public async ValueTask <bool> RemoveSubscription()
{
if (_disposed == 1)
{
throw new ObjectDisposedException(nameof(EventSubscriptionBase));
}
// accepted race condition, _busy can be disposed here and will throw an ObjectDisposedException
await _busy.WaitAsync().CfAwait();
try
{
if (_subscriptionsCount == 0)
{
return(true); // TODO: should we throw?
}
if (_subscriptionsCount > 1)
{
return(true);
}
var removed = await ClusterEvents.RemoveSubscriptionAsync(_subscriptionId).CfAwait();
if (removed)
{
_subscriptionsCount--;
}
return(removed);
}
finally
{
_busy.Release();
}
}
public async ValueTask DisposeAsync()
{
if (Interlocked.CompareExchange(ref _disposed, 1, 0) == 1)
{
return;
}
await _busy.WaitAsync().CfAwait();
try
{
if (_subscriptionsCount == 0)
{
return;
}
// remove, ignore result
await ClusterEvents.RemoveSubscriptionAsync(_subscriptionId).CfAwait();
}
finally
{
_busy.Release();
}
_busy.Dispose();
// this should not be a warning
// https://github.com/dotnet/roslyn-analyzers/issues/3909
// https://github.com/dotnet/roslyn-analyzers/issues/3675
// https://github.com/dotnet/roslyn-analyzers/pull/3679
#pragma warning disable CA1816 // Dispose methods should call SuppressFinalize
GC.SuppressFinalize(this);
#pragma warning restore CA1816
}