darwin setevent的使用注意事项

信号无论调用setevent设置多少次触发信号，只要 WaitForSingleObject等待到一次信号，则信号自动设置为非触发状态。

HANDLE              fCondition = NULL;
unsigned int WINAPI _Entry(LPVOID inThread);
int main(int argc, char * argv[]) 
{

	fCondition = ::CreateEvent(NULL, FALSE, FALSE, NULL);

	unsigned int theId = 0; // We don't care about the identifier
	HANDLE fThreadID = (HANDLE)_beginthreadex( NULL,   // Inherit security
		0,      // Inherit stack size
		_Entry, // Entry function
		(void*)NULL,    // Entry arg
		0,      // Begin executing immediately
		&theId );



	while(1)
	{
		for (int i =0;i < 100 ;i ++)
		{
			SetEvent(fCondition);
		}
		cout << "准备休息...." << endl;
		Sleep(5000);
		

	}

	return 0;
}


unsigned int WINAPI _Entry(LPVOID inThread)
{
	while(true)
	{
		DWORD theErr = WaitForSingleObject(fCondition,INFINITE);
		Assert((theErr == WAIT_OBJECT_0) || (theErr == WAIT_TIMEOUT));
		cout << "抢到了" << endl;
	}
}