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.TmfStateStatistics.Attributes;
  22 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  23
  24 /**
  25  * The state provider for traces statistics that use TmfStateStatistics. It
  26  * should work with any trace type for which we can use the state system.
  27  *
  28  * The resulting attribute tree will look like this:
  29  *
  30  * <root>
  31  *   |-- total
  32  *   \-- event_types
  33  *        |-- <event name 1>
  34  *        |-- <event name 2>
  35  *        |-- <event name 3>
  36  *       ...
  37  *
  38  * And each <event name>'s value will be an integer, representing how many times
  39  * this particular event type has been seen in the trace so far.
  40  *
  41  * @author Alexandre Montplaisir
  42  * @version 1.0
  43  */
  44 class StatsStateProvider extends AbstractStateChangeInput {
  45
  46     /* Commonly-used attributes */
  47     private int typeAttribute = -1;
  48
  49     /**
  50      * Constructor
  51     *
  52      * @param trace
  53      *            The trace for which we build this state system
  54      */
  55     public StatsStateProvider(ITmfTrace trace) {
  56         super(trace, ITmfEvent.class ,"TMF Statistics"); //$NON-NLS-1$
  57     }
  58
  59     @Override
  60     public void assignTargetStateSystem(ITmfStateSystemBuilder ssb) {
  61         super.assignTargetStateSystem(ssb);
  62
  63         /* Setup common locations */
  64         typeAttribute = ss.getQuarkAbsoluteAndAdd(Attributes.EVENT_TYPES);
  65     }
  66
  67     @Override
  68     protected void eventHandle(ITmfEvent event) {
  69         int quark;
  70
  71         /* Since this can be used for any trace types, normalize all the
  72          * timestamp values to nanoseconds. */
  73         final long ts = event.getTimestamp().normalize(0, -9).getValue();
  74
  75         final String eventName = event.getType().getName();
  76
  77         try {
  78
  79             /* Total number of events */
  80             quark = ss.getQuarkAbsoluteAndAdd(Attributes.TOTAL);
  81             ss.incrementAttribute(ts, quark);
  82
  83             /* Number of events of each type, globally */
  84             quark = ss.getQuarkRelativeAndAdd(typeAttribute, eventName);
  85             ss.incrementAttribute(ts, quark);
  86
  87 //            /* Number of events per CPU */
  88 //            quark = ss.getQuarkRelativeAndAdd(currentCPUNode, Attributes.STATISTICS, Attributes.EVENT_TYPES, eventName);
  89 //            ss.incrementAttribute(ts, quark);
  90 //
  91 //            /* Number of events per process */
  92 //            quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.STATISTICS, Attributes.EVENT_TYPES, eventName);
  93 //            ss.incrementAttribute(ts, quark);
  94
  95         } catch (StateValueTypeException e) {
  96             e.printStackTrace();
  97         } catch (TimeRangeException e) {
  98             e.printStackTrace();
  99         } catch (AttributeNotFoundException e) {
 100             e.printStackTrace();
 101         }
 102     }
 103 }