/*
 * 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.cc,v 1.4 2001/10/12 04:56:13 tanaka Exp $
 */
#include "CmFdMasks.h"
//IMPLEMENTATION
#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>
#include "CmReceiver.h"

CmReceiver* CmFdMasks::notify(int n) {
	CmReceiver* h=handlers_[n];
	if(h==0) return 0;
	return (onSelects_.isSet(n)||readies_.isSet(n))?h:0;}

CmFdMasks::CmFdMasks(int n) {
	handlers_=new CmReceiver*[n];
	for(int i=0;i<n;i++) {handlers_[i]=0;}}

void CmFdMasks::checkConnections(int m,timeval& zero) {
	for(int fd=0;fd<m;fd++){
		if(handler(fd)==0) {
			clear(fd); continue;}
		CmFdSet local;
		local.setBit(fd);
		if(select(fd+1, local, 0, 0, &zero) < 0) {
			detach(fd);}
		local.clrBit(fd);}}