performance-tuning-$8.lzx

<canvas height="200" width="100%">
    <include href="utils/performance"/>
    <script>
      var iterations = Measurement.defaultIterations;
      var x;

      function empty () {
        for (var i = 0; i < iterations; i++) 
          ;
      }

      function measureAssignment () {
        for (var i = 0; i < iterations; i++) 
          x = 0;
      }

      function eff () {
        return 0;
      }
      function measureFunctionCall () {
        for (var i = 0; i < iterations; i++) 
          eff();
      }

      function gee (a) {
        return 0;
      }
      function measureFunctionCallWithOneParameter () {
        for (var i = 0; i < iterations; i++) 
          gee(1);
      }

      function ache (a, b) {
        return 0;
      }
      function measureFunctionCallWithTwoParameters () {
        for (var i = 0; i < iterations; i++) 
          ache(1, 2);
      }

      function eye (a, b, c) {
        return 0;
      }
      function measureFunctionCallWithThreeParameters () {
        for (var i = 0; i < iterations; i++) 
          eye(1,2,3);
      }

      function jay (a, b, c, d) {
        return 0;
      }
      function measureFunctionCallWithFourParameters () {
        for (var i = 0; i < iterations; i++) 
          jay(1,2,3,4);
      }

      function MyObj () {}
      MyObj.prototype.eff = eff;
      MyObj.prototype.gee = gee;

      var myObj = new MyObj();
      function measurePrototypeMethodCall () {
        for (var i = 0; i < iterations; i++) 
          myObj.eff();
      }
      function measurePrototypeMethodCallWithOneParameter () {
        for (var i = 0; i < iterations; i++) 
          myObj.gee(1, 2, 3, 4, 5, 6);
      }

      var obj = {};
      obj.f = eff;
      obj.g = gee;
      function measureMethodCall () {
        for (var i = 0; i < iterations; i++) 
          myObj.eff();
      }
      function measureMethodCallWithOneParameter () {
        for (var i = 0; i < iterations; i++) 
          myObj.gee(1);
      }

      (new Measurement({'assignment': measureAssignment,
                        'function call': measureFunctionCall,
                        'function call with 1 parameter': measureFunctionCallWithOneParameter,
                        'function call with 2 parameters': measureFunctionCallWithTwoParameters,
                        'function call with 3 parameters': measureFunctionCallWithThreeParameters,
                        'function call with 4 parameters': measureFunctionCallWithFourParameters,
                        'method call': measureMethodCall,
                        'method call with 1 parameter': measureMethodCallWithOneParameter,
                        'prototype method call': measurePrototypeMethodCall,
                        'prototype method call with 1 parameter': measurePrototypeMethodCallWithOneParameter,
                        'empty': empty})).run();
    </script>
  </canvas>
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