stdio 的同步阻塞

【Synchronous blocking of stdio】

Worker 通过 <MessagePort> 使用消息传递来实现与 stdio 的交互。这意味着，来自 Worker 的 stdio 输出可能会被接收端的同步代码阻塞，从而阻塞 Node.js 事件循环。

import {
  Worker,
  isMainThread,
} from 'node:worker_threads';

if (isMainThread) {
  new Worker(new URL(import.meta.url));
  for (let n = 0; n < 1e10; n++) {
    // Looping to simulate work.
  }
} else {
  // This output will be blocked by the for loop in the main thread.
  console.log('foo');
}'use strict';

const {
  Worker,
  isMainThread,
} = require('node:worker_threads');

if (isMainThread) {
  new Worker(__filename);
  for (let n = 0; n < 1e10; n++) {
    // Looping to simulate work.
  }
} else {
  // This output will be blocked by the for loop in the main thread.
  console.log('foo');
}拷贝