| | 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, 2009, 2010, |
| | 7 | * 2011, 2013, 2014 Free Software Foundation, Inc. |
| | 8 | * |
| | 9 | * This library is free software; you can redistribute it and/or |
| | 10 | * modify it under the terms of the GNU Lesser General Public License |
| | 11 | * as published by the Free Software Foundation; either version 3 of |
| | 12 | * the License, or (at your option) any later version. |
| | 13 | * |
| | 14 | * This library is distributed in the hope that it will be useful, but |
| | 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| | 17 | * Lesser General Public License for more details. |
| | 18 | * |
| | 19 | * You should have received a copy of the GNU Lesser General Public |
| | 20 | * License along with this library; if not, write to the Free Software |
| | 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| | 22 | * 02110-1301 USA |
| | 23 | */ |
| | 24 | |
| | 25 | \f |
| | 26 | |
| | 27 | /********************************************************************** |
| | 28 | This file is Guile's central private header. |
| | 29 | |
| | 30 | When included by other files, this file should preceed any include |
| | 31 | other than __scm.h. See __scm.h for details regarding the purpose of |
| | 32 | and differences between _scm.h and __scm.h. |
| | 33 | **********************************************************************/ |
| | 34 | |
| | 35 | #if defined(__ia64) && !defined(__ia64__) |
| | 36 | # define __ia64__ |
| | 37 | #endif |
| | 38 | |
| | 39 | #if HAVE_CONFIG_H |
| | 40 | # include <config.h> |
| | 41 | #endif |
| | 42 | |
| | 43 | /* The size of `scm_t_bits'. */ |
| | 44 | #define SIZEOF_SCM_T_BITS SIZEOF_VOID_P |
| | 45 | |
| | 46 | /* Undefine HAVE_STRUCT_TIMESPEC, because the libguile C code doesn't |
| | 47 | need it anymore, and because on MinGW: |
| | 48 | |
| | 49 | - the definition of struct timespec is provided (if at all) by |
| | 50 | pthread.h |
| | 51 | |
| | 52 | - pthread.h will _not_ define struct timespec if |
| | 53 | HAVE_STRUCT_TIMESPEC is 1, because then it thinks that it doesn't |
| | 54 | need to. |
| | 55 | |
| | 56 | The libguile C code doesn't need HAVE_STRUCT_TIMESPEC anymore, |
| | 57 | because the value of HAVE_STRUCT_TIMESPEC has already been |
| | 58 | incorporated in how scm_t_timespec is defined (in scmconfig.h), and |
| | 59 | the rest of the libguile C code now just uses scm_t_timespec. |
| | 60 | */ |
| | 61 | #ifdef HAVE_STRUCT_TIMESPEC |
| | 62 | #undef HAVE_STRUCT_TIMESPEC |
| | 63 | #endif |
| | 64 | |
| | 65 | #include <errno.h> |
| | 66 | #include <verify.h> |
| | 67 | #include <alignof.h> |
| | 68 | #include "libguile/__scm.h" |
| | 69 | |
| | 70 | /* Include headers for those files central to the implementation. The |
| | 71 | rest should be explicitly #included in the C files themselves. */ |
| | 72 | #include "libguile/error.h" /* Everyone signals errors. */ |
| | 73 | #include "libguile/print.h" /* Everyone needs to print. */ |
| | 74 | #include "libguile/pairs.h" /* Everyone conses. */ |
| | 75 | #include "libguile/list.h" /* Everyone makes lists. */ |
| | 76 | #include "libguile/gc.h" /* Everyone allocates. */ |
| | 77 | #include "libguile/gsubr.h" /* Everyone defines global functions. */ |
| | 78 | #include "libguile/procs.h" /* Same. */ |
| | 79 | #include "libguile/numbers.h" /* Everyone deals with fixnums. */ |
| | 80 | #include "libguile/symbols.h" /* For length, chars, values, miscellany. */ |
| | 81 | #include "libguile/boolean.h" /* Everyone wonders about the truth. */ |
| | 82 | #include "libguile/threads.h" /* You are not alone. */ |
| | 83 | #include "libguile/snarf.h" /* Everyone snarfs. */ |
| | 84 | #include "libguile/foreign.h" /* Snarfing needs the foreign data structures. */ |
| | 85 | #include "libguile/programs.h" /* ... and program.h. */ |
| | 86 | #include "libguile/variable.h" |
| | 87 | #include "libguile/modules.h" |
| | 88 | #include "libguile/inline.h" |
| | 89 | #include "libguile/strings.h" |
| | 90 | |
| | 91 | /* ASYNC_TICK after finding EINTR in order to handle pending signals, if |
| | 92 | any. See comment in scm_syserror. */ |
| | 93 | #ifndef SCM_SYSCALL |
| | 94 | #ifdef vms |
| | 95 | # ifndef __GNUC__ |
| | 96 | # include <ssdef.h> |
| | 97 | # define SCM_SYSCALL(line) \ |
| | 98 | do \ |
| | 99 | { \ |
| | 100 | errno = 0; \ |
| | 101 | line; \ |
| | 102 | if (EVMSERR == errno && (vaxc$errno>>3)==(SS$_CONTROLC>>3)) \ |
| | 103 | SCM_ASYNC_TICK; \ |
| | 104 | else \ |
| | 105 | break; \ |
| | 106 | } \ |
| | 107 | while (1) |
| | 108 | # endif /* ndef __GNUC__ */ |
| | 109 | #endif /* def vms */ |
| | 110 | #endif /* ndef SCM_SYSCALL */ |
| | 111 | |
| | 112 | #ifndef SCM_SYSCALL |
| | 113 | # ifdef EINTR |
| | 114 | # if (EINTR > 0) |
| | 115 | # define SCM_SYSCALL(line) \ |
| | 116 | do \ |
| | 117 | { \ |
| | 118 | errno = 0; \ |
| | 119 | line; \ |
| | 120 | if (errno == EINTR) \ |
| | 121 | { \ |
| | 122 | SCM_ASYNC_TICK; \ |
| | 123 | errno = EINTR; \ |
| | 124 | } \ |
| | 125 | } \ |
| | 126 | while (errno == EINTR) |
| | 127 | # endif /* (EINTR > 0) */ |
| | 128 | # endif /* def EINTR */ |
| | 129 | #endif /* ndef SCM_SYSCALL */ |
| | 130 | |
| | 131 | #ifndef SCM_SYSCALL |
| | 132 | # define SCM_SYSCALL(line) line; |
| | 133 | #endif /* ndef SCM_SYSCALL */ |
| | 134 | |
| | 135 | \f |
| | 136 | |
| | 137 | #ifndef min |
| | 138 | #define min(A, B) ((A) <= (B) ? (A) : (B)) |
| | 139 | #endif |
| | 140 | #ifndef max |
| | 141 | #define max(A, B) ((A) >= (B) ? (A) : (B)) |
| | 142 | #endif |
| | 143 | |
| | 144 | /* Return the first integer greater than or equal to LEN such that |
| | 145 | LEN % ALIGN == 0. Return LEN if ALIGN is zero. */ |
| | 146 | #define ROUND_UP(len, align) \ |
| | 147 | ((align) ? (((len) - 1UL) | ((align) - 1UL)) + 1UL : (len)) |
| | 148 | |
| | 149 | |
| | 150 | #if defined GUILE_USE_64_CALLS && GUILE_USE_64_CALLS && defined(HAVE_STAT64) |
| | 151 | #define CHOOSE_LARGEFILE(foo,foo64) foo64 |
| | 152 | #else |
| | 153 | #define CHOOSE_LARGEFILE(foo,foo64) foo |
| | 154 | #endif |
| | 155 | |
| | 156 | /* These names are a bit long, but they make it clear what they represent. */ |
| | 157 | #if SCM_HAVE_STRUCT_DIRENT64 == 1 |
| | 158 | # define dirent_or_dirent64 CHOOSE_LARGEFILE(dirent,dirent64) |
| | 159 | #else |
| | 160 | # define dirent_or_dirent64 dirent |
| | 161 | #endif |
| | 162 | #define fstat_or_fstat64 CHOOSE_LARGEFILE(fstat,fstat64) |
| | 163 | #define ftruncate_or_ftruncate64 CHOOSE_LARGEFILE(ftruncate,ftruncate64) |
| | 164 | #define lseek_or_lseek64 CHOOSE_LARGEFILE(lseek,lseek64) |
| | 165 | #define lstat_or_lstat64 CHOOSE_LARGEFILE(lstat,lstat64) |
| | 166 | #define off_t_or_off64_t CHOOSE_LARGEFILE(off_t,off64_t) |
| | 167 | #define open_or_open64 CHOOSE_LARGEFILE(open,open64) |
| | 168 | #define readdir_or_readdir64 CHOOSE_LARGEFILE(readdir,readdir64) |
| | 169 | #if SCM_HAVE_READDIR64_R == 1 |
| | 170 | # define readdir_r_or_readdir64_r CHOOSE_LARGEFILE(readdir_r,readdir64_r) |
| | 171 | #else |
| | 172 | # define readdir_r_or_readdir64_r readdir_r |
| | 173 | #endif |
| | 174 | #define stat_or_stat64 CHOOSE_LARGEFILE(stat,stat64) |
| | 175 | #define truncate_or_truncate64 CHOOSE_LARGEFILE(truncate,truncate64) |
| | 176 | #define scm_from_off_t_or_off64_t CHOOSE_LARGEFILE(scm_from_off_t,scm_from_int64) |
| | 177 | #define scm_from_ino_t_or_ino64_t CHOOSE_LARGEFILE(scm_from_ulong,scm_from_uint64) |
| | 178 | #define scm_from_blkcnt_t_or_blkcnt64_t CHOOSE_LARGEFILE(scm_from_ulong,scm_from_uint64) |
| | 179 | #define scm_to_off_t_or_off64_t CHOOSE_LARGEFILE(scm_to_off_t,scm_to_int64) |
| | 180 | |
| | 181 | #if SIZEOF_OFF_T == 4 |
| | 182 | # define scm_to_off_t scm_to_int32 |
| | 183 | # define scm_from_off_t scm_from_int32 |
| | 184 | #elif SIZEOF_OFF_T == 8 |
| | 185 | # define scm_to_off_t scm_to_int64 |
| | 186 | # define scm_from_off_t scm_from_int64 |
| | 187 | #else |
| | 188 | # error sizeof(off_t) is not 4 or 8. |
| | 189 | #endif |
| | 190 | #define scm_to_off64_t scm_to_int64 |
| | 191 | #define scm_from_off64_t scm_from_int64 |
| | 192 | |
| | 193 | |
| | 194 | \f |
| | 195 | |
| | 196 | #if defined (vms) |
| | 197 | /* VMS: Implement SCM_I_SETJMP in terms of setjump. */ |
| | 198 | extern int setjump(scm_i_jmp_buf env); |
| | 199 | extern int longjump(scm_i_jmp_buf env, int ret); |
| | 200 | #define SCM_I_SETJMP setjump |
| | 201 | #define SCM_I_LONGJMP longjump |
| | 202 | |
| | 203 | #elif defined (_CRAY1) |
| | 204 | /* Cray: Implement SCM_I_SETJMP in terms of setjump. */ |
| | 205 | extern int setjump(scm_i_jmp_buf env); |
| | 206 | extern int longjump(scm_i_jmp_buf env, int ret); |
| | 207 | #define SCM_I_SETJMP setjump |
| | 208 | #define SCM_I_LONGJMP longjump |
| | 209 | |
| | 210 | #elif defined (__ia64__) |
| | 211 | /* IA64: Implement SCM_I_SETJMP in terms of getcontext. */ |
| | 212 | # define SCM_I_SETJMP(JB) \ |
| | 213 | ( (JB).fresh = 1, \ |
| | 214 | getcontext (&((JB).ctx)), \ |
| | 215 | ((JB).fresh ? ((JB).fresh = 0, 0) : 1) ) |
| | 216 | # define SCM_I_LONGJMP(JB,VAL) scm_ia64_longjmp (&(JB), VAL) |
| | 217 | void scm_ia64_longjmp (scm_i_jmp_buf *, int); |
| | 218 | |
| | 219 | #else |
| | 220 | /* All other systems just use setjmp and longjmp. */ |
| | 221 | |
| | 222 | #define SCM_I_SETJMP setjmp |
| | 223 | #define SCM_I_LONGJMP longjmp |
| | 224 | #endif |
| | 225 | |
| | 226 | \f |
| | 227 | |
| | 228 | #define SCM_ASYNC_TICK_WITH_GUARD_CODE(thr, pre, post) \ |
| | 229 | do \ |
| | 230 | { \ |
| | 231 | if (SCM_UNLIKELY (thr->pending_asyncs)) \ |
| | 232 | { \ |
| | 233 | pre; \ |
| | 234 | scm_async_tick (); \ |
| | 235 | post; \ |
| | 236 | } \ |
| | 237 | } \ |
| | 238 | while (0) |
| | 239 | |
| | 240 | #define SCM_ASYNC_TICK_WITH_CODE(thr, stmt) \ |
| | 241 | SCM_ASYNC_TICK_WITH_GUARD_CODE (thr, stmt, (void) 0) |
| | 242 | #define SCM_ASYNC_TICK \ |
| | 243 | SCM_ASYNC_TICK_WITH_CODE (SCM_I_CURRENT_THREAD, (void) 0) |
| | 244 | |
| | 245 | |
| | 246 | \f |
| | 247 | |
| | 248 | #if (defined __GNUC__) |
| | 249 | # define SCM_NOINLINE __attribute__ ((__noinline__)) |
| | 250 | #else |
| | 251 | # define SCM_NOINLINE /* noinline */ |
| | 252 | #endif |
| | 253 | |
| | 254 | \f |
| | 255 | |
| | 256 | /* The endianness marker in objcode. */ |
| | 257 | #ifdef WORDS_BIGENDIAN |
| | 258 | # define SCM_OBJCODE_ENDIANNESS "BE" |
| | 259 | #else |
| | 260 | # define SCM_OBJCODE_ENDIANNESS "LE" |
| | 261 | #endif |
| | 262 | |
| | 263 | #define _SCM_CPP_STRINGIFY(x) # x |
| | 264 | #define SCM_CPP_STRINGIFY(x) _SCM_CPP_STRINGIFY (x) |
| | 265 | |
| | 266 | /* The word size marker in objcode. */ |
| | 267 | #define SCM_OBJCODE_WORD_SIZE SCM_CPP_STRINGIFY (SIZEOF_VOID_P) |
| | 268 | |
| | 269 | /* Major and minor versions must be single characters. */ |
| | 270 | #define SCM_OBJCODE_MAJOR_VERSION 3 |
| | 271 | #define SCM_OBJCODE_MINOR_VERSION 6 |
| | 272 | #define SCM_OBJCODE_MAJOR_VERSION_STRING \ |
| | 273 | SCM_CPP_STRINGIFY(SCM_OBJCODE_MAJOR_VERSION) |
| | 274 | #define SCM_OBJCODE_MINOR_VERSION_STRING \ |
| | 275 | SCM_CPP_STRINGIFY(SCM_OBJCODE_MINOR_VERSION) |
| | 276 | #define SCM_OBJCODE_VERSION_STRING \ |
| | 277 | SCM_OBJCODE_MAJOR_VERSION_STRING "." SCM_OBJCODE_MINOR_VERSION_STRING |
| | 278 | #define SCM_OBJCODE_MACHINE_VERSION_STRING \ |
| | 279 | SCM_OBJCODE_ENDIANNESS "-" SCM_OBJCODE_WORD_SIZE "-" SCM_OBJCODE_VERSION_STRING |
| | 280 | |
| | 281 | #endif /* SCM__SCM_H */ |
| | 282 | |
| | 283 | /* |
| | 284 | Local Variables: |
| | 285 | c-file-style: "gnu" |
| | 286 | End: |
| | 287 | */ |
HCoop / bpt / guile.git / blame_incremental