自己实现Linux系统任务管理器(附源码)

曾经终败给现在 2022-06-17 05:43 135阅读 0赞

### 一、前言 ###

之前在操作系统课程中，使用Java实现的任务管理器，使用了Swing界面、Runtime、Process相关类。文章总结和程序下载在下面：

Java调用批处理或可执行文件和Runtime、Process类实现Java版进程管理器：[http://blog.csdn.net/ljheee/article/details/52067690][http_blog.csdn.net_ljheee_article_details_52067690]

Java进程管理器MyProcess.rar----免积分下载：[http://download.csdn.net/detail/ljheee/9598423][http_download.csdn.net_detail_ljheee_9598423]

虽然基本功能实现了，Java跨平台的特性，也使得这个应用在Linux上跑，但是在实现这个版本之后就已经感觉到Java对操作系统信息的提取与封装是有限的，Process包含的进程信息有限，且操作不方便。

因此最近在Linux课程中，决定用Qt界面+Linux方式实现自己的Linux版任务管理器。在程序设计之前，有必要先了解下Linux系统进程信息提取方式，因为这种“Linux方式”不像Java的Process类封装那样，不管底层，只管调用  process.getInputStream();去读取流。

### 二、Linux下/proc目录简介 ###

Linux内核提供了一种通过 /proc 文件系统，在运行时访问内核内部[数据结构][Link 1]、改变内核设置的机制。proc文件系统是一个伪文件系统，它只存在内存当中，而不占用外存空间。它以文件系统的方式为访问系统内核数据的操作提供接口。

系统中当前运行的每一个进程都有对应的一个目录在/proc下，以进程的 PID号为目录名，它们是读取进程信息的接口。而self目录则是读取进程本身的信息接口，是一个link。

直接打开自己安装的Linux系统，进入/proc，可以看到很多数字命名的文件夹；文件夹名的数字，代表当前运行的一个进程的PID，它是读取进程信息的接口。

Linux下/proc下其他重要目录

/proc/cpuinfo     --cpu的信息

/proc/devices     --已经加载的设备并分类

/proc/modules     --所有加载到内核的模块列表

/proc/stat        --所有的CPU活动信息，可采点计算cpu的利用率

/proc/version     --Linux内核版本和gcc版本

### 三、Qt实现Linux版任务管理器 ###

用户和应用程序可以通过/proc得到系统的信息，并可以改变内核的某些参数。由于系统的信息是动态改变的，所以用户或应用程序读取proc文件时，proc文件系统是动态从系统内核读出所需信息并提交的。

我们要显示系统信息，只需进行相应的文件操作就行了。

Qt的发展势头相当猛，qt的可移植性相当强，现在应用程序做界面基本都用Qt。Qt是诺基亚开发的一个跨平台的C++图形用户界面应用程序框架。Qt商业版只能试用30天，不过有GPL版的，可以免费使用。有一个非常不错的免费Qt集成开发环境QtCreator IDE。Linux版任务管理器采用的是Qt来实现图形界面。

步骤：

1、Linux下安装Qt Creator，打开新建一个工程，工程目录下，相关文件会有6个，具体见下图**--**工程文件夹：

![SouthEast][]

编译完成后的实现效果：

“内存信息”模块：

![SouthEast 1][]

“进程信息”模块：

![SouthEast 2][]

“模块信息”模块：

![SouthEast 3][]

“系统信息”模块：

![SouthEast 4][]

“关于”模块：

![SouthEast 5][]

完整源码如下：

main.cpp    工程运行的入口，创建工程时自动创建的，不需要修改。

#include <QApplication>
    #include "mainwindow.h"
    
    int main(int argc, char *argv[])
    {
        QApplication a(argc, argv);
        MainWindow w;
        w.show();
        
        return a.exec();
    }

mainwindow.h  工程头文件，定义资源和事件响应函数声明。

#ifndef MAINWINDOW_H
    #define MAINWINDOW_H
    
    #include <QMainWindow>
    #include <QFile>
    #include <QDir>
    #include <QTimer>
    #include <QMessageBox>
    namespace Ui {
    class MainWindow;
    }
    
    class MainWindow : public QMainWindow
    {
        Q_OBJECT
        
    public:
        explicit MainWindow(QWidget *parent = 0);
        ~MainWindow();
        
    private:
        Ui::MainWindow *ui;//界面资源类，所有的界面元素都是通过该类来调用
        QTimer *timer; //计时器
    
        private slots:
        void on_pushButton_pkill_clicked();
        void on_pushButton_prefresh_clicked();
        void on_pushButton_Model_install_clicked();
        void on_pushButton_Model_remove_clicked();
        void on_pushButton_Model_refresh_clicked();
        void on_pushButton_reboot_clicked();
        void on_pushButton_halt_clicked();
        void on_tabWidget_INFO_currentChanged(int index);
        void timer_update_currentTabInfo();
        //显示tab中的内容
        void show_tabWidgetInfo(int index);
    };
    
    #endif // MAINWINDOW_H

mainwindow.cpp  工程最重要的源文件，完成主要的业务逻辑。

#include "mainwindow.h"
    #include "ui_mainwindow.h"
    #include <QListWidget>
    #include <QListWidgetItem>
    #include <QStringList>
    
    int a0 = 0, a1 = 0, b0 = 0, b1 = 0;
    
    MainWindow::MainWindow(QWidget *parent) :
        QMainWindow(parent),
        ui(new Ui::MainWindow)
    {
        ui->setupUi(this);
        timer = new QTimer(this);
        QWidget::connect( timer, SIGNAL( timeout() ), this, SLOT( timer_update_currentTabInfo() ) );//ui控件-事件响应
    
        QWidget::connect( ui->tabWidget_INFO, SIGNAL( currentChanged() ),
                          this, SLOT( on_tabWidget_currentChanged() ) );
        timer->start(1000);
    }
    
    
    
    
    MainWindow::~MainWindow()
    {
        delete ui;
        delete timer;
    }
    
    
    void MainWindow::timer_update_currentTabInfo()
    {
        int index = ui->tabWidget_INFO->currentIndex();
    
        //定时器只刷新内存tab页面，用于进度条动态显示
        if (index == 0)
        {
            show_tabWidgetInfo(index);
        }
    }
    
    void MainWindow::show_tabWidgetInfo(int index)
    {
        QString tempStr; //读取文件信息字符串
        QFile tempFile; //用于打开系统文件
        int pos; //读取文件的位置
    
        if (index == 0) //内存資源
        {
            tempFile.setFileName("/proc/meminfo"); //打开内存信息文件
            if ( !tempFile.open(QIODevice::ReadOnly) )
            {
                QMessageBox::warning(this, tr("warning"), tr("The meminfo file can not open!"), QMessageBox::Yes);
                return ;
            }
            QString memTotal;
            QString memFree;
            QString memUsed;
            QString swapTotal;
            QString swapFree;
            QString swapUsed;
            int nMemTotal, nMemFree, nMemUsed, nSwapTotal, nSwapFree, nSwapUsed;
    
            while (1)
            {
                tempStr = tempFile.readLine();
                pos = tempStr.indexOf("MemTotal");
                if (pos != -1)
                {
                    memTotal = tempStr.mid(pos+10, tempStr.length()-13);
                    memTotal = memTotal.trimmed();
                    nMemTotal = memTotal.toInt()/1024;
                }
                else if (pos = tempStr.indexOf("MemFree"), pos != -1)
                {
                    memFree = tempStr.mid(pos+9, tempStr.length()-12);
                    memFree = memFree.trimmed();
                    nMemFree = memFree.toInt()/1024;
                }
                else if (pos = tempStr.indexOf("SwapTotal"), pos != -1)
                {
                    swapTotal = tempStr.mid(pos+11, tempStr.length()-14);
                    swapTotal = swapTotal.trimmed();
                    nSwapTotal = swapTotal.toInt()/1024;
                }
                else if (pos = tempStr.indexOf("SwapFree"), pos != -1)
                {
                    swapFree = tempStr.mid(pos+10,tempStr.length()-13);
    
                    swapFree = swapFree.trimmed();
                    nSwapFree = swapFree.toInt()/1024;
                    break;
                }
            }
            nMemUsed = nMemTotal - nMemFree;
            nSwapUsed = nSwapTotal - nSwapFree;
            memUsed = QString::number(nMemUsed, 10);
            swapUsed = QString::number(nSwapUsed, 10);
            memFree = QString::number(nMemFree, 10);
            memTotal = QString::number(nMemTotal, 10);
            swapFree = QString::number(nSwapFree, 10);
            swapTotal = QString::number(nSwapTotal, 10);
    
            ui->label_RAM_Used->setText(memUsed+" MB");
            ui->label_RAM_Left->setText(memFree+" MB");
            ui->label_RAM_Total->setText(memTotal+" MB");
            ui->label_SWAP_Used->setText(swapUsed+" MB");
            ui->label_SWAP_Left->setText(swapFree+" MB");
            ui->label_SWAP_Total->setText(swapTotal+" MB");
    
            ui->progressBar_RAM->setValue(nMemUsed*100/nMemTotal);
            ui->progressBar_SWAP->setValue(nSwapUsed*100/nSwapTotal);
            tempFile.close(); //关闭内存信息文件
    
            int tt = 2; //取2个点采样计算cpu当前利用律
            int cpuInfo[2][7];
            int cpuTotal[2][2];
            while (tt)
            {
                tempFile.setFileName("/proc/stat"); //打开CPU使用状态信息
                if ( !tempFile.open(QIODevice::ReadOnly) )
                {
                    QMessageBox::warning(this, tr("warning"), tr("The stat file can not open!"), QMessageBox::Yes);
                    return;
                }
                tempStr = tempFile.readLine();
                for (int i = 0; i < 7; i++)
                {
                    cpuInfo[2-tt][i] = tempStr.section(" ", i+1, i+1).toInt();
                    cpuTotal[1][2-tt] += cpuInfo[2-tt][i];
                    if (i == 3)
                    {
                        cpuTotal[0][2-tt] += cpuInfo[2-tt][i];
                    }
                }
                tt--;
                tempFile.close(); //关闭stat文件
            }
            int a = cpuTotal[0][1] - cpuTotal[0][0];
            int b = cpuTotal[1][1] - cpuTotal[1][0];
            if (a < 0)
            {
                a = -a;
            }
            if (b < 0)
            {
                b = -b;
            }
            ui->progressBar_CPU->setValue(a*100/b);
            tempFile.setFileName("/proc/stat");  //linux下用/proc/stat文件来计算cpu的利用率
            //这个文件包含了所有CPU活动的信息，该文件中的所有值都是从系统启动开始累计到当前时刻。
    
            if ( !tempFile.open(QIODevice::ReadOnly) )
            {
                QMessageBox::warning(this, tr("warning"), tr("The stat file can not open!"), QMessageBox::Yes);
                return;
            }
            tempStr = tempFile.readLine();
            a0 = a1;
            b0 = b1;
            a1 = b1 = 0;
            int gg;
            for (int i = 0; i < 7; i++)
            {
                b1 += tempStr.section(" ", i+2, i+2).toInt();
                gg = b1;
                if (i == 3)
                {
                    a1 += tempStr.section(" ", i+2, i+2).toInt();
                }
            }
            int m, n;
            m = a1 - a0;
            n = b1 - b0;
            if (m < 0)
            {
                m = -m;
            }
            if (n < 0)
            {
                n = -n;
            }
            ui->progressBar_CPU->setValue( (n-m)*100/n );
            tempFile.close(); //关闭stat文件
        }
            else if (index == 1) //进程信息
            {
                ui->listWidget_process->clear();
                QDir qd("/proc");
                QStringList qsList = qd.entryList();
                QString qs = qsList.join("\n");
                QString id_of_pro;
                bool ok;
                int find_start = 3;
                int a, b;
                int nProPid; //进程PID
                int number_of_sleep = 0, number_of_run = 0, number_of_zombie = 0;
                int totalProNum = 0; //进程总数
                QString proName; //进程名
                QString proState; //进程状态
                QString proPri; //进程优先级
                QString proMem; //进程占用内存
                QListWidgetItem *title = new QListWidgetItem("PID\t" + QString::fromUtf8("名称") + "\t\t" +
                                                             QString::fromUtf8("状态") + "\t" +
                                                             QString::fromUtf8("优先级") + "\t" +
                                                             QString::fromUtf8("占用内存"), ui->listWidget_process);
                //循环读取进程
                while (1)
                {
                    //获取进程PID
                    a = qs.indexOf("\n", find_start);
                    b = qs.indexOf("\n", a+1);
                    find_start = b;
                    id_of_pro = qs.mid(a+1, b-a-1);
                    totalProNum++;
                    nProPid = id_of_pro.toInt(&ok, 10);
                    if(!ok)
                    {
                        break;
                    }
    
                    //打开PID所对应的进程状态文件
                    tempFile.setFileName("/proc/" + id_of_pro + "/stat");
                    if ( !tempFile.open(QIODevice::ReadOnly) )
                    {
                        QMessageBox::warning(this, tr("warning"), tr("The pid stat file can not open!"), QMessageBox::Yes);
                        return;
                    }
                    tempStr = tempFile.readLine();
                    if (tempStr.length() == 0)
                    {
                        break;
                    }
                    a = tempStr.indexOf("(");
                    b = tempStr.indexOf(")");
                    proName = tempStr.mid(a+1, b-a-1);
                    proName.trimmed(); //删除两端的空格
                    proState = tempStr.section(" ", 2, 2);
                    proPri = tempStr.section(" ", 17, 17);
                    proMem = tempStr.section(" ", 22, 22);
                    switch ( proState.at(0).toLatin1() )
                    {
                    case 'S':   number_of_sleep++; break; //Sleep
                    case 'R':   number_of_run++; break; //Running
                    case 'Z':   number_of_zombie++; break; //Zombie
                    default :   break;
                    }
                    if (proName.length() >= 12)
                    {
                        QListWidgetItem *item = new QListWidgetItem(id_of_pro + "\t" +
                                                                    proName + "\t" +
                                                                    proState + "\t" +
                                                                    proPri + "\t" +
                                                                    proMem, ui->listWidget_process);
                    }
                    else
                    {
                        QListWidgetItem *item = new QListWidgetItem(id_of_pro + "\t" +
                                                                    proName + "\t\t" +
                                                                    proState + "\t" +
                                                                    proPri + "\t" +
                                                                    proMem, ui->listWidget_process);
                    }
                }
                QString temp;
                temp = QString::number(totalProNum, 10);
                ui->label_pNum->setText(temp);
                temp = QString::number(number_of_run, 10);
                ui->label_pRun->setText(temp);
                temp = QString::number(number_of_sleep, 10);
                ui->label_pSleep->setText(temp);
                temp = QString::number(number_of_zombie, 10);
                ui->label_pZombie->setText(temp);
                tempFile.close(); //关闭该PID进程的状态文件
            }
            else if (index == 2) //模块信息
            {
                ui->listWidget_model->clear();
                //sys/module 是一个 sysfs 目录层次, 包含当前加载模块的信息. /proc/moudles 是旧式的, 那种信息的单个文件版本. 其中的条目包含了模块名, 每个模块占用的内存数量, 以及使用计数. 另外的字串追加到每行的末尾来指定标志, 对这个模块当前是活动的.
                tempFile.setFileName("/proc/modules"); //打开模块信息文件
                if ( !tempFile.open(QIODevice::ReadOnly) )
                {
                    QMessageBox::warning(this, tr("warning"), tr("The modules file can not open!"), QMessageBox::Yes);
                    return ;
                }
                //设置模块首行项目
                QListWidgetItem *title = new QListWidgetItem( QString::fromUtf8("名称") + "\t\t\t" +
                                                              QString::fromUtf8("使用内存数") + "\t\t" +
                                                              QString::fromUtf8("使用次數"), ui->listWidget_model);
                QString mod_Name, mod_Mem, mod_Num;
                //循环读取文件内容，查找需要的信息
                while (1)
                {
                    tempStr = tempFile.readLine();
                    if (tempStr.length() == 0)
                    {
                        break;
                    }
                    mod_Name = tempStr.section(" ", 0, 0);
                    mod_Mem = tempStr.section(" ", 1, 1);
                    mod_Num = tempStr.section(" ", 2, 2);
                    if (mod_Name.length() > 10)
                    {
                        QListWidgetItem *item = new QListWidgetItem(mod_Name + "\t\t" +
                                                                    mod_Mem + "\t\t" +
                                                                    mod_Num, ui->listWidget_model);
                    }
                    else
                    {
                        QListWidgetItem *item = new QListWidgetItem(mod_Name + "\t\t\t" +
                                                                    mod_Mem + "\t\t" +
                                                                    mod_Num, ui->listWidget_model);
                    }
                }
                tempFile.close(); //关闭模块信息文件
    
            }
            else if (index == 3) //系统信息
            {
                //int ok;
                tempFile.setFileName("/proc/cpuinfo"); //打开CPU信息文件
                if ( !tempFile.open(QIODevice::ReadOnly) )
                {
                    QMessageBox::warning(this, tr("warning"), tr("The cpuinfo file can not open!"), QMessageBox::Yes);
                    return;
                }
    
                //循环读取文件内容，查找需要的信息
                while (1)
                {
    
                    tempStr = tempFile.readLine();
    
                    //QMessageBox::warning(this, tr("msg"), tempStr, QMessageBox::Yes);
    
                    if(tempStr==NULL){//文件读完，跳出
                        break;
                    }
    
                    pos = tempStr.indexOf("model name");
                    if (pos != -1)
                    {
                        pos += 13; //跳过前面的"model name："所占用的字符
                        QString *cpu_name = new QString( tempStr.mid(pos, tempStr.length()-13) );
                        ui->label_CPUName->setText(*cpu_name);
                    }
                    else if (pos = tempStr.indexOf("vendor_id"), pos != -1)
                    {
                        pos += 12; //跳过前面的"vendor_id："所占用的字符
                        QString *cpu_type = new QString( tempStr.mid(pos, tempStr.length()-12) );
                        ui->label_CPUType->setText(*cpu_type);
                    }
                    else if (pos = tempStr.indexOf("cpu MHz"), pos != -1)
                    {
                        pos += 11; //跳过前面的"cpu MHz："所占用的字符
                        QString *cpu_frq = new QString( tempStr.mid(pos, tempStr.length()-11) );
                        double cpufrq = cpu_frq->toDouble(); //4核CPU
                        cpu_frq->setNum(cpufrq*4);
                        ui->label_CPUFrequency->setText(*cpu_frq + " HZ");
                    }
                    else if (pos = tempStr.indexOf("cache size"), pos!=-1)
                    {
                        pos += 13; //跳过前面的"cache size："所占用的字符
                        QString *cache_size = new QString( tempStr.mid(pos, tempStr.length()-16) );
                        int cachesize = cache_size->toInt(); //4核CPU
                        cache_size->setNum(cachesize*4);
                        ui->label_CatheCapacity->setText(*cache_size + " KB");
                    }
                    else //跳过其他的内容
                    {
                    }
                }
                tempFile.close(); //关闭CPU信息文件
                //打开操作系统信息文件
                tempFile.setFileName("/proc/version");
                if ( !tempFile.open(QIODevice::ReadOnly) )
                {
                    QMessageBox::warning(this, tr("warning"), tr("The version file can not open!"), QMessageBox::Yes);
                    return ;
                }
                tempStr = tempFile.readLine();
                pos = tempStr.indexOf("version");
                QString *os_version = new QString( tempStr.mid(0, pos-1) );
                ui->label_SystemType->setText(*os_version);
                int pos1 = tempStr.indexOf("(");
                QString *os_type = new QString( tempStr.mid(pos, pos1-pos-1) );
                ui->label_SystemVersion->setText(*os_type);
                pos = tempStr.indexOf("gcc version");
                pos1 = tempStr.indexOf("#");
                QString *gcc_info = new QString( tempStr.mid(pos+12, pos1-pos-14) );
                ui->label_GCCVersion->setText(*gcc_info);
                tempFile.close(); //关闭操作系统信息文件
            }
                else //说明
                {
                }
                return;
            }
    
            void MainWindow::on_pushButton_halt_clicked()
            {
                system("halt");
            }
    
            void MainWindow::on_pushButton_reboot_clicked()
            {
                system("reboot");
            }
    
            void MainWindow::on_tabWidget_INFO_currentChanged(int index)
            {
                show_tabWidgetInfo(index); //显示tab中的内容
                return ;
            }
    
            //杀死进程
            void MainWindow::on_pushButton_pkill_clicked()
            {
                //获得进程号
                QListWidgetItem *item = ui->listWidget_process->currentItem();
                QString pro = item->text();
                pro = pro.section("\t", 0, 0);
                system("kill " + pro.toLatin1());
                QMessageBox::warning(this, tr("kill"), QString::fromUtf8("该进程已被杀死!"), QMessageBox::Yes);
                //回到进程信息tab表
                show_tabWidgetInfo(1);
            }
    
            //刷新进程信息
            void MainWindow::on_pushButton_prefresh_clicked()
            {
                show_tabWidgetInfo(1);
            }
    
            void MainWindow::on_pushButton_Model_install_clicked()
            {
                show_tabWidgetInfo(2); //安装模块还不知道如何实现
                 QMessageBox::warning(this, tr("tip"), tr("安装模块还不知道如何实现"), QMessageBox::Yes);
            }
    
            void MainWindow::on_pushButton_Model_remove_clicked()
            {
                show_tabWidgetInfo(2);
                //卸载模块还不知道如何实现
                QMessageBox::warning(this, tr("tip"), tr("卸载模块还不知道如何实现"), QMessageBox::Yes);
            }
    
    
            void MainWindow::on_pushButton_Model_refresh_clicked()
            {
                show_tabWidgetInfo(2);
                QMessageBox::warning(this, tr("tip"), tr("刷新模块还不知道如何实现"), QMessageBox::Yes);
            }

Mainwindow.ui 工程界面文件。

<?xml version="1.0" encoding="UTF-8"?>
    <ui version="4.0">
     <class>MainWindow</class>
     <widget class="QMainWindow" name="MainWindow">
      <property name="geometry">
       <rect>
        <x>0</x>
        <y>0</y>
        <width>605</width>
        <height>438</height>
       </rect>
      </property>
      <property name="windowTitle">
       <string>MainWindow</string>
      </property>
      <widget class="QWidget" name="centralWidget">
       <widget class="QTabWidget" name="tabWidget_INFO">
        <property name="geometry">
         <rect>
          <x>0</x>
          <y>-10</y>
          <width>611</width>
          <height>341</height>
         </rect>
        </property>
        <property name="cursor">
         <cursorShape>WaitCursor</cursorShape>
        </property>
        <property name="tabShape">
         <enum>QTabWidget::Triangular</enum>
        </property>
        <property name="currentIndex">
         <number>3</number>
        </property>
        <property name="movable">
         <bool>false</bool>
        </property>
        <widget class="QWidget" name="MemoryInfo">
         <property name="toolTip">
          <string><html><head/><body><p>内存信息</p></body></html></string>
         </property>
         <property name="whatsThis">
          <string><html><head/><body><p>内存信息</p></body></html></string>
         </property>
         <attribute name="title">
          <string>内存信息</string>
         </attribute>
         <widget class="QGroupBox" name="groupBox">
          <property name="geometry">
           <rect>
            <x>0</x>
            <y>0</y>
            <width>591</width>
            <height>81</height>
           </rect>
          </property>
          <property name="title">
           <string>CPU</string>
          </property>
          <widget class="QProgressBar" name="progressBar_CPU">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>30</y>
             <width>431</width>
             <height>23</height>
            </rect>
           </property>
           <property name="value">
            <number>24</number>
           </property>
          </widget>
          <widget class="QLabel" name="label_11">
           <property name="geometry">
            <rect>
             <x>0</x>
             <y>30</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>CPU:</string>
           </property>
          </widget>
         </widget>
         <widget class="QGroupBox" name="groupBox_2">
          <property name="geometry">
           <rect>
            <x>0</x>
            <y>80</y>
            <width>591</width>
            <height>231</height>
           </rect>
          </property>
          <property name="title">
           <string>内存和交换分区</string>
          </property>
          <widget class="QProgressBar" name="progressBar_RAM">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>50</y>
             <width>431</width>
             <height>23</height>
            </rect>
           </property>
           <property name="value">
            <number>24</number>
           </property>
          </widget>
          <widget class="QProgressBar" name="progressBar_SWAP">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>140</y>
             <width>431</width>
             <height>23</height>
            </rect>
           </property>
           <property name="value">
            <number>24</number>
           </property>
          </widget>
          <widget class="QLabel" name="label_9">
           <property name="geometry">
            <rect>
             <x>0</x>
             <y>50</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>内存：</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_10">
           <property name="geometry">
            <rect>
             <x>0</x>
             <y>140</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>交换</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_12">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>80</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>Used:</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_13">
           <property name="geometry">
            <rect>
             <x>200</x>
             <y>80</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>Left:</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_14">
           <property name="geometry">
            <rect>
             <x>380</x>
             <y>80</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>Total:</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_15">
           <property name="geometry">
            <rect>
             <x>380</x>
             <y>170</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>Total:</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_16">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>170</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>Used:</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_20">
           <property name="geometry">
            <rect>
             <x>200</x>
             <y>170</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>Left:</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_RAM_Used">
           <property name="geometry">
            <rect>
             <x>90</x>
             <y>80</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>0</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_RAM_Left">
           <property name="geometry">
            <rect>
             <x>240</x>
             <y>80</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>0</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_RAM_Total">
           <property name="geometry">
            <rect>
             <x>420</x>
             <y>80</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>0</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_SWAP_Total">
           <property name="geometry">
            <rect>
             <x>420</x>
             <y>170</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>0</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_SWAP_Used">
           <property name="geometry">
            <rect>
             <x>90</x>
             <y>170</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>0</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_SWAP_Left">
           <property name="geometry">
            <rect>
             <x>240</x>
             <y>170</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>0</string>
           </property>
          </widget>
         </widget>
        </widget>
        <widget class="QWidget" name="Process">
         <attribute name="title">
          <string>进程信息</string>
         </attribute>
         <widget class="QListWidget" name="listWidget_process">
          <property name="geometry">
           <rect>
            <x>0</x>
            <y>0</y>
            <width>421</width>
            <height>271</height>
           </rect>
          </property>
         </widget>
         <widget class="QPushButton" name="pushButton_pkill">
          <property name="geometry">
           <rect>
            <x>20</x>
            <y>280</y>
            <width>98</width>
            <height>27</height>
           </rect>
          </property>
          <property name="text">
           <string>kill</string>
          </property>
         </widget>
         <widget class="QPushButton" name="pushButton_prefresh">
          <property name="geometry">
           <rect>
            <x>170</x>
            <y>280</y>
            <width>98</width>
            <height>27</height>
           </rect>
          </property>
          <property name="text">
           <string>refresh</string>
          </property>
         </widget>
         <widget class="QLabel" name="label">
          <property name="geometry">
           <rect>
            <x>430</x>
            <y>30</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>进程数：</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_pNum">
          <property name="geometry">
           <rect>
            <x>490</x>
            <y>30</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>0</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_2">
          <property name="geometry">
           <rect>
            <x>430</x>
            <y>60</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>运行数：</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_3">
          <property name="geometry">
           <rect>
            <x>430</x>
            <y>100</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>睡眠数：</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_4">
          <property name="geometry">
           <rect>
            <x>430</x>
            <y>140</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>浆死数：</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_pRun">
          <property name="geometry">
           <rect>
            <x>490</x>
            <y>60</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>0</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_pSleep">
          <property name="geometry">
           <rect>
            <x>490</x>
            <y>100</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>0</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_pZombie">
          <property name="geometry">
           <rect>
            <x>490</x>
            <y>140</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>0</string>
          </property>
         </widget>
        </widget>
        <widget class="QWidget" name="Module">
         <attribute name="title">
          <string>模块信息</string>
         </attribute>
         <widget class="QPushButton" name="pushButton_Model_install">
          <property name="geometry">
           <rect>
            <x>20</x>
            <y>280</y>
            <width>98</width>
            <height>27</height>
           </rect>
          </property>
          <property name="text">
           <string>Install</string>
          </property>
         </widget>
         <widget class="QPushButton" name="pushButton_Model_remove">
          <property name="geometry">
           <rect>
            <x>180</x>
            <y>280</y>
            <width>98</width>
            <height>27</height>
           </rect>
          </property>
          <property name="text">
           <string>Romove</string>
          </property>
         </widget>
         <widget class="QPushButton" name="pushButton_Model_refresh">
          <property name="geometry">
           <rect>
            <x>350</x>
            <y>280</y>
            <width>98</width>
            <height>27</height>
           </rect>
          </property>
          <property name="text">
           <string>refresh</string>
          </property>
         </widget>
         <widget class="QListWidget" name="listWidget_model">
          <property name="geometry">
           <rect>
            <x>0</x>
            <y>0</y>
            <width>561</width>
            <height>271</height>
           </rect>
          </property>
         </widget>
        </widget>
        <widget class="QWidget" name="System">
         <attribute name="title">
          <string>系统信息</string>
         </attribute>
         <widget class="QGroupBox" name="groupBox_3">
          <property name="geometry">
           <rect>
            <x>0</x>
            <y>0</y>
            <width>591</width>
            <height>171</height>
           </rect>
          </property>
          <property name="title">
           <string>处理器信息</string>
          </property>
          <widget class="QLabel" name="label_5">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>30</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>CPU名称：</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_6">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>60</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>CPU类型：</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_7">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>90</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>CPU频率：</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_8">
           <property name="geometry">
            <rect>
             <x>50</x>
             <y>120</y>
             <width>81</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>Cache大小：</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_CPUName">
           <property name="geometry">
            <rect>
             <x>140</x>
             <y>30</y>
             <width>321</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>未知</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_CPUType">
           <property name="geometry">
            <rect>
             <x>140</x>
             <y>60</y>
             <width>151</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>未知</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_CPUFrequency">
           <property name="geometry">
            <rect>
             <x>140</x>
             <y>90</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>未知</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_CatheCapacity">
           <property name="geometry">
            <rect>
             <x>140</x>
             <y>120</y>
             <width>66</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>未知</string>
           </property>
          </widget>
         </widget>
         <widget class="QGroupBox" name="groupBox_4">
          <property name="geometry">
           <rect>
            <x>0</x>
            <y>180</y>
            <width>591</width>
            <height>121</height>
           </rect>
          </property>
          <property name="title">
           <string>操作系统信息</string>
          </property>
          <widget class="QLabel" name="label_17">
           <property name="geometry">
            <rect>
             <x>70</x>
             <y>30</y>
             <width>111</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>操作系统类型：</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_18">
           <property name="geometry">
            <rect>
             <x>70</x>
             <y>60</y>
             <width>111</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>操作系统版本：</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_19">
           <property name="geometry">
            <rect>
             <x>70</x>
             <y>90</y>
             <width>111</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>GCC编译器：</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_SystemType">
           <property name="geometry">
            <rect>
             <x>190</x>
             <y>30</y>
             <width>151</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>未知</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_SystemVersion">
           <property name="geometry">
            <rect>
             <x>190</x>
             <y>60</y>
             <width>281</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>未知</string>
           </property>
          </widget>
          <widget class="QLabel" name="label_GCCVersion">
           <property name="geometry">
            <rect>
             <x>190</x>
             <y>90</y>
             <width>291</width>
             <height>17</height>
            </rect>
           </property>
           <property name="text">
            <string>未知</string>
           </property>
          </widget>
         </widget>
        </widget>
        <widget class="QWidget" name="tab">
         <attribute name="title">
          <string>关于</string>
         </attribute>
         <widget class="QLabel" name="label_21">
          <property name="geometry">
           <rect>
            <x>20</x>
            <y>30</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>项目名：</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_22">
          <property name="geometry">
           <rect>
            <x>100</x>
            <y>30</y>
            <width>191</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>Linux下Qt实现任务管理器</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_23">
          <property name="geometry">
           <rect>
            <x>100</x>
            <y>70</y>
            <width>191</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>ljheee  </string>
          </property>
         </widget>
         <widget class="QLabel" name="label_24">
          <property name="geometry">
           <rect>
            <x>20</x>
            <y>70</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>作者：</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_25">
          <property name="geometry">
           <rect>
            <x>100</x>
            <y>110</y>
            <width>191</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>2017-4-10</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_26">
          <property name="geometry">
           <rect>
            <x>20</x>
            <y>110</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>时间：</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_27">
          <property name="geometry">
           <rect>
            <x>100</x>
            <y>150</y>
            <width>191</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>QQ554278334</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_28">
          <property name="geometry">
           <rect>
            <x>20</x>
            <y>150</y>
            <width>66</width>
            <height>17</height>
           </rect>
          </property>
          <property name="text">
           <string>联系：</string>
          </property>
         </widget>
        </widget>
       </widget>
       <widget class="QPushButton" name="pushButton_reboot">
        <property name="geometry">
         <rect>
          <x>380</x>
          <y>340</y>
          <width>98</width>
          <height>27</height>
         </rect>
        </property>
        <property name="text">
         <string>reboot</string>
        </property>
       </widget>
       <widget class="QPushButton" name="pushButton_halt">
        <property name="geometry">
         <rect>
          <x>500</x>
          <y>340</y>
          <width>98</width>
          <height>27</height>
         </rect>
        </property>
        <property name="text">
         <string>shutdown</string>
        </property>
       </widget>
      </widget>
      <widget class="QMenuBar" name="menuBar">
       <property name="geometry">
        <rect>
         <x>0</x>
         <y>0</y>
         <width>605</width>
         <height>26</height>
        </rect>
       </property>
       <widget class="QMenu" name="menuSysMontior">
        <property name="title">
         <string>SysMontior</string>
        </property>
       </widget>
       <addaction name="menuSysMontior"/>
      </widget>
      <widget class="QToolBar" name="mainToolBar">
       <attribute name="toolBarArea">
        <enum>TopToolBarArea</enum>
       </attribute>
       <attribute name="toolBarBreak">
        <bool>false</bool>
       </attribute>
      </widget>
      <widget class="QStatusBar" name="statusBar"/>
     </widget>
     <layoutdefault spacing="6" margin="11"/>
     <resources/>
     <connections/>
    </ui>

** [Qt实现Linux任务管理器SysMonitor.zip][Qt_Linux_SysMonitor.zip][http://download.csdn.net/detail/ljheee/9817990  
][Qt_Linux_SysMonitor.zip]**

** **

[http_blog.csdn.net_ljheee_article_details_52067690]: http://blog.csdn.net/ljheee/article/details/52067690
[http_download.csdn.net_detail_ljheee_9598423]: http://download.csdn.net/detail/ljheee/9598423
[Link 1]: http://lib.csdn.net/base/datastructure
[SouthEast]: /images/20220617/4f69c2fe55a44855a90cd7aadcc13ef7.png
[SouthEast 1]: /images/20220617/d70a614fd89f40748dd9539e2c5180f7.png
[SouthEast 2]: /images/20220617/1e52028315d04e2eac17304777073164.png
[SouthEast 3]: /images/20220617/196a585e77514052bf6c4d82e65df55e.png
[SouthEast 4]: /images/20220617/4564a657022c43ea82b07d55f46e82e5.png
[SouthEast 5]: /images/20220617/2af5db08d8fb46ad92f1004169ddc3d2.png
[Qt_Linux_SysMonitor.zip]: http://download.csdn.net/detail/ljheee/9817990