event.h

实时监控

#ifndef _EVENT_H
#define _EVENT_H

class event
{
	HANDLE h;
public:
	event():h(NULL)
	{
		h = CreateEvent(NULL, TRUE, FALSE, NULL);
	}

	event(bool initial): h(NULL)
	{
		h = CreateEvent(NULL, TRUE, initial!=false, NULL);
	}
	event(bool manual, bool initial): h(NULL)
	{
		h = CreateEvent(NULL, manual==true, initial!=false, NULL);
	}
	~event()
	{
		if(h)
		{
			CloseHandle(h);
			h = NULL;
		}
	}
/*
	bool create(bool initial=false)
	{
		destroy();

		h = CreateEvent(NULL, TRUE, initial!=false, NULL);
		return h != NULL;
	}

	void destroy()
	{
		if(h)
		{
			CloseHandle(h);
			h = NULL;
		}
	}
*/

	void set(){	SetEvent(h);}
	void reset(){ResetEvent(h);}
	void pulse(){PulseEvent(h);}
	operator bool(){return wait(0);}
	bool operator!() {return !(bool)(*this);}
	bool wait(DWORD timeout=INFINITE)
	{
		return WaitForSingleObject(h, timeout) == WAIT_OBJECT_0;
	}
	HANDLE handle() {return h;}
};
#endif	// _EVENT_H