Home  >  Article  >  Web Front-end  >  Instructions for using the fs.fsync method in node.js_node.js

Instructions for using the fs.fsync method in node.js_node.js

WBOY
WBOYOriginal
2016-05-16 16:26:591734browse

Method description:

Sync disk cache.

Grammar:

Copy code The code is as follows:

fs.fsync(fd, [callback(err)])

Since this method belongs to the fs module, the fs module needs to be introduced before use (var fs= require(“fs”) )

Receive parameters:

fd File descriptor

callback Callback, passing an exception parameter err

Example:

Copy code The code is as follows:

var fs = require('fs');
fs.open('content.txt', 'a', function(err,fd){
if(err){
throw err;
}
console.log('file open');
fs.fsync(fd, function(err){
if(err){
throw err;
}
console.log('done');
fs.close(fd,function(err){
if(err){
Throw err;
}
console.log('file closed');
})
})
})

Source code:

Copy code The code is as follows:

fs.fsync(fd, callback)fs.fsync = function(fd, callback) {
binding.fsync(fd, makeCallback(callback));
};
Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn