analysis/org.eclipse.tracecompass.analysis.os.linux.core/src/org/eclipse/tracecompass/analysis/os/linux/core/inputoutput/InputOutputAnalysisModule.java

   1 /*******************************************************************************
   2  * Copyright (c) 2016 École Polytechnique de Montréal
   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
  10 package org.eclipse.tracecompass.analysis.os.linux.core.inputoutput;
  11
  12 import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
  13
  14 import java.util.HashSet;
  15 import java.util.Set;
  16
  17 import org.eclipse.tracecompass.analysis.os.linux.core.kernel.KernelAnalysisModule;
  18 import org.eclipse.tracecompass.analysis.os.linux.core.trace.DefaultEventLayout;
  19 import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout;
  20 import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelTrace;
  21 import org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.InputOutputStateProvider;
  22 import org.eclipse.tracecompass.tmf.core.analysis.IAnalysisModule;
  23 import org.eclipse.tracecompass.tmf.core.statesystem.ITmfStateProvider;
  24 import org.eclipse.tracecompass.tmf.core.statesystem.TmfStateSystemAnalysisModule;
  25 import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
  26 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils;
  27
  28 /**
  29  * State System Module for Input Output traces
  30  *
  31  * @author Houssem Daoud
  32  * @since 2.0
  33  */
  34 public class InputOutputAnalysisModule extends TmfStateSystemAnalysisModule {
  35
  36     /** The ID of this analysis module */
  37     public static final String ID = "org.eclipse.tracecompass.analysis.os.linux.inputoutput"; //$NON-NLS-1$
  38
  39     @Override
  40     protected ITmfStateProvider createStateProvider() {
  41         ITmfTrace trace = checkNotNull(getTrace());
  42         IKernelAnalysisEventLayout layout;
  43
  44         if (trace instanceof IKernelTrace) {
  45             layout = ((IKernelTrace) trace).getKernelEventLayout();
  46         } else {
  47             /* Fall-back to the base LttngEventLayout */
  48             layout = DefaultEventLayout.getInstance();
  49         }
  50
  51         return new InputOutputStateProvider(trace, layout);
  52     }
  53
  54     @Override
  55     protected StateSystemBackendType getBackendType() {
  56         return StateSystemBackendType.FULL;
  57     }
  58
  59     @Override
  60     protected Iterable<IAnalysisModule> getDependentAnalyses() {
  61         Set<IAnalysisModule> modules = new HashSet<>();
  62
  63         ITmfTrace trace = getTrace();
  64         if (trace == null) {
  65             throw new IllegalStateException();
  66         }
  67         /*
  68          * This analysis depends on the LTTng kernel analysis, so it's added to
  69          * dependent modules.
  70          */
  71         Iterable<KernelAnalysisModule> kernelModules = TmfTraceUtils.getAnalysisModulesOfClass(trace, KernelAnalysisModule.class);
  72         for (KernelAnalysisModule kernelModule : kernelModules) {
  73             /* Only add the first one we find, if there is one */
  74             modules.add(kernelModule);
  75             break;
  76         }
  77         return modules;
  78     }
  79
  80 }