1// Copyright Joyent, Inc. and other Node contributors. 2// 3// Permission is hereby granted, free of charge, to any person obtaining a 4// copy of this software and associated documentation files (the 5// "Software"), to deal in the Software without restriction, including 6// without limitation the rights to use, copy, modify, merge, publish, 7// distribute, sublicense, and/or sell copies of the Software, and to permit 8// persons to whom the Software is furnished to do so, subject to the 9// following conditions: 10// 11// The above copyright notice and this permission notice shall be included 12// in all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 20// USE OR OTHER DEALINGS IN THE SOFTWARE. 21 22'use strict'; 23const common = require('../common'); 24const net = require('net'); 25 26process.once('beforeExit', common.mustCall(tryImmediate)); 27 28function tryImmediate() { 29 setImmediate(common.mustCall(() => { 30 process.once('beforeExit', common.mustCall(tryTimer)); 31 })); 32} 33 34function tryTimer() { 35 setTimeout(common.mustCall(() => { 36 process.once('beforeExit', common.mustCall(tryListen)); 37 }), 1); 38} 39 40function tryListen() { 41 net.createServer() 42 .listen(0) 43 .on('listening', common.mustCall(function() { 44 this.close(); 45 process.once('beforeExit', common.mustCall(tryRepeatedTimer)); 46 })); 47} 48 49// Test that a function invoked from the beforeExit handler can use a timer 50// to keep the event loop open, which can use another timer to keep the event 51// loop open, etc. 52function tryRepeatedTimer() { 53 const N = 5; 54 let n = 0; 55 const repeatedTimer = common.mustCall(function() { 56 if (++n < N) 57 setTimeout(repeatedTimer, 1); 58 }, N); 59 setTimeout(repeatedTimer, 1); 60} 61