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(String name, Class<T> type) {
  29                 super(name, type);
  30         }
  31
  32         public TmfEventProvider(String name, Class<T> type, int queueSize) {
  33                 super(name, type, queueSize);
  34         }
  35
  36         public TmfEventProvider(TmfEventProvider<T> oldProvider) {
  37                 super(oldProvider);
  38         }
  39
  40         @Override
  41         public boolean isCompleted(ITmfDataRequest<T> request, T data, int nbRead) {
  42                 boolean dataRequestCompleted = super.isCompleted(request, data, nbRead);
  43                 if (!dataRequestCompleted && request instanceof ITmfEventRequest<?> && !data.isNullRef()) {
  44                         TmfTimestamp endTime = ((ITmfEventRequest<?>) request).getRange().getEndTime();
  45                         return data.getTimestamp().compareTo(endTime, false) > 0;
  46                 }
  47                 return dataRequestCompleted;
  48         }
  49
  50         @Override
  51         protected synchronized void newCoalescedDataRequest(ITmfDataRequest<T> request) {
  52                 if (request instanceof ITmfEventRequest<?>) {
  53                         ITmfEventRequest<T> eventRequest = (ITmfEventRequest<T>) request;
  54                         TmfCoalescedEventRequest<T> coalescedRequest =
  55                                 new TmfCoalescedEventRequest<T>(fType, eventRequest.getRange(), eventRequest.getNbRequested(), eventRequest.getBlockize(), eventRequest.getExecType());
  56                         coalescedRequest.addRequest(eventRequest);
  57                         fPendingCoalescedRequests.add(coalescedRequest);
  58                 }
  59                 else {
  60                         super.newCoalescedDataRequest(request);
  61                 }
  62         }
  63
  64 }