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