/* obstack.c - subroutines used implicitly by object stack macros
- Copyright (C) 1988, 89, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
+ Copyright (C) 1988-1994,96,97,98,1999, 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 the
-Free Software Foundation; either version 2, or (at your option) any
-later version.
+ This file is part of the GNU C Library. Its master source is NOT part of
+ the C library, however. The master source lives in /gd/gnu/lib.
-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.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ The GNU C 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
#include "obstack.h"
-/* This is just to get __GNU_LIBRARY__ defined. */
-#include <stdio.h>
+/* NOTE BEFORE MODIFYING THIS FILE: This version number must be
+ incremented whenever callers compiled using an old obstack.h can no
+ longer properly call the functions in this obstack.c. */
+#define OBSTACK_INTERFACE_VERSION 1
/* Comment out all this code if we are using the GNU C Library, and are not
- actually compiling the library itself. This code is part of the GNU C
- Library, but also included in many other GNU distributions. Compiling
+ actually compiling the library itself, and the installed library
+ supports the same library interface we do. This code is part of the GNU
+ C Library, but also included in many other GNU distributions. Compiling
and linking in this code is a waste when using the GNU C library
(especially if it is a shared library). Rather than having every GNU
- program understand `configure --with-gnu-libc' and omit the object files,
- it is simpler to just do this in the source for each such file. */
+ program understand `configure --with-gnu-libc' and omit the object
+ files, it is simpler to just do this in the source for each such file. */
+
+#include <stdio.h> /* Random thing to get __GNU_LIBRARY__. */
+#if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
+# include <gnu-versions.h>
+# if _GNU_OBSTACK_INTERFACE_VERSION == OBSTACK_INTERFACE_VERSION
+# define ELIDE_CODE
+# endif
+#endif
-#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
+#ifndef ELIDE_CODE
-#ifdef __STDC__
-#define POINTER void *
-#else
-#define POINTER char *
-#endif
+
+# if defined (__STDC__) && __STDC__
+# define POINTER void *
+# else
+# define POINTER char *
+# endif
/* Determine default alignment. */
struct fooalign {char x; double d;};
-#define DEFAULT_ALIGNMENT \
- ((PTR_INT_TYPE) ((char *)&((struct fooalign *) 0)->d - (char *)0))
+# define DEFAULT_ALIGNMENT \
+ ((PTR_INT_TYPE) ((char *) &((struct fooalign *) 0)->d - (char *) 0))
/* If malloc were really smart, it would round addresses to DEFAULT_ALIGNMENT.
But in fact it might be less smart and round addresses to as much as
DEFAULT_ROUNDING. So we prepare for it to do that. */
union fooround {long x; double d;};
-#define DEFAULT_ROUNDING (sizeof (union fooround))
+# define DEFAULT_ROUNDING (sizeof (union fooround))
/* When we copy a long block of data, this is the unit to do it with.
On some machines, copying successive ints does not work;
in such a case, redefine COPYING_UNIT to `long' (if that works)
or `char' as a last resort. */
-#ifndef COPYING_UNIT
-#define COPYING_UNIT int
-#endif
+# ifndef COPYING_UNIT
+# define COPYING_UNIT int
+# endif
+
+
+/* The functions allocating more room by calling `obstack_chunk_alloc'
+ jump to the handler pointed to by `obstack_alloc_failed_handler'.
+ This can be set to a user defined function which should either
+ abort gracefully or use longjump - but shouldn't return. This
+ variable by default points to the internal function
+ `print_and_abort'. */
+# if defined (__STDC__) && __STDC__
+static void print_and_abort (void);
+void (*obstack_alloc_failed_handler) (void) = print_and_abort;
+# else
+static void print_and_abort ();
+void (*obstack_alloc_failed_handler) () = print_and_abort;
+# endif
+
+/* Exit value used when `print_and_abort' is used. */
+# if defined __GNU_LIBRARY__ || defined HAVE_STDLIB_H
+# include <stdlib.h>
+# endif
+# ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+# endif
+int obstack_exit_failure = EXIT_FAILURE;
/* The non-GNU-C macros copy the obstack into this global variable
to avoid multiple evaluation. */
For free, do not use ?:, since some compilers, like the MIPS compilers,
do not allow (expr) ? void : void. */
-#define CALL_CHUNKFUN(h, size) \
+# if defined (__STDC__) && __STDC__
+# define CALL_CHUNKFUN(h, size) \
+ (((h) -> use_extra_arg) \
+ ? (*(h)->chunkfun) ((h)->extra_arg, (size)) \
+ : (*(struct _obstack_chunk *(*) (long)) (h)->chunkfun) ((size)))
+
+# define CALL_FREEFUN(h, old_chunk) \
+ do { \
+ if ((h) -> use_extra_arg) \
+ (*(h)->freefun) ((h)->extra_arg, (old_chunk)); \
+ else \
+ (*(void (*) (void *)) (h)->freefun) ((old_chunk)); \
+ } while (0)
+# else
+# define CALL_CHUNKFUN(h, size) \
(((h) -> use_extra_arg) \
? (*(h)->chunkfun) ((h)->extra_arg, (size)) \
- : (*(h)->chunkfun) ((size)))
+ : (*(struct _obstack_chunk *(*) ()) (h)->chunkfun) ((size)))
-#define CALL_FREEFUN(h, old_chunk) \
+# define CALL_FREEFUN(h, old_chunk) \
do { \
if ((h) -> use_extra_arg) \
(*(h)->freefun) ((h)->extra_arg, (old_chunk)); \
else \
- (*(h)->freefun) ((old_chunk)); \
+ (*(void (*) ()) (h)->freefun) ((old_chunk)); \
} while (0)
+# endif
\f
/* Initialize an obstack H for use. Specify chunk size SIZE (0 means default).
CHUNKFUN is the function to use to allocate chunks,
and FREEFUN the function to free them.
- Return nonzero if successful, zero if out of memory.
- To recover from an out of memory error,
- free up some memory, then call this again. */
+ Return nonzero if successful, calls obstack_alloc_failed_handler if
+ allocation fails. */
int
_obstack_begin (h, size, alignment, chunkfun, freefun)
struct obstack *h;
int size;
int alignment;
+# if defined (__STDC__) && __STDC__
+ POINTER (*chunkfun) (long);
+ void (*freefun) (void *);
+# else
POINTER (*chunkfun) ();
void (*freefun) ();
+# endif
{
- register struct _obstack_chunk* chunk; /* points to new chunk */
+ register struct _obstack_chunk *chunk; /* points to new chunk */
if (alignment == 0)
- alignment = DEFAULT_ALIGNMENT;
+ alignment = (int) DEFAULT_ALIGNMENT;
if (size == 0)
/* Default size is what GNU malloc can fit in a 4096-byte block. */
{
size = 4096 - extra;
}
+# if defined (__STDC__) && __STDC__
+ h->chunkfun = (struct _obstack_chunk * (*)(void *, long)) chunkfun;
+ h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
+# else
h->chunkfun = (struct _obstack_chunk * (*)()) chunkfun;
h->freefun = freefun;
+# endif
h->chunk_size = size;
h->alignment_mask = alignment - 1;
h->use_extra_arg = 0;
chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
if (!chunk)
- {
- h->alloc_failed = 1;
- return 0;
- }
- h->alloc_failed = 0;
+ (*obstack_alloc_failed_handler) ();
h->next_free = h->object_base = chunk->contents;
h->chunk_limit = chunk->limit
= (char *) chunk + h->chunk_size;
chunk->prev = 0;
/* The initial chunk now contains no empty object. */
h->maybe_empty_object = 0;
+ h->alloc_failed = 0;
return 1;
}
struct obstack *h;
int size;
int alignment;
+# if defined (__STDC__) && __STDC__
+ POINTER (*chunkfun) (POINTER, long);
+ void (*freefun) (POINTER, POINTER);
+# else
POINTER (*chunkfun) ();
void (*freefun) ();
+# endif
POINTER arg;
{
- register struct _obstack_chunk* chunk; /* points to new chunk */
+ register struct _obstack_chunk *chunk; /* points to new chunk */
if (alignment == 0)
- alignment = DEFAULT_ALIGNMENT;
+ alignment = (int) DEFAULT_ALIGNMENT;
if (size == 0)
/* Default size is what GNU malloc can fit in a 4096-byte block. */
{
size = 4096 - extra;
}
+# if defined(__STDC__) && __STDC__
+ h->chunkfun = (struct _obstack_chunk * (*)(void *,long)) chunkfun;
+ h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
+# else
h->chunkfun = (struct _obstack_chunk * (*)()) chunkfun;
h->freefun = freefun;
+# endif
h->chunk_size = size;
h->alignment_mask = alignment - 1;
h->extra_arg = arg;
chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
if (!chunk)
- {
- h->alloc_failed = 1;
- return 0;
- }
- h->alloc_failed = 0;
+ (*obstack_alloc_failed_handler) ();
h->next_free = h->object_base = chunk->contents;
h->chunk_limit = chunk->limit
= (char *) chunk + h->chunk_size;
chunk->prev = 0;
/* The initial chunk now contains no empty object. */
h->maybe_empty_object = 0;
+ h->alloc_failed = 0;
return 1;
}
struct obstack *h;
int length;
{
- register struct _obstack_chunk* old_chunk = h->chunk;
- register struct _obstack_chunk* new_chunk;
+ register struct _obstack_chunk *old_chunk = h->chunk;
+ register struct _obstack_chunk *new_chunk;
register long new_size;
- register int obj_size = h->next_free - h->object_base;
- register int i;
- int already;
+ register long obj_size = h->next_free - h->object_base;
+ register long i;
+ long already;
/* Compute size for new chunk. */
new_size = (obj_size + length) + (obj_size >> 3) + 100;
/* Allocate and initialize the new chunk. */
new_chunk = CALL_CHUNKFUN (h, new_size);
if (!new_chunk)
- {
- h->alloc_failed = 1;
- return;
- }
- h->alloc_failed = 0;
+ (*obstack_alloc_failed_handler) ();
h->chunk = new_chunk;
new_chunk->prev = old_chunk;
new_chunk->limit = h->chunk_limit = (char *) new_chunk + new_size;
This is here for debugging.
If you use it in a program, you are probably losing. */
-#ifdef __STDC__
+# if defined (__STDC__) && __STDC__
/* Suppress -Wmissing-prototypes warning. We don't want to declare this in
obstack.h because it is just for debugging. */
int _obstack_allocated_p (struct obstack *h, POINTER obj);
-#endif
+# endif
int
_obstack_allocated_p (h, obj)
struct obstack *h;
POINTER obj;
{
- register struct _obstack_chunk* lp; /* below addr of any objects in this chunk */
- register struct _obstack_chunk* plp; /* point to previous chunk if any */
+ register struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
+ register struct _obstack_chunk *plp; /* point to previous chunk if any */
lp = (h)->chunk;
/* We use >= rather than > since the object cannot be exactly at
the beginning of the chunk but might be an empty object exactly
- at the end of an adjacent chunk. */
- while (lp != 0 && ((POINTER)lp >= obj || (POINTER)(lp)->limit < obj))
+ at the end of an adjacent chunk. */
+ while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
{
plp = lp->prev;
lp = plp;
/* Free objects in obstack H, including OBJ and everything allocate
more recently than OBJ. If OBJ is zero, free everything in H. */
-#undef obstack_free
+# undef obstack_free
/* This function has two names with identical definitions.
This is the first one, called from non-ANSI code. */
struct obstack *h;
POINTER obj;
{
- register struct _obstack_chunk* lp; /* below addr of any objects in this chunk */
- register struct _obstack_chunk* plp; /* point to previous chunk if any */
+ register struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
+ register struct _obstack_chunk *plp; /* point to previous chunk if any */
lp = h->chunk;
/* We use >= because there cannot be an object at the beginning of a chunk.
But there can be an empty object at that address
at the end of another chunk. */
- while (lp != 0 && ((POINTER)lp >= obj || (POINTER)(lp)->limit < obj))
+ while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
{
plp = lp->prev;
CALL_FREEFUN (h, lp);
}
if (lp)
{
- h->object_base = h->next_free = (char *)(obj);
+ h->object_base = h->next_free = (char *) (obj);
h->chunk_limit = lp->limit;
h->chunk = lp;
}
struct obstack *h;
POINTER obj;
{
- register struct _obstack_chunk* lp; /* below addr of any objects in this chunk */
- register struct _obstack_chunk* plp; /* point to previous chunk if any */
+ register struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
+ register struct _obstack_chunk *plp; /* point to previous chunk if any */
lp = h->chunk;
/* We use >= because there cannot be an object at the beginning of a chunk.
But there can be an empty object at that address
at the end of another chunk. */
- while (lp != 0 && ((POINTER)lp >= obj || (POINTER)(lp)->limit < obj))
+ while (lp != 0 && ((POINTER) lp >= obj || (POINTER) (lp)->limit < obj))
{
plp = lp->prev;
CALL_FREEFUN (h, lp);
}
if (lp)
{
- h->object_base = h->next_free = (char *)(obj);
+ h->object_base = h->next_free = (char *) (obj);
h->chunk_limit = lp->limit;
h->chunk = lp;
}
abort ();
}
\f
-#if 0
+int
+_obstack_memory_used (h)
+ struct obstack *h;
+{
+ register struct _obstack_chunk* lp;
+ register int nbytes = 0;
+
+ for (lp = h->chunk; lp != 0; lp = lp->prev)
+ {
+ nbytes += lp->limit - (char *) lp;
+ }
+ return nbytes;
+}
+\f
+/* Define the error handler. */
+# ifndef _
+# ifdef HAVE_LIBINTL_H
+# include <libintl.h>
+# ifndef _
+# define _(Str) gettext (Str)
+# endif
+# else
+# define _(Str) (Str)
+# endif
+# endif
+# if defined _LIBC && defined USE_IN_LIBIO
+# include <libio/iolibio.h>
+# define fputs(s, f) _IO_fputs (s, f)
+# endif
+
+static void
+print_and_abort ()
+{
+ fputs (_("virtual memory exhausted"), stderr);
+ fputc ('\n', stderr);
+ exit (obstack_exit_failure);
+}
+\f
+# if 0
/* These are now turned off because the applications do not use it
and it uses bcopy via obstack_grow, which causes trouble on sysV. */
/* Now define the functional versions of the obstack macros.
Define them to simply use the corresponding macros to do the job. */
-#ifdef __STDC__
+# if defined (__STDC__) && __STDC__
/* These function definitions do not work with non-ANSI preprocessors;
they won't pass through the macro names in parentheses. */
return obstack_room (obstack);
}
+int (obstack_make_room) (obstack, length)
+ struct obstack *obstack;
+ int length;
+{
+ return obstack_make_room (obstack, length);
+}
+
void (obstack_grow) (obstack, pointer, length)
struct obstack *obstack;
POINTER pointer;
return obstack_copy0 (obstack, pointer, length);
}
-#endif /* __STDC__ */
+# endif /* __STDC__ */
-#endif /* 0 */
+# endif /* 0 */
-#endif /* _LIBC or not __GNU_LIBRARY__. */
+#endif /* !ELIDE_CODE */
projects / gnulib.git / blobdiff