Exemplo n.º 1
0
  /** Creates a <tt>BloatContext</tt> that loads classes from a given CLASSPATH. */
  static BloatContext makeContext(final String classpath, final String outputDirName) {
    final ClassFileLoader loader = new ClassFileLoader();
    if (classpath != null) {
      loader.prependClassPath(classpath);
    }

    // if(TRACE) {
    // loader.setVerbose(true);
    // }

    BloatBenchmark.tr("  Creating a BloatContext for CLASSPATH: " + loader.getClassPath());

    if (outputDirName != null) {
      loader.setOutputDir(new File(outputDirName));
    }
    final BloatContext context = new CachingBloatContext(loader, BloatBenchmark.CLASSES, true);

    // Always ignore the sun packages and the opj stuff for
    // interprocedural stuff
    if (!BloatBenchmark.SUN) {
      context.addIgnorePackage("sun");
    }

    context.addIgnorePackage("java.lang.ref");
    context.addIgnorePackage("org.opj.system");

    if (BloatBenchmark.USE1_1) {
      // Toba can't deal with java.lang.Character
      context.addIgnoreClass(Type.getType("Ljava/lang/Character;"));
    }

    return (context);
  }
Exemplo n.º 2
0
  /**
   * Parses the command line. The user must specify at least one class to optimize and the directory
   * in which to place the optimized class files. The methods of the specified classes are then
   * optimized according to the command line options.
   *
   * @see ClassEditor
   * @see ClassFileLoader
   * @see ClassFile
   * @see MethodEditor
   * @see MethodInfo
   * @see CompactArrayInitializer
   * @see FlowGraph
   */
  public static void main(final String[] args) {
    try {
      Main.loader = new ClassFileLoader();

      List classes = new ArrayList(args.length); // The classes to
      // optimize
      boolean gotdir = false; // Has an output directory been specified?

      Main.ARGS = args;

      for (int i = 0; i < args.length; i++) {
        if (args[i].equals("-v") || args[i].equals("-verbose")) {
          Main.VERBOSE = true;
          Main.loader.setVerbose(true);

        } else if (args[i].equals("-debug")) {
          Main.DEBUG = true;
          Main.loader.setVerbose(true);
          ClassFileLoader.DEBUG = true;
          CompactArrayInitializer.DEBUG = true;
          ClassEditor.DEBUG = true;
          FlowGraph.DEBUG = true;
          DominatorTree.DEBUG = true;
          Tree.DEBUG = true;
          CodeGenerator.DEBUG = true;
          Liveness.DEBUG = true;
          SSA.DEBUG = true;
          SSAGraph.DEBUG = true;
          PersistentCheckElimination.DEBUG = true;
          ValueNumbering.DEBUG = true;
          ValueFolding.DEBUG = true;
          ClassHierarchy.DEBUG = true;
          TypeInference.DEBUG = true;
          SSAPRE.DEBUG = true;
          StackPRE.DEBUG = true;
          ExprPropagation.DEBUG = true;
          DeadCodeElimination.DEBUG = true;
          CodeGenerator.DB_OPT_STACK = true;

        } else if (args[i].equals("-trace")) {
          Main.TRACE = true;

        } else if (args[i].equals("-db")) {

          if (++i >= args.length) {
            System.err.println("** No debugging option specified");
            Main.usage();
          }

          if (args[i].equals("bc")) {
            CodeArray.DEBUG = true;

          } else if (args[i].equals("cfg")) {
            FlowGraph.DEBUG = true;

          } else if (args[i].equals("ssa")) {
            SSA.DEBUG = true;
            SSAGraph.DEBUG = true;

          } else if (args[i].equals("graphs")) {
            FlowGraph.DB_GRAPHS = true;

          } else if (args[i].startsWith("-")) {
            i--;

          } else {
            System.err.println("** Unknown debugging option: " + args[i]);
            Main.usage();
          }

        } else if (args[i].equals("-debugvf")) {
          ValueFolding.DUMP = true;

        } else if (args[i].equals("-debugbc")) {
          BloatContext.DEBUG = true;

        } else if (args[i].equals("-help")) {
          Main.usage();

        } else if (args[i].equals("-noanno")) {
          Main.ANNO = false;

        } else if (args[i].equals("-anno")) {
          Main.ANNO = true;

        } else if (args[i].equals("-print-flow-graph")) {
          FlowGraph.PRINT_GRAPH = true;

        } else if (args[i].equals("-preserve-debug")) {
          MethodEditor.PRESERVE_DEBUG = true;

        } else if (args[i].equals("-nouse-stack-vars")) {
          Tree.USE_STACK = false;

        } else if (args[i].equals("-use-stack-vars")) {
          Tree.USE_STACK = true;

        } else if (args[i].equals("-unique-handlers")) {
          MethodEditor.UNIQUE_HANDLERS = true;

        } else if (args[i].equals("-nocompact-array-init")) {
          Main.COMPACT_ARRAY_INIT = false;

        } else if (args[i].equals("-compact-array-init")) {
          Main.COMPACT_ARRAY_INIT = true;

        } else if (args[i].equals("-nostack-alloc")) {
          Main.STACK_ALLOC = false;

        } else if (args[i].equals("-stack-alloc")) {
          Main.STACK_ALLOC = true;

        } else if (args[i].equals("-no-verify")) {
          Main.VERIFY = false;

        } else if (args[i].equals("-peel-loops")) {
          if (++i >= args.length) {
            Main.usage();
          }

          final String n = args[i];

          if (n.equals("all")) {
            FlowGraph.PEEL_LOOPS_LEVEL = FlowGraph.PEEL_ALL_LOOPS;

          } else {
            try {
              FlowGraph.PEEL_LOOPS_LEVEL = Integer.parseInt(n);

              if (FlowGraph.PEEL_LOOPS_LEVEL < 0) {
                Main.usage();
              }
            } catch (final NumberFormatException ex) {
              Main.usage();
            }
          }

        } else if (args[i].equals("-color")) {
          Liveness.UNIQUE = false;

        } else if (args[i].equals("-nocolor")) {
          Liveness.UNIQUE = true;

        } else if (args[i].equals("-only-method")) {
          if (++i >= args.length) {
            Main.usage();
          }

          Main.METHOD = args[i];

        } else if (args[i].equals("-classpath")) {
          if (++i >= args.length) {
            Main.usage();
          }

          final String classpath = args[i];
          Main.loader.setClassPath(classpath);

        } else if (args[i].equals("-classpath/p")) {
          if (++i >= args.length) {
            Main.usage();
          }

          final String classpath = args[i];
          Main.loader.prependClassPath(classpath);

        } else if (args[i].equals("-skip")) {
          if (++i >= args.length) {
            Main.usage();
          }

          String pkg = args[i];

          // Account for class file name on command line
          if (pkg.endsWith(".class")) {
            pkg = pkg.substring(0, pkg.lastIndexOf('.'));
          }

          Main.SKIP.add(pkg.replace('.', '/'));

        } else if (args[i].equals("-only")) {
          if (++i >= args.length) {
            Main.usage();
          }

          String pkg = args[i];

          // Account for class file name on command line
          if (pkg.endsWith(".class")) {
            pkg = pkg.substring(0, pkg.lastIndexOf('.'));
          }

          Main.ONLY.add(pkg.replace('.', '/'));

        } else if (args[i].equals("-nodce")) {
          Main.DCE = false;

        } else if (args[i].equals("-noprop")) {
          Main.PROP = false;

        } else if (args[i].equals("-noappre")) {
          SSAPRE.NO_ACCESS_PATHS = true;

        } else if (args[i].equals("-nopre")) {
          Main.PRE = false;

        } else if (args[i].equals("-dce")) {
          Main.DCE = true;

        } else if (args[i].equals("-prop")) {
          Main.PROP = true;

        } else if (args[i].equals("-appre")) {
          SSAPRE.NO_ACCESS_PATHS = false;

        } else if (args[i].equals("-pre")) {
          Main.PRE = true;

        } else if (args[i].equals("-closure")) {
          Main.CLOSURE = true;

        } else if (args[i].equals("-opt-stack-1")) {
          Main.OPT_STACK_1 = true;
          CodeGenerator.OPT_STACK = true;

        } else if (args[i].equals("-opt-stack-2")) {
          Main.OPT_STACK_2 = true;
          MethodEditor.OPT_STACK_2 = true;

        } else if (args[i].equals("-diva")) {
          Main.DIVA = true;

        } else if (args[i].equals("-no-thread")) {
          SSAPRE.NO_THREAD = true;

        } else if (args[i].equals("-no-precise")) {
          SSAPRE.NO_PRECISE = true;

        } else if (args[i].equals("-relax-loading")) {
          ClassHierarchy.RELAX = true;

        } else if (args[i].equals("-f") || args[i].equals("-force")) {
          Main.FORCE = true;

        } else if (args[i].startsWith("-")) {
          System.err.println("No such option: " + args[i]);
          Main.usage();

        } else if (i == args.length - 1) {
          // Last argument is the name of the output directory

          final File f = new File(args[i]);

          if (f.exists() && !f.isDirectory()) {
            System.err.println("No such directory: " + f.getPath());
            System.exit(2);
          }

          if (!f.exists()) {
            f.mkdirs();
          }

          if (!f.exists()) {
            System.err.println("Couldn't create directory: " + f.getPath());
            System.exit(2);
          }

          // Tell class loader to put optimized classes in f directory
          Main.loader.setOutputDir(f);
          gotdir = true;
        } else {
          // The argument must be a class name...
          classes.add(args[i]);
        }
      }

      if (!gotdir) {
        System.err.println("No output directory specified");
        Main.usage();
      }

      if (classes.size() == 0) {
        System.err.println("** No classes specified");
        Main.usage();
      }

      // Use the CachingBloatingContext
      Main.context = new CachingBloatContext(Main.loader, classes, Main.CLOSURE);

      boolean errors = false;

      final Iterator iter = classes.iterator();

      // Now that we've parsed the command line, load the classes into the
      // class loader
      while (iter.hasNext()) {
        final String name = (String) iter.next();

        try {
          Main.context.loadClass(name);

        } catch (final ClassNotFoundException ex) {
          System.err.println("Couldn't find class: " + ex.getMessage());

          errors = true;
        }
      }

      if (errors) {
        System.exit(1);
      }

      if (!Main.CLOSURE) {
        final Iterator e = classes.iterator();

        // Edit only the classes that were specified on the command line

        while (e.hasNext()) {
          final String name = (String) e.next();
          Main.editClass(name);
        }
      } else {
        // Edit all the classes in the class file editor and their
        // superclasses

        classes = null;

        if (Main.TRACE) {
          System.out.println("Computing closure " + Main.dateFormat.format(new Date()));
        }

        final Iterator e = Main.context.getHierarchy().classes().iterator();

        while (e.hasNext()) {
          final Type t = (Type) e.next();

          if (t.isObject()) {
            Main.editClass(t.className());
          }
        }
      }
    } catch (final ExceptionInInitializerError ex) {
      ex.printStackTrace();
      System.out.println(ex.getException());
    }
  }