libguile/_scm.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM__SCM_H
   4 #define SCM__SCM_H
   5
   6 /* Copyright (C) 1995,1996,2000,2001, 2002, 2006, 2008 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 /**********************************************************************
  26  This file is Guile's central private header.
  27
  28  When included by other files, this file should preceed any include
  29  other than __scm.h.  See __scm.h for details regarding the purpose of
  30  and differences between _scm.h and __scm.h.
  31  **********************************************************************/
  32
  33 #if defined(__ia64) && !defined(__ia64__)
  34 # define __ia64__
  35 #endif
  36
  37 #if HAVE_CONFIG_H
  38 #  include <config.h>
  39 #endif
  40
  41 #include <errno.h>
  42 #include "libguile/__scm.h"
  43
  44 /* Include headers for those files central to the implementation.  The
  45    rest should be explicitly #included in the C files themselves.  */
  46 #include "libguile/error.h"     /* Everyone signals errors.  */
  47 #include "libguile/print.h"     /* Everyone needs to print.  */
  48 #include "libguile/pairs.h"     /* Everyone conses.  */
  49 #include "libguile/list.h"      /* Everyone makes lists.  */
  50 #include "libguile/gc.h"        /* Everyone allocates.  */
  51 #include "libguile/gsubr.h"     /* Everyone defines global functions.  */
  52 #include "libguile/procs.h"     /* Same.  */
  53 #include "libguile/numbers.h"   /* Everyone deals with fixnums.  */
  54 #include "libguile/symbols.h"   /* For length, chars, values, miscellany.  */
  55 #include "libguile/boolean.h"   /* Everyone wonders about the truth.  */
  56 #include "libguile/threads.h"   /* You are not alone. */
  57 #include "libguile/snarf.h"     /* Everyone snarfs. */
  58 #include "libguile/variable.h"
  59 #include "libguile/modules.h"
  60 #include "libguile/inline.h"
  61
  62 /* SCM_SYSCALL retries system calls that have been interrupted (EINTR).
  63    However this can be avoided if the operating system can restart
  64    system calls automatically.  We assume this is the case if
  65    sigaction is available and SA_RESTART is defined; they will be used
  66    when installing signal handlers.
  67    */
  68
  69 #ifdef HAVE_RESTARTABLE_SYSCALLS
  70 #if ! SCM_USE_PTHREAD_THREADS /* However, don't assume SA_RESTART
  71                                  works with pthreads... */
  72 #define SCM_SYSCALL(line) line
  73 #endif
  74 #endif
  75
  76 #ifndef SCM_SYSCALL
  77 #ifdef vms
  78 # ifndef __GNUC__
  79 #  include <ssdef.h>
  80 #  define SCM_SYSCALL(line) do{errno = 0;line;} \
  81         while(EVMSERR==errno && (vaxc$errno>>3)==(SS$_CONTROLC>>3))
  82 # endif /* ndef __GNUC__ */
  83 #endif /* def vms */
  84 #endif /* ndef SCM_SYSCALL  */
  85
  86 #ifndef SCM_SYSCALL
  87 # ifdef EINTR
  88 #  if (EINTR > 0)
  89 #   define SCM_SYSCALL(line) do{errno = 0;line;}while(EINTR==errno)
  90 #  endif /*  (EINTR > 0) */
  91 # endif /* def EINTR */
  92 #endif /* ndef SCM_SYSCALL */
  93
  94 #ifndef SCM_SYSCALL
  95 # define SCM_SYSCALL(line) line;
  96 #endif /* ndef SCM_SYSCALL */
  97
  98 #if !defined (MSDOS) && !defined (__MINGW32__)
  99 # ifdef ARM_ULIB
 100     extern volatile int errno;
 101 # else
 102     extern int errno;
 103 # endif /* def ARM_ULIB */
 104 #endif /* ndef MSDOS && ndef __MINGW32__*/
 105
 106 \f
 107
 108 #ifndef min
 109 #define min(A, B) ((A) <= (B) ? (A) : (B))
 110 #endif
 111 #ifndef max
 112 #define max(A, B) ((A) >= (B) ? (A) : (B))
 113 #endif
 114
 115
 116
 117 #if HAVE_STAT64
 118 #define CHOOSE_LARGEFILE(foo,foo64)     foo64
 119 #else
 120 #define CHOOSE_LARGEFILE(foo,foo64)     foo
 121 #endif
 122
 123 /* These names are a bit long, but they make it clear what they represent. */
 124 #define dirent_or_dirent64              CHOOSE_LARGEFILE(dirent,dirent64)
 125 #define fstat_or_fstat64                CHOOSE_LARGEFILE(fstat,fstat64)
 126 #define ftruncate_or_ftruncate64        CHOOSE_LARGEFILE(ftruncate,ftruncate64)
 127 #define lseek_or_lseek64                CHOOSE_LARGEFILE(lseek,lseek64)
 128 #define lstat_or_lstat64                CHOOSE_LARGEFILE(lstat,lstat64)
 129 #define off_t_or_off64_t                CHOOSE_LARGEFILE(off_t,off64_t)
 130 #define open_or_open64                  CHOOSE_LARGEFILE(open,open64)
 131 #define readdir_or_readdir64            CHOOSE_LARGEFILE(readdir,readdir64)
 132 #define readdir_r_or_readdir64_r        CHOOSE_LARGEFILE(readdir_r,readdir64_r)
 133 #define stat_or_stat64                  CHOOSE_LARGEFILE(stat,stat64)
 134 #define truncate_or_truncate64          CHOOSE_LARGEFILE(truncate,truncate64)
 135 #define scm_from_off_t_or_off64_t       CHOOSE_LARGEFILE(scm_from_off_t,scm_from_int64)
 136 #define scm_from_ino_t_or_ino64_t       CHOOSE_LARGEFILE(scm_from_ulong,scm_from_uint64)
 137 #define scm_from_blkcnt_t_or_blkcnt64_t CHOOSE_LARGEFILE(scm_from_ulong,scm_from_uint64)
 138 #define scm_to_off_t_or_off64_t         CHOOSE_LARGEFILE(scm_to_off_t,scm_to_int64)
 139
 140 #if SIZEOF_OFF_T == 4
 141 #  define scm_to_off_t    scm_to_int32
 142 #  define scm_from_off_t  scm_from_int32
 143 #elif SIZEOF_OFF_T == 8
 144 #  define scm_to_off_t    scm_to_int64
 145 #  define scm_from_off_t  scm_from_int64
 146 #else
 147 #  error sizeof(off_t) is not 4 or 8.
 148 #endif
 149 #define scm_to_off64_t    scm_to_int64
 150 #define scm_from_off64_t  scm_from_int64
 151
 152
 153 #endif  /* SCM__SCM_H */
 154
 155 /*
 156   Local Variables:
 157   c-file-style: "gnu"
 158   End:
 159 */