vc++多线程编程

来源：互联网发布：linux lamp环境搭建编辑：程序博客网时间：2024/06/18 15:05
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。MFC2.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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