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send DBE_PROPERTY events only if property field actually changed

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This commit is contained in:
zimoch
2024-08-30 11:58:12 +02:00
parent 052a0c7e19
commit c1b8831205
2 changed files with 23 additions and 7 deletions
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5
documentation/RELEASE_NOTES.md
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@ -22,6 +22,11 @@ should also be read to understand what has changed since earlier releases:
## Changes made on the 7.0 branch since 7.0.8.1
### DBE_PROPERTY event rate changed
Updating property fields now only post DBE_PROPERTY events if the
field actually changed.
### Allow users to delete previously created records from the database
From this release, record instances and aliases that have already been loaded

25
modules/database/src/ioc/db/dbAccess.c
View File

@ -1325,6 +1325,7 @@ long dbPut(DBADDR *paddr, short dbrType,
long status = 0;
dbFldDes *pfldDes;
int isValueField;
int propertyUpdate = paddr->pfldDes->prop && precord->mlis.count;
if (special == SPC_ATTRIBUTE)
return S_db_noMod;
@ -1369,8 +1370,22 @@ long dbPut(DBADDR *paddr, short dbrType,
if (nRequest < 1) {
recGblSetSevr(precord, LINK_ALARM, INVALID_ALARM);
} else {
status = dbFastPutConvertRoutine[dbrType][field_type](pbuffer,
paddr->pfield, paddr);
if (propertyUpdate && paddr->field_size <= MAX_STRING_SIZE) {
char propBuffer[MAX_STRING_SIZE];
status = dbFastPutConvertRoutine[dbrType][field_type](pbuffer,
&propBuffer, paddr);
if (!status) {
if (memcmp(paddr->pfield, &propBuffer, paddr->field_size) != 0) {
memcpy(paddr->pfield, &propBuffer, paddr->field_size);
} else {
/* suppress DBE_PROPERTY event if property did not change */
propertyUpdate = 0;
}
}
} else {
status = dbFastPutConvertRoutine[dbrType][field_type](pbuffer,
paddr->pfield, paddr);
}
nRequest = 1;
}
}
@ -1391,11 +1406,7 @@ long dbPut(DBADDR *paddr, short dbrType,
if (precord->mlis.count &&
!(isValueField && pfldDes->process_passive))
db_post_events(precord, pfieldsave, DBE_VALUE | DBE_LOG);
/* If this field is a property (metadata) field,
* then post a property change event (even if the field
* didn't change).
*/
if (precord->mlis.count && pfldDes->prop)
if (propertyUpdate)
db_post_events(precord, NULL, DBE_PROPERTY);
done:
paddr->pfield = pfieldsave;