private void StateAccessed(int frame)
{
if (frame == 0 && _movie.StartsFromSavestate)
{
return;
}
tsmState state = States[frame];
bool removed = accessed.Remove(state);
accessed.Add(state);
if (States[frame].IsOnDisk)
{
if (!States[accessed[0].Frame].IsOnDisk)
{
MoveStateToDisk(accessed[0].Frame);
}
MoveStateToMemory(frame);
}
if (!removed && accessed.Count > maxStates)
{
accessed.RemoveAt(0);
}
}
public void ClearStateHistory()
{
if (States.Any())
{
tsmState power = States.Values.FirstOrDefault(s => s.Frame == 0);
StateAccessed(power.Frame);
States.Clear();
accessed.Clear();
SetState(0, power.State);
Used = (ulong)power.State.Length;
clearDiskStates();
}
}
private Point findState(tsmState s)
{
Point ret = new Point(0, -1);
ret.X = s.Frame;
if (!States.ContainsValue(s))
{
if (BranchStates.ContainsKey(s.Frame))
{
ret.Y = BranchStates[s.Frame].Values.IndexOf(s);
}
if (ret.Y == -1)
{
return(new Point(-1, -2));
}
}
return(ret);
}
private Point findState(tsmState s)
{
Point ret = new Point(0, -1);
ret.X = s.Frame;
if (!States.ContainsValue(s))
{
if (BranchStates.ContainsKey(s.Frame))
ret.Y = BranchStates[s.Frame].Values.IndexOf(s);
if (ret.Y == -1)
return new Point(-1, -2);
}
return ret;
}
/// <summary>
/// X is the frame of the state, Y is the branch (-1 for current).
/// </summary>
private Point StateToRemove()
{
int markerSkips = maxStates / 2;
// X is frame, Y is branch
Point shouldRemove = new Point(-1, -1);
int i = 0;
// lowPrioritySates (e.g. states with only lag frames between them)
do
{
if (lowPriorityStates.Count > i)
{
shouldRemove = findState(lowPriorityStates[i]);
}
else
{
break;
}
// Keep marker states
markerSkips--;
if (markerSkips < 0)
{
shouldRemove.X = -1;
}
i++;
} while (StateIsMarker(shouldRemove.X, shouldRemove.Y) && markerSkips > -1 || shouldRemove.X == 0);
// by last accessed
markerSkips = maxStates / 2;
if (shouldRemove.X < 1)
{
i = 0;
do
{
shouldRemove = findState(accessed[i]);
// Keep marker states
markerSkips--;
if (markerSkips < 0)
{
shouldRemove.X = -1;
}
i++;
} while (StateIsMarker(shouldRemove.X, shouldRemove.Y) && markerSkips > -1 || shouldRemove.X == 0);
}
if (shouldRemove.X < 1) // only found marker states above
{
if (BranchStates.Any())
{
var kvp = BranchStates.ElementAt(1);
shouldRemove.X = kvp.Key;
shouldRemove.Y = kvp.Value.Keys[0];
}
else
{
tsmState s = States.Values[1];
shouldRemove.X = s.Frame;
shouldRemove.Y = -1;
}
}
return(shouldRemove);
}
