X-Git-Url: http://git.hcoop.net/bpt/guile.git/blobdiff_plain/2b829bbb3d685ff780a0e3c0888d1d1231e2bc0e..8cb0d6d7fa9aaac316c29a64c541336b51b6f93d:/libguile/_scm.h diff --git a/libguile/_scm.h b/libguile/_scm.h index c2823a272..a5c2ba800 100644 --- a/libguile/_scm.h +++ b/libguile/_scm.h @@ -3,46 +3,24 @@ #ifndef SCM__SCM_H #define SCM__SCM_H -/* Copyright (C) 1995,1996,2000,2001, 2002, 2006 Free Software Foundation, Inc. +/* Copyright (C) 1995, 1996, 2000, 2001, 2002, 2006, 2008, 2009, 2010, + * 2011, 2013 Free Software Foundation, Inc. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * as published by the Free Software Foundation; either version 3 of + * the License, or (at your option) any later version. * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * This library is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this software; see the file COPYING. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301 USA - * - * As a special exception, the Free Software Foundation gives permission - * for additional uses of the text contained in its release of GUILE. - * - * The exception is that, if you link the GUILE library with other files - * to produce an executable, this does not by itself cause the - * resulting executable to be covered by the GNU General Public License. - * Your use of that executable is in no way restricted on account of - * linking the GUILE library code into it. - * - * This exception does not however invalidate any other reasons why - * the executable file might be covered by the GNU General Public License. - * - * This exception applies only to the code released by the - * Free Software Foundation under the name GUILE. If you copy - * code from other Free Software Foundation releases into a copy of - * GUILE, as the General Public License permits, the exception does - * not apply to the code that you add in this way. To avoid misleading - * anyone as to the status of such modified files, you must delete - * this exception notice from them. - * - * If you write modifications of your own for GUILE, it is your choice - * whether to permit this exception to apply to your modifications. - * If you do not wish that, delete this exception notice. */ + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301 USA + */ @@ -54,12 +32,39 @@ and differences between _scm.h and __scm.h. **********************************************************************/ +#if defined(__ia64) && !defined(__ia64__) +# define __ia64__ +#endif #if HAVE_CONFIG_H # include #endif +/* The size of `scm_t_bits'. */ +#define SIZEOF_SCM_T_BITS SIZEOF_VOID_P + +/* Undefine HAVE_STRUCT_TIMESPEC, because the libguile C code doesn't + need it anymore, and because on MinGW: + + - the definition of struct timespec is provided (if at all) by + pthread.h + + - pthread.h will _not_ define struct timespec if + HAVE_STRUCT_TIMESPEC is 1, because then it thinks that it doesn't + need to. + + The libguile C code doesn't need HAVE_STRUCT_TIMESPEC anymore, + because the value of HAVE_STRUCT_TIMESPEC has already been + incorporated in how scm_t_timespec is defined (in scmconfig.h), and + the rest of the libguile C code now just uses scm_t_timespec. + */ +#ifdef HAVE_STRUCT_TIMESPEC +#undef HAVE_STRUCT_TIMESPEC +#endif + #include +#include +#include #include "libguile/__scm.h" /* Include headers for those files central to the implementation. The @@ -76,30 +81,30 @@ #include "libguile/boolean.h" /* Everyone wonders about the truth. */ #include "libguile/threads.h" /* You are not alone. */ #include "libguile/snarf.h" /* Everyone snarfs. */ +#include "libguile/foreign.h" /* Snarfing needs the foreign data structures. */ +#include "libguile/programs.h" /* ... and program.h. */ #include "libguile/variable.h" #include "libguile/modules.h" #include "libguile/inline.h" +#include "libguile/strings.h" -/* SCM_SYSCALL retries system calls that have been interrupted (EINTR). - However this can be avoided if the operating system can restart - system calls automatically. We assume this is the case if - sigaction is available and SA_RESTART is defined; they will be used - when installing signal handlers. - */ - -#ifdef HAVE_RESTARTABLE_SYSCALLS -#if ! SCM_USE_PTHREAD_THREADS /* However, don't assume SA_RESTART - works with pthreads... */ -#define SCM_SYSCALL(line) line -#endif -#endif - +/* ASYNC_TICK after finding EINTR in order to handle pending signals, if + any. See comment in scm_syserror. */ #ifndef SCM_SYSCALL #ifdef vms # ifndef __GNUC__ # include -# define SCM_SYSCALL(line) do{errno = 0;line;} \ - while(EVMSERR==errno && (vaxc$errno>>3)==(SS$_CONTROLC>>3)) +# define SCM_SYSCALL(line) \ + do \ + { \ + errno = 0; \ + line; \ + if (EVMSERR == errno && (vaxc$errno>>3)==(SS$_CONTROLC>>3)) \ + SCM_ASYNC_TICK; \ + else \ + break; \ + } \ + while (1) # endif /* ndef __GNUC__ */ #endif /* def vms */ #endif /* ndef SCM_SYSCALL */ @@ -107,7 +112,18 @@ #ifndef SCM_SYSCALL # ifdef EINTR # if (EINTR > 0) -# define SCM_SYSCALL(line) do{errno = 0;line;}while(EINTR==errno) +# define SCM_SYSCALL(line) \ + do \ + { \ + errno = 0; \ + line; \ + if (errno == EINTR) \ + { \ + SCM_ASYNC_TICK; \ + errno = EINTR; \ + } \ + } \ + while (errno == EINTR) # endif /* (EINTR > 0) */ # endif /* def EINTR */ #endif /* ndef SCM_SYSCALL */ @@ -116,14 +132,6 @@ # define SCM_SYSCALL(line) line; #endif /* ndef SCM_SYSCALL */ -#if !defined (MSDOS) && !defined (__MINGW32__) -# ifdef ARM_ULIB - extern volatile int errno; -# else - extern int errno; -# endif /* def ARM_ULIB */ -#endif /* ndef MSDOS && ndef __MINGW32__*/ - #ifndef min @@ -133,23 +141,36 @@ #define max(A, B) ((A) >= (B) ? (A) : (B)) #endif +/* Return the first integer greater than or equal to LEN such that + LEN % ALIGN == 0. Return LEN if ALIGN is zero. */ +#define ROUND_UP(len, align) \ + ((align) ? (((len) - 1UL) | ((align) - 1UL)) + 1UL : (len)) -#if HAVE_STAT64 +#if defined GUILE_USE_64_CALLS && GUILE_USE_64_CALLS && defined(HAVE_STAT64) #define CHOOSE_LARGEFILE(foo,foo64) foo64 #else #define CHOOSE_LARGEFILE(foo,foo64) foo #endif /* These names are a bit long, but they make it clear what they represent. */ -#define dirent_or_dirent64 CHOOSE_LARGEFILE(dirent,dirent64) +#if SCM_HAVE_STRUCT_DIRENT64 == 1 +# define dirent_or_dirent64 CHOOSE_LARGEFILE(dirent,dirent64) +#else +# define dirent_or_dirent64 dirent +#endif #define fstat_or_fstat64 CHOOSE_LARGEFILE(fstat,fstat64) #define ftruncate_or_ftruncate64 CHOOSE_LARGEFILE(ftruncate,ftruncate64) +#define lseek_or_lseek64 CHOOSE_LARGEFILE(lseek,lseek64) #define lstat_or_lstat64 CHOOSE_LARGEFILE(lstat,lstat64) #define off_t_or_off64_t CHOOSE_LARGEFILE(off_t,off64_t) #define open_or_open64 CHOOSE_LARGEFILE(open,open64) #define readdir_or_readdir64 CHOOSE_LARGEFILE(readdir,readdir64) -#define readdir_r_or_readdir64_r CHOOSE_LARGEFILE(readdir_r,readdir64_r) +#if SCM_HAVE_READDIR64_R == 1 +# define readdir_r_or_readdir64_r CHOOSE_LARGEFILE(readdir_r,readdir64_r) +#else +# define readdir_r_or_readdir64_r readdir_r +#endif #define stat_or_stat64 CHOOSE_LARGEFILE(stat,stat64) #define truncate_or_truncate64 CHOOSE_LARGEFILE(truncate,truncate64) #define scm_from_off_t_or_off64_t CHOOSE_LARGEFILE(scm_from_off_t,scm_from_int64) @@ -158,17 +179,54 @@ #define scm_to_off_t_or_off64_t CHOOSE_LARGEFILE(scm_to_off_t,scm_to_int64) #if SIZEOF_OFF_T == 4 -#define scm_to_off_t scm_to_int32 -#define scm_from_off_t scm_from_int32 +# define scm_to_off_t scm_to_int32 +# define scm_from_off_t scm_from_int32 +#elif SIZEOF_OFF_T == 8 +# define scm_to_off_t scm_to_int64 +# define scm_from_off_t scm_from_int64 #else -#if SIZEOF_OFF_T == 8 -#define scm_to_off_t scm_to_int64 -#define scm_from_off_t scm_from_int64 +# error sizeof(off_t) is not 4 or 8. +#endif +#define scm_to_off64_t scm_to_int64 +#define scm_from_off64_t scm_from_int64 + +#if (defined __GNUC__) +# define SCM_NOINLINE __attribute__ ((__noinline__)) #else -#error sizeof(off_t) is not 4 or 8. +# define SCM_NOINLINE /* noinline */ #endif + +/* The endianness marker in objcode. */ +#ifdef WORDS_BIGENDIAN +# define SCM_OBJCODE_ENDIANNESS "BE" +#else +# define SCM_OBJCODE_ENDIANNESS "LE" #endif +#define _SCM_CPP_STRINGIFY(x) # x +#define SCM_CPP_STRINGIFY(x) _SCM_CPP_STRINGIFY (x) + +/* The word size marker in objcode. */ +#define SCM_OBJCODE_WORD_SIZE SCM_CPP_STRINGIFY (SIZEOF_VOID_P) + +/* Major and minor versions must be single characters. */ +#define SCM_OBJCODE_MAJOR_VERSION 2 +#define SCM_OBJCODE_MINOR_VERSION 0 +#define SCM_OBJCODE_MAJOR_VERSION_STRING \ + SCM_CPP_STRINGIFY(SCM_OBJCODE_MAJOR_VERSION) +#define SCM_OBJCODE_MINOR_VERSION_STRING \ + SCM_CPP_STRINGIFY(SCM_OBJCODE_MINOR_VERSION) +#define SCM_OBJCODE_VERSION_STRING \ + SCM_OBJCODE_MAJOR_VERSION_STRING "." SCM_OBJCODE_MINOR_VERSION_STRING +#define SCM_OBJCODE_MACHINE_VERSION_STRING \ + SCM_OBJCODE_ENDIANNESS "-" SCM_OBJCODE_WORD_SIZE "-" SCM_OBJCODE_VERSION_STRING + +/* The objcode magic header. */ +#define SCM_OBJCODE_COOKIE \ + "GOOF----" SCM_OBJCODE_MACHINE_VERSION_STRING +#define SCM_OBJCODE_ENDIANNESS_OFFSET 8 +#define SCM_OBJCODE_WORD_SIZE_OFFSET 11 + #endif /* SCM__SCM_H */