Method description:
Synchronize disk cache.
grammar:
The code copy is as follows:
fs.fsync(fd, [callback(err)])
Since this method belongs to the fs module, it is necessary to introduce the fs module before use (var fs= require("fs") )
Receive parameters:
fd file descriptor
callback callback, passing an exception parameter err
example:
The code copy 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:
The code copy is as follows:
fs.fsync(fd, callback)fs.fsync = function(fd, callback) {
binding.fsync(fd, makeCallback(callback));
};