封装一个Window线程类

概述

封装一个简单的线程类，线程函数结束后线程不会自动退出，而是阻塞到了事件函数上，当再次运行该线程时，会触发事件解除阻塞运行函数，而不会重新创建线程。想要使线程退出，必须手动设置线程才会退出。

共有两个基类CThread和CThreadFunc，其中CThread是主要的线程类，它保存线程句柄和线程ID等属性，CThreadFunc是线程处理函数类，处理线程的具体工作。

实现的方法有两种，一种是直接继承CThread，并重写它的Run函数。另一种是先实例化CThread thread，接着创建一个线程函数类继承CThreadFunc，并重写Run函数。然后调用thread的函数AddWorkThread()把线程函数对象添加到线程中

源码

CThread.h

#include <stdio.h>  #include <process.h>  #include <windows.h>#include <stdlib.h>#include <iostream>#include "CThreadFunc.h"class CThread{public:CThread();~CThread();//开始线程bool Start();//阻塞等待子线程结束void join(int timeout = -1);//运行函数virtual void Run();//设置线程退出void SetThreadEnd();//添加工作线程类void AddWorkThread(CThreadFunc *cThreadFunc);//激活线程void CThread::Resume();//挂起线程void CThread::Suspend();private:static unsigned int WINAPI StaticThreadFunc(void *arg);private:unsigned int m_ThreadID;//线程IDchar *m_Name;//线程名称HANDLE m_Handle;//线程句柄bool m_Run;//线程是否正在运行bool m_isEnd;//是否结束线程CThreadFunc *m_pThreadFunc;//线程函数类HANDLE  g_hThreadEvent;//事件};

CThread.cpp

#include "CThread.h"CThread::CThread(){//线程句柄m_Handle = (HANDLE)_beginthreadex(NULL, 0, StaticThreadFunc, this, 0, &m_ThreadID);m_ThreadID = -1;//线程IDm_Name = NULL;//线程名称m_Run = false;//线程是否运行m_pThreadFunc = NULL;//线程函数类//初始化事件g_hThreadEvent = CreateEvent(NULL, FALSE, FALSE, NULL);}CThread::~CThread(){}unsigned int CThread::StaticThreadFunc(void *arg){CThread *thread = (CThread *)arg;while (true){thread->m_Run = false;WaitForSingleObject(thread->g_hThreadEvent, INFINITE); //等待事件被触发 thread->m_Run = true;if (thread->m_pThreadFunc != NULL){thread->m_pThreadFunc->Run();}else{thread->Run();//线程处理函数}if (thread->m_isEnd)//是否推出线程{break;}}return 0;}//开始线程bool CThread::Start(){//如果线程正在运行则返回if (m_Run || NULL == m_Handle){return -1;}m_Run = true;//重置标志位SetEvent(g_hThreadEvent);//触发事件 return m_Run;}//阻塞等待子线程结束void CThread::join(int timeout){if (NULL == m_Handle || !m_Run){return;}if (timeout <= 0){timeout = INFINITE;}//阻塞等待线程结束::WaitForSingleObject(m_Handle, timeout);}//设置线程退出void CThread::SetThreadEnd(){m_isEnd = true;}//添加工作线程类void CThread::AddWorkThread(CThreadFunc *cThreadFunc){m_pThreadFunc = cThreadFunc;//线程函数类}//激活线程void CThread::Resume(){if (NULL == m_Handle || !m_Run){return;}::ResumeThread(m_Handle);}//挂起线程void CThread::Suspend(){if (NULL == m_Handle || m_Run){return;}::SuspendThread(m_Handle);}//运行函数void CThread::Run(){}

CThreadFunc.h

#pragma onceclass CThreadFunc{public:CThreadFunc();~CThreadFunc();virtual void Run() = 0;};

CThreadFunc.cpp

#include "CThreadFunc.h"CThreadFunc::CThreadFunc(){}CThreadFunc::~CThreadFunc(){}

方法一

#include <stdio.h>#include "CThread.h"#include "CThreadFunc.h"class thread : public CThread{public:thread(){}~thread(){}virtual void Run(){int i = 5;while (i){Sleep(1000);std::cout << "hello world\n";i--;}}};int main(void){thread *t = new thread;t->Start();t->SetThreadEnd();t->join();std::cout << "子线程结束\n";getchar();return 0;}

方法二

#include "CThread.h"#include "CThreadFunc.h"class Func :public CThreadFunc{public:virtual void Run(){int i = 5;while (i){Sleep(1000);std::cout << "object Thread\n";i--;}}};int main(void){CThread *t = new thread;Func *f = new Func;t->AddWorkThread(f);t->Start();t->SetThreadEnd();t->join();std::cout << "子线程结束\n";getchar();return 0;}