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 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 \f
  48
  49 #include "libguile/__scm.h"
  50
  51 /* Needed for FD_SET on some systems.  */
  52 #include <sys/types.h>
  53
  54 # ifdef TIME_WITH_SYS_TIME
  55 #  include <sys/time.h>
  56 #  include <time.h>
  57 # else
  58 #  ifdef HAVE_SYS_TIME_H
  59 #   include <sys/time.h>
  60 #  else
  61 #   ifdef HAVE_TIME_H
  62 #    include <time.h>
  63 #   endif
  64 #  endif
  65 # endif
  66
  67 #ifdef HAVE_SYS_SELECT_H
  68 #include <sys/select.h>
  69 #endif
  70
  71 #ifdef HAVE_WINSOCK2_H
  72 #include <winsock2.h>
  73 #endif
  74
  75 #ifdef FD_SET
  76
  77 #define SELECT_TYPE fd_set
  78 #define SELECT_SET_SIZE FD_SETSIZE
  79
  80 #else /* no FD_SET */
  81
  82 /* Define the macros to access a single-int bitmap of descriptors.  */
  83 #define SELECT_SET_SIZE 32
  84 #define SELECT_TYPE int
  85 #define FD_SET(n, p) (*(p) |= (1 << (n)))
  86 #define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
  87 #define FD_ISSET(n, p) (*(p) & (1 << (n)))
  88 #define FD_ZERO(p) (*(p) = 0)
  89
  90 #endif /* no FD_SET */
  91
  92 extern int scm_internal_select (int fds,
  93                                 SELECT_TYPE *rfds,
  94                                 SELECT_TYPE *wfds,
  95                                 SELECT_TYPE *efds,
  96                                 struct timeval *timeout);
  97
  98 #ifdef GUILE_ISELECT
  99
 100 extern int scm_I_am_dead;
 101
 102 extern void scm_error_revive_threads (void);
 103 extern void scm_init_iselect (void);
 104
 105 #endif /* GUILE_ISELECT */
 106
 107 #endif  /* SCM_ISELECT_H */
 108
 109 /*
 110   Local Variables:
 111   c-file-style: "gnu"
 112   End:
 113 */