org.eclipse.linuxtools.lttng.headless/src/JniTraceTest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 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 (wbourque@gmail.com) - Initial API and implementation
  11  *******************************************************************************/
  12
  13 import java.util.ArrayList;
  14 import org.eclipse.linuxtools.lttng.jni.JniEvent;
  15 import org.eclipse.linuxtools.lttng.jni.JniMarkerField;
  16 import org.eclipse.linuxtools.lttng.jni.JniTrace;
  17 import org.eclipse.linuxtools.lttng.jni.common.JniTime;
  18 import org.eclipse.linuxtools.lttng.jni.factory.JniTraceFactory;
  19
  20
  21 @SuppressWarnings("nls")
  22 public class JniTraceTest {
  23
  24     public static void main(String[] args) {
  25
  26         // Path of the trace
  27         final String TRACE_PATH = "/home/william/trace-614601events-nolost-newformat";
  28
  29         // *** Change this to run several time over the same trace
  30         final int NB_OF_PASS = 1;
  31
  32         // *** Change this to true to parse all the events in the trace
  33         //      Otherwise, events are just read
  34         final boolean PARSE_EVENTS = true;
  35
  36
  37         // Work variables
  38         JniTrace tmptrace = null;
  39         JniEvent tmpevent = null;
  40         Long nbEvent = 0L;
  41
  42         try {
  43                 // Get the trace from the Factory...
  44                 //      This assume the path is correct and that the correct version of the lib is installed
  45             tmptrace = JniTraceFactory.getJniTrace(TRACE_PATH, false);
  46
  47             // Seek beginning
  48             tmptrace.seekToTime(new JniTime(0L));
  49
  50             // Run up to "NB_OF_PASS" on the same trace
  51             for (int x=0; x<NB_OF_PASS; x++ ){
  52                 tmpevent = tmptrace.readNextEvent();
  53                 nbEvent++;
  54
  55                 while ( tmpevent != null ) {
  56
  57                         // Parse event if asked
  58                         if ( PARSE_EVENTS ) {
  59                                 ArrayList<JniMarkerField> tmpFields = tmpevent.getMarkersMap().get(tmpevent.getEventMarkerId()).getMarkerFieldsArrayList();
  60                                 for ( int pos=0; pos<tmpFields.size(); pos++ ) {
  61                                     @SuppressWarnings("unused")
  62                                                         Object newValue = tmpevent.parseFieldById(pos);
  63
  64                                     // *** Uncomment the following to print the parsed content
  65                                     // Warning : this is VERY intensive
  66                                     //if ( pos == (tmpFields.size() -1) ) {
  67                                     //  tmptrace.printC(tmpevent.getEventPtr().getLibraryId(), tmpFields.get(pos).getField() + ":" + newValue + " ");
  68                                     //} else {
  69                                     //  tmptrace.printlnC(tmpevent.getEventPtr().getLibraryId(), tmpFields.get(pos).getField() + ":" + newValue + " ");
  70                                     //}
  71                                 }
  72                         }
  73
  74                         tmpevent = tmptrace.readNextEvent();
  75                         nbEvent++;
  76                     }
  77             }
  78
  79             System.out.println("NB Events read : " + nbEvent);
  80         }
  81         catch (Exception e) {
  82             e.printStackTrace();
  83         }
  84     }
  85
  86 }