/// <summary>
/// Adds an active publisher.
/// </summary>
/// <param name="instance">The instance.</param>
internal void AddActivePublisher(Publisher instance)
{
_activePublishersLock.EnterWriteLock();
if (!ActivePublishers.ContainsKey(instance))
{
ActivePublishers.Add(instance, Interlocked.Increment(ref _nextModuleID));
}
_activePublishersLock.ExitWriteLock();
}
/// <summary>
/// Gets the publisher id.
/// </summary>
/// <param name="p">The p.</param>
/// <returns></returns>
internal int GetPublisherId(object p)
{
_activePublishersLock.EnterReadLock();
try
{
return(ActivePublishers.Where(k => k.Key.Instance == p).Select(k => k.Value).DefaultIfEmpty(-1).FirstOrDefault());
}
finally
{
_activePublishersLock.ExitReadLock();
}
}
/// <summary>
/// Determines whether <paramref name="publisher"/> is an active publisher.
/// </summary>
/// <param name="publisher">The publisher.</param>
/// <returns>
/// <c>true</c> if [is active publisher] [the specified publisher]; otherwise, <c>false</c>.
/// </returns>
internal bool IsActivePublisher(object publisher)
{
_activePublishersLock.EnterReadLock();
try
{
return(ActivePublishers.Any(k => k.Key.Instance == publisher));
}
finally
{
_activePublishersLock.ExitReadLock();
}
}
/// <summary>
/// Removes the active publisher.
/// </summary>
/// <param name="instance">The instance.</param>
internal void RemoveActivePublisher(Publisher instance)
{
if (instance == null)
{
return;
}
_activePublishersLock.EnterWriteLock();
if (ActivePublishers.ContainsKey(instance))
{
ActivePublishers.Remove(instance);
}
_activePublishersLock.ExitWriteLock();
}
internal Publisher GetPublisher(object instance)
{
try
{
if (IsActivePublisher(instance))
{
_activePublishersLock.EnterReadLock();
return(ActivePublishers.Where(p => p.Key.Instance == instance).Select(p => p.Key).FirstOrDefault());
}
return(null);
}
finally
{
_activePublishersLock.ExitReadLock();
}
}
/// <summary>
/// Gets the publisher to a certain ID.
/// </summary>
/// <param name="id">The id.</param>
/// <returns>The publisher object associated with the specified <paramref name="id"/>, or <c>null</c> if no such id has been issued</returns>
internal Publisher GetPublisher(int id)
{
_activePublishersLock.EnterReadLock();
try
{
if (ActivePublishers.Values.Contains(id))
{
return(ActivePublishers.Where(p => p.Value == id).Select(p => p.Key).FirstOrDefault());
}
return(null);
}
finally
{
_activePublishersLock.ExitReadLock();
}
}