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/*-*-c++-*-
* $Id$
*
* This file is part of plptools.
*
* Copyright (C) 1999 Philip Proudman <philip.proudman@btinternet.com>
* Copyright (C) 2000, 2001 Fritz Elfert <felfert@to.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "iowatch.h"
#include <unistd.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <memory.h>
IOWatch::IOWatch() {
num = 0;
io = new int [FD_SETSIZE];
memset(io, -1, FD_SETSIZE);
}
IOWatch::~IOWatch() {
delete [] io;
}
void IOWatch::addIO(const int fd) {
int pos;
for (pos = 0; pos < num && fd < io[pos]; pos++);
if (io[pos] == fd)
return;
for (int i = num; i > pos; i--)
io[i] = io[i-1];
io[pos] = fd;
num++;
}
void IOWatch::remIO(const int fd) {
int pos;
for (pos = 0; pos < num && fd != io[pos]; pos++);
if (pos != num) {
num--;
for (int i = pos; i <num; i++) io[i] = io[i+1];
}
}
bool IOWatch::watch(const long secs, const long usecs) {
if (num > 0) {
int maxfd = 0;
fd_set iop;
FD_ZERO(&iop);
for (int i = 0; i < num; i++) {
FD_SET(io[i], &iop);
if (io[i] > maxfd)
maxfd = io[i];
}
struct timeval t;
t.tv_usec = usecs;
t.tv_sec = secs;
return (select(maxfd+1, &iop, NULL, NULL, &t) > 0);
}
sleep(secs);
usleep(usecs);
return false;
}
/*
* Local variables:
* c-basic-offset: 4
* End:
*/
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