├── 信息.png
├── 错-.png
├── cpu.png
├── mem.png
├── sys.png
├── 服务器内存监控.png
├── 服务器状态监控.png
├── 错- (1).png
├── 服务器cpu监控.png
├── 服务器内存监控 (1).png
├── main.cpp
├── res.qrc
├── tools
    ├── tools.h
    └── tools.cpp
├── drawer.ui
├── info_dialog.h
├── README.md
├── info_dialog.cpp
├── drawer.h
├── ActivityMonitor.pro
├── mainwindow.h
├── drawer.cpp
├── info_dialog.ui
├── mainwindow.ui
├── mainwindow.cpp
└── ActivityMonitor.pro.user


/信息.png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/信息.png


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/错-.png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/错-.png


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/cpu.png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/cpu.png


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/mem.png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/mem.png


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/sys.png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/sys.png


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/服务器内存监控.png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/服务器内存监控.png


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/服务器状态监控.png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/服务器状态监控.png


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/错- (1).png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/错- (1).png


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/服务器cpu监控.png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/服务器cpu监控.png


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/服务器内存监控 (1).png:
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https://raw.githubusercontent.com/NeymarL/Linux-Activity-Monitor/HEAD/服务器内存监控 (1).png


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/main.cpp:
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 1 | #include "mainwindow.h"
 2 | #include <QApplication>
 3 | 
 4 | int main(int argc, char *argv[])
 5 | {
 6 |     QApplication a(argc, argv);
 7 |     MainWindow w;
 8 |     w.show();
 9 | 
10 |     return a.exec();
11 | }
12 | 


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/res.qrc:
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 1 | <RCC>
 2 |     <qresource prefix="/new/prefix1">
 3 |         <file>错-.png</file>
 4 |         <file>错- (1).png</file>
 5 |         <file>服务器cpu监控.png</file>
 6 |         <file>服务器内存监控.png</file>
 7 |         <file>服务器内存监控 (1).png</file>
 8 |         <file>服务器状态监控.png</file>
 9 |         <file>信息.png</file>
10 |     </qresource>
11 | </RCC>
12 | 


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/tools/tools.h:
--------------------------------------------------------------------------------
 1 | #ifndef TOOLS_H
 2 | #define TOOLS_H
 3 | 
 4 | #include <map>
 5 | #include <iostream>
 6 | #include <fstream>
 7 | #include <string>
 8 | #include <sstream>
 9 | #include <vector>
10 | #include <string.h>
11 | 
12 | bool is_digit(char* str);
13 | std::map<int, std::string>* get_username_dict();
14 | std::string get_proper_unit(int num);
15 | 
16 | #endif
17 | 


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/drawer.ui:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <ui version="4.0">
 3 |  <class>Drawer</class>
 4 |  <widget class="QWidget" name="Drawer">
 5 |   <property name="geometry">
 6 |    <rect>
 7 |     <x>0</x>
 8 |     <y>0</y>
 9 |     <width>400</width>
10 |     <height>300</height>
11 |    </rect>
12 |   </property>
13 |   <property name="windowTitle">
14 |    <string>Form</string>
15 |   </property>
16 |  </widget>
17 |  <resources/>
18 |  <connections/>
19 | </ui>
20 | 


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/info_dialog.h:
--------------------------------------------------------------------------------
 1 | #ifndef INFO_DIALOG_H
 2 | #define INFO_DIALOG_H
 3 | 
 4 | #include <QDialog>
 5 | #include <fstream>
 6 | #include <string>
 7 | #include <string.h>
 8 | #include "tools/tools.h"
 9 | #include <QDebug>
10 | 
11 | namespace Ui {
12 | class Info_dialog;
13 | }
14 | 
15 | class Info_dialog : public QDialog
16 | {
17 |     Q_OBJECT
18 | 
19 | public:
20 |     explicit Info_dialog(QWidget *parent = 0);
21 |     ~Info_dialog();
22 | 
23 | private:
24 |     Ui::Info_dialog *ui;
25 | 
26 |     void read();
27 | };
28 | 
29 | #endif // INFO_DIALOG_H
30 | 


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/README.md:
--------------------------------------------------------------------------------
 1 | # Linux Activity Monitor
 2 | 
 3 | This application is able to monitor each process's cpu and memory utilization, cpu time, state, PID and user information by analyzing Linux/Unix's `\proc` virtual file sysyem. It can also display the overall information of cpu and memory use ratio, as well as the basic information of the machine.
 4 | 
 5 | The project is written in C++ with Qt4.
 6 | 
 7 | ## Screenshots
 8 | 
 9 | * CPU information
10 | 
11 | ![cpu](cpu.png)
12 | 
13 | * Memory information
14 | 
15 | ![mem](mem.png)
16 | 
17 | * Basic system information
18 | 
19 | ![sys](sys.png)
20 | 


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/info_dialog.cpp:
--------------------------------------------------------------------------------
 1 | #include "info_dialog.h"
 2 | #include "ui_info_dialog.h"
 3 | 
 4 | Info_dialog::Info_dialog(QWidget *parent) :
 5 |     QDialog(parent),
 6 |     ui(new Ui::Info_dialog)
 7 | {
 8 |     ui->setupUi(this);
 9 |     read();
10 | }
11 | 
12 | void Info_dialog::read()
13 | {
14 |     std::ifstream input;
15 |     input.open("/proc/cpuinfo");
16 |     if (input.is_open()) {
17 |         char buf[10000];
18 |         input.read(buf, 10000);
19 |         ui->textEdit->setText(buf);
20 |         input.close();
21 |     } else {
22 |         qDebug() << "Cannot open /proc/cpuinfo";
23 |     }
24 | }
25 | 
26 | Info_dialog::~Info_dialog()
27 | {
28 |     delete ui;
29 | }
30 | 


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/drawer.h:
--------------------------------------------------------------------------------
 1 | #ifndef DRAWER_H
 2 | #define DRAWER_H
 3 | 
 4 | #include <QWidget>
 5 | #include <QPainter>
 6 | #include <QFrame>
 7 | #include <QPainterPath>
 8 | #include <vector>
 9 | #include <QDebug>
10 | 
11 | namespace Ui {
12 | class Drawer;
13 | }
14 | 
15 | struct Point {
16 |     int x;
17 |     int y;
18 |     Point(int x_point, int y_point) {
19 |         x = 159 - x_point;
20 |         y = 100 - y_point;
21 |     }
22 | };
23 | 
24 | class Drawer : public QFrame
25 | {
26 |     Q_OBJECT
27 | 
28 | public:
29 |     explicit Drawer(QWidget *parent = 0);
30 |     ~Drawer();
31 |     int X(int x);   // trans coordinate
32 |     int Y(float y);
33 |     void add_data(float data);
34 | 
35 |     void change_queue();
36 | 
37 | private:
38 |     void paintEvent(QPaintEvent*);
39 | 
40 |     Ui::Drawer *ui;
41 |     int width = 160;
42 |     int height = 101;
43 |     int dist = 2;
44 |     std::vector<Point>* data_queue;
45 |     std::vector<Point>* cpu_queue;
46 |     std::vector<Point>* mem_queue;
47 |     int size = width / dist;
48 | };
49 | 
50 | #endif // DRAWER_H
51 | 


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/ActivityMonitor.pro:
--------------------------------------------------------------------------------
 1 | #-------------------------------------------------
 2 | #
 3 | # Project created by QtCreator 2017-02-16T12:59:29
 4 | #
 5 | #-------------------------------------------------
 6 | 
 7 | QT       += core gui
 8 | 
 9 | greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
10 | 
11 | TARGET = ActivityMonitor
12 | TEMPLATE = app
13 | 
14 | # The following define makes your compiler emit warnings if you use
15 | # any feature of Qt which as been marked as deprecated (the exact warnings
16 | # depend on your compiler). Please consult the documentation of the
17 | # deprecated API in order to know how to port your code away from it.
18 | DEFINES += QT_DEPRECATED_WARNINGS
19 | 
20 | # You can also make your code fail to compile if you use deprecated APIs.
21 | # In order to do so, uncomment the following line.
22 | # You can also select to disable deprecated APIs only up to a certain version of Qt.
23 | #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
24 | 
25 | 
26 | SOURCES += main.cpp\
27 |         mainwindow.cpp \
28 |     drawer.cpp \
29 |     tools/tools.cpp \
30 |     info_dialog.cpp
31 | 
32 | HEADERS  += mainwindow.h \
33 |     drawer.h \
34 |     tools/tools.h \
35 |     info_dialog.h
36 | 
37 | FORMS    += mainwindow.ui \
38 |     drawer.ui \
39 |     info_dialog.ui
40 | 
41 | RESOURCES += \
42 |     res.qrc
43 | 


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/mainwindow.h:
--------------------------------------------------------------------------------
 1 | #ifndef MAINWINDOW_H
 2 | #define MAINWINDOW_H
 3 | 
 4 | #include <QMainWindow>
 5 | #include <QTimer>
 6 | #include <QTime>
 7 | #include <fstream>
 8 | #include <string>
 9 | #include <QPushButton>
10 | #include <dirent.h>
11 | #include "tools/tools.h"
12 | #include <QStandardItemModel>
13 | #include <string.h>
14 | #include <map>
15 | #include <sys/types.h>
16 | #include <signal.h>
17 | #include <QMessageBox>
18 | #include <vector>
19 | #include <QSortFilterProxyModel>
20 | #include <QDialogButtonBox>
21 | #include "info_dialog.h"
22 | 
23 | #define CPU 0
24 | #define MEM 1
25 | #define CLK_TCK 100
26 | 
27 | namespace Ui {
28 | class MainWindow;
29 | }
30 | 
31 | class MainWindow : public QMainWindow
32 | {
33 |     Q_OBJECT
34 | 
35 | public:
36 |     explicit MainWindow(QWidget *parent = 0);
37 |     ~MainWindow();
38 | 
39 | private:
40 |     void get_cpu_stat();
41 | 
42 |     void get_process_info(int);
43 | 
44 |     void init_table();
45 | 
46 |     void refocus();
47 | 
48 |     void get_mem_stat();
49 | 
50 | private slots:
51 |     void update_data();
52 | 
53 |     void on_cpu_button_clicked();
54 | 
55 |     void on_mem_button_clicked();
56 | 
57 |     void on_tableView_clicked(const QModelIndex &index);
58 | 
59 |     void on_pushButton_3_clicked();
60 | 
61 |     void on_pushButton_clicked();
62 | 
63 | private:
64 |     Ui::MainWindow *ui;
65 |     QTimer* timer;
66 |     int total_cpu_time;
67 |     int total_user_time;
68 |     int total_sys_time;
69 |     int total_idle_time;
70 |     int state;
71 |     QStandardItemModel* model;
72 |     QStandardItemModel* cpu_model;
73 |     QStandardItemModel* mem_model;
74 |     std::map<int, int>* process_map;
75 |     std::map<int, std::string>* username_dict;
76 |     int num_processes;
77 |     int last_pid;
78 |     int mem_size;
79 | };
80 | 
81 | #endif // MAINWINDOW_H
82 | 


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/drawer.cpp:
--------------------------------------------------------------------------------
 1 | #include "drawer.h"
 2 | #include "ui_drawer.h"
 3 | 
 4 | Drawer::Drawer(QWidget *parent) :
 5 |     QFrame(parent),
 6 |     ui(new Ui::Drawer)
 7 | {
 8 |     ui->setupUi(this);
 9 |     cpu_queue = new std::vector<Point>;
10 |     mem_queue = new std::vector<Point>;
11 |     data_queue = cpu_queue;
12 | }
13 | 
14 | void Drawer::paintEvent(QPaintEvent *event)
15 | {
16 |     QPainterPath path;
17 |     int n = data_queue->size();
18 | 
19 |     path.moveTo(width - 1, height - 1);
20 | 
21 |     for (int i = 0; i < n; i++) {
22 |         path.lineTo((*data_queue)[i].x, (*data_queue)[i].y);
23 |     }
24 |     if (n != 0) {
25 |         path.lineTo((*data_queue)[n - 1].x, height - 1);
26 |     }
27 | 
28 |     QPainter painter(this);
29 |     painter.setPen(QPen(QColor(250, 50, 38), 1, Qt::SolidLine,
30 |                         Qt::FlatCap, Qt::MiterJoin));
31 |     painter.setBrush(QColor(255, 183, 177));
32 |     painter.drawPath(path);
33 | }
34 | 
35 | void Drawer::change_queue()
36 | {
37 |     if (data_queue == cpu_queue) {
38 |         data_queue = mem_queue;
39 |     } else {
40 |         data_queue = cpu_queue;
41 |     }
42 | }
43 | 
44 | /**
45 |  * @brief Drawer::add_data
46 |  * @param data  0 <= data <= 1
47 |  */
48 | void Drawer::add_data(float data)
49 | {
50 |     int y = (int)(this->height * data);
51 |     int n = data_queue->size();
52 |     int x = 0;
53 |     if (n >= this->size) {
54 |         // delete the last one
55 |         data_queue->pop_back();
56 |         n--;
57 |     }
58 |     // move forward
59 |     for (int i = 0; i < n; i++) {
60 |         (*data_queue)[i].x -= 2;
61 |     }
62 |     Point point(x, y);
63 |     // push front
64 |     data_queue->insert(data_queue->begin(), point);
65 |     // update canvas
66 |     update();
67 | }
68 | 
69 | Drawer::~Drawer()
70 | {
71 |     delete cpu_queue;
72 |     delete mem_queue;
73 |     delete ui;
74 | }
75 | 


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/tools/tools.cpp:
--------------------------------------------------------------------------------
 1 | #include "tools.h"
 2 | #include "string.h"
 3 | #include <QDebug>
 4 | #include <stdio.h>
 5 | 
 6 | using namespace std;
 7 | 
 8 | bool is_digit(char* str)
 9 | {
10 |     int n = strlen(str);
11 |     for (int i = 0; i < n; i++) {
12 |         if (str[i] < '0' || str[i] > '9') {
13 |             return false;
14 |         }
15 |     }
16 |     return true;
17 | }
18 | 
19 | map<int, string>* get_username_dict()
20 | {
21 |     ifstream input;
22 |     input.open("/etc/passwd");
23 |     map<int, string>* dict;
24 |     if (input.is_open()) {
25 |         dict = new map<int, string>;
26 |         char buffer[100];
27 | 
28 |         while (input.getline(buffer, 100)) {
29 |             int i = 0;
30 |             char* p = strtok(buffer, ":");
31 |             char* name = NULL;
32 |             while (p && i < 3) {
33 |                 if (i == 0) {
34 |                     name = p;
35 |                 } else if (i == 2) {
36 |                     int uid = atoi(p);
37 |                     (*dict)[uid] = string(name);
38 |                 }
39 |                 //qDebug() << p << endl;
40 |                 i++;
41 |                 p = strtok(NULL, ":");
42 |             }
43 |         }
44 |     }
45 |     else {
46 |         return NULL;
47 |     }
48 |     // map<int,string>::iterator it;
49 |     // for(it = dict->begin(); it != dict->end(); ++it)
50 |     //     qDebug() <<"key: "<< it->first <<" value: "<< (it->second).c_str() << endl;
51 |     return dict;
52 | }
53 | 
54 | string get_proper_unit(int num)
55 | {
56 |     string str = "KB";
57 |     float fnum = num;
58 |     if (fnum > 1024) {
59 |         fnum /= 1024;
60 |         str = "MB";
61 |     }
62 |     if (fnum > 1024) {
63 |         fnum /= 1024;
64 |         str = "GB";
65 |     }
66 |     char buf[20];
67 |     if (fnum > 99) {
68 |         sprintf(buf, "%.1f %s", fnum, str.c_str());
69 |     } else {
70 |         sprintf(buf, "%.2f %s", fnum, str.c_str());
71 |     }
72 | 
73 |     return string(buf);
74 | }
75 | 
76 | 


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/info_dialog.ui:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0" encoding="UTF-8"?>
  2 | <ui version="4.0">
  3 |  <class>Info_dialog</class>
  4 |  <widget class="QDialog" name="Info_dialog">
  5 |   <property name="geometry">
  6 |    <rect>
  7 |     <x>0</x>
  8 |     <y>0</y>
  9 |     <width>421</width>
 10 |     <height>476</height>
 11 |    </rect>
 12 |   </property>
 13 |   <property name="windowTitle">
 14 |    <string>系统信息</string>
 15 |   </property>
 16 |   <property name="styleSheet">
 17 |    <string notr="true">background-color:rgb(236, 236, 236);</string>
 18 |   </property>
 19 |   <layout class="QVBoxLayout" name="verticalLayout">
 20 |    <item>
 21 |     <widget class="QGroupBox" name="groupBox">
 22 |      <property name="sizePolicy">
 23 |       <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
 24 |        <horstretch>0</horstretch>
 25 |        <verstretch>0</verstretch>
 26 |       </sizepolicy>
 27 |      </property>
 28 |      <property name="title">
 29 |       <string>CPU信息</string>
 30 |      </property>
 31 |      <layout class="QVBoxLayout" name="verticalLayout_2">
 32 |       <item>
 33 |        <layout class="QHBoxLayout" name="horizontalLayout_2">
 34 |         <property name="spacing">
 35 |          <number>10</number>
 36 |         </property>
 37 |         <item>
 38 |          <widget class="QLabel" name="label_3">
 39 |           <property name="sizePolicy">
 40 |            <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
 41 |             <horstretch>0</horstretch>
 42 |             <verstretch>0</verstretch>
 43 |            </sizepolicy>
 44 |           </property>
 45 |           <property name="text">
 46 |            <string>CPU名字:</string>
 47 |           </property>
 48 |          </widget>
 49 |         </item>
 50 |         <item>
 51 |          <widget class="QLabel" name="label_cpu_name">
 52 |           <property name="sizePolicy">
 53 |            <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
 54 |             <horstretch>0</horstretch>
 55 |             <verstretch>0</verstretch>
 56 |            </sizepolicy>
 57 |           </property>
 58 |           <property name="text">
 59 |            <string>Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz</string>
 60 |           </property>
 61 |          </widget>
 62 |         </item>
 63 |        </layout>
 64 |       </item>
 65 |       <item>
 66 |        <layout class="QHBoxLayout" name="horizontalLayout">
 67 |         <property name="spacing">
 68 |          <number>10</number>
 69 |         </property>
 70 |         <item>
 71 |          <widget class="QLabel" name="label">
 72 |           <property name="sizePolicy">
 73 |            <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
 74 |             <horstretch>0</horstretch>
 75 |             <verstretch>0</verstretch>
 76 |            </sizepolicy>
 77 |           </property>
 78 |           <property name="text">
 79 |            <string>CPU核数:</string>
 80 |           </property>
 81 |          </widget>
 82 |         </item>
 83 |         <item>
 84 |          <widget class="QLabel" name="label_num_cores">
 85 |           <property name="sizePolicy">
 86 |            <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
 87 |             <horstretch>0</horstretch>
 88 |             <verstretch>0</verstretch>
 89 |            </sizepolicy>
 90 |           </property>
 91 |           <property name="text">
 92 |            <string>8</string>
 93 |           </property>
 94 |          </widget>
 95 |         </item>
 96 |        </layout>
 97 |       </item>
 98 |       <item>
 99 |        <layout class="QHBoxLayout" name="horizontalLayout_3">
100 |         <property name="spacing">
101 |          <number>10</number>
102 |         </property>
103 |         <item>
104 |          <widget class="QLabel" name="label_5">
105 |           <property name="sizePolicy">
106 |            <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
107 |             <horstretch>0</horstretch>
108 |             <verstretch>0</verstretch>
109 |            </sizepolicy>
110 |           </property>
111 |           <property name="text">
112 |            <string>CPU频率:</string>
113 |           </property>
114 |          </widget>
115 |         </item>
116 |         <item>
117 |          <widget class="QLabel" name="label_cpu_freq">
118 |           <property name="sizePolicy">
119 |            <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
120 |             <horstretch>0</horstretch>
121 |             <verstretch>0</verstretch>
122 |            </sizepolicy>
123 |           </property>
124 |           <property name="text">
125 |            <string>2194.918 MHz</string>
126 |           </property>
127 |          </widget>
128 |         </item>
129 |        </layout>
130 |       </item>
131 |       <item>
132 |        <layout class="QHBoxLayout" name="horizontalLayout_4">
133 |         <property name="spacing">
134 |          <number>10</number>
135 |         </property>
136 |         <item>
137 |          <widget class="QLabel" name="label_7">
138 |           <property name="sizePolicy">
139 |            <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
140 |             <horstretch>0</horstretch>
141 |             <verstretch>0</verstretch>
142 |            </sizepolicy>
143 |           </property>
144 |           <property name="text">
145 |            <string>缓存大小:</string>
146 |           </property>
147 |          </widget>
148 |         </item>
149 |         <item>
150 |          <widget class="QLabel" name="label_cpu_cache">
151 |           <property name="sizePolicy">
152 |            <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
153 |             <horstretch>0</horstretch>
154 |             <verstretch>0</verstretch>
155 |            </sizepolicy>
156 |           </property>
157 |           <property name="text">
158 |            <string>6144 KB</string>
159 |           </property>
160 |          </widget>
161 |         </item>
162 |        </layout>
163 |       </item>
164 |      </layout>
165 |     </widget>
166 |    </item>
167 |    <item>
168 |     <widget class="QGroupBox" name="groupBox_2">
169 |      <property name="sizePolicy">
170 |       <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
171 |        <horstretch>0</horstretch>
172 |        <verstretch>0</verstretch>
173 |       </sizepolicy>
174 |      </property>
175 |      <property name="title">
176 |       <string>版本信息</string>
177 |      </property>
178 |      <layout class="QVBoxLayout" name="verticalLayout_3">
179 |       <item>
180 |        <layout class="QHBoxLayout" name="horizontalLayout_5">
181 |         <property name="spacing">
182 |          <number>10</number>
183 |         </property>
184 |         <item>
185 |          <widget class="QLabel" name="label_9">
186 |           <property name="sizePolicy">
187 |            <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
188 |             <horstretch>0</horstretch>
189 |             <verstretch>0</verstretch>
190 |            </sizepolicy>
191 |           </property>
192 |           <property name="text">
193 |            <string>内核版本:</string>
194 |           </property>
195 |          </widget>
196 |         </item>
197 |         <item>
198 |          <widget class="QLabel" name="label_10">
199 |           <property name="sizePolicy">
200 |            <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
201 |             <horstretch>0</horstretch>
202 |             <verstretch>0</verstretch>
203 |            </sizepolicy>
204 |           </property>
205 |           <property name="text">
206 |            <string>Linux version 4.2.0-27-generic</string>
207 |           </property>
208 |          </widget>
209 |         </item>
210 |        </layout>
211 |       </item>
212 |       <item>
213 |        <layout class="QHBoxLayout" name="horizontalLayout_6">
214 |         <property name="spacing">
215 |          <number>10</number>
216 |         </property>
217 |         <item>
218 |          <widget class="QLabel" name="label_11">
219 |           <property name="sizePolicy">
220 |            <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
221 |             <horstretch>0</horstretch>
222 |             <verstretch>0</verstretch>
223 |            </sizepolicy>
224 |           </property>
225 |           <property name="text">
226 |            <string>编译器版本:</string>
227 |           </property>
228 |          </widget>
229 |         </item>
230 |         <item>
231 |          <widget class="QLabel" name="label_12">
232 |           <property name="sizePolicy">
233 |            <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
234 |             <horstretch>0</horstretch>
235 |             <verstretch>0</verstretch>
236 |            </sizepolicy>
237 |           </property>
238 |           <property name="text">
239 |            <string>gcc version 4.8.2</string>
240 |           </property>
241 |          </widget>
242 |         </item>
243 |        </layout>
244 |       </item>
245 |      </layout>
246 |     </widget>
247 |    </item>
248 |    <item>
249 |     <widget class="QGroupBox" name="groupBox_4">
250 |      <property name="title">
251 |       <string>详细信息</string>
252 |      </property>
253 |      <layout class="QVBoxLayout" name="verticalLayout_4">
254 |       <item>
255 |        <widget class="QTextEdit" name="textEdit">
256 |         <property name="readOnly">
257 |          <bool>true</bool>
258 |         </property>
259 |        </widget>
260 |       </item>
261 |      </layout>
262 |     </widget>
263 |    </item>
264 |    <item>
265 |     <widget class="QDialogButtonBox" name="buttonBox">
266 |      <property name="orientation">
267 |       <enum>Qt::Horizontal</enum>
268 |      </property>
269 |      <property name="standardButtons">
270 |       <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
271 |      </property>
272 |     </widget>
273 |    </item>
274 |   </layout>
275 |  </widget>
276 |  <resources/>
277 |  <connections>
278 |   <connection>
279 |    <sender>buttonBox</sender>
280 |    <signal>accepted()</signal>
281 |    <receiver>Info_dialog</receiver>
282 |    <slot>accept()</slot>
283 |    <hints>
284 |     <hint type="sourcelabel">
285 |      <x>248</x>
286 |      <y>254</y>
287 |     </hint>
288 |     <hint type="destinationlabel">
289 |      <x>157</x>
290 |      <y>274</y>
291 |     </hint>
292 |    </hints>
293 |   </connection>
294 |   <connection>
295 |    <sender>buttonBox</sender>
296 |    <signal>rejected()</signal>
297 |    <receiver>Info_dialog</receiver>
298 |    <slot>reject()</slot>
299 |    <hints>
300 |     <hint type="sourcelabel">
301 |      <x>316</x>
302 |      <y>260</y>
303 |     </hint>
304 |     <hint type="destinationlabel">
305 |      <x>286</x>
306 |      <y>274</y>
307 |     </hint>
308 |    </hints>
309 |   </connection>
310 |  </connections>
311 | </ui>
312 | 


--------------------------------------------------------------------------------
/mainwindow.ui:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0" encoding="UTF-8"?>
  2 | <ui version="4.0">
  3 |  <class>MainWindow</class>
  4 |  <widget class="QMainWindow" name="MainWindow">
  5 |   <property name="geometry">
  6 |    <rect>
  7 |     <x>0</x>
  8 |     <y>0</y>
  9 |     <width>604</width>
 10 |     <height>559</height>
 11 |    </rect>
 12 |   </property>
 13 |   <property name="sizePolicy">
 14 |    <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
 15 |     <horstretch>0</horstretch>
 16 |     <verstretch>0</verstretch>
 17 |    </sizepolicy>
 18 |   </property>
 19 |   <property name="windowTitle">
 20 |    <string>Activity Monitor</string>
 21 |   </property>
 22 |   <property name="windowIcon">
 23 |    <iconset resource="res.qrc">
 24 |     <normaloff>:/new/prefix1/服务器内存监控.png</normaloff>:/new/prefix1/服务器内存监控.png</iconset>
 25 |   </property>
 26 |   <property name="styleSheet">
 27 |    <string notr="true">QMainWindow {
 28 | 	border-radius:25px;
 29 | }</string>
 30 |   </property>
 31 |   <widget class="QWidget" name="centralWidget">
 32 |    <property name="styleSheet">
 33 |     <string notr="true">QWidget {
 34 | 	background-color:rgb(236, 236, 236);
 35 | }</string>
 36 |    </property>
 37 |    <layout class="QHBoxLayout" name="horizontalLayout_3">
 38 |     <item>
 39 |      <layout class="QVBoxLayout" name="verticalLayout">
 40 |       <property name="spacing">
 41 |        <number>10</number>
 42 |       </property>
 43 |       <property name="sizeConstraint">
 44 |        <enum>QLayout::SetNoConstraint</enum>
 45 |       </property>
 46 |       <item>
 47 |        <layout class="QHBoxLayout" name="horizontalLayout">
 48 |         <property name="spacing">
 49 |          <number>0</number>
 50 |         </property>
 51 |         <property name="sizeConstraint">
 52 |          <enum>QLayout::SetFixedSize</enum>
 53 |         </property>
 54 |         <property name="leftMargin">
 55 |          <number>0</number>
 56 |         </property>
 57 |         <property name="rightMargin">
 58 |          <number>75</number>
 59 |         </property>
 60 |         <item>
 61 |          <layout class="QHBoxLayout" name="horizontalLayout_6">
 62 |           <property name="leftMargin">
 63 |            <number>0</number>
 64 |           </property>
 65 |           <property name="rightMargin">
 66 |            <number>0</number>
 67 |           </property>
 68 |           <item>
 69 |            <widget class="QPushButton" name="pushButton_3">
 70 |             <property name="enabled">
 71 |              <bool>false</bool>
 72 |             </property>
 73 |             <property name="text">
 74 |              <string/>
 75 |             </property>
 76 |             <property name="icon">
 77 |              <iconset resource="res.qrc">
 78 |               <normaloff>:/new/prefix1/错- (1).png</normaloff>:/new/prefix1/错- (1).png</iconset>
 79 |             </property>
 80 |            </widget>
 81 |           </item>
 82 |           <item>
 83 |            <widget class="QPushButton" name="pushButton">
 84 |             <property name="text">
 85 |              <string/>
 86 |             </property>
 87 |             <property name="icon">
 88 |              <iconset resource="res.qrc">
 89 |               <normaloff>:/new/prefix1/信息.png</normaloff>:/new/prefix1/信息.png</iconset>
 90 |             </property>
 91 |            </widget>
 92 |           </item>
 93 |          </layout>
 94 |         </item>
 95 |         <item>
 96 |          <spacer name="horizontalSpacer">
 97 |           <property name="orientation">
 98 |            <enum>Qt::Horizontal</enum>
 99 |           </property>
100 |           <property name="sizeHint" stdset="0">
101 |            <size>
102 |             <width>40</width>
103 |             <height>20</height>
104 |            </size>
105 |           </property>
106 |          </spacer>
107 |         </item>
108 |         <item>
109 |          <widget class="QPushButton" name="cpu_button">
110 |           <property name="enabled">
111 |            <bool>false</bool>
112 |           </property>
113 |           <property name="minimumSize">
114 |            <size>
115 |             <width>80</width>
116 |             <height>25</height>
117 |            </size>
118 |           </property>
119 |           <property name="maximumSize">
120 |            <size>
121 |             <width>80</width>
122 |             <height>25</height>
123 |            </size>
124 |           </property>
125 |           <property name="styleSheet">
126 |            <string notr="true">background-color:rgb(108,107,108);
127 | color:rgb(255,254,250);</string>
128 |           </property>
129 |           <property name="text">
130 |            <string>CPU</string>
131 |           </property>
132 |          </widget>
133 |         </item>
134 |         <item>
135 |          <widget class="QPushButton" name="mem_button">
136 |           <property name="text">
137 |            <string>Memory</string>
138 |           </property>
139 |          </widget>
140 |         </item>
141 |         <item>
142 |          <spacer name="horizontalSpacer_2">
143 |           <property name="orientation">
144 |            <enum>Qt::Horizontal</enum>
145 |           </property>
146 |           <property name="sizeHint" stdset="0">
147 |            <size>
148 |             <width>40</width>
149 |             <height>20</height>
150 |            </size>
151 |           </property>
152 |          </spacer>
153 |         </item>
154 |        </layout>
155 |       </item>
156 |       <item>
157 |        <widget class="QTableView" name="tableView">
158 |         <property name="styleSheet">
159 |          <string notr="true">QTableView {
160 | 	background-color:rgb(255, 255, 255);
161 | 	font-size:13px;
162 | }
163 | </string>
164 |         </property>
165 |         <property name="editTriggers">
166 |          <set>QAbstractItemView::NoEditTriggers</set>
167 |         </property>
168 |         <property name="showDropIndicator" stdset="0">
169 |          <bool>false</bool>
170 |         </property>
171 |         <property name="alternatingRowColors">
172 |          <bool>true</bool>
173 |         </property>
174 |         <property name="selectionMode">
175 |          <enum>QAbstractItemView::SingleSelection</enum>
176 |         </property>
177 |         <property name="selectionBehavior">
178 |          <enum>QAbstractItemView::SelectRows</enum>
179 |         </property>
180 |         <property name="showGrid">
181 |          <bool>true</bool>
182 |         </property>
183 |         <property name="gridStyle">
184 |          <enum>Qt::SolidLine</enum>
185 |         </property>
186 |         <attribute name="horizontalHeaderCascadingSectionResizes">
187 |          <bool>false</bool>
188 |         </attribute>
189 |         <attribute name="horizontalHeaderDefaultSectionSize">
190 |          <number>70</number>
191 |         </attribute>
192 |         <attribute name="horizontalHeaderHighlightSections">
193 |          <bool>false</bool>
194 |         </attribute>
195 |         <attribute name="horizontalHeaderMinimumSectionSize">
196 |          <number>20</number>
197 |         </attribute>
198 |         <attribute name="verticalHeaderDefaultSectionSize">
199 |          <number>22</number>
200 |         </attribute>
201 |        </widget>
202 |       </item>
203 |       <item>
204 |        <layout class="QHBoxLayout" name="horizontalLayout_2">
205 |         <property name="spacing">
206 |          <number>0</number>
207 |         </property>
208 |         <property name="sizeConstraint">
209 |          <enum>QLayout::SetFixedSize</enum>
210 |         </property>
211 |         <item>
212 |          <spacer name="horizontalSpacer_3">
213 |           <property name="orientation">
214 |            <enum>Qt::Horizontal</enum>
215 |           </property>
216 |           <property name="sizeType">
217 |            <enum>QSizePolicy::Minimum</enum>
218 |           </property>
219 |           <property name="sizeHint" stdset="0">
220 |            <size>
221 |             <width>40</width>
222 |             <height>20</height>
223 |            </size>
224 |           </property>
225 |          </spacer>
226 |         </item>
227 |         <item>
228 |          <widget class="QWidget" name="widget" native="true">
229 |           <property name="sizePolicy">
230 |            <sizepolicy hsizetype="Fixed" vsizetype="Maximum">
231 |             <horstretch>0</horstretch>
232 |             <verstretch>0</verstretch>
233 |            </sizepolicy>
234 |           </property>
235 |           <property name="styleSheet">
236 |            <string notr="true">QWidget{
237 | 	background-color: rgb(255, 255, 255);
238 | 
239 | }
240 | Line {
241 | 	color:qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 rgba(0, 0, 0, 255), stop:1 rgba(255, 255, 255, 255))
242 | }
243 | QLabel {
244 | 	font-size:13px
245 | }</string>
246 |           </property>
247 |           <layout class="QHBoxLayout" name="horizontalLayout_5">
248 |            <property name="spacing">
249 |             <number>0</number>
250 |            </property>
251 |            <property name="leftMargin">
252 |             <number>0</number>
253 |            </property>
254 |            <property name="topMargin">
255 |             <number>0</number>
256 |            </property>
257 |            <property name="rightMargin">
258 |             <number>0</number>
259 |            </property>
260 |            <property name="bottomMargin">
261 |             <number>0</number>
262 |            </property>
263 |            <item>
264 |             <layout class="QHBoxLayout" name="horizontalLayout_4">
265 |              <property name="spacing">
266 |               <number>0</number>
267 |              </property>
268 |              <item>
269 |               <widget class="QFrame" name="frame_2">
270 |                <property name="sizePolicy">
271 |                 <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
272 |                  <horstretch>0</horstretch>
273 |                  <verstretch>0</verstretch>
274 |                 </sizepolicy>
275 |                </property>
276 |                <property name="minimumSize">
277 |                 <size>
278 |                  <width>150</width>
279 |                  <height>101</height>
280 |                 </size>
281 |                </property>
282 |                <property name="maximumSize">
283 |                 <size>
284 |                  <width>87</width>
285 |                  <height>101</height>
286 |                 </size>
287 |                </property>
288 |                <property name="frameShape">
289 |                 <enum>QFrame::StyledPanel</enum>
290 |                </property>
291 |                <property name="frameShadow">
292 |                 <enum>QFrame::Raised</enum>
293 |                </property>
294 |                <layout class="QVBoxLayout" name="verticalLayout_2">
295 |                 <item>
296 |                  <widget class="QLabel" name="left_1">
297 |                   <property name="text">
298 |                    <string>系统:                  0.00%</string>
299 |                   </property>
300 |                   <property name="textFormat">
301 |                    <enum>Qt::AutoText</enum>
302 |                   </property>
303 |                  </widget>
304 |                 </item>
305 |                 <item>
306 |                  <widget class="Line" name="line">
307 |                   <property name="orientation">
308 |                    <enum>Qt::Horizontal</enum>
309 |                   </property>
310 |                  </widget>
311 |                 </item>
312 |                 <item>
313 |                  <widget class="QLabel" name="left_2">
314 |                   <property name="text">
315 |                    <string>用户:                  0.00%</string>
316 |                   </property>
317 |                  </widget>
318 |                 </item>
319 |                 <item>
320 |                  <widget class="Line" name="line_2">
321 |                   <property name="orientation">
322 |                    <enum>Qt::Horizontal</enum>
323 |                   </property>
324 |                  </widget>
325 |                 </item>
326 |                 <item>
327 |                  <widget class="QLabel" name="left_3">
328 |                   <property name="text">
329 |                    <string>空闲:                  0.00%</string>
330 |                   </property>
331 |                  </widget>
332 |                 </item>
333 |                </layout>
334 |               </widget>
335 |              </item>
336 |              <item>
337 |               <widget class="Drawer" name="frame_center">
338 |                <property name="sizePolicy">
339 |                 <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
340 |                  <horstretch>0</horstretch>
341 |                  <verstretch>0</verstretch>
342 |                 </sizepolicy>
343 |                </property>
344 |                <property name="minimumSize">
345 |                 <size>
346 |                  <width>160</width>
347 |                  <height>101</height>
348 |                 </size>
349 |                </property>
350 |                <property name="maximumSize">
351 |                 <size>
352 |                  <width>160</width>
353 |                  <height>101</height>
354 |                 </size>
355 |                </property>
356 |                <property name="frameShape">
357 |                 <enum>QFrame::StyledPanel</enum>
358 |                </property>
359 |                <property name="frameShadow">
360 |                 <enum>QFrame::Raised</enum>
361 |                </property>
362 |               </widget>
363 |              </item>
364 |              <item>
365 |               <widget class="QFrame" name="frame">
366 |                <property name="sizePolicy">
367 |                 <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
368 |                  <horstretch>0</horstretch>
369 |                  <verstretch>0</verstretch>
370 |                 </sizepolicy>
371 |                </property>
372 |                <property name="minimumSize">
373 |                 <size>
374 |                  <width>150</width>
375 |                  <height>101</height>
376 |                 </size>
377 |                </property>
378 |                <property name="maximumSize">
379 |                 <size>
380 |                  <width>160</width>
381 |                  <height>101</height>
382 |                 </size>
383 |                </property>
384 |                <property name="frameShape">
385 |                 <enum>QFrame::StyledPanel</enum>
386 |                </property>
387 |                <property name="frameShadow">
388 |                 <enum>QFrame::Raised</enum>
389 |                </property>
390 |                <layout class="QVBoxLayout" name="verticalLayout_3">
391 |                 <property name="spacing">
392 |                  <number>6</number>
393 |                 </property>
394 |                 <property name="leftMargin">
395 |                  <number>9</number>
396 |                 </property>
397 |                 <property name="rightMargin">
398 |                  <number>9</number>
399 |                 </property>
400 |                 <item>
401 |                  <widget class="QLabel" name="right_1">
402 |                   <property name="styleSheet">
403 |                    <string notr="true"/>
404 |                   </property>
405 |                   <property name="text">
406 |                    <string>总利用率:           0.0%</string>
407 |                   </property>
408 |                  </widget>
409 |                 </item>
410 |                 <item>
411 |                  <widget class="Line" name="line_3">
412 |                   <property name="frameShadow">
413 |                    <enum>QFrame::Sunken</enum>
414 |                   </property>
415 |                   <property name="orientation">
416 |                    <enum>Qt::Horizontal</enum>
417 |                   </property>
418 |                  </widget>
419 |                 </item>
420 |                 <item>
421 |                  <widget class="QLabel" name="right_2">
422 |                   <property name="text">
423 |                    <string>进程</string>
424 |                   </property>
425 |                  </widget>
426 |                 </item>
427 |                 <item>
428 |                  <widget class="Line" name="line_4">
429 |                   <property name="orientation">
430 |                    <enum>Qt::Horizontal</enum>
431 |                   </property>
432 |                  </widget>
433 |                 </item>
434 |                 <item>
435 |                  <widget class="QLabel" name="right_3">
436 |                   <property name="text">
437 |                    <string>线程</string>
438 |                   </property>
439 |                  </widget>
440 |                 </item>
441 |                </layout>
442 |               </widget>
443 |              </item>
444 |             </layout>
445 |            </item>
446 |           </layout>
447 |          </widget>
448 |         </item>
449 |         <item>
450 |          <spacer name="horizontalSpacer_4">
451 |           <property name="orientation">
452 |            <enum>Qt::Horizontal</enum>
453 |           </property>
454 |           <property name="sizeType">
455 |            <enum>QSizePolicy::Minimum</enum>
456 |           </property>
457 |           <property name="sizeHint" stdset="0">
458 |            <size>
459 |             <width>40</width>
460 |             <height>20</height>
461 |            </size>
462 |           </property>
463 |          </spacer>
464 |         </item>
465 |        </layout>
466 |       </item>
467 |      </layout>
468 |     </item>
469 |    </layout>
470 |   </widget>
471 |  </widget>
472 |  <layoutdefault spacing="6" margin="11"/>
473 |  <customwidgets>
474 |   <customwidget>
475 |    <class>Drawer</class>
476 |    <extends>QFrame</extends>
477 |    <header location="global">drawer.h</header>
478 |    <container>1</container>
479 |   </customwidget>
480 |  </customwidgets>
481 |  <resources>
482 |   <include location="res.qrc"/>
483 |  </resources>
484 |  <connections/>
485 | </ui>
486 | 


--------------------------------------------------------------------------------
/mainwindow.cpp:
--------------------------------------------------------------------------------
  1 | #include "mainwindow.h"
  2 | #include "ui_mainwindow.h"
  3 | 
  4 | MainWindow::MainWindow(QWidget *parent) :
  5 |     QMainWindow(parent),
  6 |     ui(new Ui::MainWindow)
  7 | {
  8 |     ui->setupUi(this);
  9 |     this->timer = new QTimer(this);
 10 |     this->cpu_model = new QStandardItemModel();
 11 |     this->mem_model = new QStandardItemModel();
 12 |     this->state = CPU;
 13 |     this->model = this->cpu_model;
 14 |     this->init_table();
 15 |     ui->frame_center->add_data(0.1);
 16 |     process_map = new std::map<int, int>();
 17 |     username_dict = get_username_dict();
 18 |     timer->start(2000);
 19 |     this->total_cpu_time = 0;
 20 |     this->total_idle_time = 0;
 21 |     this->last_pid = -1;
 22 |     this->num_processes = 0;
 23 |     get_cpu_stat();
 24 |     get_process_info(0);
 25 |     connect(timer, SIGNAL(timeout()), this, SLOT(update_data()));
 26 | }
 27 | 
 28 | MainWindow::~MainWindow()
 29 | {
 30 |     if (timer->isActive()) {
 31 |         timer->stop();
 32 |     }
 33 |     delete timer;
 34 |     delete process_map;
 35 |     delete username_dict;
 36 |     delete cpu_model;
 37 |     delete mem_model;
 38 |     delete ui;
 39 | }
 40 | 
 41 | void MainWindow::update_data()
 42 | {
 43 |     switch (state) {
 44 |     case CPU:
 45 |         get_cpu_stat();
 46 |         break;
 47 | 
 48 |     case MEM:
 49 |         get_mem_stat();
 50 |         break;
 51 | 
 52 |     default:
 53 |         break;
 54 |     }
 55 |     refocus();
 56 | }
 57 | 
 58 | void MainWindow::get_cpu_stat()
 59 | {
 60 |     std::ifstream input;
 61 |     input.open("/proc/stat", std::ios_base::in);
 62 |     int total_diff = 0;
 63 |     if (input.is_open()) {
 64 |         std::string cpu;
 65 |         int user, nice, system, idle, iowait, irq, softirq, stealstolen, guest;
 66 |         input >> cpu >> user >> nice >> system >> idle >> iowait >> irq >> softirq >> stealstolen >> guest;
 67 |         input.close();
 68 |         int total_cpu_time = user + nice + system + idle + irq + softirq + guest + iowait + stealstolen;
 69 |         if (this->total_cpu_time != 0) {
 70 |             total_diff = total_cpu_time - this->total_cpu_time;
 71 |             int idle_diff = idle - this->total_idle_time;
 72 |             int user_diff = user - this->total_user_time;
 73 |             int sys_diff = system - this->total_sys_time;
 74 |             float total_rate = (total_diff - idle_diff) * 1.0 / total_diff;
 75 |             float idle_rate = idle_diff * 1.0 / total_diff;
 76 |             float user_rate = user_diff * 1.0 / total_diff;
 77 |             float sys_rate = sys_diff * 1.0 / total_diff;
 78 |             ui->left_1->setText(tr("系统:\t          %1%").arg(QString::number(sys_rate * 100, 'f',2 )));
 79 |             ui->left_2->setText(tr("用户:\t          %1%").arg(QString::number(user_rate * 100, 'f', 2)));
 80 |             ui->left_3->setText(tr("空闲:\t          %1%").arg(QString::number(idle_rate * 100, 'f', 2)));
 81 |             ui->right_1->setText(tr("总利用率:           %1%").arg(QString::number(total_rate * 100, 'f', 1)));
 82 |             ui->right_1->setStyleSheet("QLabel {\n	color:rgb(242, 21, 21)\n}");
 83 |             ui->frame_center->add_data(total_rate);
 84 |         }
 85 |         this->total_cpu_time = total_cpu_time;
 86 |         this->total_idle_time = idle;
 87 |         this->total_sys_time = system;
 88 |         this->total_user_time = user;
 89 |     }
 90 |     else {
 91 |         qDebug() << "Cannot open file" << endl;
 92 |     }
 93 |     get_process_info(total_diff);
 94 | }
 95 | 
 96 | void MainWindow::get_mem_stat()
 97 | {
 98 |     std::ifstream input;
 99 |     input.open("/proc/meminfo", std::ios_base::in);
100 |     if (input.is_open()) {
101 |         int mem_total, mem_free, mem_used, mem_cached;
102 |         int swap_total, swap_free, swap_used;
103 |         std::string tmp;
104 |         char buffer[100];
105 |         int values[45];
106 |         int i = 0;
107 |         while (i < 45) {
108 |             input >> tmp >> values[i];
109 |             input.getline(buffer, 100);
110 |             i++;
111 |         }
112 |         mem_total = values[0];
113 |         mem_free = values[1];
114 |         mem_used = mem_total - mem_free;
115 |         mem_cached = values[4];
116 |         swap_total = values[14];
117 |         swap_free = values[15];
118 |         swap_used = swap_total - swap_free;
119 |         float rate = mem_used * 100.0 / mem_total;
120 |         this->mem_size = mem_total;
121 |         ui->left_1->setText(tr("物理内存:      %1").arg(get_proper_unit(mem_total).c_str()));
122 |         ui->left_2->setText(tr("已使用内存:  %1").arg(get_proper_unit(mem_used).c_str()));
123 |         ui->left_3->setText(tr("可用内存:    %1").arg(get_proper_unit(mem_free).c_str()));
124 |         ui->right_1->setText(tr("总使用率:          %1%").arg(QString::number(rate, 'f', 2)));
125 |         ui->right_2->setText(tr("已缓存文件: %1").arg(get_proper_unit(mem_cached).c_str()));
126 |         ui->right_3->setText(tr("已使用的交换: %1 KB").arg(swap_used));
127 |         ui->frame_center->add_data(rate / 100);
128 |         input.close();
129 |     }
130 |     get_process_info(0);
131 | }
132 | 
133 | void MainWindow::get_process_info(int total_diff)
134 | {
135 |     struct dirent *ptr;
136 |     DIR *dir;
137 |     std::ifstream input;
138 |     dir = opendir("/proc");
139 |     int i = 0;
140 |     int total_threads = 0;
141 |     int cnt = 0;
142 |     while((ptr = readdir(dir)) != NULL) {
143 |         if (is_digit(ptr->d_name)) {
144 |             // qDebug() << ptr->d_name << endl;
145 |             model->setItem(i, 5, new QStandardItem(ptr->d_name));
146 |             model->item(i, 5)->setTextAlignment(Qt::AlignCenter);
147 |             char filename[20] = "/proc/";
148 |             strcat(filename, ptr->d_name);
149 |             input.open(strcat(filename, "/stat"));
150 |             if (input.is_open()) {
151 |                 cnt++;
152 |                 std::string name;   // process name
153 |                 int pid;            // process id
154 |                 char state;         // process state : "RSDZTW"
155 |                 int ppid, pgid, sid, tty_nr, tty_pgrp, flags, min_flt;
156 |                 int cmin_flt, maj_flt, cmaj_flt, priority, nice;
157 |                 long utime, stime, cutime, cstime;
158 |                 int num_threads, zero;
159 |                 unsigned long long start_time;
160 |                 input >> pid >> name >> state >> ppid >> pgid >> sid >> tty_nr \
161 |                         >> tty_pgrp >> flags >> min_flt >> cmin_flt >> maj_flt \
162 |                         >> cmaj_flt >> utime >> stime >> cutime >> cstime >> priority \
163 |                         >> nice >> num_threads >> zero >> start_time;
164 |                 // discard the parentheses
165 |                 char* tmp = (char*)name.c_str();
166 |                 int len = strlen(tmp);
167 |                 tmp[len - 1] = '\0';
168 |                 model->setItem(i, 0, new QStandardItem(tmp+1));
169 |                 // num threads
170 |                 if (this->state == CPU) {
171 |                     model->setItem(i, 3, new QStandardItem(QString::number(num_threads)));
172 |                     model->item(i, 3)->setTextAlignment(Qt::AlignCenter);
173 |                 } else {
174 |                     model->setItem(i, 4, new QStandardItem(QString::number(num_threads)));
175 |                     model->item(i, 4)->setTextAlignment(Qt::AlignCenter);
176 |                 }
177 |                 total_threads += num_threads;
178 |                 if (this->state == CPU) {
179 |                     // display process state
180 |                     switch (state) {
181 |                     case 'R':
182 |                         model->setItem(i, 4, new QStandardItem("运行"));
183 |                         break;
184 |                     case 'S':
185 |                         model->setItem(i, 4, new QStandardItem("休眠"));
186 |                         break;
187 |                     case 'D':
188 |                         model->setItem(i, 4, new QStandardItem("TASK_UNINTERRUPTIBLE"));
189 |                         break;
190 |                     case 'T':
191 |                         model->setItem(i, 4, new QStandardItem("停止"));
192 |                         break;
193 |                     case 'Z':
194 |                         model->setItem(i, 4, new QStandardItem("Zombie"));
195 |                         break;
196 |                     case 'W':
197 |                         model->setItem(i, 4, new QStandardItem("Paging"));
198 |                         break;
199 |                     default:
200 |                         break;
201 |                     }
202 |                     model->item(i, 4)->setTextAlignment(Qt::AlignCenter);
203 | 
204 |                     // compute processes' CPU rate
205 |                     if (total_diff == 0) {
206 |                         model->setItem(i, 1, new QStandardItem("00.00%"));
207 |                     } else {
208 |                         int total_process = utime + stime + cutime + cstime;
209 |                         if (process_map->find(pid) != process_map->end()) {
210 |                             int total_pro_diff = total_process - (*process_map)[pid];
211 |                             float rate = total_pro_diff * 8.0 / total_diff;
212 |                             QString temp = tr("%1%").arg(QString::number(rate * 100, 'f', 2));
213 |                             if (temp.length() < 6) {
214 |                                 temp = tr("0%1").arg(temp);
215 |                             }
216 |                             model->setItem(i, 1, new QStandardItem(temp));
217 | 
218 |                         } else {
219 |                             model->setItem(i, 1, new QStandardItem("00.00%"));
220 |                         }
221 |                         (*process_map)[pid] = total_process;
222 |                     }
223 |                     model->item(i, 1)->setTextAlignment(Qt::AlignCenter);
224 |                     // process runing time
225 |                     std::ifstream uptime;
226 |                     uptime.open("/proc/uptime");
227 |                     if (uptime.is_open()) {
228 |                         float total_time;
229 |                         uptime >> total_time;
230 |                         start_time = (int)(total_time - start_time * 1.0 / CLK_TCK);
231 |                         // qDebug() << pid << "\t" << start_time << endl;
232 |                         QDateTime time = QDateTime::fromTime_t(start_time, Qt::UTC, -8 * 60 * 60);
233 |                         QString s_time = time.toString("hh:mm:ss");
234 |                         model->setItem(i, 2, new QStandardItem(s_time));
235 |                         uptime.close();
236 |                         model->item(i, 2)->setTextAlignment(Qt::AlignCenter);
237 |                     }
238 |                 }
239 |                 input.close();
240 |                 // username
241 |                 char filename2[20] = "/proc/";
242 |                 strcat(filename2, ptr->d_name);
243 |                 std::ifstream input2;
244 |                 input2.open(strcat(filename2, "/status"));
245 |                 if (input2.is_open()) {
246 |                     int j = 0;
247 |                     char buffer[100];
248 |                     while (j < 7) {
249 |                         j++;
250 |                         input2.getline(buffer, 100);
251 |                     }
252 |                     std::string s_uid;
253 |                     int uid;
254 |                     input2 >> s_uid >> uid;
255 |                     if (username_dict->find(uid) != username_dict->end()) {
256 |                         std::string user = (*username_dict)[uid];
257 |                         //qDebug() << pid << "\t" << user.c_str();
258 |                         model->setItem(i, 6, new QStandardItem(user.c_str()));
259 |                     }
260 |                     else {
261 |                         model->setItem(i, 6, new QStandardItem("nobody"));
262 |                     }
263 |                     model->item(i, 6)->setTextAlignment(Qt::AlignLeft);
264 |                     if (this->state == MEM) {
265 |                         j = 0;
266 |                         while (j < 9) {
267 |                             j++;
268 |                             input2.getline(buffer, 100);
269 |                         }
270 |                         std::string tmp;
271 |                         int vmsize, vmrss;
272 |                         input2 >> tmp >> vmsize;
273 |                         input2.getline(buffer, 100);
274 |                         input2.getline(buffer, 100);
275 |                         input2.getline(buffer, 100);
276 |                         input2.getline(buffer, 100);
277 |                         input2 >> tmp >> vmrss;
278 |                         float rate = vmrss * 100.0 / this->mem_size;
279 |                         QString temp = tr("%1%").arg(QString::number(rate, 'f', 2));
280 |                         if (temp.length() < 6) {
281 |                             temp = tr("0%1").arg(temp);
282 |                         }
283 |                         model->setItem(i, 1, new QStandardItem(temp));
284 |                         model->setItem(i, 2, new QStandardItem(get_proper_unit(vmsize).c_str()));
285 |                         model->setItem(i, 3, new QStandardItem(get_proper_unit(vmrss).c_str()));
286 |                         model->item(i, 1)->setTextAlignment(Qt::AlignCenter);
287 |                         //model->sort(1, Qt::DescendingOrder);
288 |                     }
289 |                     input2.close();
290 |                 } else {
291 |                     qDebug() << tr("Cannot open status: %1!").arg(ptr->d_name) << endl;
292 |                 }
293 |             } else {
294 |                 qDebug() << tr("Cannot open %1!").arg(ptr->d_name) << endl;
295 |                 i--;
296 |             }
297 |             i++;
298 |         }
299 |     }
300 |     if (this->state == CPU) {
301 |         ui->right_2->setText(tr("进程\t            %1").arg(i));
302 |         ui->right_3->setText(tr("线程\t            %1").arg(total_threads));
303 |     }
304 |     model->sort(1, Qt::DescendingOrder);
305 |     // qDebug() << "now: " << cnt << "last:" << this->num_processes << "rows:" << model->rowCount();
306 |     if (cnt < this->num_processes) {
307 |         int diff= this->num_processes - cnt;
308 |         model->removeRows(model->rowCount() - diff, diff);
309 |     }
310 |     this->num_processes = cnt;
311 | }
312 | 
313 | void MainWindow::on_cpu_button_clicked()
314 | {
315 |     ui->cpu_button->setEnabled(false);
316 |     ui->mem_button->setEnabled(true);
317 |     ui->mem_button->setStyleSheet("background-color:rgb(243,243,243);");
318 |     ui->cpu_button->setStyleSheet("background-color:rgb(108,107,108);color:rgb(255,254,250);");
319 |     this->state = CPU;
320 |     init_table();
321 |     ui->left_1->setText(tr("系统:\t          0.00%"));
322 |     ui->left_2->setText(tr("用户:\t          0.00%"));
323 |     ui->left_3->setText(tr("空闲:\t          0.00%"));
324 |     ui->right_1->setText(tr("总利用率:           0.0%"));
325 |     ui->right_1->setStyleSheet("QLabel {\n	color:rgb(242, 21, 21)\n}");
326 |     ui->frame_center->change_queue();
327 |     get_cpu_stat();
328 |     refocus();
329 | }
330 | 
331 | void MainWindow::on_mem_button_clicked()
332 | {
333 |     ui->mem_button->setEnabled(false);
334 |     ui->cpu_button->setStyleSheet("background-color:rgb(243,243,243);");
335 |     ui->cpu_button->setEnabled(true);
336 |     ui->mem_button->setStyleSheet("background-color:rgb(108,107,108);color:rgb(255,254,250);");
337 |     this->state = MEM;
338 |     init_table();
339 |     ui->left_1->setText(tr("物理内存:      00.00 GB"));
340 |     ui->left_2->setText(tr("已使用内存:  00.00 GB"));
341 |     ui->left_3->setText(tr("可用内存:      00.00 GB"));
342 |     ui->right_1->setText(tr("总使用率:          0.0%"));
343 |     ui->right_2->setText(tr("已缓存文件:  00.0 MB"));
344 |     ui->right_3->setText(tr("已使用的交换: 00 KB"));
345 |     ui->right_1->setStyleSheet("QLabel {\n	color:rgb(242, 21, 21)\n}");
346 |     ui->frame_center->change_queue();
347 |     get_mem_stat();
348 |     refocus();
349 | }
350 | 
351 | void MainWindow::init_table()
352 | {
353 |     // ui->tableView->setSortingEnabled(true);
354 |     switch(state) {
355 |     case CPU:
356 |         model = this->cpu_model;
357 |         ui->tableView->setModel(model);
358 |         // ui->tableView->setModel(this->proxy_model);
359 |         // ui->tableView->sortByColumn(1, Qt::DescendingOrder);
360 |         model->setColumnCount(7);
361 |         model->setHeaderData(0, Qt::Horizontal, "进程名称");
362 |         model->setHeaderData(1, Qt::Horizontal, "  % CPU");
363 |         model->setHeaderData(2, Qt::Horizontal, " CPU时间");
364 |         model->setHeaderData(3, Qt::Horizontal, "    线程");
365 |         model->setHeaderData(4, Qt::Horizontal, "闲置唤醒");
366 |         model->setHeaderData(5, Qt::Horizontal, "      PID");
367 |         model->setHeaderData(6, Qt::Horizontal, "用户");
368 |         ui->tableView->horizontalHeader()->setDefaultAlignment(Qt::AlignLeft);
369 |         model->sort(1, Qt::DescendingOrder);
370 |         break;
371 |     case MEM:
372 |         model = this->mem_model;
373 |         ui->tableView->setModel(model);
374 |         model->setColumnCount(7);
375 |         model->setHeaderData(0, Qt::Horizontal, "进程名称");
376 |         model->setHeaderData(1, Qt::Horizontal, "  % MEM");
377 |         model->setHeaderData(2, Qt::Horizontal, "虚拟内存");
378 |         model->setHeaderData(3, Qt::Horizontal, "物理内存");
379 |         model->setHeaderData(4, Qt::Horizontal, "    线程");
380 |         model->setHeaderData(5, Qt::Horizontal, "      PID");
381 |         model->setHeaderData(6, Qt::Horizontal, "用户");
382 |         ui->tableView->horizontalHeader()->setDefaultAlignment(Qt::AlignLeft);
383 |         model->sort(1, Qt::DescendingOrder);
384 |         break;
385 | 
386 |     default:
387 |         break;
388 |     }
389 |     ui->tableView->verticalHeader()->hide();
390 |     ui->tableView->setColumnWidth(0, 130);
391 |     ui->tableView->horizontalHeader()->setStretchLastSection(true);
392 | }
393 | 
394 | 
395 | 
396 | void MainWindow::on_tableView_clicked(const QModelIndex &index)
397 | {
398 |     int row = index.row();
399 |     this->last_pid = model->item(row, 5)->text().toInt();
400 |     ui->pushButton_3->setEnabled(true);
401 | }
402 | 
403 | void MainWindow::refocus()
404 | {
405 |     if (last_pid == -1) {
406 |         return;
407 |     }
408 |     for (int i = 0; i < model->rowCount(); i++) {
409 |         if (model->item(i, 5)->text().toInt() == last_pid) {
410 |             ui->tableView->setCurrentIndex(model->index(i, 0));
411 |         }
412 |     }
413 | }
414 | 
415 | void MainWindow::on_pushButton_3_clicked()
416 | {
417 |     QMessageBox::StandardButton rb = QMessageBox::question(this, tr("温馨提示"),
418 |                   tr("您确定要退出此进程吗"), QMessageBox::Yes | QMessageBox::No);
419 |     if (rb == QMessageBox::Yes && this->last_pid != -1) {
420 |         kill(last_pid, SIGTERM);
421 |         ui->pushButton_3->setEnabled(false);
422 |         last_pid = -1;
423 |     }
424 | }
425 | 
426 | void MainWindow::on_pushButton_clicked()
427 | {
428 |     Info_dialog info;
429 |     info.exec();
430 | }
431 | 


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339 | 


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