org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/tmf/core/statistics/StatsStateProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 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  *   Alexandre Montplaisir - Initial API and implementation
  11  ******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.core.statistics;
  14
  15 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  16 import org.eclipse.linuxtools.tmf.core.exceptions.AttributeNotFoundException;
  17 import org.eclipse.linuxtools.tmf.core.exceptions.StateValueTypeException;
  18 import org.eclipse.linuxtools.tmf.core.exceptions.TimeRangeException;
  19 import org.eclipse.linuxtools.tmf.core.statesystem.AbstractStateChangeInput;
  20 import org.eclipse.linuxtools.tmf.core.statesystem.ITmfStateSystemBuilder;
  21 import org.eclipse.linuxtools.tmf.core.statistics.TmfStatistics.Attributes;
  22 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  23
  24 /**
  25  * The state provider for traces statistics. It should work with any type of
  26  * trace TMF can handle.
  27  *
  28  * The resulting attribute tree will look like this:
  29  *
  30  * <root>
  31  *   \-- event_types
  32  *        |-- <event name 1>
  33  *        |-- <event name 2>
  34  *        |-- <event name 3>
  35  *       ...
  36  *
  37  * And each <event name>'s value will be an integer, representing how many times
  38  * this particular event type has been seen in the trace so far.
  39  *
  40  * @author Alexandre Montplaisir
  41  * @version 1.0
  42  */
  43 class StatsStateProvider extends AbstractStateChangeInput {
  44
  45     /* Commonly-used attributes */
  46     private int typeAttribute = -1;
  47
  48     /**
  49      * Constructor
  50     *
  51      * @param trace
  52      *            The trace for which we build this state system
  53      */
  54     public StatsStateProvider(ITmfTrace trace) {
  55         super(trace, ITmfEvent.class ,"TMF Statistics"); //$NON-NLS-1$
  56     }
  57
  58     @Override
  59     public void assignTargetStateSystem(ITmfStateSystemBuilder ssb) {
  60         super.assignTargetStateSystem(ssb);
  61
  62         /* Setup common locations */
  63         typeAttribute = ss.getQuarkAbsoluteAndAdd(Attributes.EVENT_TYPES);
  64     }
  65
  66     @Override
  67     protected void eventHandle(ITmfEvent event) {
  68         int quark;
  69
  70         final long ts = event.getTimestamp().getValue();
  71         final String eventName = event.getType().getName();
  72
  73         try {
  74
  75             /* Number of events of each type, globally */
  76             quark = ss.getQuarkRelativeAndAdd(typeAttribute, eventName);
  77             ss.incrementAttribute(ts, quark);
  78
  79 //            /* Number of events per CPU */
  80 //            quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.STATISTICS, Attributes.EVENT_TYPES, eventName);
  81 //            ss.incrementAttribute(ts, quark);
  82 //
  83 //            /* Number of events per process */
  84 //            quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATISTICS, Attributes.EVENT_TYPES, eventName);
  85 //            ss.incrementAttribute(ts, quark);
  86
  87         } catch (StateValueTypeException e) {
  88             e.printStackTrace();
  89         } catch (TimeRangeException e) {
  90             e.printStackTrace();
  91         } catch (AttributeNotFoundException e) {
  92             e.printStackTrace();
  93         }
  94     }
  95 }