63 lines
1.6 KiB
JavaScript
63 lines
1.6 KiB
JavaScript
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/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow
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*/
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'use strict';
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const JSEventLoopWatchdog = require('./JSEventLoopWatchdog');
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const MessageQueue = require('../BatchedBridge/MessageQueue');
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const infoLog = require('../Utilities/infoLog');
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const BridgeSpyStallHandler = {
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register: function() {
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let spyBuffer = [];
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MessageQueue.spy(data => {
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spyBuffer.push(data);
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});
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const TO_JS = 0;
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JSEventLoopWatchdog.addHandler({
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onStall: () => {
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infoLog(
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spyBuffer.length + ' bridge messages during stall: ',
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spyBuffer.map(info => {
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let args = '<args>';
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try {
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args = JSON.stringify(info.args);
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} catch (e1) {
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if (Array.isArray(info.args)) {
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args = info.args.map(arg => {
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try {
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return JSON.stringify(arg);
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} catch (e2) {
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return '?';
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}
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});
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} else {
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args = 'keys:' + JSON.stringify(Object.keys(info.args));
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}
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}
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return (
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`${info.type === TO_JS ? 'N->JS' : 'JS->N'} : ` +
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`${info.module ? info.module + '.' : ''}${
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info.method
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}(${JSON.stringify(args)})`
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);
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}),
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);
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},
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onIterate: () => {
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spyBuffer = [];
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},
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});
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},
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};
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module.exports = BridgeSpyStallHandler;
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