private IFrame GetTheMostUselessFrame(IPageReference pageReference)
{
var dict = new Dictionary <IFrame, int>();
foreach (var frame in _physicalMemory)
{
dict[frame] = 0;
}
var futureReferences = _pageReferences.Select(item => item).ToList();
futureReferences.RemoveRange(0, futureReferences.IndexOf(pageReference));
var referencesCount = _pageReferences.Count;
foreach (var frame in dict.Keys.ToList())
{
if (frame.Page == null)
{
dict[frame] = referencesCount;
break;
}
var index = futureReferences.FindIndex(r => r.PageId.Equals(frame.Page.Id));
if (index == -1)
{
dict[frame] = referencesCount;
break;
}
dict[frame] = index;
}
var uselessFrame = dict.OrderByDescending(d => d.Value).First().Key;
return(uselessFrame);
}
public IReplacingVisitor CreateReplacingVisitor(IPageReference pageReference)
{
PagesErrors++;
var pageId = pageReference.PageId;
var frameId = GetTheMostUselessFrame(pageReference).Id;
return(new ReplacingVisitor(pageId, frameId));
}
public IReplacingVisitor CreateReplacingVisitor(IPageReference pageReference)
{
PagesErrors++;
Guid pageId = pageReference.PageId;
Guid frameId = GetNextFrame().Id;
return(new ReplacingVisitor(pageId, frameId));
}
public IReplacingVisitor CreateReplacingVisitor(IPageReference pageReference)
{
PagesErrors++;
var pageId = pageReference.PageId;
var frameId = GetLeastRecentlyUsedFrame().Id;
return(new ReplacingVisitor(pageId, frameId));
}
public IReplacingVisitor CreateReplacingVisitor(IPageReference pageReference)
{
PagesErrors++;
var pageId = pageReference.PageId;
var frameId = GetRandomFrame();
return(new ReplacingVisitor(pageId, frameId));
}
public IReplacingVisitor CreateReplacingVisitor(IPageReference pageReference)
{
PagesErrors++;
_enumerator.MoveNext();
var pageId = pageReference.PageId;
var frameId = _enumerator.Current;
return(new ReplacingVisitor(pageId, frameId));
}
