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// Copyright 2012 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview Performance test for goog.structs.Map and
* goog.labs.structs.Map. To run this test fairly, you would have to
* compile this via JsCompiler (with --export_test_functions), and
* pull the compiled JS into an empty HTML file.
*/
goog.provide('goog.labs.structs.mapPerf');
goog.require('goog.dom');
goog.require('goog.labs.structs.Map');
goog.require('goog.structs.Map');
goog.require('goog.testing.PerformanceTable');
goog.require('goog.testing.jsunit');
goog.scope(function() {
var mapPerf = goog.labs.structs.mapPerf;
/**
* @typedef {goog.labs.structs.Map|goog.structs.Map}
*/
mapPerf.MapType;
/**
* @type {goog.testing.PerformanceTable}
*/
mapPerf.perfTable;
/**
* A key list. This maps loop index to key name to be used during
* benchmark. This ensure that we do not need to pay the cost of
* string concatenation/GC whenever we derive a key from loop index.
*
* This is filled once in setUpPage and then remain unchanged for the
* rest of the test case.
*
* @type {Array}
*/
mapPerf.keyList = [];
/**
* Maxium number of keys in keyList (and, by extension, the map under
* test).
* @type {number}
*/
mapPerf.MAX_NUM_KEY = 10000;
/**
* Fills the given map with generated key-value pair.
* @param {mapPerf.MapType} map The map to fill.
* @param {number} numKeys The number of key-value pair to fill.
*/
mapPerf.fillMap = function(map, numKeys) {
goog.asserts.assert(numKeys <= mapPerf.MAX_NUM_KEY);
for (var i = 0; i < numKeys; ++i) {
map.set(mapPerf.keyList[i], i);
}
};
/**
* Primes the given map with deletion of keys.
* @param {mapPerf.MapType} map The map to prime.
* @return {mapPerf.MapType} The primed map (for chaining).
*/
mapPerf.primeMapWithDeletion = function(map) {
for (var i = 0; i < 1000; ++i) {
map.set(mapPerf.keyList[i], i);
}
for (var i = 0; i < 1000; ++i) {
map.remove(mapPerf.keyList[i]);
}
return map;
};
/**
* Runs performance test for Map#get with the given map.
* @param {mapPerf.MapType} map The map to stress.
* @param {string} message Message to be put in performance table.
*/
mapPerf.runPerformanceTestForMapGet = function(map, message) {
mapPerf.fillMap(map, 10000);
mapPerf.perfTable.run(
function() {
// Creates local alias for map and keyList.
var localMap = map;
var localKeyList = mapPerf.keyList;
for (var i = 0; i < 500; ++i) {
var sum = 0;
for (var j = 0; j < 10000; ++j) {
sum += localMap.get(localKeyList[j]);
}
}
},
message);
};
/**
* Runs performance test for Map#set with the given map.
* @param {mapPerf.MapType} map The map to stress.
* @param {string} message Message to be put in performance table.
*/
mapPerf.runPerformanceTestForMapSet = function(map, message) {
mapPerf.perfTable.run(
function() {
// Creates local alias for map and keyList.
var localMap = map;
var localKeyList = mapPerf.keyList;
for (var i = 0; i < 500; ++i) {
for (var j = 0; j < 10000; ++j) {
localMap.set(localKeyList[i], i);
}
}
},
message);
};
goog.global['setUpPage'] = function() {
var content = goog.dom.createDom('div');
goog.dom.insertChildAt(document.body, content, 0);
var ua = navigator.userAgent;
content.innerHTML =
'<h1>Closure Performance Tests - Map</h1>' +
'<p><strong>User-agent: </strong><span id="ua">' + ua + '</span></p>' +
'<div id="perf-table"></div>' +
'<hr>';
mapPerf.perfTable = new goog.testing.PerformanceTable(
goog.dom.getElement('perf-table'));
// Fills keyList.
for (var i = 0; i < mapPerf.MAX_NUM_KEY; ++i) {
mapPerf.keyList.push('k' + i);
}
};
goog.global['testGetFromLabsMap'] = function() {
mapPerf.runPerformanceTestForMapGet(
new goog.labs.structs.Map(), '#get: no previous deletion (Labs)');
};
goog.global['testGetFromOriginalMap'] = function() {
mapPerf.runPerformanceTestForMapGet(
new goog.structs.Map(), '#get: no previous deletion (Original)');
};
goog.global['testGetWithPreviousDeletionFromLabsMap'] = function() {
mapPerf.runPerformanceTestForMapGet(
mapPerf.primeMapWithDeletion(new goog.labs.structs.Map()),
'#get: with previous deletion (Labs)');
};
goog.global['testGetWithPreviousDeletionFromOriginalMap'] = function() {
mapPerf.runPerformanceTestForMapGet(
mapPerf.primeMapWithDeletion(new goog.structs.Map()),
'#get: with previous deletion (Original)');
};
goog.global['testSetFromLabsMap'] = function() {
mapPerf.runPerformanceTestForMapSet(
new goog.labs.structs.Map(), '#set: no previous deletion (Labs)');
};
goog.global['testSetFromOriginalMap'] = function() {
mapPerf.runPerformanceTestForMapSet(
new goog.structs.Map(), '#set: no previous deletion (Original)');
};
}); // goog.scope
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