static long fetch_values(aSubRecord *prec)
{
long status;
int i;
if (prec->lflg == aSubLFLG_READ) {
/* Get the Subroutine Name and look it up if changed */
status = dbGetLink(&prec->subl, DBR_STRING, prec->snam, 0, 0);
if (status)
return status;
if (prec->snam[0] != 0 &&
strcmp(prec->snam, prec->onam)) {
GENFUNCPTR pfunc = (GENFUNCPTR)registryFunctionFind(prec->snam);
if (!pfunc)
return S_db_BadSub;
prec->sadr = pfunc;
strcpy(prec->onam, prec->snam);
}
}
/* Get the input link values */
for (i = 0; i < NUM_ARGS; i++) {
long nRequest = (&prec->noa)[i];
status = dbGetLinkValue(&(&prec->inpa)[i], (&prec->fta)[i], (&prec->a)[i], 0,
&nRequest);
if (nRequest > 0)
(&prec->nea)[i] = nRequest;
if (status)
return status;
}
return 0;
}
/** Constructor for function attribute
* \param[in] pName The name of the attribute to be created; case-insensitive.
* \param[in] pDescription The description of the attribute.
* \param[in] pSource The symbol name for the function to be called to get the value of the parameter.
* \param[in] pParam A string that will be passed to the function, typically to specify what/how to get the value.
*/
functAttribute::functAttribute(const char *pName, const char *pDescription, const char *pSource, const char *pParam)
: NDAttribute(pName, pDescription, NDAttrSourceFunct, pSource, NDAttrUndefined, 0),
pFunction(0), functionPvt(0)
{
static const char *functionName = "functAttribute";
/* Create the static pasynUser if not already done */
if (!pasynUserSelf) pasynUserSelf = pasynManager->createAsynUser(0,0);
if (pParam)
functParam = epicsStrDup(pParam);
else
functParam = epicsStrDup("");
if (!pSource) {
asynPrint(pasynUserSelf, ASYN_TRACE_ERROR,
"%s:%s: ERROR, must specify function name\n",
driverName, functionName);
goto error;
}
this->pFunction = (NDAttributeFunction)registryFunctionFind(pSource);
if (!this->pFunction) {
asynPrint(pasynUserSelf, ASYN_TRACE_ERROR,
"%s:%s: ERROR, cannot find function %s\n",
driverName, functionName, pSource);
goto error;
}
error:
return;
}
static long init_record(subRecord *prec, int pass)
{
SUBFUNCPTR psubroutine;
long status = 0;
struct link *plink;
int i;
double *pvalue;
if (pass==0) return(0);
plink = &prec->inpa;
pvalue = &prec->a;
for (i = 0; i < INP_ARG_MAX; i++, plink++, pvalue++) {
if (plink->type == CONSTANT) {
recGblInitConstantLink(plink, DBF_DOUBLE, pvalue);
}
}
if (prec->inam[0]) {
/* convert the initialization subroutine name */
psubroutine = (SUBFUNCPTR)registryFunctionFind(prec->inam);
if (psubroutine == 0) {
recGblRecordError(S_db_BadSub, (void *)prec, "recSub(init_record)");
return S_db_BadSub;
}
/* invoke the initialization subroutine */
status = (*psubroutine)(prec);
}
if (prec->snam[0] == 0) {
epicsPrintf("%s.SNAM is empty\n", prec->name);
prec->pact = TRUE;
return 0;
}
prec->sadr = (SUBFUNCPTR)registryFunctionFind(prec->snam);
if (prec->sadr == NULL) {
recGblRecordError(S_db_BadSub, (void *)prec, "recSub(init_record)");
return S_db_BadSub;
}
prec->mlst = prec->val;
prec->alst = prec->val;
prec->lalm = prec->val;
return 0;
}
static long special(DBADDR *paddr, int after)
{
aSubRecord *prec = (aSubRecord *)paddr->precord;
if (after &&
prec->lflg == aSubLFLG_IGNORE) {
if (prec->snam[0] == 0)
return 0;
prec->sadr = (GENFUNCPTR)registryFunctionFind(prec->snam);
if (!prec->sadr) {
recGblRecordError(S_db_BadSub, (void *)prec, prec->snam);
return S_db_BadSub;
}
}
return 0;
}
static long special(DBADDR *paddr, int after)
{
subRecord *prec = (subRecord *)paddr->precord;
if (!after) {
if (prec->snam[0] == 0 && prec->pact)
prec->pact = FALSE;
prec->rpro = FALSE;
return 0;
}
if (prec->snam[0] == 0) {
epicsPrintf("%s.SNAM is empty\n", prec->name);
prec->pact = TRUE;
return 0;
}
prec->sadr = (SUBFUNCPTR)registryFunctionFind(prec->snam);
if (prec->sadr) return 0;
recGblRecordError(S_db_BadSub, (void *)prec,
"subRecord(special) registryFunctionFind failed");
return S_db_BadSub;
}
static void registryFunctionFindCallFunc(const iocshArgBuf *args) {
printf("%p\n", (void*) registryFunctionFind(args[0].sval));
}
static long init_record(aSubRecord *prec, int pass)
{
GENFUNCPTR pfunc;
long status;
int i;
status = 0;
if (pass == 0) {
/* Allocate memory for arrays */
initFields(&prec->fta, &prec->noa, &prec->nea, Ifldnames,
&prec->a, NULL);
initFields(&prec->ftva, &prec->nova, &prec->neva, Ofldnames,
&prec->vala, &prec->ovla);
return 0;
}
/* Initialize the Subroutine Name Link */
switch (prec->subl.type) {
case CONSTANT:
recGblInitConstantLink(&prec->subl, DBF_STRING, prec->snam);
break;
case PV_LINK:
case DB_LINK:
case CA_LINK:
break;
default:
recGblRecordError(S_db_badField, (void *)prec,
"aSubRecord(init_record) Bad SUBL link type");
return S_db_badField;
}
/* Initialize Input Links */
for (i = 0; i < NUM_ARGS; i++) {
struct link *plink = &(&prec->inpa)[i];
switch (plink->type) {
case CONSTANT:
if ((&prec->noa)[i] < 2) {
if (recGblInitConstantLink(plink, (&prec->fta)[i], (&prec->a)[i])) {
prec->udf = FALSE;
} else
prec->udf = TRUE;
}
break;
case PV_LINK:
case CA_LINK:
case DB_LINK:
break;
default:
recGblRecordError(S_db_badField, (void *)prec,
"aSubRecord(init_record) Illegal INPUT LINK");
status = S_db_badField;
break;
}
}
if (status)
return status;
/* Initialize Output Links */
for (i = 0; i < NUM_ARGS; i++) {
switch ((&prec->outa)[i].type) {
case CONSTANT:
case PV_LINK:
case CA_LINK:
case DB_LINK:
break;
default:
recGblRecordError(S_db_badField, (void *)prec,
"aSubRecord(init_record) Illegal OUTPUT LINK");
status = S_db_badField;
}
}
if (status)
return status;
/* Call the user initialization routine if there is one */
if (prec->inam[0] != 0) {
pfunc = (GENFUNCPTR)registryFunctionFind(prec->inam);
if (pfunc) {
pfunc(prec);
} else {
recGblRecordError(S_db_BadSub, (void *)prec,
"aSubRecord::init_record - INAM subr not found");
return S_db_BadSub;
}
}
if (prec->lflg == aSubLFLG_IGNORE &&
prec->snam[0] != 0) {
pfunc = (GENFUNCPTR)registryFunctionFind(prec->snam);
if (pfunc)
prec->sadr = pfunc;
else {
recGblRecordError(S_db_BadSub, (void *)prec,
"aSubRecord::init_record - SNAM subr not found");
return S_db_BadSub;
}
}
strcpy(prec->onam, prec->snam);
prec->oval = prec->val;
return 0;
}
static long initConversion(
const char *name, const char *bdir, const char *tdir,
menuCvtMethod meth, const char *spec, void **psub)
{
*psub = 0;
switch (meth) {
case menuCvtMethodLinear:
{
break;
}
case menuCvtMethodSubroutine:
{
REGISTRYFUNCTION csub;
if(spec[0]==0) {
nerrmsg(name, "configuration error: SPEC not specified");
return -1;
}
csub = registryFunctionFind(spec);
if (!csub) {
nerrmsg(name, "configuration error: "
"SPEC is not the name of a registered subroutine");
return -1;
}
*psub = csub;
break;
}
case menuCvtMethod1DTable:
case menuCvtMethod1DTableInverted:
{
csm_function *csub;
char temp[BDIR_SIZE+TDIR_SIZE+SPEC_SIZE+2];
csub = csm_new_function();
if (!csub) {
nerrmsg(name, "csm_new_function failed");
return -1;
}
sprintf(temp, "%s/%s/%s", bdir, tdir, spec);
if (!csm_read_1d_table(temp, csub)) {
nerrmsg(name, "configuration error: "
"File %s is not a valid 1-parameter table", temp);
csm_free(csub);
return -1;
}
*psub = csub;
break;
}
case menuCvtMethod2DTable:
{
csm_function *csub;
char temp[BDIR_SIZE+TDIR_SIZE+SPEC_SIZE+2];
csub = csm_new_function();
if (!csub) {
nerrmsg(name, "csm_new_function failed");
return -1;
}
sprintf(temp, "%s/%s/%s", bdir, tdir, spec);
if (!csm_read_2d_table(temp, csub)) {
nerrmsg(name, "configuration error: "
"File %s is not a valid 2-parameter table", temp);
csm_free(csub);
return -1;
}
*psub = csub;
break;
}
}
return 0;
}