org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/HistogramRequest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2011 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  *   William Bourque - Initial API and implementation
  11  *   Yuriy Vashchuk - Heritage correction.
  12  *   Francois Chouinard - Cleanup and refactoring
  13  *******************************************************************************/
  14
  15 package org.eclipse.linuxtools.lttng.ui.views.histogram;
  16
  17 import org.eclipse.linuxtools.lttng.core.LttngConstants;
  18 import org.eclipse.linuxtools.lttng.core.event.LttngEvent;
  19 import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
  20 import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest;
  21 import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest;
  22
  23 /**
  24  * <b><u>HistogramRequest</u></b>
  25  * <p>
  26  */
  27 public class HistogramRequest extends TmfEventRequest<LttngEvent> {
  28
  29     // ------------------------------------------------------------------------
  30     // Attributes
  31     // ------------------------------------------------------------------------
  32
  33     private final Histogram fHistogram;
  34
  35     // ------------------------------------------------------------------------
  36     // Constructor
  37     // ------------------------------------------------------------------------
  38
  39     public HistogramRequest(Histogram histogram, TmfTimeRange range, int rank, int nbEvents, ITmfDataRequest.ExecutionType execType) {
  40         super(LttngEvent.class, range, rank, nbEvents, LttngConstants.DEFAULT_BLOCK_SIZE, execType);
  41         fHistogram = histogram;
  42     }
  43
  44     public HistogramRequest(Histogram histogram, TmfTimeRange range, ITmfDataRequest.ExecutionType execType) {
  45         this(histogram, range, 0, ALL_DATA, execType);
  46     }
  47
  48     public HistogramRequest(Histogram histogram, TmfTimeRange range, int rank, ITmfDataRequest.ExecutionType execType) {
  49         this(histogram, range, rank, ALL_DATA, execType);
  50     }
  51
  52     // ------------------------------------------------------------------------
  53     // TmfEventRequest
  54     // ------------------------------------------------------------------------
  55
  56     @Override
  57     public void handleData(LttngEvent event) {
  58         super.handleData(event);
  59         if (event != null) {
  60             long timestamp = event.getTimestamp().getValue();
  61             fHistogram.countEvent(timestamp);
  62         }
  63     }
  64
  65     @Override
  66     public void handleCompleted() {
  67         fHistogram.refresh();
  68         super.handleCompleted();
  69     }
  70
  71     @Override
  72     public void handleCancel() {
  73         fHistogram.refresh();
  74         super.handleCancel();
  75     }
  76
  77 }