react-native/Libraries/Performance/SamplingProfiler.js

37 lines
912 B
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow strict-local
*/
'use strict';
const SamplingProfiler = {
poke: function(token: number): void {
let error = null;
let 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 occurred when restarting Sampling Profiler: ' + e.toString(),
);
error = e.toString();
}
const {JSCSamplingProfiler} = require('NativeModules');
JSCSamplingProfiler.operationComplete(token, result, error);
},
};
module.exports = SamplingProfiler;