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简单的C++线程类实现, windows平台

發(fā)布時間:2023/12/9 c/c++ 42 豆豆
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一個抽象的線程基類, 再來個具體的線程類并實現(xiàn)相關(guān)接口,再寫個主函數(shù)來調(diào)用下。上代碼:

Thread.h

/*Windows平臺線程類實現(xiàn)開發(fā)環(huán)境: Win7_x64 + VC2012 */ #ifndef __THREAD_H__ #define __THREAD_H__#pragma once#include <string> #include <windows.h>/*1. 線程基類, 要創(chuàng)建新的線程類, 只需要繼承此類并實現(xiàn)相關(guān)接口2. 要開啟線程并運行只需要調(diào)用Start()函數(shù)3. 未完善地方: 應(yīng)該寫個虛函數(shù)Stop(), 當(dāng)線程過程在運行時可以設(shè)置下運行標(biāo)志變量讓線程退出循環(huán)過程, 再作些清理工作, 避免暴力終止線程。 */ class CThread // 抽象的線程基類 { public:CThread(const std::string threadName = "noNamed");virtual ~CThread();virtual void Run() = 0; // 線程執(zhí)行過程virtual bool Start(bool bSuspended/* = false*/);void Join(int timeout = -1); // 等待超時時間為負(fù)時, 表示無限等待void Resume(); // 恢復(fù)掛起的線程void Suspend(); // 掛起線程bool Terminate(unsigned long exitCode); // 結(jié)束線程unsigned int GetThreadID(); // 獲取線程IDstd::string GetThreadName();void SetThreadName(std::string threadName);private:bool CreateThread(bool bSuspended = false);// 開始運行線程static unsigned int WINAPI StaticThreadFunc(void* arg); // 線程函數(shù)protected:HANDLE m_handle;std::string m_threadName;unsigned int m_threadID;volatile bool m_bRun; // 表明線程是否已成功創(chuàng)建(實際上與m_handle含義相同了) };#endif


Thread.cpp:

#include <iostream> #include <process.h> #include "Thread.h"CThread::CThread(const std::string threadName): m_threadName(threadName), m_threadID(0), m_bRun(false) { }CThread::~CThread() {printf("~CThread()\n"); }bool CThread::Start(bool bSuspend/* = false*/) // 創(chuàng)建線程并運行(默認(rèn))或掛起 {m_bRun = CreateThread(bSuspend);return m_bRun; }bool CThread::CreateThread(bool bSuspend/* = false*/) // 創(chuàng)建線程并運行(默認(rèn))或掛起 {if(!m_bRun){if(bSuspend)m_handle = (HANDLE)_beginthreadex(NULL, 0, StaticThreadFunc, this, CREATE_SUSPENDED, &m_threadID);elsem_handle = (HANDLE)_beginthreadex(NULL, 0, StaticThreadFunc, this, 0, &m_threadID);m_bRun = (NULL != m_handle);}return m_bRun; }void CThread::Join(int timeout/* = -1*/) // 等待超時時間(毫秒)為負(fù)時, 表示無限等待 {if(m_handle && m_bRun){if(timeout < 0)timeout = INFINITE;::WaitForSingleObject(m_handle, timeout);} }void CThread::Resume() // 恢復(fù)掛起的線程 {if(m_handle && m_bRun)::ResumeThread(m_handle); }void CThread::Suspend() // 掛起線程 {if(m_handle && m_bRun)::SuspendThread(m_handle); }bool CThread::Terminate(unsigned long exitCode) // 結(jié)束線程 {if(m_handle && m_bRun){if(::TerminateThread(m_handle, exitCode)){::CloseHandle(m_handle);m_handle = NULL;m_bRun = false;return true;}}return false; }unsigned int CThread::GetThreadID() {return m_threadID; }std::string CThread::GetThreadName() {return m_threadName; }void CThread::SetThreadName(std::string threadName) {m_threadName = threadName; }unsigned int CThread::StaticThreadFunc(void* arg) // 線程函數(shù) {CThread* pThread = (CThread*)arg; // 取得線程類指針pThread->Run(); // 執(zhí)行線程過程函數(shù)return 0; }


Thread1.h

#ifndef __THREAD1_H__ #define __THREAD1_H__#pragma once#include "Thread.h"/*1. 要創(chuàng)建一個新線程類時只需要繼承CThread, 然后在Run()中實現(xiàn)自己的線程過程(Run()) */ class CThread1: public CThread // 線程類1 { public:CThread1(const std::string threadName = "noNamed");virtual ~CThread1(void);bool Start(bool bSuspended/* = false*/);virtual void Run(); };#endif


Thread1.cpp

#include <iostream> #include "Thread1.h"CThread1::CThread1(const std::string threadName): CThread(threadName) {}CThread1::~CThread1() {printf("~CThread1()\n"); }bool CThread1::Start(bool bSuspended/* = false*/) {// todo: 此處可添加一些初始化代碼return CThread::Start(bSuspended); }void CThread1::Run() {int cnt = 0;while(cnt <= 10){std::cout << "Hello " << m_threadName << "::Run(): " << cnt++ << std::endl;Sleep(200);} }


main.cpp

#define _CRT_SECURE_NO_WARNINGS#include <iostream> #include "Thread1.h"#define N 15int main(int argc, char* argv[]) {char buf[20] = {0};CThread* t[N] = {NULL};for(int i = 0; i < N; i++){sprintf(buf, "Thread%d", i+1);t[i] = new CThread1(buf);t[i]->Start(true);std::cout << t[i]->GetThreadName() << ": " << t[i]->GetThreadID() << std::endl;t[i]->Resume();}for(int i = 0; i < N; i++)t[i]->Join();return 0; }


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