mirror of
https://github.com/denoland/deno.git
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b40086fd7d
This commit changes "include_js_files!" macro from "deno_core" in a way that "dir" option doesn't cause specifiers to be rewritten to include it. Example: ``` include_js_files! { dir "js", "hello.js", } ``` The above definition required embedders to use: `import ... from "internal:<ext_name>/js/hello.js"`. But with this change, the "js" directory in which the files are stored is an implementation detail, which for embedders results in: `import ... from "internal:<ext_name>/hello.js"`. The directory the files are stored in, is an implementation detail and in some cases might result in a significant size difference for the snapshot. As an example, in "deno_node" extension, we store the source code in "polyfills" directory; which resulted in each specifier to look like "internal:deno_node/polyfills/<module_name>", but with this change it's "internal:deno_node/<module_name>". Given that "deno_node" has over 100 files, many of them having several import specifiers to the same extension, this change removes 10 characters from each import specifier.
248 lines
6.9 KiB
TypeScript
248 lines
6.9 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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import { resolve, toFileUrl } from "internal:deno_node/path.ts";
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import { notImplemented } from "internal:deno_node/_utils.ts";
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import { EventEmitter } from "internal:deno_node/events.ts";
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const environmentData = new Map();
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let threads = 0;
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export interface WorkerOptions {
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// only for typings
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argv?: unknown[];
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env?: Record<string, unknown>;
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execArgv?: string[];
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stdin?: boolean;
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stdout?: boolean;
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stderr?: boolean;
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trackUnmanagedFds?: boolean;
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resourceLimits?: {
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maxYoungGenerationSizeMb?: number;
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maxOldGenerationSizeMb?: number;
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codeRangeSizeMb?: number;
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stackSizeMb?: number;
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};
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eval?: boolean;
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transferList?: Transferable[];
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workerData?: unknown;
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}
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const kHandle = Symbol("kHandle");
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const PRIVATE_WORKER_THREAD_NAME = "$DENO_STD_NODE_WORKER_THREAD";
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class _Worker extends EventEmitter {
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readonly threadId: number;
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readonly resourceLimits: Required<
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NonNullable<WorkerOptions["resourceLimits"]>
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> = {
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maxYoungGenerationSizeMb: -1,
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maxOldGenerationSizeMb: -1,
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codeRangeSizeMb: -1,
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stackSizeMb: 4,
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};
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private readonly [kHandle]: Worker;
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postMessage: Worker["postMessage"];
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constructor(specifier: URL | string, options?: WorkerOptions) {
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notImplemented("Worker");
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super();
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if (options?.eval === true) {
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specifier = `data:text/javascript,${specifier}`;
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} else if (typeof specifier === "string") {
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// @ts-ignore This API is temporarily disabled
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specifier = toFileUrl(resolve(specifier));
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}
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const handle = this[kHandle] = new Worker(
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specifier,
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{
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name: PRIVATE_WORKER_THREAD_NAME,
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type: "module",
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} as globalThis.WorkerOptions, // bypass unstable type error
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);
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handle.addEventListener(
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"error",
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(event) => this.emit("error", event.error || event.message),
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);
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handle.addEventListener(
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"messageerror",
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(event) => this.emit("messageerror", event.data),
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);
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handle.addEventListener(
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"message",
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(event) => this.emit("message", event.data),
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);
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handle.postMessage({
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environmentData,
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threadId: (this.threadId = ++threads),
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workerData: options?.workerData,
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}, options?.transferList || []);
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this.postMessage = handle.postMessage.bind(handle);
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this.emit("online");
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}
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terminate() {
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this[kHandle].terminate();
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this.emit("exit", 0);
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}
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readonly getHeapSnapshot = () =>
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notImplemented("Worker.prototype.getHeapSnapshot");
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// fake performance
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readonly performance = globalThis.performance;
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}
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export const isMainThread =
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// deno-lint-ignore no-explicit-any
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(globalThis as any).name !== PRIVATE_WORKER_THREAD_NAME;
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// fake resourceLimits
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export const resourceLimits = isMainThread ? {} : {
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maxYoungGenerationSizeMb: 48,
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maxOldGenerationSizeMb: 2048,
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codeRangeSizeMb: 0,
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stackSizeMb: 4,
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};
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const threadId = 0;
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const workerData: unknown = null;
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// Like https://github.com/nodejs/node/blob/48655e17e1d84ba5021d7a94b4b88823f7c9c6cf/lib/internal/event_target.js#L611
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interface NodeEventTarget extends
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Pick<
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EventEmitter,
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"eventNames" | "listenerCount" | "emit" | "removeAllListeners"
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> {
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setMaxListeners(n: number): void;
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getMaxListeners(): number;
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// deno-lint-ignore no-explicit-any
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off(eventName: string, listener: (...args: any[]) => void): NodeEventTarget;
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// deno-lint-ignore no-explicit-any
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on(eventName: string, listener: (...args: any[]) => void): NodeEventTarget;
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// deno-lint-ignore no-explicit-any
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once(eventName: string, listener: (...args: any[]) => void): NodeEventTarget;
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addListener: NodeEventTarget["on"];
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removeListener: NodeEventTarget["off"];
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}
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type ParentPort = typeof self & NodeEventTarget;
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// deno-lint-ignore no-explicit-any
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const parentPort: ParentPort = null as any;
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/*
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if (!isMainThread) {
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// deno-lint-ignore no-explicit-any
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delete (globalThis as any).name;
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// deno-lint-ignore no-explicit-any
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const listeners = new WeakMap<(...args: any[]) => void, (ev: any) => any>();
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parentPort = self as ParentPort;
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parentPort.off = parentPort.removeListener = function (
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this: ParentPort,
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name,
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listener,
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) {
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this.removeEventListener(name, listeners.get(listener)!);
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listeners.delete(listener);
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return this;
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};
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parentPort.on = parentPort.addListener = function (
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this: ParentPort,
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name,
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listener,
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) {
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// deno-lint-ignore no-explicit-any
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const _listener = (ev: any) => listener(ev.data);
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listeners.set(listener, _listener);
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this.addEventListener(name, _listener);
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return this;
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};
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parentPort.once = function (this: ParentPort, name, listener) {
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// deno-lint-ignore no-explicit-any
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const _listener = (ev: any) => listener(ev.data);
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listeners.set(listener, _listener);
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this.addEventListener(name, _listener);
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return this;
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};
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// mocks
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parentPort.setMaxListeners = () => {};
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parentPort.getMaxListeners = () => Infinity;
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parentPort.eventNames = () => [""];
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parentPort.listenerCount = () => 0;
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parentPort.emit = () => notImplemented("parentPort.emit");
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parentPort.removeAllListeners = () =>
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notImplemented("parentPort.removeAllListeners");
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// Receive startup message
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[{ threadId, workerData, environmentData }] = await once(
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parentPort,
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"message",
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);
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// alias
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parentPort.addEventListener("offline", () => {
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parentPort.emit("close");
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});
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}
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*/
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export function getEnvironmentData(key: unknown) {
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notImplemented("getEnvironmentData");
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return environmentData.get(key);
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}
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export function setEnvironmentData(key: unknown, value?: unknown) {
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notImplemented("setEnvironmentData");
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if (value === undefined) {
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environmentData.delete(key);
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} else {
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environmentData.set(key, value);
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}
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}
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// deno-lint-ignore no-explicit-any
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const _MessagePort: typeof MessagePort = (globalThis as any).MessagePort;
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const _MessageChannel: typeof MessageChannel =
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// deno-lint-ignore no-explicit-any
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(globalThis as any).MessageChannel;
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export const BroadcastChannel = globalThis.BroadcastChannel;
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export const SHARE_ENV = Symbol.for("nodejs.worker_threads.SHARE_ENV");
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export function markAsUntransferable() {
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notImplemented("markAsUntransferable");
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}
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export function moveMessagePortToContext() {
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notImplemented("moveMessagePortToContext");
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}
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export function receiveMessageOnPort() {
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notImplemented("receiveMessageOnPort");
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}
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export {
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_MessageChannel as MessageChannel,
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_MessagePort as MessagePort,
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_Worker as Worker,
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parentPort,
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threadId,
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workerData,
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};
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export default {
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markAsUntransferable,
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moveMessagePortToContext,
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receiveMessageOnPort,
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MessagePort: _MessagePort,
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MessageChannel: _MessageChannel,
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BroadcastChannel,
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Worker: _Worker,
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getEnvironmentData,
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setEnvironmentData,
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SHARE_ENV,
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threadId,
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workerData,
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resourceLimits,
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parentPort,
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isMainThread,
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};
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