libguile/iselect.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_ISELECT_H
   4 #define SCM_ISELECT_H
   5
   6 /* Copyright (C) 1997,1998,2000,2001, 2002, 2006 Free Software Foundation, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 \f
  24
  25 #include "libguile/__scm.h"
  26
  27 /* Needed for FD_SET on some systems.  */
  28 #include <sys/types.h>
  29
  30 #if SCM_HAVE_SYS_SELECT_H
  31 # include <sys/select.h>
  32 #endif
  33
  34 #if SCM_HAVE_WINSOCK2_H
  35 # include <winsock2.h>
  36 #endif
  37
  38 #ifdef FD_SET
  39
  40 #define SELECT_TYPE fd_set
  41 #define SELECT_SET_SIZE FD_SETSIZE
  42
  43 #else /* no FD_SET */
  44
  45 /* Define the macros to access a single-int bitmap of descriptors.  */
  46 #define SELECT_SET_SIZE 32
  47 #define SELECT_TYPE int
  48 #define FD_SET(n, p) (*(p) |= (1 << (n)))
  49 #define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
  50 #define FD_ISSET(n, p) (*(p) & (1 << (n)))
  51 #define FD_ZERO(p) (*(p) = 0)
  52
  53 #endif /* no FD_SET */
  54
  55 SCM_API int scm_std_select (int fds,
  56                             SELECT_TYPE *rfds,
  57                             SELECT_TYPE *wfds,
  58                             SELECT_TYPE *efds,
  59                             struct timeval *timeout);
  60
  61 #endif  /* SCM_ISELECT_H */
  62
  63 /*
  64   Local Variables:
  65   c-file-style: "gnu"
  66   End:
  67 */