void OperationHistory::DeleteLastOp(BOOL ReduceOpHistSize)
{
Operation* pOpToDelete = FindLastOp();
// The NowPtr needs to be set to the previous operation - if one exists
// if not then NULL is an OK state for the NowPtr
NowPtr = OpHistoryList.GetPrev(NowPtr);
if (ReduceOpHistSize)
{
DecSize(pOpToDelete->GetSize()); // Reduce history size
}
OpHistoryList.RemoveItem((ListItem*)pOpToDelete); // Remove the operation from the
// history list but don't delete it yet
pOpToDelete->DeleteOnEnd(); // Mark it for deletion when it's safe
// to do so.
}
void OperationHistory::DeletePrevToLastOp(BOOL ReduceOpHistSize)
{
// find the previous operation
Operation *pPrev = (Operation *)OpHistoryList.GetPrev(NowPtr); // get the PrevToLastOp
if (pPrev != NULL)
{
if (ReduceOpHistSize)
{
DecSize(pPrev->GetSize()); // Reduce history size
}
// remove it from the list
OpHistoryList.RemoveItem((ListItem*)pPrev); // Remove the operation from the
// history list
// delete it
delete pPrev;
}
}