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UIManagerStatTracker

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Reviewed By: @astreet

Differential Revision: D2442406
This commit is contained in:
Spencer Ahrens 2015-09-15 11:38:10 -07:00 committed by facebook-github-bot-6
parent 178d2759fc
commit 4dca06b238
2 changed files with 59 additions and 0 deletions
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2
Libraries/ReactNative/ReactNativeBaseComponent.js
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@ -35,6 +35,8 @@ type ReactNativeBaseComponentViewConfig = {
uiViewClassName: string; uiViewClassName: string;
} }
// require('UIManagerStatTracker').install(); // uncomment to enable
/** /**
* @constructor ReactNativeBaseComponent * @constructor ReactNativeBaseComponent
* @extends ReactComponent * @extends ReactComponent

57
Libraries/ReactNative/UIManagerStatTracker.js Normal file
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@ -0,0 +1,57 @@
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule UIManagerStatTracker
* @flow
*/
'use strict';
var RCTUIManager = require('NativeModules').UIManager;
var installed = false;
var UIManagerStatTracker = {
install: function() {
if (installed) {
return;
}
installed = true;
var statLogHandle;
var stats = {};
function printStats() {
console.log({UIManagerStatTracker: stats});
statLogHandle = null;
}
function incStat(key: string, increment: number) {
stats[key] = (stats[key] || 0) + increment;
if (!statLogHandle) {
statLogHandle = setImmediate(printStats);
}
}
var createViewOrig = RCTUIManager.createView;
RCTUIManager.createView = function(tag, className, rootTag, props) {
incStat('createView', 1);
incStat('setProp', Object.keys(props || []).length);
createViewOrig(tag, className, rootTag, props);
};
var updateViewOrig = RCTUIManager.updateView;
RCTUIManager.updateView = function(tag, className, props) {
incStat('updateView', 1);
incStat('setProp', Object.keys(props || []).length);
updateViewOrig(tag, className, props);
};
var manageChildrenOrig = RCTUIManager.manageChildren;
RCTUIManager.manageChildren = function(tag, moveFrom, moveTo, addTags, addIndices, remove) {
incStat('manageChildren', 1);
incStat('move', Object.keys(moveFrom || []).length);
incStat('remove', Object.keys(remove || []).length);
manageChildrenOrig(tag, moveFrom, moveTo, addTags, addIndices, remove);
};
},
};
module.exports = UIManagerStatTracker;