libguile/_scm.h

   1 /* classes: h_files */
   2
   3 #ifndef _SCMH
   4 #define _SCMH
   5 /*      Copyright (C) 1995,1996 Free Software Foundation, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this software; see the file COPYING.  If not, write to
  19  * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20  * Boston, MA 02111-1307 USA
  21  *
  22  * As a special exception, the Free Software Foundation gives permission
  23  * for additional uses of the text contained in its release of GUILE.
  24  *
  25  * The exception is that, if you link the GUILE library with other files
  26  * to produce an executable, this does not by itself cause the
  27  * resulting executable to be covered by the GNU General Public License.
  28  * Your use of that executable is in no way restricted on account of
  29  * linking the GUILE library code into it.
  30  *
  31  * This exception does not however invalidate any other reasons why
  32  * the executable file might be covered by the GNU General Public License.
  33  *
  34  * This exception applies only to the code released by the
  35  * Free Software Foundation under the name GUILE.  If you copy
  36  * code from other Free Software Foundation releases into a copy of
  37  * GUILE, as the General Public License permits, the exception does
  38  * not apply to the code that you add in this way.  To avoid misleading
  39  * anyone as to the status of such modified files, you must delete
  40  * this exception notice from them.
  41  *
  42  * If you write modifications of your own for GUILE, it is your choice
  43  * whether to permit this exception to apply to your modifications.
  44  * If you do not wish that, delete this exception notice.  */
  45 \f
  46
  47 #include "__scm.h"
  48
  49 /* This file is only visible to the libguile sources */
  50
  51 /* Include headers for those files central to the implementation.  The
  52    rest should be explicitly #included in the C files themselves.  */
  53 #include "error.h"              /* Everyone signals errors.  */
  54 #include "print.h"              /* Everyone needs to print.  */
  55 #include "pairs.h"              /* Everyone conses.  */
  56 #include "list.h"               /* Everyone makes lists.  */
  57 #include "gc.h"                 /* Everyone allocates.  */
  58 #include "gsubr.h"              /* Everyone defines global functions.  */
  59 #include "procs.h"              /* Same.  */
  60 #include "numbers.h"            /* Everyone deals with fixnums.  */
  61 #include "symbols.h"            /* For length, chars, values, miscellany.  */
  62 #include "boolean.h"            /* Everyone wonders about the truth.  */
  63 #include "strings.h"            /* Everyone loves string.  */
  64 #include "vectors.h"            /* Vectors are used for structures a lot.  */
  65 #include "root.h"               /* Everyone uses these objects.  */
  66 #include "ports.h"              /* Everyone does I/O.  */
  67 #include "async.h"              /* Everyone allows/disallows ints.  */
  68 #ifdef USE_THREADS
  69 #include "threads.h"            /* The cooperative thread package does
  70                                    switching at async ticks.  */
  71 #endif
  72 #include "snarf.h"              /* Everyone snarfs. */
  73
  74 /* On VMS, GNU C's errno.h contains a special hack to get link attributes
  75  * for errno correct for linking to the C RTL.
  76  */
  77 #include <errno.h>
  78
  79 /* SCM_SYSCALL retries system calls that have been interrupted (EINTR).
  80    However this can be avoided if the operating system can restart
  81    system calls automatically.  We assume this is the case if
  82    sigaction is available and SA_RESTART is defined; they will be used
  83    when installing signal handlers.
  84    */
  85
  86 #ifdef HAVE_RESTARTS
  87 #define SCM_SYSCALL(line) line
  88 #endif
  89
  90 #ifndef SCM_SYSCALL
  91 #ifdef vms
  92 # ifndef __GNUC__
  93 #  include <ssdef.h>
  94 #  define SCM_SYSCALL(line) do{errno = 0;line;} \
  95         while(EVMSERR==errno && (vaxc$errno>>3)==(SS$_CONTROLC>>3))
  96 # endif /* ndef __GNUC__ */
  97 #endif /* def vms */
  98 #endif /* ndef SCM_SYSCALL  */
  99
 100 #ifndef SCM_SYSCALL
 101 # ifdef EINTR
 102 #  if (EINTR > 0)
 103 #   define SCM_SYSCALL(line) do{errno = 0;line;}while(EINTR==errno)
 104 #  endif /*  (EINTR > 0) */
 105 # endif /* def EINTR */
 106 #endif /* ndef SCM_SYSCALL */
 107
 108 #ifndef SCM_SYSCALL
 109 # define SCM_SYSCALL(line) line;
 110 #endif /* ndef SCM_SYSCALL */
 111
 112 #ifndef MSDOS
 113 # ifdef ARM_ULIB
 114     extern volatile int errno;
 115 # else
 116     extern int errno;
 117 # endif /* def ARM_ULIB */
 118 #endif /* ndef MSDOS */
 119 #ifdef __TURBOC__
 120 # if (__TURBOC__==1)
 121  /* Needed for TURBOC V1.0 */
 122  extern int errno;
 123 # endif /*  (__TURBOC__==1) */
 124 #endif /* def __TURBOC__ */
 125
 126 \f
 127
 128 #ifndef min
 129 #define min(A,B) ((A) <= (B) ? (A) : (B))
 130 #endif
 131 #ifndef max
 132 #define max(A,B) ((A) >= (B) ? (A) : (B))
 133 #endif
 134
 135 #endif  /* _SCMH */
 136