Exemple #1
0
  private void insertAfter(JPegStmt node, JPegStmt after) {
    // System.out.println("node: "+node);
    // System.out.println("after: "+after);
    //		System.out.println("succs of node: "+getSuccsOf(node));

    // this must be done first because the succs of node will be chanaged lately
    List succOfAfter = new ArrayList();
    succOfAfter.addAll(getSuccsOf(node));
    unitToSuccs.put(after, succOfAfter);

    Iterator succsIt = getSuccsOf(node).iterator();
    while (succsIt.hasNext()) {
      Object succ = succsIt.next();
      List pred = getPredsOf(succ);
      pred.remove(node);
      pred.add(after);
    }

    List succOfNode = new ArrayList();
    succOfNode.add(after);
    unitToSuccs.put(node, succOfNode);

    List predOfAfter = new ArrayList();
    predOfAfter.add(node);
    unitToPreds.put(after, predOfAfter);

    //	buildPredecessor(Chain pegChain);
  }
Exemple #2
0
  public String toString() {
    Iterator it = iterator();
    StringBuffer buf = new StringBuffer();
    while (it.hasNext()) {
      JPegStmt u = (JPegStmt) it.next();
      buf.append("u is: " + u + "\n");
      List l = new ArrayList();
      l.addAll(getPredsOf(u));
      buf.append("preds: " + l + "\n");
      // buf.append(u.toString() + '\n');
      l = new ArrayList();
      l.addAll(getSuccsOf(u));
      buf.append("succs: " + l + "\n");
    }

    return buf.toString();
  }
Exemple #3
0
  private void insertBefore(JPegStmt node, JPegStmt enter) {

    // build preds of before

    List predOfBefore = new ArrayList();
    predOfBefore.addAll(getPredsOf(node));
    unitToPreds.put(enter, predOfBefore);

    //	System.out.println("put into unitToPreds enter: "+enter);
    //	System.out.println("put into unitToPreds value: "+predOfBefore);
    Iterator predsIt = getPredsOf(node).iterator();

    // build succs of former preds of node
    while (predsIt.hasNext()) {
      Object pred = predsIt.next();

      List succ = getSuccsOf(pred);
      succ.remove(node);
      succ.add(enter);
      //	    System.out.println("in unitToPred pred: "+pred);
      //	    System.out.println("in unitToPred value is: "+succ);
    }

    List succOfBefore = new ArrayList();
    succOfBefore.add(node);
    unitToSuccs.put(enter, succOfBefore);
    //	System.out.println("put into unitToSuccs enter: "+enter);
    // System.out.println("put into unitToSuccs value: "+succOfBefore);

    List predOfNode = new ArrayList();
    predOfNode.add(enter);
    unitToPreds.put(node, predOfNode);
    // System.out.println("put into unitToPreds enter: "+node);
    // System.out.println("put into unitToPreds value: "+predOfNode);
    // buildPreds();

  }
  /**
   * This method pushes all newExpr down to be the stmt directly before every invoke of the init
   * only if they are in the types list
   */
  public void internalTransform(Body b, String phaseName, Map options) {
    JimpleBody body = (JimpleBody) b;

    if (Options.v().verbose())
      G.v().out.println("[" + body.getMethod().getName() + "] Folding Jimple constructors...");

    Chain units = body.getUnits();
    List<Unit> stmtList = new ArrayList<Unit>();
    stmtList.addAll(units);

    Iterator<Unit> it = stmtList.iterator();
    Iterator<Unit> nextStmtIt = stmtList.iterator();
    // start ahead one
    nextStmtIt.next();

    SmartLocalDefs localDefs = SmartLocalDefsPool.v().getSmartLocalDefsFor(body);
    UnitGraph graph = localDefs.getGraph();
    LocalUses localUses = new SimpleLocalUses(graph, localDefs);

    /* fold in NewExpr's with specialinvoke's */
    while (it.hasNext()) {
      Stmt s = (Stmt) it.next();

      if (!(s instanceof AssignStmt)) continue;

      /* this should be generalized to ArrayRefs */
      // only deal with stmts that are an local = newExpr
      Value lhs = ((AssignStmt) s).getLeftOp();
      if (!(lhs instanceof Local)) continue;

      Value rhs = ((AssignStmt) s).getRightOp();
      if (!(rhs instanceof NewExpr)) continue;

      // check if very next statement is invoke -->
      // this indicates there is no control flow between
      // new and invoke and should do nothing
      if (nextStmtIt.hasNext()) {
        Stmt next = (Stmt) nextStmtIt.next();
        if (next instanceof InvokeStmt) {
          InvokeStmt invoke = (InvokeStmt) next;

          if (invoke.getInvokeExpr() instanceof SpecialInvokeExpr) {
            SpecialInvokeExpr invokeExpr = (SpecialInvokeExpr) invoke.getInvokeExpr();
            if (invokeExpr.getBase() == lhs) {
              break;
            }
          }
        }
      }

      // check if new is in the types list - only process these
      if (!types.contains(((NewExpr) rhs).getType())) continue;

      List lu = localUses.getUsesOf(s);
      Iterator luIter = lu.iterator();
      boolean MadeNewInvokeExpr = false;

      while (luIter.hasNext()) {
        Unit use = ((UnitValueBoxPair) (luIter.next())).unit;
        if (!(use instanceof InvokeStmt)) continue;
        InvokeStmt is = (InvokeStmt) use;
        if (!(is.getInvokeExpr() instanceof SpecialInvokeExpr)
            || lhs != ((SpecialInvokeExpr) is.getInvokeExpr()).getBase()) continue;

        // make a new one here
        AssignStmt constructStmt =
            Jimple.v()
                .newAssignStmt(((DefinitionStmt) s).getLeftOp(), ((DefinitionStmt) s).getRightOp());
        constructStmt.setRightOp(Jimple.v().newNewExpr(((NewExpr) rhs).getBaseType()));
        MadeNewInvokeExpr = true;

        // redirect jumps
        use.redirectJumpsToThisTo(constructStmt);
        // insert new one here
        units.insertBefore(constructStmt, use);

        constructStmt.addTag(s.getTag("SourceLnPosTag"));
      }
      if (MadeNewInvokeExpr) {
        units.remove(s);
      }
    }
  }
Exemple #5
0
  protected void buildSuccsForInlining(JPegStmt stmt, Chain chain, PegGraph inlinee) {
    // System.out.println("entering buildSuccsForInlining...");
    Tag tag = (Tag) stmt.getTags().get(0);
    // System.out.println("stmt is: "+tag+" "+stmt);
    /*connect heads of inlinee with the preds of invokeStmt and
     * delete stmt from the succs list from the preds
     */

    Iterator predIt = getPredsOf(stmt).iterator();
    // System.out.println("preds list: "+getPredsOf(stmt));
    // System.out.println("preds size: "+getPredsOf(stmt).size());
    Iterator headsIt = inlinee.getHeads().iterator();
    {
      // System.out.println("heads: "+inlinee.getHeads());
      while (predIt.hasNext()) {
        JPegStmt pred = (JPegStmt) predIt.next();
        // System.out.println("pred: "+pred);
        List succList = (List) getSuccsOf(pred);
        // System.out.println("succList of pred: "+succList);
        int pos = succList.indexOf(stmt);
        // System.out.println("remove : "+stmt + " from succList: \n"+succList+ "\n of pred" );
        // remove invokeStmt
        succList.remove(pos);

        while (headsIt.hasNext()) {
          succList.add(headsIt.next());
        }
        unitToSuccs.put(pred, succList);
      }

      {
        while (headsIt.hasNext()) {
          Object head = headsIt.next();
          List predsOfHeads = new ArrayList();
          predsOfHeads.addAll(getPredsOf(head));
          unitToPreds.put(head, predsOfHeads);
        }
      }
      /*
      {
      predIt = getPredsOf(stmt).iterator();
      while (predIt.hasNext()){
      JPegStmt s = (JPegStmt)predIt.next();
      if (unitToSuccs.containsKey(s)){
      Iterator succIt = ((List) unitToSuccs.get(s)).iterator();
      while(succIt.hasNext()){

      //Object successor =  succIt.next();
       JPegStmt successor = (JPegStmt)succIt.next();
       List predList = (List) unitToPreds.get(successor);
       if (predList != null) {
       try {
       predList.add(s);

       } catch(NullPointerException e) {
       System.out.println(s + "successor: " + successor);
       throw e;
       }
       }
       }
       }
       }




       }*/

    }

    /*connect tails of inlinee with the succ of invokeStmt and
     * delete stmt from the
     */

    Iterator tailsIt = inlinee.getTails().iterator();
    {
      // System.out.println("tails: "+inlinee.getTails());
      while (tailsIt.hasNext()) {
        Iterator succIt = getSuccsOf(stmt).iterator();
        JPegStmt tail = (JPegStmt) tailsIt.next();
        List succList = null;
        if (unitToSuccs.containsKey(tail)) {
          // System.out.println("error: unitToSucc containsKey: "+tail);
          succList = (List) getSuccsOf(tail);
          // System.out.println("succList: "+succList);
        } else {

          succList = new ArrayList();
        }
        while (succIt.hasNext()) {
          JPegStmt succ = (JPegStmt) succIt.next();
          succList.add(succ);
          // System.out.println("succ: "+succ);
          // remove stmt from the preds list of the succs of itself.
          List predListOfSucc = getPredsOf(succ);
          if (predListOfSucc == null) {
            System.err.println("Error: predListOfSucc is null!");
            System.exit(1);
          } else {
            if (predListOfSucc.size() != 0) {

              int pos = predListOfSucc.indexOf(stmt);
              if (pos > 0 || pos == 0) {

                //	System.out.println("remove stmt: "+stmt+" from the preds list"+predListOfSucc+"
                // of the succ");
                predListOfSucc.remove(pos);
              }

              //		System.out.println("remove(from PRED): ");
            }
          }
          unitToPreds.put(succ, predListOfSucc);
        }
        unitToSuccs.put(tail, succList);
        // System.out.println("put: "+tail);
        // System.out.println("succList: "+succList+ "into unitToSucc");

      }
    }

    // add Nov 1
    {
      tailsIt = inlinee.getTails().iterator();
      while (tailsIt.hasNext()) {
        JPegStmt s = (JPegStmt) tailsIt.next();
        if (unitToSuccs.containsKey(s)) {
          Iterator succIt = unitToSuccs.get(s).iterator();
          while (succIt.hasNext()) {

            // Object successor =  succIt.next();
            JPegStmt successor = (JPegStmt) succIt.next();
            List<JPegStmt> predList = unitToPreds.get(successor);
            if (predList != null && !predList.contains(s)) {
              try {
                predList.add(s);
                /*
                Tag tag = (Tag)successor.getTags().get(0);
                System.out.println("add "+s+" to predlist of "+tag+" "+successor);
                */
              } catch (NullPointerException e) {
                System.out.println(s + "successor: " + successor);
                throw e;
              }
            }
          }
        }
      }
    }
    // end add Nov 1

    // System.out.println("stmt: "+stmt);
    // remove stmt from allNodes and mainPegChain
    // System.out.println("mainPegChain contains stmt: "+mainPegChain.contains(stmt));
    //		testPegChain();

    if (!allNodes.contains(stmt)) {
      System.err.println("fail to find begin node in  allNodes!");
      System.exit(1);
    } else {
      allNodes.remove(stmt);
      // System.out.println("remove from allNode: "+stmt);
    }

    if (!chain.contains(stmt)) {
      System.err.println("Error! Chain does not contains stmt (extending point)!");
      System.exit(1);

    } else {
      if (!chain.remove(stmt)) {
        System.err.println("fail to remove invoke stmt in from Chain!");
        System.exit(1);
      }
    }
    /*
    if (!mainPegChain.contains(stmt)){
    boolean find = false;
    //System.out.println("main chain does not contain AFTER");
     Set maps = startToThread.entrySet();
     for(Iterator iter=maps.iterator(); iter.hasNext();){
     Map.Entry entry = (Map.Entry)iter.next();
     Object startNode = entry.getKey();
     Iterator runIt  = ((List)entry.getValue()).iterator();
     while (runIt.hasNext()){
     Chain chain=(Chain)runIt.next();
     if (chain.contains(stmt)) {
     find = true;
     if (!chain.remove(stmt)){
     System.err.println("fail to remove begin node in from mainPegChain!");
     System.exit(1);
     }
     break;
     }
     }
     if (find == false){
     System.err.println("fail to find stmt: "+stmt+" in chains!");
     System.exit(1);
     }
     }
     //this.toString();
      }
      else{
      if (!mainPegChain.remove(stmt)) {
      System.err.println("fail to remove begin node in from mainPegChain!");
      System.exit(1);
      }
      else{
      // System.out.println("remove(from mainchain): "+stmt);
       }
       }
       */
    // remove stmt from unitToSuccs and unitToPreds
    if (unitToSuccs.containsKey(stmt)) {
      unitToSuccs.remove(stmt);
    }
    if (unitToPreds.containsKey(stmt)) {
      unitToPreds.remove(stmt);
    }
  }