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 License
  10  * as published by the Free Software Foundation; either version 3 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * 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
  21  * 02110-1301 USA
  22  */
  23
  24 \f
  25
  26 #include "libguile/__scm.h"
  27
  28 /* Needed for FD_SET on some systems.  */
  29 #include <sys/types.h>
  30
  31 #if SCM_HAVE_SYS_SELECT_H
  32 # include <sys/select.h>
  33 #endif
  34
  35 #if SCM_HAVE_WINSOCK2_H
  36 # include <winsock2.h>
  37 #endif
  38
  39 #ifdef FD_SET
  40
  41 #define SELECT_TYPE fd_set
  42 #define SELECT_SET_SIZE FD_SETSIZE
  43
  44 #else /* no FD_SET */
  45
  46 /* Define the macros to access a single-int bitmap of descriptors.  */
  47 #define SELECT_SET_SIZE 32
  48 #define SELECT_TYPE int
  49 #define FD_SET(n, p) (*(p) |= (1 << (n)))
  50 #define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
  51 #define FD_ISSET(n, p) (*(p) & (1 << (n)))
  52 #define FD_ZERO(p) (*(p) = 0)
  53
  54 #endif /* no FD_SET */
  55
  56 SCM_API int scm_std_select (int fds,
  57                             SELECT_TYPE *rfds,
  58                             SELECT_TYPE *wfds,
  59                             SELECT_TYPE *efds,
  60                             struct timeval *timeout);
  61
  62 #endif  /* SCM_ISELECT_H */
  63
  64 /*
  65   Local Variables:
  66   c-file-style: "gnu"
  67   End:
  68 */