public virtual IReplica?TryGet(PublicationRef publicationRef)
{
var random = publicationRef.PublicationId.HashCode;
OnOperation(random);
if (!_handles.TryGetValue(publicationRef, out var handle))
{
return(null);
}
var target = (IReplica?)handle.Target;
if (target != null)
{
return(target);
}
// GCHandle target == null => we have to recycle it
if (!_handles.TryRemove(publicationRef, handle))
{
// Some other thread already removed this entry
return(null);
}
// The thread that succeeds in removal releases gcHandle as well
_gcHandlePool.Release(handle, random);
return(null);
}
public virtual (IReplica Replica, bool IsNew) GetOrRegister(PublicationRef publicationRef, Func <IReplica> replicaFactory)
{
var random = publicationRef.PublicationId.HashCode;
OnOperation(random);
var spinWait = new SpinWait();
var newReplica = (IReplica?)null; // Just to make sure we store this ref
while (true)
{
// ReSharper disable once HeapView.CanAvoidClosure
var handle = _handles.GetOrAdd(publicationRef, _ => {
newReplica = replicaFactory.Invoke();
return(_gcHandlePool.Acquire(newReplica, random));
});
var target = (IReplica?)handle.Target;
if (target != null)
{
if (target == newReplica)
{
return(target, true);
}
(newReplica as IReplicaImpl)?.DisposeTemporaryReplica();
return(target, false);
}
// GCHandle target == null => we have to recycle it
if (_handles.TryRemove(publicationRef, handle))
{
// The thread that succeeds in removal releases gcHandle as well
_gcHandlePool.Release(handle, random);
}
// And since we didn't manage to add the replica, let's retry
spinWait.SpinOnce();
}
}
public IReplica?TryGet(PublicationRef publicationRef) => ReplicaRegistry.Instance.TryGet(publicationRef);
public ReplicaInput(IReplicaImpl replicaImpl, PublicationRef publicationRef)
: base(replicaImpl)
{
ReplicaImpl = replicaImpl;
PublicationRef = publicationRef;
}
public static IReplica <T> GetOrAdd <T>(this IReplicator replicator,
PublicationRef publicationRef, bool requestUpdate = false)
{
var output = new Result <T>(default !, ReplicaHasBeenNeverUpdatedError);
public PublicationStateInfo(PublicationRef publicationRef) => PublicationRef = publicationRef;
