Exemple #1
0
  private static Date initSDGcomputation(Config cfg) throws FileNotFoundException {
    if (cfg == null || !cfg.requiredFieldsSet()) {
      throw new IllegalArgumentException("Configuration is not valid: " + cfg);
    }

    File outputDir = new File(cfg.outputDir);
    if (!outputDir.exists()) {
      outputDir.mkdir();
    }

    Log.setLogFile(cfg.logFile);
    if (cfg.logLevel != null) {
      Log.setMinLogLevel(cfg.logLevel);
    }

    Date date = new Date();
    Log.info("Starting Analysis at " + date);

    boolean assertions = false;
    assert (assertions = true);
    Log.info("Assertions are turned " + (assertions ? "ON" : "OFF"));
    Log.info("Java Datamodel: " + System.getProperty("sun.arch.data.model") + "bit");
    Runtime run = Runtime.getRuntime();
    Log.info("Avaliable Processors: " + run.availableProcessors());
    Log.info("Free Memory: " + run.freeMemory());
    Log.info("Total Memory: " + run.totalMemory());
    Log.info("Maximum Memory: " + run.maxMemory());
    Log.info(Debug.getSettings());

    Log.info("SDGFactory.getSDG started with: \n" + cfg);

    return date;
  }
  private static void printDetails(CGNode method, ExplodedControlFlowGraph cfg, FlowGraph pruned) {
    int deletedEdges = 0;
    int originalEdges = 0;
    for (IExplodedBasicBlock node : cfg) {
      originalEdges += cfg.getSuccNodeCount(node);

      Iterator<IExplodedBasicBlock> it = cfg.getSuccNodes(node);

      int srcNum = node.getNumber();
      while (it.hasNext()) {
        IExplodedBasicBlock dst = it.next();
        int dstNum = dst.getNumber();
        if (pruned.hasEdge(srcNum, dstNum)) {
          deletedEdges++;
        }
      }
    }

    DecimalFormat df = new DecimalFormat("00.00");

    double percent = ((double) deletedEdges / (double) originalEdges) * 100.0;
    Log.info(
        "EXC: "
            + df.format(percent)
            + "% - edges: "
            + originalEdges
            + " deleted: "
            + deletedEdges
            + " - "
            + edu.kit.joana.deprecated.jsdg.util.Util.methodName(method.getMethod()));
  }
Exemple #3
0
  private static Result getOrigSDG(Config cfg, IProgressMonitor progress)
      throws IllegalArgumentException, CancelException, PDGFormatException, IOException,
          WalaException, InvalidClassFileException {
    progress.beginTask(Messages.getString("Analyzer.Task_Prepare_IR"), -1); // $NON-NLS-1$

    com.ibm.wala.ipa.callgraph.impl.Util.setNativeSpec(cfg.nativesXML);

    progress.subTask(Messages.getString("Analyzer.SubTask_Analysis_Scope")); // $NON-NLS-1$

    ClassLoader loader = cfg.getClass().getClassLoader();
    AnalysisScope scope = Util.makeAnalysisScope(cfg, loader);
    // AnalysisScopeReader.makeJavaBinaryAnalysisScope(cfg.scopeFile, cfg.classpath, null);
    progress.done();

    ClassHierarchy cha = ClassHierarchy.make(scope, progress);

    Iterable<Entrypoint> entrypoints =
        com.ibm.wala.ipa.callgraph.impl.Util.makeMainEntrypoints(scope, cha, cfg.mainClass);
    AnalysisOptions options = new AnalysisOptions(scope, entrypoints);
    AnalysisCache cache = new AnalysisCache();

    progress.subTask(
        Messages.getString("Analyzer.SubTask_Call_Graph_Builder") + cfg.pointsTo); // $NON-NLS-1$
    SSAPropagationCallGraphBuilder builder =
        SDGFactory.getCallGraphBuilder(cfg.pointsTo, options, cache, cha, scope);

    /**
     * Change the wala internal pointer and instancekeyfactory of the callgraph builder to our
     * adapter. So we can keep track of the created InstanceKeys and PointerKeys. This information
     * is used later on when creating subobject trees for accessed field variables.
     */
    InstanceAndPointerKeyFactoryAdapter adapter = null;
    InstanceKeyFactory ikFact = builder.getInstanceKeys();
    PointerKeyFactory pkFact = builder.getPointerKeyFactory();
    adapter = new InstanceAndPointerKeyFactoryAdapter(ikFact, pkFact);

    builder.setInstanceKeys(adapter);
    builder.setPointerKeyFactory(adapter);

    progress.done();

    progress.subTask(Messages.getString("Analyzer.SubTask_Call_Graph")); // $NON-NLS-1$
    CallGraph cg = builder.makeCallGraph(options, progress);

    if (cfg.optimizeCg >= 0) {
      CallGraphPruning opt = new CallGraphPruning(cg);
      System.out.println("Call Graph has " + cg.getNumberOfNodes() + " Nodes.");
      Set<CGNode> sopt = opt.findApplicationNodes(cfg.optimizeCg);
      cg = new PrunedCallGraph(cg, sopt);
      System.out.println("Optimized Call Graph has " + cg.getNumberOfNodes() + " Nodes.");
    }

    if (Debug.Var.DUMP_CALLGRAPH.isSet()) {
      Util.dumpCallGraph(cg, cfg.mainClass.replace('/', '.').substring(1), progress);
    }

    if (Debug.Var.DUMP_HEAP_GRAPH.isSet()) {
      PointerAnalysis pta = builder.getPointerAnalysis();
      HeapGraph hg = pta.getHeapGraph();
      Util.dumpHeapGraph(
          cfg.mainClass.replace('/', '.').substring(1) + "." + cfg.pointsTo, hg, null);
    }

    PointerAnalysis pta = builder.getPointerAnalysis();
    progress.done();

    DemandRefinementPointsTo demandPts = null;
    if (cfg.useDemandPts) {
      throw new UnsupportedOperationException();
      //		    MemoryAccessMap mam = new PABasedMemoryAccessMap(cg, builder.getPointerAnalysis());
      //			demandPts = new DemandRefinementPointsTo(cg,
      //				new ThisFilteringHeapModel(builder,cha), mam, cha, options, getStateMachineFactory());
    }

    IPointerAnalysis pts = new PointsToWrapper(demandPts, pta);

    progress.subTask(Messages.getString("Analyzer.SubTask_Search_Main")); // $NON-NLS-1$
    IMethod main =
        edu.kit.joana.deprecated.jsdg.util.Util.searchMethod(
            entrypoints, "main([Ljava/lang/String;)V"); // $NON-NLS-1$
    progress.done();

    progress.done();

    SDG sdg = SDG.create(main, cg, cache, adapter, pts, cfg, progress);
    sdg.setAnalysisScope(scope);
    sdg.setPointerAnalysis(pta);

    progress.done();

    if (Debug.Var.PRINT_FIELD_PTS_INFO.isSet()) {
      Log.info("search for field allocs called " + PDG.searchFieldAllocs + " times.");
    }

    if (Debug.Var.PRINT_UNRESOLVED_CLASSES.isSet()) {
      for (TypeReference tRef : cg.getClassHierarchy().getUnresolvedClasses()) {
        Log.warn("Could not resolve: " + Util.typeName(tRef.getName()));
      }
    }

    return new Result(null, sdg, cg, pta, null);
  }
Exemple #4
0
  public static final Result getJoanaSDG(Config cfg, final IProgressMonitor progress)
      throws IllegalArgumentException, CancelException, PDGFormatException, IOException,
          WalaException, InvalidClassFileException {
    final Date start = initSDGcomputation(cfg);

    final Result jresult = getOrigSDG(cfg, progress);

    edu.kit.joana.ifc.sdg.graph.SDG joanaSdg =
        JoanaStyleSDG.createJoanaSDG(
            jresult.jsdg, cfg.addControlFlow, cfg.nonTermination, cfg.useSummaryOpt, progress);

    if (progress.isCanceled()) {
      throw CancelException.make("Operation aborted.");
    }

    // as long as we can not cope with nodes that do not belong to the control flow we do this...
    JoanaCFGSanitizer.sanitizeCFG(joanaSdg);

    //        assert assertVerify(joanaSdg, !cfg.useWalaSdg, cfg.addControlFlow);

    final Date beforeThreadAllocation = new Date();

    final MHPAnalysis mhp;

    if (cfg.computeInterference) {
      progress.beginTask("Creating cSDG from SDG " + cfg.outputSDGfile, -1);

      progress.subTask("Running Thread Allocation Analysis");
      Log.info("Running Thread Allocation Analysis");

      mhp = CSDGPreprocessor.runMHP(joanaSdg, progress);

      Log.info("Thread Allocation done.");
      progress.done();
    } else {
      mhp = null;
    }

    if (progress.isCanceled()) {
      throw CancelException.make("Operation aborted.");
    }

    final Date beforeSummaryEdge = new Date();

    if (cfg.computeSummaryEdges) {
      progress.subTask("Compute Summary Edges");
      Log.info("Compute Summary Edges");
      SummaryEdgeComputation.compute(joanaSdg, progress);

      Log.info("Summary Edges done.");
      progress.done();
    }

    if (progress.isCanceled()) {
      throw CancelException.make("Operation aborted.");
    }

    final Date end = new Date();

    long start2end = end.getTime() - start.getTime();
    long summary2end = end.getTime() - beforeSummaryEdge.getTime();
    long start2thread = beforeThreadAllocation.getTime() - start.getTime();
    long threadAlloc = beforeSummaryEdge.getTime() - beforeThreadAllocation.getTime();

    Log.info("Start 2 End: " + start2end / 1000 + "s (" + start2end + "ms)");
    Log.info("Create: " + start2thread / 1000 + "s (" + start2thread + "ms)");
    Log.info(
        "Summary: "
            + summary2end / 1000
            + "s ("
            + summary2end
            + "ms)"
            + (cfg.computeSummaryEdges ? "" : " [deactivated]"));
    Log.info(
        "Thread: "
            + threadAlloc / 1000
            + "s ("
            + threadAlloc
            + "ms)"
            + (cfg.computeInterference ? "" : " [deactivated]"));

    return new Result(joanaSdg, jresult.jsdg, jresult.cg, jresult.pts, mhp);
  }