/*  * Abstraction API/layer for the various ways PvPGN can inspect sockets state  * 2003 (C)   *  * Code is based on the ideas found in thttpd project.  *  * 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.  */#ifndef __FDWATCH_INCLUDED__#define __FDWATCH_INCLUDED__#include "common/elist.h"typedef enum {    fdwatch_type_none = 0,    fdwatch_type_read = 1,    fdwatch_type_write = 2} t_fdwatch_type;typedef int (*fdwatch_handler)(void *data, t_fdwatch_type);typedef struct {    int fd;    int rw;    fdwatch_handler hnd;    void *data;    t_elist uselist;    t_elist freelist;} t_fdwatch_fd;#ifdef FDWATCH_BACKENDtypedef int (*t_fdw_cb)(t_fdwatch_fd *cfd, void *data);#endiftypedef struct {    int (*init)(int nfds);    int (*close)(void);    int (*add_fd)(int idx, t_fdwatch_type rw);    int (*del_fd)(int idx);    int (*watch)(long timeout_msecs);    void (*handle)(void);} t_fdw_backend;extern int fdw_maxcons;extern t_fdwatch_fd *fdw_fds;#define fdw_idx(ptr) ((ptr) - fdw_fds)#define fdw_fd(ptr) ((ptr)->fd)#define fdw_rw(ptr) ((ptr)->rw)#define fdw_data(ptr) ((ptr)->data)#define fdw_hnd(ptr) ((ptr)->hnd)extern int fdwatch_init(int maxcons);extern int fdwatch_close(void);extern int fdwatch_add_fd(int fd, t_fdwatch_type rw, fdwatch_handler h, void *data);extern int fdwatch_update_fd(int idx, t_fdwatch_type rw);extern int fdwatch_del_fd(int idx);extern int fdwatch(long timeout_msecs);extern void fdwatch_handle(void);#ifdef FDWATCH_BACKENDextern void fdwatch_traverse(t_fdw_cb cb, void *data);#endif#endif /* __FDWATCH_INCLUDED__ */