【Qt入門實踐】Qt之哲學家問題（linux 多線程）
阿新 • • 發佈：2017-06-12
avi .cpp private 1=1 endif debug 問題 tel pub
maindesttop.h
第一個線程源代碼：
第二線程頭文件：
源程序：
線程三，頭文件：
源文件：
線程4頭文件：
源文件：
線程5頭文件：
源文件：
轉載請註明出處：http://blog.csdn.net/feng1790291543
linux多線程實現哲學家問題，依據哲學家吃飯、拿筷子、放下筷子......
首先，主線程使用Qt下的GUI的簡單一個button控制即可了
maindesttop.cpp
#include "maindesttop.h"
#include "ui_maindesttop.h"
QMutex mutex01;
QMutex mutex02;
QMutex mutex03;
QMutex mutex04;
QMutex mutex05;
int n1=1;
int n2=1;
int n3=1;
int n4=1;
int n5=1;
QWaitCondition waitcondition001;
QWaitCondition waitcondition002;
QWaitCondition waitcondition003;
QWaitCondition waitcondition004;
QWaitCondition waitcondition005;
MainDestTop::MainDestTop(QWidget *parent)
: QWidget(parent), ui(new Ui::MainDestTop)
{
ui->setupUi(this);
}
MainDestTop::~MainDestTop()
{
delete ui;
}
void MainDestTop::on_pushButtonStart_clicked()
{
pro001=new Proferssor001;
pro002=new Professor002;
pro003=new Professor003;
pro004=new Professor004;
pro005=new Professor005;
pro001->start();
pro002->start();
pro003->start();
pro004->start();
pro005->start();
return ;
}
void MainDestTop::StopThread()
{
pro001->quit();
pro001->wait();
pro001->deleteLater();
delete pro001;
pro001=NULL;
pro002->quit();
pro002->wait();
pro002->deleteLater();
delete pro002;
pro002=NULL;
pro003->quit();
pro003->wait();
pro003->deleteLater();
delete pro003;
pro003=NULL;
pro004->quit();
pro004->wait();
pro004->deleteLater();
delete pro004;
pro004=NULL;
pro005- >quit();
pro005->wait();
pro005->deleteLater();
delete pro005;
pro005=NULL;
}
maindesttop.h
#ifndef MAINDESTTOP_H
#define MAINDESTTOP_H
#include <QtGui/QWidget>
#include <QtCore>
#include <QMutex>
#include "proferssor001.h"
#include "professor002.h"
#include "professor003.h"
#include "professor004.h"
#include "professor005.h"
namespace Ui
{
class MainDestTop;
}
class MainDestTop : public QWidget
{
Q_OBJECT
public:
MainDestTop(QWidget *parent = 0);
~MainDestTop();
void StopThread();
private:
Ui::MainDestTop *ui;
Proferssor001 *pro001;
Professor002 *pro002;
Professor003 *pro003;
Professor004 *pro004;
Professor005 *pro005;
private slots:
void on_pushButtonStart_clicked();
};
#endif // MAINDESTTOP_H
其次。子線程源代碼例如以下：
#ifndef PROFERSSOR001_H
#define PROFERSSOR001_H
#include <QThread>
#include <QtCore>
class Proferssor001 : public QThread
{
public:
Proferssor001();
void run();
};
#endif // PROFERSSOR001_H
第一個線程源代碼：
#include "proferssor001.h"
/****************
proferssor001---->A proferssor002---->B proferssor003--->C proferssor004---->D proferssor005---->E
資源奪取: A--->1/5 B--->2/1 C--->3/2 D--->4/3 E--->5/4
******************/
extern QMutex mutex01;
extern QMutex mutex02;
extern QMutex mutex03;
extern QMutex mutex04;
extern QMutex mutex05;
extern int n1;
extern int n2;
extern int n3;
extern int n4;
extern int n5;
extern QWaitCondition waitcondition001;
extern QWaitCondition waitcondition002;
extern QWaitCondition waitcondition003;
extern QWaitCondition waitcondition004;
extern QWaitCondition waitcondition005;
Proferssor001::Proferssor001()
{
}
void Proferssor001::run()
{
while(1)
{
mutex01.lock();
mutex05.lock();
while((n1+n5)<2)
{
mutex05.unlock();
qDebug()<<"proferssor001哲學家沒左邊筷子~";
mutex01.unlock();
qDebug()<<"proferssor001哲學家沒右邊筷子~";
qDebug()<<"proferssor001$$$$$$$$$$哲學家開始歇息....";
waitcondition001.wait(&mutex01);
waitcondition005.wait(&mutex05);
continue ;
}
qDebug()<<"proferssor001$$$$$$$$$$哲學家開始吃飯~";
n1--;
n5--;
mutex05.unlock();
n5=(n5+1);
qDebug()<<"proferssor001$$$$$$$$$$哲學家放下左邊筷子~";
msleep(2);
mutex01.unlock();
n1=(n1+1);
qDebug()<<"proferssor001$$$$$$$$$$哲學家放下右邊筷子~";
msleep(2);
}
return ;
}
第二線程頭文件：
#ifndef PROFESSOR002_H
#define PROFESSOR002_H
#include <QThread>
#include <QtCore>
class Professor002 : public QThread
{
public:
Professor002();
void run();
};
#endif // PROFESSOR002_H
源程序：
#include "professor002.h"
/****************
proferssor001---->A proferssor002---->B proferssor003--->C proferssor004---->D proferssor005---->E
資源奪取: A--->1/5 B--->2/1 C--->3/2 D--->4/3 E--->5/4
******************/
extern QMutex mutex01;
extern QMutex mutex02;
extern QMutex mutex03;
extern QMutex mutex04;
extern QMutex mutex05;
extern int n1;
extern int n2;
extern int n3;
extern int n4;
extern int n5;
extern QWaitCondition waitcondition001;
extern QWaitCondition waitcondition002;
extern QWaitCondition waitcondition003;
extern QWaitCondition waitcondition004;
extern QWaitCondition waitcondition005;
Professor002::Professor002()
{
}
void Professor002::run()
{
while(1)
{
mutex02.lock();
mutex01.lock();
while((n1+n2)<2)
{
mutex01.unlock();
qDebug()<<"proferssor002哲學家沒左邊筷子~";
mutex02.unlock();
qDebug()<<"proferssor002哲學家沒右邊筷子~";
qDebug()<<"proferssor002&&&&&&&&&哲學家開始歇息....";
waitcondition002.wait(&mutex02);
waitcondition001.wait(&mutex01);
continue ;
}
qDebug()<<"proferssor002&&&&&&&&&哲學家開始吃飯~";
n1--;
n2--;
mutex01.unlock();
n1=(n1+1);
qDebug()<<"proferssor002&&&&&&&&&哲學家放下左邊筷子~";
msleep(2);
mutex02.unlock();
n2=(n2+1);
qDebug()<<"proferssor002&&&&&&&&&哲學家放下右邊筷子~";
msleep(2);
}
return ;
}
線程三，頭文件：
#ifndef PROFESSOR003_H
#define PROFESSOR003_H
#include <QThread>
#include <QtCore>
class Professor003 : public QThread
{
public:
Professor003();
void run();
};
#endif // PROFESSOR003_H
源文件：
#include "professor003.h"
/****************
proferssor001---->A proferssor002---->B proferssor003--->C proferssor004---->D proferssor005---->E
資源奪取: A--->1/5 B--->2/1 C--->3/2 D--->4/3 E--->5/4
******************/
extern QMutex mutex01;
extern QMutex mutex02;
extern QMutex mutex03;
extern QMutex mutex04;
extern QMutex mutex05;
extern int n1;
extern int n2;
extern int n3;
extern int n4;
extern int n5;
extern QWaitCondition waitcondition001;
extern QWaitCondition waitcondition002;
extern QWaitCondition waitcondition003;
extern QWaitCondition waitcondition004;
extern QWaitCondition waitcondition005;
Professor003::Professor003()
{
}
void Professor003::run()
{
while(1)
{
mutex03.lock();
mutex02.lock();
while((n2+n3)<2)
{
mutex02.unlock();
qDebug()<<"proferssor003哲學家沒左邊筷子~";
mutex03.unlock();
qDebug()<<"proferssor003哲學家沒右邊筷子~";
qDebug()<<"proferssor003******哲學家開始歇息....";
waitcondition003.wait(&mutex03);
waitcondition002.wait(&mutex02);
continue ;
}
qDebug()<<"proferssor003******哲學家開始吃飯~";
n2--;
n3--;
mutex02.unlock();
n2=(n2+1);
qDebug()<<"proferssor003******哲學家放下左邊筷子~";
msleep(2);
mutex03.unlock();
n3=(n3+1);
qDebug()<<"proferssor003******哲學家放下右邊筷子~";
msleep(2);
}
return ;
}
線程4頭文件：
#ifndef PROFESSOR004_H
#define PROFESSOR004_H
#include <QThread>
#include <QtCore>
class Professor004 : public QThread
{
public:
Professor004();
void run();
};
#endif // PROFESSOR004_H
源文件：
#include "professor004.h"
/****************
proferssor001---->A proferssor002---->B proferssor003--->C proferssor004---->D proferssor005---->E
資源奪取: A--->1/5 B--->2/1 C--->3/2 D--->4/3 E--->5/4
******************/
extern QMutex mutex01;
extern QMutex mutex02;
extern QMutex mutex03;
extern QMutex mutex04;
extern QMutex mutex05;
extern int n1;
extern int n2;
extern int n3;
extern int n4;
extern int n5;
extern QWaitCondition waitcondition001;
extern QWaitCondition waitcondition002;
extern QWaitCondition waitcondition003;
extern QWaitCondition waitcondition004;
extern QWaitCondition waitcondition005;
Professor004::Professor004()
{
}
void Professor004::run()
{
while(1)
{
mutex04.lock();
mutex03.lock();
while((n4+n3)<2)
{
mutex03.unlock();
qDebug()<<"proferssor004哲學家沒左邊筷子~";
mutex04.unlock();
qDebug()<<"proferssor004哲學家沒右邊筷子~";
qDebug()<<"proferssor004----哲學家開始歇息....";
waitcondition004.wait(&mutex04);
waitcondition003.wait(&mutex03);
continue ;
}
qDebug()<<"proferssor004----哲學家開始吃飯~";
n3--;
n4--;
mutex03.unlock();
n3=(n3+1);
qDebug()<<"proferssor004----哲學家放下左邊筷子~";
msleep(2);
mutex04.unlock();
n4=(n4+1);
qDebug()<<"proferssor004----哲學家放下右邊筷子~";
msleep(2);
}
return ;
}
線程5頭文件：
#ifndef PROFESSOR005_H
#define PROFESSOR005_H
#include <QThread>
#include <QtCore>
class Professor005 : public QThread
{
public:
Professor005();
void run();
};
#endif // PROFESSOR005_H
源文件：
#include "professor005.h"
/****************
proferssor001---->A proferssor002---->B proferssor003--->C proferssor004---->D proferssor005---->E
資源奪取: A--->1/5 B--->2/1 C--->3/2 D--->4/3 E--->5/4
******************/
extern QMutex mutex01;
extern QMutex mutex02;
extern QMutex mutex03;
extern QMutex mutex04;
extern QMutex mutex05;
extern int n1;
extern int n2;
extern int n3;
extern int n4;
extern int n5;
extern QWaitCondition waitcondition001;
extern QWaitCondition waitcondition002;
extern QWaitCondition waitcondition003;
extern QWaitCondition waitcondition004;
extern QWaitCondition waitcondition005;
Professor005::Professor005()
{
}
void Professor005::run()
{
while(1)
{
mutex05.lock();
mutex04.lock();
while((n4+n5)<2)
{
mutex04.unlock();
qDebug()<<"proferssor005哲學家沒左邊筷子~";
mutex05.unlock();
qDebug()<<"proferssor005哲學家沒右邊筷子~";
qDebug()<<"proferssor005====哲學家開始歇息....";
waitcondition005.wait(&mutex05);
waitcondition004.wait(&mutex04);
continue ;
}
qDebug()<<"proferssor005====哲學家開始吃飯~";
n4--;
n5--;
mutex04.unlock();
n4=(n4+1);
qDebug()<<"proferssor005====哲學家放下左邊筷子~";
msleep(2);
mutex05.unlock();
n5=(n5+1);
qDebug()<<"proferssor005====哲學家放下右邊筷子~";
msleep(2);
}
return ;
}
執行結果：
資源免費下載：http://download.csdn.net/detail/feng1790291543/7324039
【Qt入門實踐】Qt之哲學家問題（linux 多線程）