#ifndef SCM___SCM_H
#define SCM___SCM_H
-/* Copyright (C) 1995,1996,1998,1999,2000,2001,2002,2003, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2006,
+ * 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* additional information to the developers.
*/
+/* Return true (non-zero) if GCC version MAJ.MIN or later is being used
+ * (macro taken from glibc.) */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define SCM_GNUC_PREREQ(maj, min) \
+ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+# define SCM_GNUC_PREREQ(maj, min) 0
+#endif
+
/* The macro SCM_NORETURN indicates that a function will never return.
* Examples:
* 1) int foo (char arg) SCM_NORETURN;
/* The SCM_EXPECT macros provide branch prediction hints to the compiler. To
* use only in places where the result of the expression under "normal"
* circumstances is known. */
-#if defined(__GNUC__) && (__GNUC__ >= 3)
+#if SCM_GNUC_PREREQ (3, 0)
# define SCM_EXPECT __builtin_expect
#else
# define SCM_EXPECT(_expr, _value) (_expr)
* or variables. Defining `SCM_BUILDING_DEPRECATED_CODE' allows deprecated
* functions to be implemented in terms of deprecated functions, and allows
* deprecated functions to be referred to by `scm_c_define_gsubr ()'. */
-#if !defined (SCM_BUILDING_DEPRECATED_CODE) \
- && defined (__GNUC__) && (__GNUC__ >= 3)
+#if !defined (SCM_BUILDING_DEPRECATED_CODE) && SCM_GNUC_PREREQ (3, 0)
# define SCM_DEPRECATED SCM_API __attribute__ ((__deprecated__))
#else
# define SCM_DEPRECATED SCM_API
#endif
+/* The SCM_ALIGNED macro, when defined, can be used to instruct the compiler
+ * to honor the given alignment constraint. */
+/* Sun Studio supports alignment since Sun Studio 12 */
+#if defined __GNUC__ || (defined( __SUNPRO_C ) && (__SUNPRO_C - 0 >= 0x590))
+# define SCM_ALIGNED(x) __attribute__ ((aligned (x)))
+#elif defined __INTEL_COMPILER
+# define SCM_ALIGNED(x) __declspec (align (x))
+#else
+/* Don't know how to align things. */
+# undef SCM_ALIGNED
+#endif
+
+/* The SCM_MALLOC macro can be used in function declarations to tell the
+ * compiler that a function may be treated as if any non-NULL pointer it returns
+ * cannot alias any other pointer valid when the function returns. */
+#if SCM_GNUC_PREREQ (3, 0)
+# define SCM_MALLOC __attribute__ ((__malloc__))
+#else
+# define SCM_MALLOC
+#endif
\f
/* {Supported Options}
/* #define GUILE_DEBUG_FREELIST */
-/* All the number support there is.
- */
-#define BIGNUMS
-
-/* GC should relinquish empty cons-pair arenas. */
-/* cmm:FIXME look at this after done mangling the GC */
-/* #define GC_FREE_SEGMENTS */
-
-/* Provide a scheme-accessible count-down timer that
- * generates a pseudo-interrupt.
- */
-#define TICKS
-
/* Use engineering notation when converting numbers strings?
*/
/* SCM_API is a macro prepended to all function and data definitions
which should be exported from libguile. */
-#if BUILDING_LIBGUILE && HAVE_VISIBILITY
+#if defined BUILDING_LIBGUILE && defined HAVE_VISIBILITY
# define SCM_API extern __attribute__((__visibility__("default")))
-#elif BUILDING_LIBGUILE && defined _MSC_VER
+#elif defined BUILDING_LIBGUILE && defined _MSC_VER
# define SCM_API __declspec(dllexport) extern
#elif defined _MSC_VER
# define SCM_API __declspec(dllimport) extern
\f
+/* We would like gnu89 extern inline semantics, not C99 extern inline
+ semantics, so that we can be sure to avoid reifying definitions of
+ inline functions in all compilation units, which is a possibility at
+ low optimization levels, or if a user takes the address of an inline
+ function.
+
+ Hence the `__gnu_inline__' attribute, in accordance with:
+ http://gcc.gnu.org/gcc-4.3/porting_to.html .
+
+ With GCC 4.2, `__GNUC_STDC_INLINE__' is never defined (because C99 inline
+ semantics are not supported), but a warning is issued in C99 mode if
+ `__gnu_inline__' is not used.
+
+ Apple's GCC build >5400 (since Xcode 3.0) doesn't support GNU inline in
+ C99 mode and doesn't define `__GNUC_STDC_INLINE__'. Fall back to "static
+ inline" in that case. */
+
+# if (defined __GNUC__) && (!(((defined __APPLE_CC__) && (__APPLE_CC__ > 5400)) && __STDC_VERSION__ >= 199901L))
+# if (defined __GNUC_STDC_INLINE__) || (__GNUC__ == 4 && __GNUC_MINOR__ == 2)
+# define SCM_C_EXTERN_INLINE \
+ extern __inline__ __attribute__ ((__gnu_inline__))
+# else
+# define SCM_C_EXTERN_INLINE extern __inline__
+# endif
+# endif
+
+/* SCM_INLINE is a macro prepended to all public inline function
+ declarations. Implementations of those functions should also be in
+ the header file, prefixed by SCM_INLINE_IMPLEMENTATION, and protected
+ by SCM_CAN_INLINE and a CPP define for the C file in question, like
+ SCM_INLINE_C_INCLUDING_INLINE_H. See inline.h for an example
+ usage. */
+
+#if defined SCM_IMPLEMENT_INLINES
+/* Reifying functions to a file, whether or not inlining is available. */
+# define SCM_CAN_INLINE 0
+# define SCM_INLINE SCM_API
+# define SCM_INLINE_IMPLEMENTATION
+#elif defined SCM_C_INLINE
+/* Declarations when inlining is available. */
+# define SCM_CAN_INLINE 1
+# ifdef SCM_C_EXTERN_INLINE
+# define SCM_INLINE SCM_C_EXTERN_INLINE
+# else
+/* Fall back to static inline if GNU "extern inline" is unavailable. */
+# define SCM_INLINE static SCM_C_INLINE
+# endif
+# define SCM_INLINE_IMPLEMENTATION SCM_INLINE
+#else
+/* Declarations when inlining is not available. */
+# define SCM_CAN_INLINE 0
+# define SCM_INLINE SCM_API
+/* Don't define SCM_INLINE_IMPLEMENTATION; it should never be seen in
+ this case. */
+#endif
+
+\f
+
/* {Debugging Options}
*
* These compile time options determine whether to include code that is only
#ifdef LONG_BIT
# define SCM_LONG_BIT LONG_BIT
#else
-# define SCM_LONG_BIT (SCM_CHAR_BIT * sizeof (long) / sizeof (char))
-#endif
-
-#ifdef UCHAR_MAX
-# define SCM_CHAR_CODE_LIMIT (UCHAR_MAX + 1L)
-#else
-# define SCM_CHAR_CODE_LIMIT 256L
+# define SCM_LONG_BIT (SCM_SIZEOF_LONG * 8)
#endif
#define SCM_I_UTYPE_MAX(type) ((type)-1)
#define SCM_T_INT32_MIN SCM_I_TYPE_MIN(scm_t_int32,SCM_T_UINT32_MAX)
#define SCM_T_INT32_MAX SCM_I_TYPE_MAX(scm_t_int32,SCM_T_UINT32_MAX)
-#if SCM_HAVE_T_INT64
#define SCM_T_UINT64_MAX SCM_I_UTYPE_MAX(scm_t_uint64)
#define SCM_T_INT64_MIN SCM_I_TYPE_MIN(scm_t_int64,SCM_T_UINT64_MAX)
#define SCM_T_INT64_MAX SCM_I_TYPE_MAX(scm_t_int64,SCM_T_UINT64_MAX)
-#endif
#if SCM_SIZEOF_LONG_LONG
#define SCM_I_ULLONG_MAX SCM_I_UTYPE_MAX(unsigned long long)
#define SCM_T_INTMAX_MIN SCM_I_TYPE_MIN(scm_t_intmax,SCM_T_UINTMAX_MAX)
#define SCM_T_INTMAX_MAX SCM_I_TYPE_MAX(scm_t_intmax,SCM_T_UINTMAX_MAX)
+#define SCM_T_UINTPTR_MAX SCM_I_UTYPE_MAX(scm_t_uintptr)
+#define SCM_T_INTPTR_MIN SCM_I_TYPE_MIN(scm_t_intptr,SCM_T_UINTPTR_MAX)
+#define SCM_T_INTPTR_MAX SCM_I_TYPE_MAX(scm_t_intptr,SCM_T_UINTPTR_MAX)
+
#define SCM_I_SIZE_MAX SCM_I_UTYPE_MAX(size_t)
#define SCM_I_SSIZE_MIN SCM_I_TYPE_MIN(ssize_t,SCM_I_SIZE_MAX)
#define SCM_I_SSIZE_MAX SCM_I_TYPE_MAX(ssize_t,SCM_I_SIZE_MAX)
#include "libguile/tags.h"
+
+/* The type of subrs, i.e., Scheme procedures implemented in C. Empty
+ function declarators are used internally for pointers to functions of
+ any arity. However, these are equivalent to `(void)' in C++, are
+ obsolescent as of C99, and trigger `strict-prototypes' GCC warnings
+ (bug #23681). */
+
+#ifdef BUILDING_LIBGUILE
+typedef SCM (* scm_t_subr) ();
+#else
+typedef void *scm_t_subr;
+#endif
+
\f
#ifdef vms
# ifndef CHEAP_CONTINUATIONS
#ifdef BUILDING_LIBGUILE
/* FIXME: should change names */
-# define SCM_ASYNC_TICK \
- do \
- { \
- if (SCM_I_CURRENT_THREAD->pending_asyncs) \
- scm_async_click (); \
- } \
+# define SCM_ASYNC_TICK \
+ do \
+ { \
+ if (SCM_UNLIKELY (SCM_I_CURRENT_THREAD->pending_asyncs)) \
+ scm_async_click (); \
+ } \
+ while (0)
+
+/* SCM_ASYNC_TICK_WITH_CODE is only available to Guile itself */
+# define SCM_ASYNC_TICK_WITH_CODE(thr, stmt) \
+ do \
+ { \
+ if (SCM_UNLIKELY (thr->pending_asyncs)) \
+ { \
+ stmt; \
+ scm_async_click (); \
+ } \
+ } \
while (0)
#else /* !BUILDING_LIBGUILE */
#ifdef SCM_RECKLESS
#define SCM_ASSERT(_cond, _arg, _pos, _subr)
#define SCM_ASSERT_TYPE(_cond, _arg, _pos, _subr, _msg)
-#define SCM_ASRTGO(_cond, _label)
#else
#define SCM_ASSERT(_cond, _arg, _pos, _subr) \
do { if (SCM_UNLIKELY (!(_cond))) \
#define SCM_ASSERT_TYPE(_cond, _arg, _pos, _subr, _msg) \
do { if (SCM_UNLIKELY (!(_cond))) \
scm_wrong_type_arg_msg(_subr, _pos, _arg, _msg); } while (0)
-#define SCM_ASRTGO(_cond, _label) \
- do { if (SCM_UNLIKELY (!(_cond))) \
- goto _label; } while (0)
#endif
/*
HCoop / bpt / guile.git / blobdiff