src/lxc/mainloop.h

   1 /*
   2  * lxc: linux Container library
   3  *
   4  * (C) Copyright IBM Corp. 2007, 2008
   5  *
   6  * Authors:
   7  * Daniel Lezcano <daniel.lezcano at free.fr>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #ifndef __LXC_MAINLOOP_H
  25 #define __LXC_MAINLOOP_H
  26
  27 #include <stdint.h>
  28
  29 #include "list.h"
  30
  31 #define LXC_MAINLOOP_ERROR -1
  32 #define LXC_MAINLOOP_CONTINUE 0
  33 #define LXC_MAINLOOP_CLOSE 1
  34
  35 struct lxc_epoll_descr {
  36         int epfd;
  37         struct lxc_list handlers;
  38 };
  39
  40 typedef int (*lxc_mainloop_callback_t)(int fd, uint32_t event, void *data,
  41                                        struct lxc_epoll_descr *descr);
  42
  43 extern int lxc_mainloop(struct lxc_epoll_descr *descr, int timeout_ms);
  44
  45 extern int lxc_mainloop_add_handler(struct lxc_epoll_descr *descr, int fd,
  46                                     lxc_mainloop_callback_t callback,
  47                                     void *data);
  48
  49 extern int lxc_mainloop_del_handler(struct lxc_epoll_descr *descr, int fd);
  50
  51 extern int lxc_mainloop_open(struct lxc_epoll_descr *descr);
  52
  53 extern int lxc_mainloop_close(struct lxc_epoll_descr *descr);
  54
  55 #endif