本文主要向大家介绍了VC编程之vc++多线程编程，通过具体的内容向大家展示，希望对大家学习VC编程有所帮助。

1.CWinApp是一个i额用户界面线程对象，派生自CWinThread，处理用户产生的事件和消息。

MFC

2.AfxBeginThread函数创建和初始化CWinThread对象，启动并返回地址。

3.

pThread = new CWinThread();

pThread->m_bAutoDelete = FALSE;

pThread = AfxBeginThread(StartAndCloseThreadProc, NULL);

4.

挂起线程

pThread->SuspendThread();

重新启动线程

pThread->ResumeThread();

5.

线程的同步

11.事件对象

#include "stdafx.h"

#include <stdio.h>

#include <stdlib.h>

#include <windows.h>

#include "process.h"

DWORD WINAPI ThreadProc1(LPVOID lpParam);

DWORD WINAPI ThreadProc2(LPVOID lpParam);

int iGolbalCount=0;

int iMax = 12;

HANDLE hEvent;

int main(int argc, char* argv[])

{

HANDLE hThread1, hThread2;

hEvent=CreateEvent(NULL,FALSE,FALSE,LPCTSTR("iGolbalCount"));

if (hEvent == NULL)

{

printf("创建事件对象失败！\r\n");

return 0;

}

SetEvent(hEvent);

hThread1=CreateThread(NULL,0,ThreadProc1,NULL,0,NULL);

hThread2=CreateThread(NULL,0,ThreadProc2,NULL,0,NULL);

Sleep(40000);

CloseHandle(hEvent); //关闭事件对象句柄

printf("主线程结束!\n");

system("pause");

return 0;

}

DWORD WINAPI ThreadProc1(LPVOID lpParam)

{

while (TRUE)

{

WaitForSingleObject(hEvent,INFINITE);

if (iGolbalCount < iMax)

{

printf("这里是线程1，iGolbalCount=%d\r\n", iGolbalCount++);

SetEvent(hEvent);

}

else

{

SetEvent(hEvent);

break;

}

Sleep(10);

}

return 0;

}

DWORD WINAPI ThreadProc2(LPVOID lpParameter)

{

while (TRUE)

{

WaitForSingleObject(hEvent,INFINITE);

if (iGolbalCount < iMax)

{

printf("这里是线程2，iGolbalCount=%d\r\n", iGolbalCount++);

SetEvent(hEvent);

}

else

{

SetEvent(hEvent);

break;

}

Sleep(10);

}

return 0;

}

22.利用临界区

DWORD WINAPI ThreadProc1(LPVOID lpParam);

DWORD WINAPI ThreadProc2(LPVOID lpParam);

int iGolbalCount=0;

int iMax = 12;

CRITICAL_SECTION cs;

int main(int argc, char* argv[])

{

HANDLE hThread1, hThread2;

InitializeCriticalSection(&cs);

hThread1=CreateThread(NULL,0,ThreadProc1,NULL,0,NULL);

hThread2=CreateThread(NULL,0,ThreadProc2,NULL,0,NULL);

Sleep(50000);

DeleteCriticalSection(&cs); //删除临界区对象

printf("主线程结束!\n");

return 0;

}

DWORD WINAPI ThreadProc1(LPVOID lpParam)

{

while (TRUE)

{

EnterCriticalSection(&cs);

if (iGolbalCount < iMax)

{

printf("这里是线程1，iGolbalCount=%d\r\n", iGolbalCount++);

LeaveCriticalSection(&cs);

}

else

{

LeaveCriticalSection(&cs);

break;

}

Sleep(10);

}

return 0;

}

33.利用信号量

DWORD WINAPI ThreadProc1(LPVOID lpParam);

DWORD WINAPI ThreadProc2(LPVOID lpParam);

int iGolbalCount=0;

int iMax = 12;

int cMax = 1;

HANDLE hSemaphore;

int main(int argc, char* argv[])

{

HANDLE hThread1, hThread2;

hSemaphore = CreateSemaphore( NULL, cMax, cMax, NULL);

if (hSemaphore == NULL)

{

printf("创建信号量对象失败");

return 0;

}

hThread1=CreateThread(NULL,0,ThreadProc1,NULL,0,NULL);

hThread2=CreateThread(NULL,0,ThreadProc2,NULL,0,NULL);

Sleep(5000);

printf("主线程结束!");

system("pause");

return 0;

}

DWORD WINAPI ThreadProc1(LPVOID lpParam)

{

while (TRUE)

{

DWORD dwWaitResult = WaitForSingleObject(hSemaphore, 0L);

if (dwWaitResult == WAIT_OBJECT_0)

{

if (iGolbalCount < iMax)

{

printf("这里是线程1，iGolbalCount=%d\r\n", iGolbalCount++);

ReleaseSemaphore(hSemaphore, 1, NULL);

}

else

{

ReleaseSemaphore(hSemaphore, 1, NULL);

break;

}

}

Sleep(10);

}

return 0;

}

44.利用互斥对象

DWORD WINAPI ThreadProc1(LPVOID lpParam);

DWORD WINAPI ThreadProc2(LPVOID lpParam);

int iGolbalCount=0;

int iMax = 12;

HANDLE hMutex;

int main(int argc, char* argv[])

{

HANDLE hThread1, hThread2;

hThread1=CreateThread(NULL,0,ThreadProc1,NULL,0,NULL);

hThread2=CreateThread(NULL,0,ThreadProc2,NULL,0,NULL);

hMutex=CreateMutex(NULL,TRUE,LPCTSTR("iGolbalCount"));

if (hMutex == NULL)

{

printf("创建互斥对象失败！\r\n");

return 0;

}

WaitForSingleObject(hMutex,INFINITE);

ReleaseMutex(hMutex);

ReleaseMutex(hMutex);

Sleep(5000);

printf("主线程结束!\n");

return 0;

}

DWORD WINAPI ThreadProc1(LPVOID lpParam)

{

while (TRUE)

{

WaitForSingleObject(hMutex,INFINITE);

if (iGolbalCount < iMax)

printf("这里是线程1，iGolbalCount=%d\r\n", iGolbalCount++);

else

break;

ReleaseMutex(hMutex);

Sleep(10);

}

return 0;

}

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