VC ++ 利用系統函數 QueueUserWorkItem 實作線程例子

VC ++ 利用系統函數 QueueUserWorkItem 實作多線程例子

#include <iostream>
#include <assert.h>
#include <Windows.h>
#include <string>
using namespace std;
DWORD WINAPI TestThreadPool1(PVOID pContext);
DWORD WINAPI TestThreadPool2(PVOID pContext);
DWORD WINAPI TestThreadPool3(PVOID pContext);

CRITICAL_SECTION g_cs;

int main(int argc, char * argv[])
{

	CompleteEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
	InitializeCriticalSection(&g_cs);   

	QueueUserWorkItem(TestThreadPool1, L"Hello World", WT_EXECUTEINLONGTHREAD);
	QueueUserWorkItem(TestThreadPool2, L"Hello World", WT_EXECUTEINLONGTHREAD);
	QueueUserWorkItem(TestThreadPool3, L"Hello World", WT_EXECUTEINLONGTHREAD);
	WaitForSingleObject(CompleteEvent, INFINITE);
	DeleteCriticalSection(&g_cs);   
	CloseHandle(CompleteEvent);
	//getchar();
	return 0;
}

DWORD WINAPI TestThreadPool1(PVOID pContext)
{
    //Sleep(1000);
	for(int i=0;i<=100;i++)
	{
		EnterCriticalSection(&g_cs);
		cout<<"One Thread is : "<<i<<endl;
		LeaveCriticalSection(&g_cs);
	}

	return 0;
}
DWORD WINAPI TestThreadPool2(PVOID pContext)
{

	for(int i=0;i<=100;i++)
	{
		EnterCriticalSection(&g_cs);
		cout<<"Two Thread is : "<<i<<endl;
		LeaveCriticalSection(&g_cs);
	}
	return 0;
}
DWORD WINAPI TestThreadPool3(PVOID pContext)
{

	for(int i=0;i<=100;i++)
	{
		EnterCriticalSection(&g_cs);
		cout<<"Three Thread is : "<<i<<endl;
		LeaveCriticalSection(&g_cs);
	}
	return 0;
}