#ifndef __SCMH
#define __SCMH
-/* Copyright (C) 1995, 1996, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1998, 1999, 2000 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
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
\f
+
+/* "What's the difference between _scm.h and __scm.h?"
+
+ _scm.h is not installed; it's only visible to the libguile sources
+ themselves.
+
+ __scm.h is installed, and is #included by <libguile.h>. If both
+ the client and libguile need some piece of information, and it
+ doesn't fit well into the header file for any particular module, it
+ should go in __scm.h. */
+
+
/* {Supported Options}
*
* These may be defined or undefined.
*/
+/* Old async mechanism */
+/* #define GUILE_OLD_ASYNC_CLICK */
+
+/* New scheme for garbage collection */
+#define GUILE_NEW_GC_SCHEME
+
+/* #define GUILE_DEBUG_FREELIST */
+
/* If the compile FLAG `SCM_CAUTIOUS' is #defined then the number of
* arguments is always checked for application of closures. If the
* compile FLAG `SCM_RECKLESS' is #defined then they are not checked.
/* All the number support there is.
*/
-#define SCM_FLOATS
#define BIGNUMS
/* GC should relinquish empty cons-pair arenas.
*/
+#ifndef GUILE_NEW_GC_SCHEME
#define GC_FREE_SEGMENTS
+#endif
/* Provide a scheme-accessible count-down timer that
* generates a pseudo-interrupt.
*/
#undef ENGNOT
-/* Include support for uniform arrays?
- *
- * Possibly some of the initialization code depends on this
- * being defined, but that is a bug and should be fixed.
- */
-#define ARRAYS
-
#undef SCM_CAREFUL_INTS
\f
/* {Unsupported Options}
#define STACK_CHECKING
#undef NO_CEVAL_STACK_CHECKING
-#undef LONGLONGS
-
-/* Some auto-generated .h files contain unused prototypes
- * that need these typedefs.
- */
-typedef long long_long;
-typedef unsigned long ulong_long;
-
\f
/* What did the configure script discover about the outside world? */
#include "libguile/scmconfig.h"
-\f
-/* Write prototype declarations like this:
- int foo SCM_P ((int a, int b));
- At definitions, use K&R style declarations, but make sure there's a
- declarative prototype (as above) in scope. This will give you
- argument type checking, when available, and be harmless otherwise. */
-#ifdef __STDC__
-# define SCM_P(x) x
-#else
-# define SCM_P(x) ()
-#endif
+#ifdef HAVE_LONG_LONGS
+
+/* Some auto-generated .h files contain unused prototypes
+ * that need these typedefs.
+ */
+typedef long long long_long;
+typedef unsigned long long ulong_long;
+
+#endif /* HAVE_LONG_LONGS */
\f
#define SCM_THREAD_DEFER
#define SCM_THREAD_ALLOW
#define SCM_THREAD_REDEFER
-#define SCM_THREAD_REALLOW_1
-#define SCM_THREAD_REALLOW_2
#define SCM_THREAD_SWITCHING_CODE
#endif
+#ifdef GUILE_OLD_ASYNC_CLICK
extern unsigned int scm_async_clock;
#define SCM_ASYNC_TICK \
-{ \
+do { \
if (0 == --scm_async_clock) \
scm_async_click (); \
-} \
+} while(0)
+#else
+extern int scm_asyncs_pending_p;
+
+#define SCM_ASYNC_TICK /*fixme* should change names */ \
+do { \
+ if (scm_asyncs_pending_p) \
+ scm_async_click (); \
+} while (0)
+#endif
#ifdef SCM_CAREFUL_INTS
#define SCM_CHECK_NOT_DISABLED \
However, GCC's volatile asm feature forms a barrier over which code is
never moved. So if you add...
- asm volatile ("");
- ...to each of the DEFER_INTS and ALLOW_INTS macros, the critical code
- will always remain in place. */
+ asm ("");
+ ...to each of the DEFER_INTS and ALLOW_INTS macros, the critical
+ code will always remain in place. asm's without inputs or outputs
+ are implicitly volatile. */
#ifdef __GNUC__
-#define SCM_FENCE asm volatile ("")
+#define SCM_FENCE asm /* volatile */ ("")
#else
#define SCM_FENCE
#endif
#define SCM_DEFER_INTS \
-{ \
+do { \
SCM_FENCE; \
SCM_CHECK_NOT_DISABLED; \
SCM_THREAD_DEFER; \
SCM_FENCE; \
scm_ints_disabled = 1; \
SCM_FENCE; \
-} \
+} while (0)
#define SCM_ALLOW_INTS_ONLY \
-{ \
+do { \
SCM_THREAD_ALLOW; \
scm_ints_disabled = 0; \
-} \
+} while (0)
#define SCM_ALLOW_INTS \
-{ \
+do { \
SCM_FENCE; \
SCM_CHECK_NOT_ENABLED; \
SCM_THREAD_SWITCHING_CODE; \
scm_ints_disabled = 0; \
SCM_FENCE; \
SCM_THREAD_ALLOW; \
- SCM_ASYNC_TICK; \
SCM_FENCE; \
-} \
+} while (0)
#define SCM_REDEFER_INTS \
-{ \
+do { \
SCM_FENCE; \
SCM_THREAD_REDEFER; \
++scm_ints_disabled; \
SCM_FENCE; \
-} \
+} while (0)
#define SCM_REALLOW_INTS \
-{ \
+do { \
SCM_FENCE; \
- SCM_THREAD_REALLOW_1; \
SCM_THREAD_SWITCHING_CODE; \
SCM_FENCE; \
--scm_ints_disabled; \
- if (!scm_ints_disabled) \
- { \
- SCM_THREAD_REALLOW_2; \
- SCM_ASYNC_TICK; \
- } \
SCM_FENCE; \
-} \
+} while (0)
#define SCM_TICK \
-{ \
+do { \
SCM_DEFER_INTS; \
SCM_ALLOW_INTS; \
-} \
+ SCM_ASYNC_TICK; \
+} while (0)
\f
#ifdef SCM_RECKLESS
#define SCM_ASSERT(_cond, _arg, _pos, _subr)
+#define SCM_ASSERT_TYPE(_cond, _arg, _pos, _subr)
#define SCM_ASRTGO(_cond, _label)
#else
#define SCM_ASSERT(_cond, _arg, _pos, _subr) \
if (!(_cond)) \
scm_wta(_arg, (char *)(_pos), _subr)
+#define SCM_ASSERT_TYPE(_cond, _arg, _pos, _subr, _msg) \
+ if (!(_cond)) \
+ scm_wrong_type_arg_msg(_subr, _pos, _arg, _msg)
#define SCM_ASRTGO(_cond, _label) \
if (!(_cond)) \
goto _label
#endif
+/*
+ * SCM_WTA_DISPATCH
+ */
+
+extern SCM scm_call_generic_0 (SCM gf);
+
+#define SCM_WTA_DISPATCH_0(gf, arg, pos, subr) \
+ return ((gf) \
+ ? scm_call_generic_0 ((gf)) \
+ : scm_wta ((arg), (char *) (pos), (subr)))
+#define SCM_GASSERT0(cond, gf, arg, pos, subr) \
+ if (!(cond)) SCM_WTA_DISPATCH_0((gf), (arg), (pos), (subr))
+
+extern SCM scm_call_generic_1 (SCM gf, SCM a1);
+
+#define SCM_WTA_DISPATCH_1(gf, a1, pos, subr) \
+ return ((gf) \
+ ? scm_call_generic_1 ((gf), (a1)) \
+ : scm_wta ((a1), (char *) (pos), (subr)))
+#define SCM_GASSERT1(cond, gf, a1, pos, subr) \
+ if (!(cond)) SCM_WTA_DISPATCH_1((gf), (a1), (pos), (subr))
+
+extern SCM scm_call_generic_2 (SCM gf, SCM a1, SCM a2);
+
+#define SCM_WTA_DISPATCH_2(gf, a1, a2, pos, subr) \
+ return ((gf) \
+ ? scm_call_generic_2 ((gf), (a1), (a2)) \
+ : scm_wta ((pos) == SCM_ARG1 ? (a1) : (a2), (char *) (pos), (subr)))
+#define SCM_GASSERT2(cond, gf, a1, a2, pos, subr) \
+ if (!(cond)) SCM_WTA_DISPATCH_2((gf), (a1), (a2), (pos), (subr))
+
+extern SCM scm_apply_generic (SCM gf, SCM args);
+
+#define SCM_WTA_DISPATCH_n(gf, args, pos, subr) \
+ return ((gf) \
+ ? scm_apply_generic ((gf), (args)) \
+ : scm_wta (scm_list_ref ((args), SCM_MAKINUM ((pos) - 1)), \
+ (char *) (pos), \
+ (subr)))
+#define SCM_GASSERTn(cond, gf, args, pos, subr) \
+ if (!(cond)) SCM_WTA_DISPATCH_n((gf), (args), (pos), (subr))
+
+#ifndef SCM_MAGIC_SNARFER
+/* Let these macros pass through if
+ we are snarfing; thus we can tell the
+ difference between the use of an actual
+ number vs. the use of one of these macros --
+ actual numbers in SCM_VALIDATE_* and SCM_ASSERT
+ constructs must match the formal argument name,
+ but using SCM_ARG* avoids the test */
+
#define SCM_ARGn 0
#define SCM_ARG1 1
#define SCM_ARG2 2
/* #define SCM_STACK_OVFLOW 12 */
/* #define SCM_EXIT 13 */
+#endif /* SCM_MAGIC_SNARFER */
/* (...still matching scm_errmsgs) These
* are signals. Signals may become errors
\f
#endif /* __SCMH */
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/