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Modify soft devices to synchronize TSEL=-2 timestamps

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Use dbLinkDoLocked() to ensure a timestamp set by TSEL=-2
comes from the same update as the value.
This commit is contained in:
Andrew Johnson
2017-04-19 16:50:38 -05:00
parent d2db634ed2
commit 89f13aa51b
15 changed files with 236 additions and 62 deletions
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src/std/dev/devEventSoft.c
+15 -4
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@@ -53,13 +53,14 @@ static long init_record(eventRecord *prec)
return 0;
}
static long read_event(eventRecord *prec)
static long readLocked(struct link *pinp, void *dummy)
{
eventRecord *prec = (eventRecord *) pinp->precord;
long status;
char newEvent[MAX_STRING_SIZE];
if (!dbLinkIsConstant(&prec->inp)) {
status = dbGetLink(&prec->inp, DBR_STRING, newEvent, 0, 0);
if (!dbLinkIsConstant(pinp)) {
status = dbGetLink(pinp, DBR_STRING, newEvent, 0, 0);
if (status) return status;
if (strcmp(newEvent, prec->val) != 0) {
strcpy(prec->val, newEvent);
@@ -69,6 +70,16 @@ static long read_event(eventRecord *prec)
prec->udf = FALSE;
if (dbLinkIsConstant(&prec->tsel) &&
prec->tse == epicsTimeEventDeviceTime)
dbGetTimeStamp(&prec->inp, &prec->time);
dbGetTimeStamp(pinp, &prec->time);
return 0;
}
static long read_event(eventRecord *prec)
{
long status = dbLinkDoLocked(&prec->inp, readLocked, NULL);
if (status == S_db_noLSET)
status = readLocked(&prec->inp, NULL);
return status;
}