react-native/Libraries/Utilities/SamplingProfiler.js

36 lines
1004 B
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 SamplingProfiler
* @flow
*/
'use strict';
var SamplingProfiler = {
poke: function (token: number): void {
var error = null;
var result = null;
try {
result = global.pokeSamplingProfiler();
if (result === null) {
console.log('The JSC Sampling Profiler has started');
} else {
console.log('The JSC Sampling Profiler has stopped');
}
} catch (e) {
console.log(
'Error occured when restarting Sampling Profiler: ' + e.toString());
error = e.toString();
}
require('NativeModules').JSCSamplingProfiler.operationComplete(
token, result, error);
},
};
module.exports = SamplingProfiler;