os/xserver_poll.h

   1 /*
   2  * Copyright © 2016 Keith Packard
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #ifndef _XSERVER_POLL_H_
  24 #define _XSERVER_POLL_H_
  25
  26 #ifndef _DIX_CONFIG_H_
  27 #error must include dix-config.h to use xserver_poll.h
  28 #endif
  29
  30 #ifdef HAVE_POLL
  31 #include <poll.h>
  32 #define xserver_poll(fds, nfds, timeout) poll(fds, nfds, timeout)
  33 #else
  34
  35 #define POLLIN          0x01
  36 #define POLLPRI         0x02
  37 #define POLLOUT         0x04
  38 #define POLLERR         0x08
  39 #define POLLHUP         0x10
  40 #define POLLNVAL        0x20
  41
  42 struct pollfd
  43 {
  44     int     fd;
  45     short   events;
  46     short   revents;
  47 };
  48
  49 typedef unsigned long nfds_t;
  50
  51 int xserver_poll (struct pollfd *pArray, nfds_t n_fds, int timeout);
  52
  53 #endif
  54
  55 #endif /* _XSERVER_POLL_H_ */