136 lines
2.8 KiB
JavaScript
136 lines
2.8 KiB
JavaScript
//import { promise as Promise } from "../polyfill.js";
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import { create_object, is_function, is_object, is_string } from "../common.js";
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import handler from "./handler.js";
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let pid = 0;
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/**
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* @param {Object=} options
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* @constructor
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*/
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function WorkerIndex(options) {
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if (!(this instanceof WorkerIndex)) {
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return new WorkerIndex(options);
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}
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let opt;
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if (options) {
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if (is_function(opt = options.encode)) {
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options.encode = opt.toString();
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}
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} else {
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options = {};
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}
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// the factory is the outer wrapper from the build
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// we use "self" as a trap for node.js
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let factory = (self || window)._factory;
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if (factory) {
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factory = factory.toString();
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}
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const is_node_js = "undefined" == typeof window && self.exports,
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_self = this;
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this.worker = create(factory, is_node_js, options.worker);
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this.resolver = create_object();
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if (!this.worker) {
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return;
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}
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if (is_node_js) {
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this.worker.on("message", function (msg) {
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_self.resolver[msg.id](msg.msg);
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delete _self.resolver[msg.id];
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});
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} else {
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this.worker.onmessage = function (msg) {
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msg = msg.data;
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_self.resolver[msg.id](msg.msg);
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delete _self.resolver[msg.id];
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};
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}
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this.worker.postMessage({
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task: "init",
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factory: factory,
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options: options
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});
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}
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export default WorkerIndex;
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register("add");
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register("append");
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register("search");
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register("update");
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register("remove");
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function register(key) {
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WorkerIndex.prototype[key] = WorkerIndex.prototype[key + "Async"] = function () {
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const self = this,
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args = [].slice.call(arguments),
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arg = args[args.length - 1];
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let callback;
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if (is_function(arg)) {
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callback = arg;
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args.splice(args.length - 1, 1);
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}
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const promise = new Promise(function (resolve) {
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setTimeout(function () {
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self.resolver[++pid] = resolve;
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self.worker.postMessage({
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task: key,
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id: pid,
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args: args
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});
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});
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});
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if (callback) {
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promise.then(callback);
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return this;
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} else {
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return promise;
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}
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};
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}
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function create(factory, is_node_js, worker_path) {
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let worker;
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try {
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worker = is_node_js ? eval('new (require("worker_threads")["Worker"])(__dirname + "/node/node.js")') : factory ? new Worker(URL.createObjectURL(new Blob(["onmessage=" + handler.toString()], { type: "text/javascript" }))) : new Worker(is_string(worker_path) ? worker_path : "worker/worker.js", { type: "module" });
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} catch (e) {}
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return worker;
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} |