realm-js/tests/js/worker.js

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////////////////////////////////////////////////////////////////////////////
//
// Copyright 2016 Realm Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////
/* eslint-env es6, node */
'use strict';
class Worker {
constructor(script, args) {
let options;
if (process.execArgv.find(arg => arg.indexOf("--debug="))) {
options = { execArgv: ['--debug=44725'] };
}
this._process = require('child_process').fork(script, args, options);
this._process.on('message', (message) => {
if (this.onmessage) {
this.onmessage(message);
}
});
}
postMessage(message) {
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if (this._process) {
this._process.send(message);
}
}
terminate(cb) {
if (!cb) {
cb = function() { };
}
if (this._process) {
this._process.once('close', cb);
this._process.kill();
delete this._process;
} else {
cb();
}
}
}
module.exports = Worker;