Experimental Physics and
Industrial Control System

I have seen that dbGetFieldType() and dbGetLinkType() are about to be removed. What is the replacement for dbGetLinkType()? I want to find out if a field is a PV link.

int dbLinkIsDefined(const struct link *plink);  /* 0 or 1 */
int dbLinkIsConstant(const struct link *plink); /* 0 or 1 */
int dbLinkIsVolatile(const struct link *plink); /* 0 or 1 */
int dbIsLinkConnected(const struct link *plink); /* 0 or 1 */

I use it in a utility function "dbll" (database list links) to show which records link to given records or field: dbll recordpattern[.field]

The core of the function is:

    for (status = dbFirstRecordType(&dbEntry); !status; status = dbNextRecordType(&dbEntry))
    for (status = dbFirstRecord(&dbEntry); !status; status = dbNextRecord(&dbEntry))
    {
#if EPICS_VERSION*10000+EPICS_REVISION*100+EPICS_MODIFICATION >= 31411
        if (dbIsAlias(&dbEntry)) continue;
#endif
        for (status = dbFirstField(&dbEntry, 0); !status; status = dbNextField(&dbEntry, 0))
        {
            if (dbGetLinkType(&dbEntry) == DCT_LINK_PV)
            {
                const char* target = ((DBLINK *)dbEntry.pfield)->value.pv_link.pvname;
                if (!match || (
                        (strchr(target, '.') ? 1 : 0) == (d ? 1 : 0) ?
                            epicsStrGlobMatch(target, match) :
                            alt_match ? epicsStrGlobMatch(target, alt_match) : 0))
                {
                    printf("%s.%s ==> %s\n", dbGetRecordName(&dbEntry), dbGetFieldName(&dbEntry),
                        dbGetString(&dbEntry));
                }
            }
        }
    }
    dbFinishEntry(&dbEntry);

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