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68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* Copyright (C) 2003 - 2004 Mike Wray <mike.wray@hp.com>.
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version. This library is
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* distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include "select.h"
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/** Zero all the file descriptor sets.
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*
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* @param set select set
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* @param fd file descriptor
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* @return 0 on success, -1 otherwise
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*/
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void SelectSet_zero(SelectSet *set){
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set->n = 0;
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FD_ZERO(&set->rd);
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FD_ZERO(&set->wr);
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FD_ZERO(&set->er);
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}
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/** Add a file descriptor to the write set.
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*
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* @param set select set
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* @param fd file descriptor
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* @return 0 on success, -1 otherwise
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*/
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void SelectSet_add_read(SelectSet *set, int fd){
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FD_SET(fd, &set->rd);
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if(fd > set->n) set->n = fd;
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}
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/** Add a file descriptor to the write set.
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*
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* @param set select set
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* @param fd file descriptor
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* @return 0 on success, -1 otherwise
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*/
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void SelectSet_add_write(SelectSet *set, int fd){
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FD_SET(fd, &set->wr);
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if(fd > set->n) set->n = fd;
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}
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/** Select on file descriptors.
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*
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* @param set select set
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* @param timeout timeout (may be NULL for no timeout)
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* @return 0 on success, -1 otherwise
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*/
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int SelectSet_select(SelectSet *set, struct timeval *timeout){
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return select(set->n+1, &set->rd, &set->wr, &set->er, timeout);
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}
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