81 lines
1.9 KiB
JavaScript
81 lines
1.9 KiB
JavaScript
/**
|
|
* 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 RCTRenderingPerf
|
|
* @flow
|
|
*/
|
|
'use strict';
|
|
|
|
var ReactDefaultPerf = require('ReactDefaultPerf');
|
|
var ReactPerf = require('ReactPerf');
|
|
|
|
var invariant = require('invariant');
|
|
|
|
type perfModule = {
|
|
start: () => void;
|
|
stop: () => void;
|
|
}
|
|
|
|
var perfModules = [];
|
|
var enabled = false;
|
|
|
|
var RCTRenderingPerf = {
|
|
// Once perf is enabled, it stays enabled
|
|
toggle: function() {
|
|
console.log('Render perfomance measurements enabled');
|
|
enabled = true;
|
|
},
|
|
|
|
start: function() {
|
|
if (!enabled) {
|
|
return;
|
|
}
|
|
|
|
ReactDefaultPerf.start();
|
|
perfModules.forEach((module) => module.start());
|
|
},
|
|
|
|
stop: function() {
|
|
if (!enabled) {
|
|
return;
|
|
}
|
|
|
|
ReactDefaultPerf.stop();
|
|
ReactDefaultPerf.printInclusive();
|
|
ReactDefaultPerf.printWasted();
|
|
|
|
var totalRender = 0;
|
|
var totalTime = 0;
|
|
var measurements = ReactDefaultPerf.getLastMeasurements();
|
|
for (var ii = 0; ii < measurements.length; ii++) {
|
|
var render = measurements[ii].render;
|
|
for (var nodeName in render) {
|
|
totalRender += render[nodeName];
|
|
}
|
|
totalTime += measurements[ii].totalTime;
|
|
}
|
|
console.log('Total time spent in render(): ' + totalRender + 'ms');
|
|
|
|
perfModules.forEach((module) => module.stop());
|
|
},
|
|
|
|
register: function(module: perfModule) {
|
|
invariant(
|
|
typeof module.start === 'function',
|
|
'Perf module should have start() function'
|
|
);
|
|
invariant(
|
|
typeof module.stop === 'function',
|
|
'Perf module should have stop() function'
|
|
);
|
|
perfModules.push(module);
|
|
}
|
|
};
|
|
|
|
module.exports = RCTRenderingPerf;
|