AI代码解释 functionawaitWriteFinish(){// ...省略fs.stat(fullPath,function(err,curStat){// ...省略if(prevStat&&curStat.size!=prevStat.size){this._pendingWrites[path].lastChange=now;}if(now-this._pendingWrites[path].lastChange>=threshold){deletethis._pendingWrites[path];awfEmit(null,cur...
一 前言 本文讲详细讲解 nodejs 中两个比较难以理解的部分异步I/O和事件循环,对 nodejs 核心知识点,做梳理和补充。 送人玫瑰,手有余香,希望阅读后感觉不错的同学,可以给点个赞,鼓励我继续创作前端硬文。 老规矩我们带上疑问开始今天的分析🤔🤔🤔: 1 说说 nodejs 的异步I/O ? 2 说说 nodejs 的事件...
The big issue in the code below that I'm really confused with is that the rendering can display time frames out of order even though I set asynchronous to false and then even put a mutex (named 'canModifyData') in the pre/post rendering events to make sure I couldnt load time frame...
Wait for the key vault deployment to finish. You should see "Your deployment is complete." Step 4: In the top search bar, type msdocs-expressjs-mongodb, then the App Service resource called msdocs-expressjs-mongodb-XYZ. In the App Service page, in the left menu, select Settings > ...
function foo() { return Promise.resolve(1) } async函数的函数体可以被看作是由0个或者多个await表达式分割开来的。从第一行代码直到(并包括)第一个await表达式(如果有的话)都是同步运行的。这样的话,一个不含await表达式的async函数是会同步运行的。然而,如果函数体内有一个await表达式,async函数就一定会异步...
const { parentPort } = require('worker_threads'); const delay = require('delay'); const ms = require('ms'); (async () => { // wait for a promise to finish await delay(ms('10s')); // signal to parent that the job is done if (parentPort) parentPort.postMessage('done'); ...
Ideally, threads should wait for all operations to finish before returning control to the main thread (avoid having open handles within a thread). If still want to have the possibility of having open handles or handle asynchrnous tasks, you can set the environment variable PISCINA_ENABLE_ASYNC...
// Wait for rendering to finish renderTask.promise.then(function () { _this.pageRendering = false if (_this.pageNumPending !== null) { // New page rendering is pending this.renderPage(_this.pageNumPending) _this.pageNumPending = null ...
function check_pwd(field,errmsg1){if (field.value == "") { alert(errmsg1); field.focus(); return false;}return true;}function verifynum(cntrl,errmsg3,flag,errmsg1,errmsg2,,to) { varval = 0; num_str = cntrl.value; if (num_str.indexOf(" ") >=0) {alert(errmsg3);cntrl.focus...
`finish`和`end`事件分别来自stream.Writable和stream.Readable。`finish`事件是stream.end()调用后触发,并且所有的chunk都由stream._transform()函数处理了。`end`事件 是所有的数据都输出后触发,即在transform._flush()调用后,回调。 1.4.5.3 transform._flush(callback) callback <Function> 回调函数,当剩余的数...