87 строки
2.3 KiB
JavaScript
87 строки
2.3 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 BridgeProfiling
|
|
* @flow
|
|
*/
|
|
'use strict';
|
|
|
|
var GLOBAL = GLOBAL || this;
|
|
var TRACE_TAG_REACT_APPS = 1 << 17;
|
|
|
|
var _enabled;
|
|
var _ReactPerf = null;
|
|
function ReactPerf() {
|
|
if (!_ReactPerf) {
|
|
_ReactPerf = require('ReactPerf');
|
|
}
|
|
return _ReactPerf;
|
|
}
|
|
|
|
var BridgeProfiling = {
|
|
setEnabled(enabled: boolean) {
|
|
_enabled = enabled;
|
|
|
|
ReactPerf().enableMeasure = enabled;
|
|
},
|
|
|
|
profile(profileName?: any) {
|
|
if (_enabled) {
|
|
profileName = typeof profileName === 'function' ?
|
|
profileName() : profileName;
|
|
global.nativeTraceBeginSection(TRACE_TAG_REACT_APPS, profileName);
|
|
}
|
|
},
|
|
|
|
profileEnd() {
|
|
if (_enabled) {
|
|
global.nativeTraceEndSection(TRACE_TAG_REACT_APPS);
|
|
}
|
|
},
|
|
|
|
reactPerfMeasure(objName: string, fnName: string, func: any): any {
|
|
return function (component) {
|
|
if (!_enabled) {
|
|
return func.apply(this, arguments);
|
|
}
|
|
|
|
var name = objName === 'ReactCompositeComponent' && this.getName() || '';
|
|
BridgeProfiling.profile(`${objName}.${fnName}(${name})`);
|
|
var ret = func.apply(this, arguments);
|
|
BridgeProfiling.profileEnd();
|
|
return ret;
|
|
};
|
|
},
|
|
|
|
swizzleReactPerf() {
|
|
ReactPerf().injection.injectMeasure(BridgeProfiling.reactPerfMeasure);
|
|
},
|
|
|
|
attachToRelayProfiler() {
|
|
// We don't want to create a dependency on `RelayProfiler`, so that's why
|
|
// we require it indirectly (rather than using a literal string). Since
|
|
// there's no guarantee that the module will be present, we must wrap
|
|
// everything in a try-catch block as requiring a non-existing module
|
|
// will just throw.
|
|
try {
|
|
var rpName = 'RelayProfiler';
|
|
var RelayProfiler = require(rpName);
|
|
RelayProfiler.attachProfileHandler('*', (name) => {
|
|
BridgeProfiling.profile(name);
|
|
return () => {
|
|
BridgeProfiling.profileEnd();
|
|
};
|
|
});
|
|
} catch(err) {}
|
|
}
|
|
};
|
|
|
|
BridgeProfiling.setEnabled(global.__RCTProfileIsProfiling || false);
|
|
|
|
module.exports = BridgeProfiling;
|