haiku/headers/private/app/LooperList.h

/*
 * Copyright 2001-2007, Haiku.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *		Erik Jaesler (erik@cgsoftware.com)
 */
#ifndef LOOPERLIST_H
#define LOOPERLIST_H


#include <Locker.h>
#include <OS.h>
#include <SupportDefs.h>

#include <vector>

class BList;
class BLooper;


namespace BPrivate {

class BLooperList {
	public:
		BLooperList();

		bool		Lock();
		void		Unlock();
		bool		IsLocked();

		void		AddLooper(BLooper* l);
		bool		IsLooperValid(const BLooper* l);
		bool		RemoveLooper(BLooper* l);
		void		GetLooperList(BList* list);
		int32		CountLoopers();
		BLooper*	LooperAt(int32 index);
		BLooper*	LooperForThread(thread_id tid);
		BLooper*	LooperForName(const char* name);
		BLooper*	LooperForPort(port_id port);

	private:
		struct LooperData {
			LooperData();
			LooperData(BLooper* looper);
			LooperData(const LooperData& rhs);
			LooperData& operator=(const LooperData& rhs);

			BLooper*	looper;
		};

		static bool EmptySlotPred(LooperData& Data);
		struct FindLooperPred {
			FindLooperPred(const BLooper* loop) : looper(loop) {;}
			bool operator()(LooperData& Data);
			const BLooper* looper;
		};
		struct FindThreadPred {
			FindThreadPred(thread_id tid) : thread(tid) {;}
			bool operator()(LooperData& Data);
			thread_id thread;
		};
		struct FindNamePred {
			FindNamePred(const char* n) : name(n) {;}
			bool operator()(LooperData& Data);
			const char* name;
		};
		struct FindPortPred {
			FindPortPred(port_id pid) : port(pid) {;}
			bool operator()(LooperData& Data);
			port_id port;
		};

		void	AssertLocked();

		BLocker					fLock;
		std::vector<LooperData>	fData;
};

extern BLooperList gLooperList;

}	// namespace BPrivate

#endif	// LOOPERLIST_H