Home > Backend Development > PHP Tutorial > Controlled experiment (1) - Batch cleaning of system temporary files, controlled experiment cleaning_PHP tutorial

Controlled experiment (1) - Batch cleaning of system temporary files, controlled experiment cleaning_PHP tutorial

WBOY
Release: 2016-07-12 08:59:44
Original
1150 people have browsed it

Controlled experiment (1) - Batch cleaning of system temporary files, controlled experiment cleaning

The language debate has been around for a long time, let’s do some IO experiments below (traversing more than 9G files, batch deletion), try to use facts to compare who is better and who is worse. Operating system: win7 64-bit, File package size: 9.68G.

1. Language: C#

Development environment: vs 2013

Total number of lines of code: 43 lines

Time taken: 7 seconds

Code:

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BatchDelete
{
    class Program
    {
        static void Main(string[] args)
        {
            // 输入目录 e:\tmp
            string path;
            Console.WriteLine("输入要清理的目录:");
            path = Console.ReadLine();
            // 开始计时
            Console.WriteLine("开始计时:"+DateTime.Now.ToString("HH:mm:ss"));
            // 先遍历匹配查找再循环删除
            if (Directory.Exists(path))
            {
                Console.Write("正在删除");
                foreach (string fileName in Directory.GetFileSystemEntries(path))
                {
                    if (File.Exists(fileName) && fileName.Contains("cachegrind.out"))
                    {
                        File.Delete(fileName);
                    }
                }
                Console.WriteLine("");
            }
            else
            {
                Console.WriteLine("该目录不存在!");
            }
            // 计时结束
            Console.WriteLine("结束计时:" + DateTime.Now.ToString("HH:mm:ss"));
            Console.ReadKey();
        }
    }
}
Copy after login

Operation rendering:

2. Language: C/C

Development environment: vs 2013

Total number of lines of code: 50 lines

Time taken: 36 seconds

Code:

#include <iostream><span>
#include </span><<span>string</span>><span>
#include </span><Windows.h><span>
#include </span><boost\filesystem\operations.hpp><span>
#include </span><boost\filesystem\path.hpp><span>
#include </span><boost\filesystem\convenience.hpp><span>
#include </span><boost\algorithm\<span>string</span>.hpp>
<span>using</span> <span>namespace</span><span> std;

</span><span>int</span> main(<span>int</span> argc, <span>char</span> *<span> argv[])
{
    </span><span>//</span><span> 输入目录 e:\tmp</span>
    <span>string</span><span> strPath;
    cout </span><< <span>"</span><span>输入要清理的目录:</span><span>"</span> <<<span> endl;
    getline(cin, strPath);
    </span><span>//</span><span> 开始计时    </span>
    SYSTEMTIME sys_time;        <span>//</span><span>声明变量</span>
    GetLocalTime(&sys_time);    <span>//</span><span>将变量值设置为本地时间</span>
    printf(<span>"</span><span>开始计时:%02d:%02d:%02d\n</span><span>"</span><span>, sys_time.wHour,sys_time.wMinute,sys_time.wSecond);
    </span><span>//</span><span> 先遍历匹配查找再循环删除</span>
    <span>namespace</span> fs =<span> boost::filesystem;
    fs::path full_path(fs::initial_path());
    full_path </span>=<span> fs::system_complete(fs::path(strPath, fs::native));
    </span><span>if</span><span> (fs::exists(full_path))
    {
        cout </span><< <span>"</span><span>正在删除</span><span>"</span><span> ;
        fs::directory_iterator item_begin(full_path);
        fs::directory_iterator item_end;
        </span><span>for</span> (; item_begin != item_end; item_begin++<span>)
        {
            </span><span>if</span> (!fs::is_directory(*<span>item_begin))
            {
                </span><span>if</span> (fs::exists(item_begin->path()) && boost::contains(item_begin->path().<span>string</span>(), <span>"</span><span>cachegrind.out</span><span>"</span><span>))
                {
                    fs::remove(item_begin</span>-><span>path());
                }
            }
        }
        cout </span><< <span>""</span> <<<span> endl;
    }
    </span><span>else</span><span>
    {
        cout </span><< <span>"</span><span>该目录不存在!</span><span>"</span> <<<span> endl;
    }
    </span><span>//</span><span> 计时结束</span>
    GetLocalTime(&<span>sys_time);
    printf(</span><span>"</span><span>计时结束:%02d:%02d:%02d\n</span><span>"</span><span>, sys_time.wHour, sys_time.wMinute, sys_time.wSecond);
    system(</span><span>"</span><span>pause</span><span>"</span><span>);
    </span><span>return</span> <span>0</span><span>;
}</span>
Copy after login

Operation rendering:

3. Language: PHP

Development environment: Phpstorm

Total number of lines of code: 32 lines

Time taken: 13 seconds

Code:

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 16-1-29
 * Time: 上午9:31
 */
date_default_timezone_set('prc');
//输入目录 e:\tmp
$path = 'e:\tmp';
//开始计时
echo date("H:i:s",time()) . '<br/>';
//先遍历匹配查找再循环删除
if(is_dir($path))
{
    echo "正在删除";
    $mydir = dir($path);
    while($file = $mydir->read())
    {
        if(file_exists("$path/$file") && strpos($file, 'cachegrind.out') === 0)
        {
            unlink("$path/$file");
        }
    }
    echo '<br/>';
}
else
{
    echo "该目录不存在!" . '<br/>';
}
//计时结束
echo date("H:i:s",time()) . '<br/>';
Copy after login

Operation rendering:

4. Language: Java

Development environment: eclipse

Total lines of code: 43 lines

Time consuming: 10 seconds

Code:

package com.yejing;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;

public class Test {

	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		// 输入目录 e:\tmp
		String path = null;
		System.out.println("输入要清理的目录:");
		path = s.next();
		// 开始计时
		Date nowTime=new Date(); 
		SimpleDateFormat time=new SimpleDateFormat("HH:mm:ss"); 
		System.out.println("开始计时:"+ time.format(nowTime)); 
		// 先遍历匹配查找再循环删除
		File dir = new File(path);
		if(dir.exists()){
			System.out.print("正在删除");
			File[] fs = dir.listFiles();
			for(int i=0;i<fs.length;i++){
				if(!fs[i].isDirectory()){
					if(fs[i].isFile() && fs[i].exists() && fs[i].getName().contains("cachegrind.out"))
					{
						fs[i].delete();  
					}
				}
			}
			System.out.println("");
		}else{
			System.out.println("该目录不存在!");
		}
		// 计时结束
		nowTime=new Date(); 
		System.out.println("开始计时:"+ time.format(nowTime)); 
	}

}
Copy after login

Operation rendering:

5. Language: Python 3.3.5

Development environment: IDLE

Total number of lines of code: 20 lines

Time consuming: 10 seconds

Code:

# -*- coding: utf-8 -*-  
import datetime
import os
 
# 输入目录 e:\tmp
path = input("输入要清理的目录:\n");
# 开始计时
print("开始计时:",datetime.datetime.now().strftime('%H:%M:%S'));
# 先遍历匹配查找再循环删除
if(os.path.exists(path)):
    print("正在删除");
    for parent,dirnames,filenames in os.walk(path):
        for filename in filenames:
            targetFile = os.path.join(parent,filename)
            if (os.path.isfile(targetFile) and "cachegrind.out" in targetFile):
                os.remove(targetFile)
else:
    print("该目录不存在!");
# 计时结束
print("结束计时:",datetime.datetime.now().strftime('%H:%M:%S'));
Copy after login

Operation rendering:

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1097380.htmlTechArticleControl Experiment (1) - Batch cleaning of system temporary files, control experiment cleaning language has been debated for a long time, do the following Some IO experiments (traversing more than 9G files, batch deletion), try to compare with facts...
Related labels:
source:php.cn
Statement of this Website
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
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template