michael@0: function A(a) { this.a = a; }
michael@0: A.prototype.foo = function (x) {};
michael@0: function B(b) { this.b = b; }
michael@0: B.prototype.foo = function (x) {};
michael@0: function C(c) {}
michael@0: function makeArray(n) {
michael@0:     var classes = [A, B, C];
michael@0:     var arr = [];
michael@0:     for (var i = 0; i < n; i++) {
michael@0:         arr.push(new classes[i % 3](i % 3));
michael@0:     }
michael@0:     return arr;
michael@0: }
michael@0: function runner(arr, resultArray, len) {
michael@0:     for (var i = 0; i < len; i++) {
michael@0:         var obj = arr[i];
michael@0:         resultArray[0] += obj.foo(i);
michael@0:     }
michael@0: }
michael@0: var resultArray = [0];
michael@0: var arr = makeArray(30000);
michael@0: C.prototype.foo = Uint8ClampedArray;
michael@0: runner(arr, resultArray, 30000);