多线程同步打印ABC

最新推荐文章于 2025-08-12 18:06:10 发布

转载最新推荐文章于 2025-08-12 18:06:10 发布 · 93 阅读

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原文链接：https://my.oschina.net/u/262868/blog/66961

文章标签：

#python

2019独角兽企业重金招聘Python工程师标准>>>

以下为三个线程分别打印A、B和C，代码中采用Event来同步线程，保证按照ABC的顺序循环打印。

同志们若有更好的做法，请指教，谢谢！

附：这里有问题，对于线程关闭最好的做法是自然结束，但是工作中常常遇到的是需要线程函数中来个while，哪位兄弟能兼容解决这个问题？请不吝赐教！~

#include <conio.h>
#include <windows.h>
#include <iostream>
using namespace std;

DWORD WINAPI DealThreadA(void* para)
{
	HANDLE handle = *(HANDLE*)para;
	while (1)
	{
		WaitForSingleObject(handle, INFINITE);

		cout<<"A.."<<endl;

		ResetEvent(handle);
	}

	return 0;
}

DWORD WINAPI DealThreadB(void* para)
{
	HANDLE handle = *(HANDLE*)para;
	while (1)
	{
		WaitForSingleObject(handle, INFINITE);

		cout<<"B.."<<endl;

		ResetEvent(handle);
	}

	return 0;
}

DWORD WINAPI DealThreadC(void* para)
{
	HANDLE handle = *(HANDLE*)para;
	while (1)
	{
		WaitForSingleObject(handle, INFINITE);

		cout<<"C.."<<endl<<endl;

		ResetEvent(handle);
	}

	return 0;
}

bool IsEventHasSignal(HANDLE handle)
{
	if(WAIT_OBJECT_0 == WaitForSingleObject(handle, 0))
		return true;

	return false;
}

void WaitEventSignalBeResponsed(HANDLE handle)
{
	while (IsEventHasSignal(handle))
		Sleep(1);
}

int _tmain(int argc, _TCHAR* argv[])
{
	HANDLE hA = CreateEvent(NULL, TRUE, FALSE, NULL);
	HANDLE hB = CreateEvent(NULL, TRUE, FALSE, NULL);
	HANDLE hC = CreateEvent(NULL, TRUE, FALSE, NULL);

	CreateThread(0, 0, DealThreadA, (void*)&hA, 0, 0);
	CreateThread(0, 0, DealThreadB, (void*)&hB, 0, 0);
	CreateThread(0, 0, DealThreadC, (void*)&hC, 0, 0);

	while (!_kbhit())
	{
		Sleep(1000);

		SetEvent(hA);
		WaitEventSignalBeResponsed(hA);

		SetEvent(hB);
		WaitEventSignalBeResponsed(hB);

		SetEvent(hC);
		WaitEventSignalBeResponsed(hC);
	}

	CloseHandle(hA);
	CloseHandle(hB);
	CloseHandle(hC);

	return 0;
}

转载于:https://my.oschina.net/u/262868/blog/66961