#ifndef SCM_INLINE_H
#define SCM_INLINE_H
-/* Copyright (C) 2001, 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2002, 2003, 2004, 2006, 2008 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 as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * 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 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
*/
/* This file is for inline functions. On platforms that don't support
"inline.c".
*/
-#include "libguile/__scm.h"
-
-#if (SCM_DEBUG_CELL_ACCESSES == 1)
#include <stdio.h>
-#endif
+#include <string.h>
+
+#include "libguile/__scm.h"
#include "libguile/pairs.h"
#include "libguile/gc.h"
#include "libguile/threads.h"
#include "libguile/unif.h"
-#include "libguile/pairs.h"
+#include "libguile/ports.h"
+#include "libguile/error.h"
+
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+
+/* GCC has `__inline__' in all modes, including strict ansi. GCC 4.3 and
+ above with `-std=c99' or `-std=gnu99' implements ISO C99 inline semantics,
+ unless `-fgnu89-inline' is used. Here we want GNU "extern inline"
+ semantics, 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))
+# define SCM_C_USE_EXTERN_INLINE 1
+# 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
+# elif (defined SCM_C_INLINE)
+# define SCM_C_EXTERN_INLINE static SCM_C_INLINE
+# endif
+
+#endif /* SCM_INLINE_C_INCLUDING_INLINE_H */
-#include <gc/gc.h>
+#if (!defined SCM_C_INLINE) || (defined SCM_INLINE_C_INCLUDING_INLINE_H) \
+ || (defined SCM_C_USE_EXTERN_INLINE)
+
+/* The `extern' declarations. They should only appear when used from
+ "inline.c", when `inline' is not supported at all or when "extern inline"
+ is used. */
+
+#include "libguile/boehm-gc.h"
SCM_API SCM scm_cell (scm_t_bits car, scm_t_bits cdr);
+SCM_API SCM scm_immutable_cell (scm_t_bits car, scm_t_bits cdr);
SCM_API SCM scm_double_cell (scm_t_bits car, scm_t_bits cbr,
scm_t_bits ccr, scm_t_bits cdr);
+SCM_API SCM scm_immutable_double_cell (scm_t_bits car, scm_t_bits cbr,
+ scm_t_bits ccr, scm_t_bits cdr);
SCM_API SCM scm_array_handle_ref (scm_t_array_handle *h, ssize_t pos);
SCM_API void scm_array_handle_set (scm_t_array_handle *h, ssize_t pos, SCM val);
+SCM_API int scm_is_pair (SCM x);
-#if defined SCM_C_INLINE || defined SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_API int scm_getc (SCM port);
+SCM_API void scm_putc (char c, SCM port);
+SCM_API void scm_puts (const char *str_data, SCM port);
+
+#endif
+
+
+#if defined SCM_C_EXTERN_INLINE || defined SCM_INLINE_C_INCLUDING_INLINE_H
/* either inlining, or being included from inline.c. We use (and
repeat) this long #if test here and below so that we don't have to
introduce any extraneous symbols into the public namespace. We
extern unsigned scm_newcell2_count;
extern unsigned scm_newcell_count;
-#if defined SCM_C_INLINE && ! defined SCM_INLINE_C_INCLUDING_INLINE_H
-/* definitely inlining */
-#ifdef __GNUC__
-extern
-#else
-static
-#endif
-SCM_C_INLINE
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
#endif
SCM
scm_cell (scm_t_bits car, scm_t_bits cdr)
{
- SCM cell = SCM_PACK ((scm_t_bits) (GC_malloc (sizeof (scm_t_cell))));
+ SCM cell = SCM_PACK ((scm_t_bits) (GC_MALLOC (sizeof (scm_t_cell))));
- SCM_GC_SET_CELL_WORD (cell, 0, car);
+ /* Initialize the type slot last so that the cell is ignored by the GC
+ until it is completely initialized. This is only relevant when the GC
+ can actually run during this code, which it can't since the GC only runs
+ when all other threads are stopped. */
SCM_GC_SET_CELL_WORD (cell, 1, cdr);
+ SCM_GC_SET_CELL_WORD (cell, 0, car);
return cell;
}
-#if defined SCM_C_INLINE && ! defined SCM_INLINE_C_INCLUDING_INLINE_H
-/* definitely inlining */
-#ifdef __GNUC__
-extern
-#else
-static
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
#endif
-SCM_C_INLINE
+SCM
+scm_immutable_cell (scm_t_bits car, scm_t_bits cdr)
+{
+ SCM cell = SCM_PACK ((scm_t_bits) (GC_MALLOC_STUBBORN (sizeof (scm_t_cell))));
+
+ /* Initialize the type slot last so that the cell is ignored by the GC
+ until it is completely initialized. This is only relevant when the GC
+ can actually run during this code, which it can't since the GC only runs
+ when all other threads are stopped. */
+ SCM_GC_SET_CELL_WORD (cell, 1, cdr);
+ SCM_GC_SET_CELL_WORD (cell, 0, car);
+
+ GC_END_STUBBORN_CHANGE ((void *) cell);
+
+ return cell;
+}
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
#endif
SCM
scm_double_cell (scm_t_bits car, scm_t_bits cbr,
{
SCM z;
- z = SCM_PACK ((scm_t_bits) (GC_malloc (2 * sizeof (scm_t_cell))));
+ z = SCM_PACK ((scm_t_bits) (GC_MALLOC (2 * sizeof (scm_t_cell))));
/* Initialize the type slot last so that the cell is ignored by the
GC until it is completely initialized. This is only relevant
when the GC can actually run during this code, which it can't
return z;
}
-#if defined SCM_C_INLINE && ! defined SCM_INLINE_C_INCLUDING_INLINE_H
-/* definitely inlining */
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
+#endif
+SCM
+scm_immutable_double_cell (scm_t_bits car, scm_t_bits cbr,
+ scm_t_bits ccr, scm_t_bits cdr)
+{
+ SCM z;
+
+ z = SCM_PACK ((scm_t_bits) (GC_MALLOC_STUBBORN (2 * sizeof (scm_t_cell))));
+ /* Initialize the type slot last so that the cell is ignored by the
+ GC until it is completely initialized. This is only relevant
+ when the GC can actually run during this code, which it can't
+ since the GC only runs when all other threads are stopped.
+ */
+ SCM_GC_SET_CELL_WORD (z, 1, cbr);
+ SCM_GC_SET_CELL_WORD (z, 2, ccr);
+ SCM_GC_SET_CELL_WORD (z, 3, cdr);
+ SCM_GC_SET_CELL_WORD (z, 0, car);
+
+ GC_END_STUBBORN_CHANGE ((void *) z);
+
+ /* When this function is inlined, it's possible that the last
+ SCM_GC_SET_CELL_WORD above will be adjacent to a following
+ initialization of z. E.g., it occurred in scm_make_real. GCC
+ from around version 3 (e.g., certainly 3.2) began taking
+ advantage of strict C aliasing rules which say that it's OK to
+ interchange the initialization above and the one below when the
+ pointer types appear to differ sufficiently. We don't want that,
+ of course. GCC allows this behaviour to be disabled with the
+ -fno-strict-aliasing option, but would also need to be supplied
+ by Guile users. Instead, the following statements prevent the
+ reordering.
+ */
#ifdef __GNUC__
-extern
+ __asm__ volatile ("" : : : "memory");
#else
-static
+ /* portable version, just in case any other compiler does the same
+ thing. */
+ scm_remember_upto_here_1 (z);
#endif
-SCM_C_INLINE
+
+ return z;
+}
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
#endif
SCM
scm_array_handle_ref (scm_t_array_handle *h, ssize_t p)
return h->ref (h, p);
}
-#if defined SCM_C_INLINE && ! defined SCM_INLINE_C_INCLUDING_INLINE_H
-/* definitely inlining */
-#ifdef __GNUC__
-extern
-#else
-static
-#endif
-SCM_C_INLINE
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
#endif
void
scm_array_handle_set (scm_t_array_handle *h, ssize_t p, SCM v)
h->set (h, p, v);
}
-#if defined SCM_C_INLINE && ! defined SCM_INLINE_C_INCLUDING_INLINE_H
-/* definitely inlining */
-#ifdef __GNUC__
-extern
-#else
-static
-#endif
-SCM_C_INLINE
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
#endif
int
scm_is_pair (SCM x)
return SCM_I_CONSP (x);
}
+
+/* Port I/O. */
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
+#endif
+int
+scm_getc (SCM port)
+{
+ int c;
+ scm_t_port *pt = SCM_PTAB_ENTRY (port);
+
+ if (pt->rw_active == SCM_PORT_WRITE)
+ /* may be marginally faster than calling scm_flush. */
+ scm_ptobs[SCM_PTOBNUM (port)].flush (port);
+
+ if (pt->rw_random)
+ pt->rw_active = SCM_PORT_READ;
+
+ if (pt->read_pos >= pt->read_end)
+ {
+ if (scm_fill_input (port) == EOF)
+ return EOF;
+ }
+
+ c = *(pt->read_pos++);
+
+ switch (c)
+ {
+ case '\a':
+ break;
+ case '\b':
+ SCM_DECCOL (port);
+ break;
+ case '\n':
+ SCM_INCLINE (port);
+ break;
+ case '\r':
+ SCM_ZEROCOL (port);
+ break;
+ case '\t':
+ SCM_TABCOL (port);
+ break;
+ default:
+ SCM_INCCOL (port);
+ break;
+ }
+
+ return c;
+}
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
+#endif
+void
+scm_putc (char c, SCM port)
+{
+ SCM_ASSERT_TYPE (SCM_OPOUTPORTP (port), port, 0, NULL, "output port");
+ scm_lfwrite (&c, 1, port);
+}
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
+#endif
+void
+scm_puts (const char *s, SCM port)
+{
+ SCM_ASSERT_TYPE (SCM_OPOUTPORTP (port), port, 0, NULL, "output port");
+ scm_lfwrite (s, strlen (s), port);
+}
+
+
#endif
#endif
HCoop / bpt / guile.git / blobdiff