by Jennifer Averett.
SuperCore enhancements and resulting modifications to other APIs
were done by Joel.
There is one significant point of interpretation for the POSIX API.
What happens to threads already blocked on a message queue when the
mode of that same message queue is changed from blocking to non-blocking?
We decided to unblock all waiting tasks with an EAGAIN error just
as if a non-blocking version of the same operation had returned
unsatisfied. This case is not discussed in the POSIX standard and
other implementations may have chosen differently.
Diffstat (limited to '')
| -rw-r--r-- | cpukit/itron/src/tsnd_mbf.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/cpukit/itron/src/tsnd_mbf.c b/cpukit/itron/src/tsnd_mbf.c index bc609dd298..0ed3b4f90e 100644 --- a/cpukit/itron/src/tsnd_mbf.c +++ b/cpukit/itron/src/tsnd_mbf.c @@ -33,7 +33,6 @@ ER tsnd_mbf( Objects_Locations location; Watchdog_Interval interval; boolean wait; - CORE_message_queue_Status status; if (msgsz <= 0 || !msg) return E_PAR; @@ -50,8 +49,6 @@ ER tsnd_mbf( if ( wait && _ITRON_Is_in_non_task_state() ) return E_CTX; - assert( wait == FALSE ); - the_message_buffer = _ITRON_Message_buffer_Get(mbfid, &location); switch (location) { case OBJECTS_REMOTE: @@ -60,17 +57,20 @@ ER tsnd_mbf( case OBJECTS_LOCAL: /* XXX Submit needs to take into account blocking */ - status = _CORE_message_queue_Submit( + _CORE_message_queue_Submit( &the_message_buffer->message_queue, msg, msgsz, the_message_buffer->Object.id, NULL, - CORE_MESSAGE_QUEUE_SEND_REQUEST + CORE_MESSAGE_QUEUE_SEND_REQUEST, + wait, /* sender may block */ + interval /* timeout interval */ ); _Thread_Enable_dispatch(); - return - _ITRON_Message_buffer_Translate_core_message_buffer_return_code(status); + return _ITRON_Message_buffer_Translate_core_message_buffer_return_code( + _Thread_Executing->Wait.return_code + ); } /* |