diff --git a/lib/child_process.js b/lib/child_process.js index e1af90fb48..728b26b9ba 100644 --- a/lib/child_process.js +++ b/lib/child_process.js @@ -452,7 +452,15 @@ exports._forkChild = function(fd) { // set process.send() var p = createPipe(true); p.open(fd); + p.unref(); setupChannel(process, p); + + process.on('newListener', function(name) { + if (name == 'message' && this.listeners('message').length == 0) p.ref(); + }); + process.on('removeListener', function(name) { + if (name == 'message' && this.listeners('message').length == 0) p.unref(); + }); }; diff --git a/test/fixtures/child-process-spawn-node.js b/test/fixtures/child-process-spawn-node.js index 9bc6c19873..01a494ee59 100644 --- a/test/fixtures/child-process-spawn-node.js +++ b/test/fixtures/child-process-spawn-node.js @@ -1,10 +1,10 @@ var assert = require('assert'); -process.on('message', function(m) { +function onmessage(m) { console.log('CHILD got message:', m); assert.ok(m.hello); - // Note that we have to force exit. - process.exit(); -}); + process.removeListener('message', onmessage); +} +process.on('message', onmessage); process.send({ foo: 'bar' }); diff --git a/test/simple/test-child-process-fork3.js b/test/simple/test-child-process-fork3.js new file mode 100644 index 0000000000..0f75b029e3 --- /dev/null +++ b/test/simple/test-child-process-fork3.js @@ -0,0 +1,25 @@ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +var common = require('../common'); +var child_process = require('child_process'); + +child_process.fork(common.fixturesDir + '/empty.js'); // should not hang