在做项目的过程中有时候为了提升效率，用了多线程的方法来对任务进行分割和应用，后来发现，采用线程池的方法能更好的利用线程资源来计算任务，网上有很多关于如何运行线程池的例子，msdn上也给出了对应的例子：https://msdn.microsoft.com/en-us/library/windows/desktop/ms686980(v=vs.85).aspx
感兴趣的话大家可以去看看，这里我给出一个简单的demo，利用线程池单次调用多次调用，例子如下：
- #include<Windows.h>
- #include<iostream>
- #include<cstdlib>
- using namespace std;
- #define THREAD_NUM 10
- struct tempStruct
- {
- int a;
- int b;
- };
- VOID CALLBACK SimpleCallback(PTP_CALLBACK_INSTANCE Instance,void* Context);
- VOID CALLBACK WorkCallbackTemp(PTP_CALLBACK_INSTANCE Instance, void* Context, PTP_WORK Work);
- void main()
- {
- PTP_WORK tpWork[THREAD_NUM];
- tempStruct transferStruct[THREAD_NUM];
- for ( int i = 0; i< THREAD_NUM; i++ )
- {
- transferStruct[i].a = i;
- transferStruct[i].b = i+1;
- }
- //单次工作提交
- TrySubmitThreadpoolCallback(SimpleCallback,&transferStruct[2],NULL);
- for ( int i = 0; i< THREAD_NUM; i++ )
- tpWork[i] = CreateThreadpoolWork(WorkCallbackTemp,&transferStruct[i],NULL);
- //提交工作
- for ( int i = 0; i< THREAD_NUM; i++ )
- SubmitThreadpoolWork(tpWork[i]);
- //等待工作结束
- for ( int i = 0; i< THREAD_NUM; i++ )
- WaitForThreadpoolWorkCallbacks(tpWork[i],false);
- //关闭工作对象
- for ( int i = 0; i< THREAD_NUM; i++ )
- CloseThreadpoolWork(tpWork[i]);
- system("pause");
- }
- VOID CALLBACK SimpleCallback(PTP_CALLBACK_INSTANCE Instance,void* Context)
- {
- tempStruct *pt = (tempStruct *)Context;
- int pruduct = pt->a * pt->b;
- cout <<"Simple struct a: "<<pt->a<<" struct_temp.b: "<<pt->b<<" pruduct: "<<pruduct<<endl;
- }
- VOID CALLBACK WorkCallbackTemp(PTP_CALLBACK_INSTANCE Instance, void* Context, PTP_WORK Work)
- {
- tempStruct *pt = (tempStruct *)Context;
- int sum = pt->a + pt->b;
- cout <<"Work struct a: "<<pt->a<<" struct_temp.b: "<<pt->b<<" sum: "<<sum<<endl;
- }
PS有个网站的教程写得很好，收益很多大家也可以去看看：http://www.cnblogs.com/kzloser/archive/2013/03/11/2909221.html
做个mark,希望对需要的朋友有帮助！
