public void RemoveSubscription(ISubscription subscription)
{
if (subscription == null)
{
throw new ArgumentNullException("subscription");
}
try
{
SubscriptionLock.EnterWriteLock();
MarkUsed();
Subscriptions.Remove(subscription);
if (Subscriptions.Count == 0)
{
// HasSubscriptions -> NoSubscriptions
Interlocked.CompareExchange(ref State,
TopicState.NoSubscriptions,
TopicState.HasSubscriptions);
}
}
finally
{
SubscriptionLock.ExitWriteLock();
}
}
public void AddSubscription(ISubscription subscription)
{
if (subscription == null)
{
throw new ArgumentNullException("subscription");
}
try
{
SubscriptionLock.EnterWriteLock();
MarkUsed();
Subscriptions.Add(subscription);
// Created -> HasSubscriptions
Interlocked.CompareExchange(ref State,
TopicState.HasSubscriptions,
TopicState.NoSubscriptions);
}
finally
{
SubscriptionLock.ExitWriteLock();
}
}
public void RemoveSubscription(ISubscription subscription)
{
if (subscription == null)
{
throw new ArgumentNullException("subscription");
}
try
{
SubscriptionLock.EnterWriteLock();
_lastUsed = DateTime.UtcNow;
if (_subscriptionIdentities.Remove(subscription.Identity))
{
Subscriptions.Remove(subscription);
}
if (Subscriptions.Count == 0)
{
// Change the state from active -> no subs
Interlocked.CompareExchange(ref State, TopicState.NoSubscriptions, TopicState.Active);
}
}
finally
{
SubscriptionLock.ExitWriteLock();
}
}
public void AddSubscription(ISubscription subscription)
{
try
{
SubscriptionLock.EnterWriteLock();
_lastUsed = DateTime.UtcNow;
if (_subcriptionIdentities.Add(subscription.Identity))
{
Subscriptions.Add(subscription);
}
}
finally
{
SubscriptionLock.ExitWriteLock();
}
}
public void AddSubscription(ISubscription subscription)
{
if (subscription == null)
{
throw new ArgumentNullException("subscription");
}
try
{
SubscriptionLock.EnterWriteLock();
_lastUsed = DateTime.UtcNow;
if (_subscriptionIdentities.Add(subscription.Identity))
{
Subscriptions.Add(subscription);
}
}
finally
{
SubscriptionLock.ExitWriteLock();
}
}
