org.eclipse.tracecompass.analysis.os.linux.core/src/org/eclipse/tracecompass/analysis/os/linux/core/kernelanalysis/ThreadPriorityAspect.java

   1 /*******************************************************************************
   2  * Copyright (c) 2015 Keba AG
   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  *   Christian Mansky - Initial implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis;
  14
  15 import org.eclipse.jdt.annotation.Nullable;
  16 import org.eclipse.tracecompass.common.core.NonNullUtils;
  17 import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
  18 import org.eclipse.tracecompass.tmf.core.event.aspect.ITmfEventAspect;
  19 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils;
  20
  21 /**
  22  * This aspect finds the priority of the thread running from this event using
  23  * the {@link KernelAnalysisModule}.
  24  *
  25  * @author Christian Mansky
  26  * @since 1.0
  27  */
  28 public final class ThreadPriorityAspect implements ITmfEventAspect {
  29
  30     /** The singleton instance */
  31     public static final ThreadPriorityAspect INSTANCE = new ThreadPriorityAspect();
  32
  33     private ThreadPriorityAspect() {
  34     }
  35
  36     @Override
  37     public final String getName() {
  38         return NonNullUtils.nullToEmptyString(Messages.AspectName_Prio);
  39     }
  40
  41     @Override
  42     public final String getHelpText() {
  43         return NonNullUtils.nullToEmptyString(Messages.AspectHelpText_Prio);
  44     }
  45
  46     @Override
  47     public @Nullable Integer resolve(ITmfEvent event) {
  48         KernelAnalysisModule kernelAnalysis = TmfTraceUtils.getAnalysisModuleOfClass(event.getTrace(), KernelAnalysisModule.class, KernelAnalysisModule.ID);
  49         if (kernelAnalysis == null) {
  50             return null;
  51         }
  52
  53         Integer tid = KernelTidAspect.INSTANCE.resolve(event);
  54         if (tid == null) {
  55             return null;
  56         }
  57
  58         Integer prio = KernelThreadInformationProvider.getThreadPrio(kernelAnalysis, tid, event.getTimestamp().getValue());
  59         return prio;
  60     }
  61
  62 }