MFC线程优先级程序图示

清疚 2022-11-12 09:50 122阅读 0赞

线程优先级等级描述如下；  
idle      （最低）    THREAD\_PRIORITY\_IDLE  
LOWEST  低    THREAD\_PRIORITY\_LOWEST  
BELOW   低于标准    THREAD\_PRIORITY\_BELOW\_NORMAL  
NORMAL（标准）    THREAD\_PRIORITY\_NORMAL  
ABOVE    高于标准    THREAD\_PRIORITY\_ABOVE\_NORMAL  
HIGHEST （高）    THREAD\_PRIORITY\_HIGHEST  
CRITICAL（最高)    THREAD\_PRIORITY\_TIME\_CRITICAL

Win7，VC6，新建一个对话框工程；添加7个进度条控件；其每个控件的ID为IDC\_PROGRESSx；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70][]

添加一个按钮；添加按钮的单击函数；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 1][]

对话框Cpp文件头部添加如下代码；

static UINT g_uCount1 = 0;
    static UINT g_uCount2 = 0;
    static UINT g_uCount3 = 0;
    static UINT g_uCount4 = 0;          // 各个线程各自的循环计数
    static UINT g_uCount5 = 0;
    static UINT g_uCount6 = 0;
    static UINT g_uCount7 = 0;
    
    CProgressCtrl* g_ptrProgress1 = NULL;
    CProgressCtrl* g_ptrProgress2 = NULL;
    CProgressCtrl* g_ptrProgress3 = NULL;     //各个进度条的指针
    CProgressCtrl* g_ptrProgress4 = NULL;
    CProgressCtrl* g_ptrProgress5 = NULL;
    CProgressCtrl* g_ptrProgress6 = NULL;
    CProgressCtrl* g_ptrProgress7 = NULL;
    
    UINT Thread1(LPVOID)
    {
    	while (g_uCount1 < 100000000 )
    	{
    		g_uCount1++;
    		if (g_uCount1 % 10000000 == 0)
    		{
    			if (g_ptrProgress1)
    			{
    				g_ptrProgress1->SetPos(g_uCount1/1000000);
    			}	
    		}	
    	}
    
    	return 0;
    }
    
    UINT Thread2(LPVOID)
    {
    	while (g_uCount2 < 100000000 )
    	{
    		g_uCount2++;
    		if (g_uCount2 % 10000000 == 0)
    		{
    			if (g_ptrProgress2)
    			{
    				g_ptrProgress2->SetPos(g_uCount2/1000000);
    			}	
    		}	
    	}
    
    	return 0;
    }
    
    UINT Thread3(LPVOID)
    {
    	while (g_uCount3 < 100000000 )
    	{
    		g_uCount3++;
    		if (g_uCount3 % 10000000 == 0)
    		{
    			if (g_ptrProgress3)
    			{
    				g_ptrProgress3->SetPos(g_uCount3/1000000);
    			}	
    		}	
    	}
    
    	return 0;
    }
    
    UINT Thread4(LPVOID)
    {
    	while (g_uCount4 < 100000000 )
    	{
    		g_uCount4++;
    		if (g_uCount4 % 10000000 == 0)
    		{
    			if (g_ptrProgress4)
    			{
    				g_ptrProgress4->SetPos(g_uCount4/1000000);
    			}	
    		}	
    	}
    
    	return 0;
    }
    
    UINT Thread5(LPVOID)
    {
    	while (g_uCount5 < 100000000 )
    	{
    		g_uCount5++;
    		if (g_uCount5 % 10000000 == 0)
    		{
    			if (g_ptrProgress5)
    			{
    				g_ptrProgress5->SetPos(g_uCount5/1000000);
    			}	
    		}	
    	}
    
    	return 0;
    }
    
    UINT Thread6(LPVOID)
    {
    	while (g_uCount6 < 100000000 )
    	{
    		g_uCount6++;
    		if (g_uCount6 % 10000000 == 0)
    		{
    			if (g_ptrProgress6)
    			{
    				g_ptrProgress6->SetPos(g_uCount6/1000000);
    			}	
    		}	
    	}
    
    	return 0;
    }
    
    UINT Thread7(LPVOID)
    {
    	while (g_uCount7 < 100000000 )
    	{
    		g_uCount7++;
    		if (g_uCount7 % 10000000 == 0)
    		{
    			if (g_ptrProgress7)
    			{
    				g_ptrProgress7->SetPos(g_uCount7/1000000);
    			}	
    		}	
    	}
    
    	return 0;
    }

代码分别是：每个线程各自使用的循环计数，每个进度条的指针定义，7个线程函数；  在每个线程函数根据计数设置不同的进度条的值；

在对话框的 OnInitDialog() 成员函数，在    “// TODO: Add extra initialization here”    这句之后，添加如下代码；根据进度条控件的ID获取其指针；

g_ptrProgress1 = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS1);
    	g_ptrProgress2 = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS2);
    	g_ptrProgress3 = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS3);
    	g_ptrProgress4 = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS4);
    	g_ptrProgress5 = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS5);
    	g_ptrProgress6 = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS6);
    	g_ptrProgress7 = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS7);

在单击处理函数，使用AfxBeginThread按照不同线程优先级来启动线程；AfxBeginThread函数的第一个参数是创建的线程的执行函数；

void CThrpriDlg::OnGo() 
    {
    	// TODO: Add your control notification handler code here
    	//创建7个不同优先级别的线程
    	AfxBeginThread(Thread1,NULL,THREAD_PRIORITY_TIME_CRITICAL);	
    	AfxBeginThread(Thread2,NULL,THREAD_PRIORITY_HIGHEST);	
    	AfxBeginThread(Thread3,NULL,THREAD_PRIORITY_ABOVE_NORMAL);	
    	AfxBeginThread(Thread4,NULL,THREAD_PRIORITY_NORMAL);	
    	AfxBeginThread(Thread5,NULL,THREAD_PRIORITY_BELOW_NORMAL);	
    	AfxBeginThread(Thread6,NULL,THREAD_PRIORITY_LOWEST);	
    	AfxBeginThread(Thread7,NULL,THREAD_PRIORITY_IDLE);	
    }

运行如下图；开始，

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 2][]

运行到某个时刻，

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 3][]

结束；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 4][]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 1]: /images/20221022/aecb875126094f8e9a7bae1ce11e53e4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 2]: /images/20221022/52657302408340f4bd13406060710835.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 3]: /images/20221022/bf2f23ad1c0a4612b04715a2693c81ac.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 4]: /images/20221022/7d494fd6dfe2435f96b00d626e120cf8.png