void Remove(WatchDogSession session)
{
if (session == null)
{
throw new ArgumentNullException(nameof(session));
}
lock (_syncRoot)
{
if (_sessions.Contains(session))
{
_sessions.Remove(session);
}
}
}
public IWatchDogSession Watch(IDisposable member)
{
if (member == null)
{
throw new ArgumentNullException(nameof(member));
}
var membership = new WatchDogSession(member, Remove, _clock);
lock (_syncRoot)
{
_sessions.Add(membership);
}
return(membership);
}