public static bool Remove(string sign)
{
lock (_Lock)
{
AutoValue val;
if (!_Dict.TryGetValue(sign, out val)) return false;
if (--(val.RefCount) == 0)
{
_Dict.Remove(sign);
return true;
}
_Dict[sign] = new AutoValue(val.RefCount, val.Sequence);
return false;
}
}
public static long AddSign(string sign)
{
lock (_Lock)
{
AutoValue val;
if (!_Dict.TryGetValue(sign, out val))
{
++_NextSequence;
_Dict.Add(sign, new AutoValue(1, _NextSequence));
return _NextSequence;
}
_Dict[sign] = new AutoValue(++(val.RefCount), val.Sequence);
return val.Sequence;
}
}
public static long AddSign(string sign)
{
lock (_Lock)
{
AutoValue val;
if (!_Dict.TryGetValue(sign, out val))
{
++_NextSequence;
_Dict.Add(sign, new AutoValue(1, _NextSequence));
return(_NextSequence);
}
_Dict[sign] = new AutoValue(++(val.RefCount), val.Sequence);
return(val.Sequence);
}
}
public static bool Remove(string sign)
{
lock (_Lock)
{
AutoValue val;
if (!_Dict.TryGetValue(sign, out val))
{
return(false);
}
if (--(val.RefCount) == 0)
{
_Dict.Remove(sign);
return(true);
}
_Dict[sign] = new AutoValue(val.RefCount, val.Sequence);
return(false);
}
}
