worker.startCpuProfile()

• 返回：<Promise>

  ¥Returns: <Promise>

启动 CPU 配置文件，然后返回一个 Promise，该 Promise 会以错误或 CPUProfileHandle 对象的形式完成。此 API 支持 await using 语法。

¥Starting a CPU profile then return a Promise that fulfills with an error or an CPUProfileHandle object. This API supports await using syntax.

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

const worker = new Worker(`
  const { parentPort } = require('worker_threads');
  parentPort.on('message', () => {});
  `, { eval: true });

worker.on('online', async () => {
  const handle = await worker.startCpuProfile();
  const profile = await handle.stop();
  console.log(profile);
  worker.terminate();
}); 拷贝

await using 示例。

¥await using example.

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

const w = new Worker(`
  const { parentPort } = require('worker_threads');
  parentPort.on('message', () => {});
  `, { eval: true });

w.on('online', async () => {
  // Stop profile automatically when return and profile will be discarded
  await using handle = await w.startCpuProfile();
}); 拷贝