KstObject::UpdateType KstEquation::update(int update_counter) {
Q_ASSERT(myLockStatus() == KstRWLock::WRITELOCKED);
bool force = dirty();
setDirty(false);
bool xUpdated = false;
bool usedUpdated = false;
if (KstObject::checkUpdateCounter(update_counter) && !force) {
return lastUpdateResult();
}
if (!_pe) {
return setLastUpdateResult(NO_CHANGE);
}
assert(update_counter >= 0);
if (_xInVector == _inputVectors.end()) {
_xInVector = _inputVectors.find(XINVECTOR);
if (!*_xInVector) { // This is technically sort of fatal
return setLastUpdateResult(NO_CHANGE);
}
}
writeLockInputsAndOutputs();
KstVectorPtr v = *_xInVector;
xUpdated = KstObject::UPDATE == v->update(update_counter);
Equation::Context ctx;
ctx.sampleCount = _ns;
ctx.xVector = v;
usedUpdated = _pe && KstObject::UPDATE == _pe->update(update_counter, &ctx);
KstObject::UpdateType rc = NO_CHANGE; // if force, rc = UPDATE anyway.
if (force || xUpdated || usedUpdated) {
_isValid = FillY(force);
rc = UPDATE;
}
v = *_yOutVector;
if (rc == UPDATE) {
v->setDirty();
}
v->update(update_counter);
unlockInputsAndOutputs();
return setLastUpdateResult(rc);
}
void Equation::internalUpdate() {
Q_ASSERT(myLockStatus() == KstRWLock::WRITELOCKED);
if (!_pe) {
return;
}
writeLockInputsAndOutputs();
Equations::Context ctx;
ctx.sampleCount = _ns;
ctx.xVector = _xInVector;
_pe->update(&ctx);
_isValid = FillY(true);
unlockInputsAndOutputs();
updateVectorLabels();
return;
}