Cadence ITK Together with OpenAccess API

Dear M. McGehee,

Currently, I am a severely stuck with a practical issue trying to get an OpenAccess plugin working from Cadence Virtuoso.
From the point of view of OpenAccess, everything is very well documented and clear. However, it is not from the point of Cadence. It is also not clear if we maybe need the Cadence Integrator’s Toolkit (ITK), or not.

-We have an Openaccess plugin file (.plg extension, see opnPCell.plg herunder) which was placed in the path /Cadence/IC6.1/oa_v22.04.028/data/plugins/

-We have the C++ code “opnPcell.cpp” (see below) which was compiled into a shared library “libopnPcell.so” and placed in the path /Cadence/IC6.1/oa_v22.04.028/lib/linux_rhel30_gcc411_32/opt

These come from the standard OpenAccess 2.2 release.

Now my question is : how do I tell Cadence Virtuoso (6.1.3) to “start up” the
plugin when instantiating a PCell, i.e. to call the getClassObject method of “libopnPcell.so” and instantiate an object of class “opnPcell” ?
Do we need the Cadence ITK ?

I cannot find any documentation about this on Sourcelink or newsgroups.
Could you give us a hint on how to proceed?

Best regards.

————————– file opnPCell.plg ————–

—————————file opnPcell.cpp —————-
#include “opnPcell.h”

Factory opnPcell::factory(”opnPcell”);

const oaString opnPcellMsgs[] = {
“Invalid value for the ‘%s’ parameter supplied.”
};

long
getClassObject(const char *classID,
const Guid &interfaceID,
void **ptr)
{
return FactoryBase::getClassObject(classID, interfaceID, ptr);
}

oaPcellDef *
opnPcell::getPcellDef()
{
return new opnPcellDef(this);
}

void
opnPcell::onUnbind(oaDesign *design,
oaPcellDef *pcellDef)
{
delete pcellDef;
}

void
opnPcell::onEval(oaDesign *design,
oaPcellDef *pcellDef)
{
oaParam param;
oaParamArray params;

design->getParams(params);

oaUInt4 dbu = 1000;
oaInt4 w;
oaInt4 l;

if (params.find(”width”, param)) {
if (param.getType() == oacDoubleParamType) {
w = oaInt4(param.getDoubleVal() * dbu);
}
}

if (w < 1) {
throw opnError(opnParamInvalid, (const char *) "width");
};

if (params.find("length", param)) {
if (param.getType() == oacDoubleParamType) {
l = oaInt4(param.getDoubleVal() * dbu);
}
}

if (l getTopBlock();

if (!bk) {
bk = oaBlock::create(design);
}

oaRect *box1 = oaRect::create(bk, 2, 1, oaBox(-l, -w, l, w));

// Double w,l and swap
w *= 2;
l *= 2;
oaRect *box2 = oaRect::create(bk, 3, 1, oaBox(-w, -l, w, l));
}

oaUInt4
opnPcell::calcDiskSize(oaPcellDef *pcellDef) const
{
return 0;
}

opnPcellDef::opnPcellDef(IPcell *pcell)
: oaPcellDef(pcell)
{
data = “MyopnPcellData”;
}

inline
opnException::opnException(oaUInt4 msgIdIn)
: oaException(msgIdIn)
{
}

const oaString &
opnException::getFormatString() const
{
return opnPcellMsgs[msgId];
}

opnError::opnError(oaUInt4 msgIdIn,
…)
: opnException(msgIdIn)
{
va_list args;

va_start(args, msgIdIn);
format(args);
va_end(args);
}