public void Cancel(Exception e) { Logging.Error("Cancelling execution of graph {0}, due to exception:\n{1}", this.Index, e); lock (this) { if (this.currentState == InternalComputationState.Failed) { return; } this.currentState = InternalComputationState.Failed; this.Exception = e; if (this.Controller.NetworkChannel != null) { MessageHeader header = MessageHeader.GraphFailure(this.index); SendBufferPage page = SendBufferPage.CreateSpecialPage(header, 0); BufferSegment segment = page.Consume(); Logging.Error("Broadcasting graph failure message"); this.Controller.NetworkChannel.BroadcastBufferSegment(header, segment); } this.ProgressTracker.Cancel(); } }
private void AnnounceStartup(int barrierId) { int seqno = this.GetSequenceNumber(-1); SendBufferPage startupPage = SendBufferPage.CreateSpecialPage(MessageHeader.GenerateBarrierMessageHeader(barrierId), seqno, this.HeaderSerializer); BufferSegment startupSegment = startupPage.Consume(); for (int i = 0; i < this.connections.Count - 2; ++i) startupSegment.Copy(); for (int i = 0; i < this.connections.Count; ++i) { if (i != this.localProcessID) { Logging.Info("Sending startup message to process {0}", i); this.SendBufferSegment(startupPage.CurrentMessageHeader, i, startupSegment); } } }
public void AnnounceCheckpoint() { int seqno = this.GetSequenceNumber(-1); SendBufferPage checkpointPage = SendBufferPage.CreateSpecialPage(MessageHeader.Checkpoint, seqno, this.Controller.SerializationFormat.GetSerializer<MessageHeader>()); BufferSegment checkpointSegment = checkpointPage.Consume(); for (int i = 0; i < this.connections.Count - 2; ++i) checkpointSegment.Copy(); for (int i = 0; i < this.connections.Count; ++i) { if (i != this.localProcessID) { Logging.Info("Sending checkpoint message to process {0}", i); this.SendBufferSegment(checkpointPage.CurrentMessageHeader, i, checkpointSegment); } } }
private void AnnounceShutdown() { Logging.Progress("Announcing shutdown"); int seqno = this.GetSequenceNumber(-1); SendBufferPage shutdownPage = SendBufferPage.CreateShutdownMessagePage(seqno, this.HeaderSerializer); BufferSegment shutdownSegment = shutdownPage.Consume(); for (int i = 0; i < this.connections.Count - 2; ++i) shutdownSegment.Copy(); for (int i = 0; i < this.connections.Count; ++i) { if (i != this.localProcessID) { Logging.Progress("Sending shutdown message to process {0}", i); this.SendBufferSegment(shutdownPage.CurrentMessageHeader, i, shutdownSegment); } } }