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mw_uid: corrects uid_read_message short timeouts

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This commit is contained in:
Allan Hessenflow
2013-12-18 18:54:53 -06:00
committed by Gedare Bloom
parent 2b03a62441
commit 66bf2cc909
1 changed files with 11 additions and 2 deletions
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13
cpukit/libmisc/fb/mw_uid.c
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@@ -90,15 +90,24 @@ int uid_read_message( struct MW_UID_MESSAGE *m, unsigned long timeout )
{ {
rtems_status_code status; rtems_status_code status;
size_t size = 0; size_t size = 0;
unsigned long micro_secs = timeout*1000;
int wait = (timeout != 0); int wait = (timeout != 0);
int ticks = RTEMS_MICROSECONDS_TO_TICKS(timeout * 1000);
if (timeout == (unsigned long) -1) {
ticks = RTEMS_NO_TIMEOUT;
} else if (timeout && ticks == 0) {
/* if timeout greater than 0 and smaller than a tick, round up to avoid
* unintentionally RTEMS_NO_TIMEOUT
*/
ticks = 1;
}
status = rtems_message_queue_receive( status = rtems_message_queue_receive(
queue_id, queue_id,
(void*)m, (void*)m,
&size, &size,
wait ? RTEMS_WAIT : RTEMS_NO_WAIT, wait ? RTEMS_WAIT : RTEMS_NO_WAIT,
RTEMS_MICROSECONDS_TO_TICKS(micro_secs) ticks
); );
if( status == RTEMS_SUCCESSFUL ) { if( status == RTEMS_SUCCESSFUL ) {