/*
* Get value from a queued PV.
*/
epicsShareFunc boolean seq_pvGetQ(SS_ID ss, CH_ID chId)
{
PROG *sp = ss->prog;
CHAN *ch = sp->chan + chId;
void *var = valPtr(ch,ss);
EF_ID ev_flag = ch->syncedTo;
PVMETA *meta = metaPtr(ch,ss);
boolean was_empty;
struct getq_cp_arg arg = {ch, var, meta};
if (!ch->queue)
{
errlogSevPrintf(errlogMajor,
"pvGetQ(%s): user error (not queued)\n",
ch->varName
);
return FALSE;
}
was_empty = seqQueueGetF(ch->queue, getq_cp, &arg);
if (ev_flag)
{
epicsMutexMustLock(sp->lock);
/* If queue is now empty, clear the event flag */
if (seqQueueIsEmpty(ch->queue))
{
bitClear(sp->evFlags, ev_flag);
}
epicsMutexUnlock(sp->lock);
}
return (!was_empty);
}
epicsShareFunc boolean seqQueueGet(QUEUE q, void *value)
{
return seqQueueGetF(q, memcpy, value);
}
