react-native/Libraries/Interaction/BridgeSpyStallHandler.js

63 lines
1.6 KiB
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
*/
'use strict';
const JSEventLoopWatchdog = require('JSEventLoopWatchdog');
const MessageQueue = require('MessageQueue');
const infoLog = require('infoLog');
const BridgeSpyStallHandler = {
register: function() {
let spyBuffer = [];
MessageQueue.spy(data => {
spyBuffer.push(data);
});
const TO_JS = 0;
JSEventLoopWatchdog.addHandler({
onStall: () => {
infoLog(
spyBuffer.length + ' bridge messages during stall: ',
spyBuffer.map(info => {
let args = '<args>';
try {
args = JSON.stringify(info.args);
} catch (e1) {
if (Array.isArray(info.args)) {
args = info.args.map(arg => {
try {
return JSON.stringify(arg);
} catch (e2) {
return '?';
}
});
} else {
args = 'keys:' + JSON.stringify(Object.keys(info.args));
}
}
return (
`${info.type === TO_JS ? 'N->JS' : 'JS->N'} : ` +
`${info.module ? info.module + '.' : ''}${
info.method
}(${JSON.stringify(args)})`
);
}),
);
},
onIterate: () => {
spyBuffer = [];
},
});
},
};
module.exports = BridgeSpyStallHandler;