-/* classes: h_files */
-
-#ifndef SCM_INLINE_H
-#define SCM_INLINE_H
-
-/* Copyright (C) 2001, 2002 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 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.
- *
- * 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., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 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. */
-
-/* This file is for inline functions. On platforms that don't support
- inlining functions, they are turned into ordinary functions. See
- "inline.c".
-*/
-
-
-#if (SCM_DEBUG_CELL_ACCESSES == 1)
-#include <stdio.h>
-
-#endif
-
-#include "libguile/pairs.h"
-#include "libguile/gc.h"
-
-
-SCM_API SCM scm_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);
-
-#ifdef HAVE_INLINE
-
-#ifndef EXTERN_INLINE
-#define EXTERN_INLINE extern inline
-#endif
-
-extern unsigned scm_newcell2_count;
-extern unsigned scm_newcell_count;
-
-
-
-EXTERN_INLINE
-SCM
-scm_cell (scm_t_bits car, scm_t_bits cdr)
-{
- SCM z;
-
- if (SCM_NULLP (scm_i_freelist))
- {
- z = scm_gc_for_newcell (&scm_i_master_freelist, &scm_i_freelist);
- }
- else
- {
- z = scm_i_freelist;
- scm_i_freelist = SCM_FREE_CELL_CDR (scm_i_freelist);
- }
-
- /*
- We update scm_cells_allocated from this function. If we don't
- update this explicitly, we will have to walk a freelist somewhere
- later on, which seems a lot more expensive.
- */
- scm_cells_allocated += 1;
-
-#if (SCM_DEBUG_CELL_ACCESSES == 1)
- if (scm_debug_cell_accesses_p)
- {
- if (SCM_GC_MARK_P (z))
- {
- fprintf(stderr, "scm_cell tried to allocate a marked cell.\n");
- abort();
- }
- else if (SCM_GC_CELL_TYPE(z) != scm_tc_free_cell)
- {
- fprintf(stderr, "cell from freelist is not a free cell.\n");
- abort();
- }
- }
-
- /*
- Always set mark. Otherwise cells that are alloced before
- scm_debug_cell_accesses_p is toggled seem invalid.
- */
- SCM_SET_GC_MARK (z);
-
- /*
- TODO: figure out if this use of mark bits is valid with
- threading. What if another thread is doing GC at this point
- ... ?
- */
-
-#endif
-
-
- /* 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 for
- cooperating threads, but it might be important when we get true
- preemptive threads.
- */
- SCM_GC_SET_CELL_WORD (z, 1, cdr);
- SCM_GC_SET_CELL_WORD (z, 0, car);
-
-#if !defined(USE_COOP_THREADS) && !defined(USE_NULL_THREADS) && !defined(USE_COPT_THREADS)
- /* When we are using preemtive threads, we might need to make
- sure that the initial values for the slots are protected until
- the cell is completely initialized.
- */
-#error review me
- scm_remember_upto_here_1 (SCM_PACK (cdr));
-#endif
-
-
-#if (SCM_DEBUG_CELL_ACCESSES == 1)
- if (scm_expensive_debug_cell_accesses_p )
- scm_i_expensive_validation_check (z);
-#endif
-
- return z;
-}
-
-EXTERN_INLINE
-SCM
-scm_double_cell (scm_t_bits car, scm_t_bits cbr,
- scm_t_bits ccr, scm_t_bits cdr)
-{
- SCM z;
-
-
- if (SCM_NULLP (scm_i_freelist2))
- {
- z = scm_gc_for_newcell (&scm_i_master_freelist2, &scm_i_freelist2);
- }
- else
- {
- z = scm_i_freelist2;
- scm_i_freelist2 = SCM_FREE_CELL_CDR (scm_i_freelist2);
- }
-
- scm_cells_allocated += 2;
-
- /* 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 for
- cooperating threads, but it might be important when we get true
- preemptive threads.
- */
- 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);
-
-#if !defined(USE_COOP_THREADS) && !defined(USE_NULL_THREADS) && !defined(USE_COPT_THREADS)
- /* When we are using non-cooperating threads, we might need to make
- sure that the initial values for the slots are protected until
- the cell is completely initialized.
- */
-#error review me
- scm_remember_upto_here_3 (SCM_PACK (cbr), SCM_PACK (ccr), SCM_PACK (cdr));
-#endif
-
-
-#if (SCM_DEBUG_CELL_ACCESSES == 1)
- if (scm_debug_cell_accesses_p)
- {
- if (SCM_GC_MARK_P (z))
- {
- fprintf(stderr,
- "scm_double_cell tried to allocate a marked cell.\n");
- abort();
- }
- }
-
- /* see above. */
- SCM_SET_GC_MARK (z);
-
-#endif
-
- /* 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__
- asm volatile ("" : : : "memory");
-#else
- /* portable version, just in case any other compiler does the same
- thing. */
- scm_remember_upto_here_1 (z);
-#endif
-
- return z;
-}
-
-
-
-#endif
-#endif
+/* classes: h_files */
+
+#ifndef SCM_INLINE_H
+#define SCM_INLINE_H
+
+/* 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 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
+ * 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
+ */
+
+/* This file is for inline functions. On platforms that don't support
+ inlining functions, they are turned into ordinary functions. See
+ "inline.c".
+*/
+
+#include <stdio.h>
+#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/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 */
+
+
+#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);
+
+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
+ only need SCM_C_INLINE to be seen publically . */
+
+extern unsigned scm_newcell2_count;
+extern unsigned scm_newcell_count;
+
+
+#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))));
+
+ /* 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;
+}
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
+#endif
+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_t_bits ccr, scm_t_bits cdr)
+{
+ SCM z;
+
+ 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
+ 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);
+
+ /* 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__
+ __asm__ volatile ("" : : : "memory");
+#else
+ /* portable version, just in case any other compiler does the same
+ thing. */
+ scm_remember_upto_here_1 (z);
+#endif
+
+ return z;
+}
+
+#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__
+ __asm__ volatile ("" : : : "memory");
+#else
+ /* portable version, just in case any other compiler does the same
+ thing. */
+ scm_remember_upto_here_1 (z);
+#endif
+
+ 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);
+}
+
+#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);
+}
+
+#ifndef SCM_INLINE_C_INCLUDING_INLINE_H
+SCM_C_EXTERN_INLINE
+#endif
+int
+scm_is_pair (SCM x)
+{
+ /* The following "workaround_for_gcc_295" avoids bad code generated by
+ i386 gcc 2.95.4 (the Debian packaged 2.95.4-24 at least).
+
+ Under the default -O2 the inlined SCM_I_CONSP test gets "optimized" so
+ the fetch of the tag word from x is done before confirming it's a
+ non-immediate (SCM_NIMP). Needless to say that bombs badly if x is a
+ immediate. This was seen to afflict scm_srfi1_split_at and something
+ deep in the bowels of ceval(). In both cases segvs resulted from
+ deferencing a random immediate value. srfi-1.test exposes the problem
+ through a short list, the immediate being SCM_EOL in that case.
+ Something in syntax.test exposed the ceval() problem.
+
+ Just "volatile SCM workaround_for_gcc_295 = lst" is enough to avoid the
+ problem, without even using that variable. The "w=w" is just to
+ prevent a warning about it being unused.
+ */
+#if defined (__GNUC__) && __GNUC__ == 2 && __GNUC_MINOR__ == 95
+ volatile SCM workaround_for_gcc_295 = x;
+ workaround_for_gcc_295 = workaround_for_gcc_295;
+#endif
+
+ 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