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.Tracer;
  16 import org.eclipse.linuxtools.tmf.event.TmfEvent;
  17 import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
  18 import org.eclipse.linuxtools.tmf.request.ITmfDataRequest;
  19 import org.eclipse.linuxtools.tmf.request.ITmfEventRequest;
  20 import org.eclipse.linuxtools.tmf.request.TmfCoalescedEventRequest;
  21
  22 /**
  23  * <b><u>TmfEventProvider</u></b>
  24  * <p>
  25  * Implement me. Please.
  26  */
  27 public abstract class TmfEventProvider<T extends TmfEvent> extends TmfDataProvider<T> {
  28
  29         public TmfEventProvider(String name, Class<T> type) {
  30                 super(name, type);
  31         }
  32
  33         public TmfEventProvider(String name, Class<T> type, int queueSize) {
  34                 super(name, type, queueSize);
  35         }
  36
  37         public TmfEventProvider(TmfEventProvider<T> oldProvider) {
  38                 super(oldProvider);
  39         }
  40
  41         @Override
  42         public boolean isCompleted(ITmfDataRequest<T> request, T data, int nbRead) {
  43                 boolean requestCompleted = super.isCompleted(request, data, nbRead);
  44                 if (!requestCompleted && request instanceof ITmfEventRequest<?> && !data.isNullRef()) {
  45                         TmfTimestamp endTime = ((ITmfEventRequest<?>) request).getRange().getEndTime();
  46                         return data.getTimestamp().compareTo(endTime, false) > 0;
  47                 }
  48                 return requestCompleted;
  49         }
  50
  51         @Override
  52         protected synchronized void newCoalescedDataRequest(ITmfDataRequest<T> request) {
  53                 if (request instanceof ITmfEventRequest<?>) {
  54                         ITmfEventRequest<T> eventRequest = (ITmfEventRequest<T>) request;
  55                         TmfCoalescedEventRequest<T> coalescedRequest =
  56                                 new TmfCoalescedEventRequest<T>(fType, eventRequest.getRange(), eventRequest.getNbRequested(), eventRequest.getExecType());
  57                         coalescedRequest.addRequest(eventRequest);
  58                 if (Tracer.isRequestTraced()) {
  59                         Tracer.traceRequest(request, "coalesced with " + coalescedRequest.getRequestId()); //$NON-NLS-1$
  60                         Tracer.traceRequest(coalescedRequest, "added " + request.getRequestId()); //$NON-NLS-1$
  61                 }
  62                         fPendingCoalescedRequests.add(coalescedRequest);
  63                 }
  64                 else {
  65                         super.newCoalescedDataRequest(request);
  66                 }
  67         }
  68
  69 }