libguile/iselect.h

   1 /* classes: h_files */
   2
   3 #ifndef ISELECTH
   4 #define ISELECTH
   5
   6 /*      Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2, or (at your option)
  11  * any later version.
  12  *
  13  * This program 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
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this software; see the file COPYING.  If not, write to
  20  * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  21  * Boston, MA 02111-1307 USA
  22  *
  23  * As a special exception, the Free Software Foundation gives permission
  24  * for additional uses of the text contained in its release of GUILE.
  25  *
  26  * The exception is that, if you link the GUILE library with other files
  27  * to produce an executable, this does not by itself cause the
  28  * resulting executable to be covered by the GNU General Public License.
  29  * Your use of that executable is in no way restricted on account of
  30  * linking the GUILE library code into it.
  31  *
  32  * This exception does not however invalidate any other reasons why
  33  * the executable file might be covered by the GNU General Public License.
  34  *
  35  * This exception applies only to the code released by the
  36  * Free Software Foundation under the name GUILE.  If you copy
  37  * code from other Free Software Foundation releases into a copy of
  38  * GUILE, as the General Public License permits, the exception does
  39  * not apply to the code that you add in this way.  To avoid misleading
  40  * anyone as to the status of such modified files, you must delete
  41  * this exception notice from them.
  42  *
  43  * If you write modifications of your own for GUILE, it is your choice
  44  * whether to permit this exception to apply to your modifications.
  45  * If you do not wish that, delete this exception notice.
  46  */
  47
  48 #include "libguile/__scm.h"
  49
  50 /* Needed for FD_SET on some systems.  */
  51 #include <sys/types.h>
  52
  53 # ifdef TIME_WITH_SYS_TIME
  54 #  include <sys/time.h>
  55 #  include <time.h>
  56 # else
  57 #  ifdef HAVE_SYS_TIME_H
  58 #   include <sys/time.h>
  59 #  else
  60 #   ifdef HAVE_TIME_H
  61 #    include <time.h>
  62 #   endif
  63 #  endif
  64 # endif
  65
  66 #ifdef HAVE_SYS_SELECT_H
  67 #include <sys/select.h>
  68 #endif
  69
  70 #ifdef FD_SET
  71
  72 #define SELECT_TYPE fd_set
  73 #define SELECT_SET_SIZE FD_SETSIZE
  74
  75 #else /* no FD_SET */
  76
  77 /* Define the macros to access a single-int bitmap of descriptors.  */
  78 #define SELECT_SET_SIZE 32
  79 #define SELECT_TYPE int
  80 #define FD_SET(n, p) (*(p) |= (1 << (n)))
  81 #define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
  82 #define FD_ISSET(n, p) (*(p) & (1 << (n)))
  83 #define FD_ZERO(p) (*(p) = 0)
  84
  85 #endif /* no FD_SET */
  86
  87 extern int scm_internal_select (int fds,
  88                                 SELECT_TYPE *rfds,
  89                                 SELECT_TYPE *wfds,
  90                                 SELECT_TYPE *efds,
  91                                 struct timeval *timeout);
  92
  93 #ifdef GUILE_ISELECT
  94
  95 extern int scm_I_am_dead;
  96
  97 extern void scm_error_revive_threads (void);
  98 extern void scm_init_iselect (void);
  99
 100 #endif /* GUILE_ISELECT */
 101
 102 #endif
 103
 104 /*
 105   Local Variables:
 106   c-file-style: "gnu"
 107   End:
 108 */