org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/component/TmfEventProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2010 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.component;
  14
  15 import org.eclipse.linuxtools.tmf.event.TmfEvent;
  16 import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
  17 import org.eclipse.linuxtools.tmf.request.ITmfDataRequest;
  18 import org.eclipse.linuxtools.tmf.request.ITmfEventRequest;
  19 import org.eclipse.linuxtools.tmf.request.TmfCoalescedEventRequest;
  20
  21 /**
  22  * <b><u>TmfEventProvider</u></b>
  23  * <p>
  24  * Implement me. Please.
  25  */
  26 public abstract class TmfEventProvider<T extends TmfEvent> extends TmfDataProvider<T> {
  27
  28         public TmfEventProvider(Class<T> type) {
  29                 super("TmfEventProvider", type);
  30         }
  31
  32         public TmfEventProvider(Class<T> type, int queueSize) {
  33                 super("TmfEventProvider", type, queueSize);
  34         }
  35
  36         @Override
  37         public boolean isCompleted(ITmfDataRequest<T> request, T data, int nbRead) {
  38                 boolean dataRequestCompleted = super.isCompleted(request, data, nbRead);
  39                 if (!dataRequestCompleted && request instanceof ITmfEventRequest<?> && data != null) {
  40                         TmfTimestamp endTime = ((ITmfEventRequest<?>) request).getRange().getEndTime();
  41                         return data.getTimestamp().compareTo(endTime, false) > 0;
  42                 }
  43                 return dataRequestCompleted;
  44         }
  45
  46         @Override
  47         protected synchronized void newCoalescedDataRequest(ITmfDataRequest<T> request) {
  48                 if (request instanceof ITmfEventRequest<?>) {
  49                         ITmfEventRequest<T> eventRequest = (ITmfEventRequest<T>) request;
  50                         TmfCoalescedEventRequest<T> coalescedRequest =
  51                                 new TmfCoalescedEventRequest<T>(fType, eventRequest.getRange(), eventRequest.getNbRequested(), eventRequest.getBlockize());
  52                         coalescedRequest.addRequest(eventRequest);
  53                         fPendingCoalescedRequests.add(coalescedRequest);
  54                 }
  55                 else {
  56                         super.newCoalescedDataRequest(request);
  57                 }
  58         }
  59
  60 }