mirror of https://gitee.com/bigwinds/arangodb
121 lines
3.2 KiB
JavaScript
121 lines
3.2 KiB
JavaScript
/*jslint indent: 2, nomen: true, maxlen: 100, white: true plusplus: true */
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/*global window*/
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// These values are injected
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/*global w:true, Construct, self*/
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Graph functionality
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2012 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Michael Hackstein
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/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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function WebWorkerWrapper(Class, callback) {
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"use strict";
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if (Class === undefined) {
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throw "A class has to be given.";
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}
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if (callback === undefined) {
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throw "A callback has to be given.";
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}
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var args = Array.prototype.slice.call(arguments),
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onmessage = function(e) {
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switch(e.data.cmd) {
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case "construct":
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try {
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w = new (Function.prototype.bind.apply(
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Construct, [null].concat(e.data.args)
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))();
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if (w) {
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self.postMessage({
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cmd: "construct",
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result: true
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});
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} else {
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self.postMessage({
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cmd: "construct",
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result: false
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});
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}
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} catch (err) {
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self.postMessage({
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cmd: "construct",
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result: false,
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error: err.message || err
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});
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}
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break;
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default:
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var msg = {
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cmd: e.data.cmd
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},
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res;
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if (w && typeof w[e.data.cmd] === "function") {
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try {
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res = w[e.data.cmd].apply(w, e.data.args);
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if (res) {
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msg.result = res;
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}
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self.postMessage(msg);
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} catch (err1) {
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msg.error = err1.message || err1;
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self.postMessage(msg);
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}
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} else {
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msg.error = "Method not known";
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self.postMessage(msg);
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}
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}
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},
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BlobObject = function(c) {
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var code = "var w, Construct = "
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+ c.toString()
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+ ";self.onmessage = "
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+ onmessage.toString();
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return new window.Blob(code.split());
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},
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worker,
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url = window.webkitURL || window.URL,
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blobPointer = new BlobObject(Class);
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worker = new window.Worker(url.createObjectURL(blobPointer));
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worker.onmessage = callback;
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this.call = function(cmd) {
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var args = Array.prototype.slice.call(arguments);
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args.shift();
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worker.postMessage({
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cmd: cmd,
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args: args
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});
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};
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args.shift();
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args.shift();
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args.unshift("construct");
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this.call.apply(this, args);
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} |