/*
 * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005 Yokogawa Electric Corporation,
 * YDC Corporation, IPA (Information-technology Promotion Agency, Japan).
 * All rights reserved.
 * 
 * Redistribution and use of this software in source and binary forms, with 
 * or without modification, are permitted provided that the following 
 * conditions and disclaimer are agreed and accepted by the user:
 * 
 * 1. Redistributions of source code must retain the above copyright 
 * notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the following disclaimer in the 
 * documentation and/or other materials provided with the distribution.
 * 
 * 3. Neither the names of the copyrighters, the name of the project which 
 * is related to this software (hereinafter referred to as "project") nor 
 * the names of the contributors may be used to endorse or promote products 
 * derived from this software without specific prior written permission.
 * 
 * 4. No merchantable use may be permitted without prior written 
 * notification to the copyrighters. However, using this software for the 
 * purpose of testing or evaluating any products including merchantable 
 * products may be permitted without any notification to the copyrighters.
 * 
 * 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHTERS, THE PROJECT AND 
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING 
 * BUT NOT LIMITED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
 * FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.  IN NO EVENT SHALL THE 
 * COPYRIGHTERS, THE PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT,STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $TAHI: v6eval/lib/Cm/CmFdMasks.h,v 1.4 2001/10/12 04:56:13 tanaka Exp $
 */
#ifndef _Cm_CmFdMasks_h_
#define _Cm_CmFdMasks_h_	1
/* Interface Definition */
struct CmReceiver;
#include "CmFdSet.h"
struct timeval;
struct CmFdMasks {
private:
	CmFdSet masks_;
	CmFdSet readies_;
	CmFdSet onSelects_;
	CmReceiver** handlers_;
public:
	CmFdMasks(int n=0);
	void attach(int fd,CmReceiver* handler);
	void detach(int fd);
	CmReceiver* notify(int fd);
	CmReceiver* handler(int fd) const;
	bool anySet() const;
	CmFdSet& onSelects();
	void checkConnections(int n,timeval&);
	void clearReady(int fd);
	void setReady(int fd);
	void clear(int fd);
};

inline void CmFdMasks::attach(int fd,CmReceiver* h) {
	masks_.setBit(fd);
	handlers_[fd]=h;}
inline void CmFdMasks::detach(int fd) {
	masks_.clrBit(fd);
	readies_.clrBit(fd);
	handlers_[fd]=0;}
inline CmReceiver* CmFdMasks::handler(int fd) const {
	return handlers_[fd];}
inline bool CmFdMasks::anySet() const {return readies_.anySet();}
inline CmFdSet& CmFdMasks::onSelects() {
	onSelects_=masks_;
	return onSelects_;}
inline void CmFdMasks::clearReady(int fd) {readies_.clrBit(fd);}
inline void CmFdMasks::setReady(int fd) {readies_.setBit(fd);}
inline void CmFdMasks::clear(int fd) {masks_.clrBit(fd); readies_.clrBit(fd);}
#endif