DECLARE_EXPORT Flow::~Flow()
{
// Set a flag to make sure the level computation is triggered again
HasLevel::triggerLazyRecomputation();
// Delete existing flowplans
if (getOperation() && getBuffer())
{
// Loop over operationplans
for(OperationPlan::iterator i(getOperation()); i != OperationPlan::end(); ++i)
// Loop over flowplans
for(OperationPlan::FlowPlanIterator j = i->beginFlowPlans(); j != i->endFlowPlans(); )
if (j->getFlow() == this) j.deleteFlowPlan();
else ++j;
}
// Delete the flow from the operation and the buffer
if (getOperation())
getOperation()->flowdata.erase(this);
if (getBuffer())
getBuffer()->flows.erase(this);
// Clean up alternate flows
if (hasAlts)
{
// The flow has alternates.
// Make a new flow the leading one. Or if there is only one alternate
// present it is not marked as an alternate any more.
unsigned short cnt = 0;
int minprio = INT_MAX;
Flow* newLeader = NULL;
for (Operation::flowlist::iterator i = getOperation()->flowdata.begin();
i != getOperation()->flowdata.end(); ++i)
if (i->altFlow == this)
{
cnt++;
if (i->priority < minprio)
{
newLeader = &*i;
minprio = i->priority;
}
}
if (cnt < 1)
throw LogicException("Alternate flows update failure");
else if (cnt == 1)
// No longer an alternate any more
newLeader->altFlow = NULL;
else
{
// Mark a new leader flow
newLeader->hasAlts = true;
newLeader->altFlow = NULL;
for (Operation::flowlist::iterator i = getOperation()->flowdata.begin();
i != getOperation()->flowdata.end(); ++i)
if (i->altFlow == this) i->altFlow = newLeader;
}
}
if (altFlow)
{
// The flow is an alternate of another one.
// If it was the only alternate, then the hasAlts flag on the parent
// flow needs to be set back to false
bool only_one = true;
for (Operation::flowlist::iterator i = getOperation()->flowdata.begin();
i != getOperation()->flowdata.end(); ++i)
if (i->altFlow == altFlow)
{
only_one = false;
break;
}
if (only_one) altFlow->hasAlts = false;
}
}
//////////////////////////////////////////////////////////////////////////////
///
/// Determine if the buffer contains a division by zero
///
//////////////////////////////////////////////////////////////////////////////
bool controller::isDividedByZeroDetected(unsigned char* ptr)
{
return isValidCommand(ptr) && getSecondOperand(ptr) == 0 && getOperation(ptr) == DIVIDE;
}
