C++中利用多线程实现定时器

使用多线程技术实现了一个简单的定时器类：

 

        /********CTimer.h***********/

 

#ifndef CTIMER_H_ #define CTIMER_H_ #include <Windows.h> class CTimer { public: CTimer(); ~CTimer(); void StartTimer(unsigned int nElapse); void EndTimer(); static DWORD WINAPI ThreadFunc (LPVOID pParam); private: unsigned int m_Elapse; HANDLE m_hThread; }; #endif /********CTimer.cpp***********/ #include <time.h> #include <iostream> #include "CTimer.h" using namespace std; CTimer::CTimer():m_Elapse(0), m_hThread(NULL) { } CTimer::~CTimer() { } void CTimer::StartTimer(unsigned int nElapse) { m_Elapse = nElapse; m_hThread = CreateThread(NULL, 0, ThreadFunc, (LPVOID)(&m_Elapse), 0, NULL); } void CTimer::EndTimer() { CloseHandle(m_hThread); } DWORD WINAPI CTimer::ThreadFunc(LPVOID pParam) { time_t t1, t2; double Diff = 0; int elapse = *((int *)pParam); /*获取系统当前时间*/ t1 = time(NULL); while(1) { /*以秒为单位获取系统当前时间*/ t2 = time(NULL); /*比较第二次获取的时间与第一次的时间是不是间隔了两秒*/ Diff = difftime(t2,t1); /*间隔两秒打印Diff和i*/ if((int)Diff == elapse) { cout<<"Time out!"<<endl; t1 = t2; } } return 0; } /********测试程序************/ #include "CTimer.h" void main() { CTimer timer; timer.StartTimer(1); Sleep(8000); timer.EndTimer(); }