/* obstack.c - subroutines used implicitly by object stack macros
- Copyright (C) 1988-2013 Free Software Foundation, Inc.
+ Copyright (C) 1988-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
<http://www.gnu.org/licenses/>. */
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
#ifdef _LIBC
# include <obstack.h>
# include <shlib-compat.h>
#else
+# include <config.h>
# include "obstack.h"
#endif
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
+ 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__. */
+#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
#ifndef ELIDE_CODE
-# if HAVE_INTTYPES_H
-# include <inttypes.h>
-# endif
-# if HAVE_STDINT_H || defined _LIBC
-# include <stdint.h>
-# endif
+# include <stdint.h>
/* Determine default alignment. */
union fooround
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. */
enum
- {
- DEFAULT_ALIGNMENT = offsetof (struct fooalign, u),
- DEFAULT_ROUNDING = sizeof (union fooround)
- };
+{
+ DEFAULT_ALIGNMENT = offsetof (struct fooalign, u),
+ 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. */
+ 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
-/* The functions allocating more room by calling `obstack_chunk_alloc'
- jump to the handler pointed to by `obstack_alloc_failed_handler'.
+/* 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'. */
-static void print_and_abort (void);
+ 'print_and_abort'. */
+static _Noreturn void print_and_abort (void);
void (*obstack_alloc_failed_handler) (void) = print_and_abort;
-/* Exit value used when `print_and_abort' is used. */
+/* Exit value used when 'print_and_abort' is used. */
# include <stdlib.h>
# ifdef _LIBC
int obstack_exit_failure = EXIT_FAILURE;
do not allow (expr) ? void : void. */
# define CALL_CHUNKFUN(h, size) \
- (((h) -> use_extra_arg) \
- ? (*(h)->chunkfun) ((h)->extra_arg, (size)) \
- : (*(struct _obstack_chunk *(*) (long)) (h)->chunkfun) ((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)
+ if ((h)->use_extra_arg) \
+ (*(h)->freefun)((h)->extra_arg, (old_chunk)); \
+ else \
+ (*(void (*)(void *))(h)->freefun)((old_chunk)); \
+ } while (0)
+
-\f
/* Initialize an obstack H for use. Specify chunk size SIZE (0 means default).
Objects start on multiples of ALIGNMENT (0 means use default).
CHUNKFUN is the function to use to allocate chunks,
size = 4096 - extra;
}
- h->chunkfun = (struct _obstack_chunk * (*)(void *, long)) chunkfun;
+ h->chunkfun = (struct _obstack_chunk * (*) (void *, long)) chunkfun;
h->freefun = (void (*) (void *, struct _obstack_chunk *)) freefun;
h->chunk_size = size;
h->alignment_mask = alignment - 1;
h->use_extra_arg = 0;
- chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
+ chunk = h->chunk = CALL_CHUNKFUN (h, h->chunk_size);
if (!chunk)
(*obstack_alloc_failed_handler) ();
h->next_free = h->object_base = __PTR_ALIGN ((char *) chunk, chunk->contents,
h->extra_arg = arg;
h->use_extra_arg = 1;
- chunk = h->chunk = CALL_CHUNKFUN (h, h -> chunk_size);
+ chunk = h->chunk = CALL_CHUNKFUN (h, h->chunk_size);
if (!chunk)
(*obstack_alloc_failed_handler) ();
h->next_free = h->object_base = __PTR_ALIGN ((char *) chunk, chunk->contents,
{
struct _obstack_chunk *old_chunk = h->chunk;
struct _obstack_chunk *new_chunk;
- long new_size;
+ long new_size;
long obj_size = h->next_free - h->object_base;
long i;
long already;
/* Allocate and initialize the new chunk. */
new_chunk = CALL_CHUNKFUN (h, new_size);
if (!new_chunk)
- (*obstack_alloc_failed_handler) ();
+ (*obstack_alloc_failed_handler)();
h->chunk = new_chunk;
new_chunk->prev = old_chunk;
new_chunk->limit = h->chunk_limit = (char *) new_chunk + new_size;
{
for (i = obj_size / sizeof (COPYING_UNIT) - 1;
i >= 0; i--)
- ((COPYING_UNIT *)object_base)[i]
- = ((COPYING_UNIT *)h->object_base)[i];
+ ((COPYING_UNIT *) object_base)[i]
+ = ((COPYING_UNIT *) h->object_base)[i];
/* We used to copy the odd few remaining bytes as one extra COPYING_UNIT,
but that can cross a page boundary on a machine
which does not do strict alignment for COPYING_UNITS. */
/* If the object just copied was the only data in OLD_CHUNK,
free that chunk and remove it from the chain.
But not if that chunk might contain an empty object. */
- if (! h->maybe_empty_object
+ if (!h->maybe_empty_object
&& (h->object_base
== __PTR_ALIGN ((char *) old_chunk, old_chunk->contents,
h->alignment_mask)))
/* 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, void *obj);
+int _obstack_allocated_p (struct obstack *h, void *obj) __attribute_pure__;
int
_obstack_allocated_p (struct obstack *h, void *obj)
{
- struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
- struct _obstack_chunk *plp; /* point to previous chunk if any */
+ struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
+ struct _obstack_chunk *plp; /* point to previous chunk if any */
lp = (h)->chunk;
/* We use >= rather than > since the object cannot be exactly at
}
return lp != 0;
}
-\f
+
/* 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
void
-obstack_free (struct obstack *h, void *obj)
+__obstack_free (struct obstack *h, void *obj)
{
- struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
- struct _obstack_chunk *plp; /* point to previous chunk if any */
+ struct _obstack_chunk *lp; /* below addr of any objects in this chunk */
+ 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.
called by non-GCC compilers. */
strong_alias (obstack_free, _obstack_free)
# endif
-\f
+
int
_obstack_memory_used (struct obstack *h)
{
- struct _obstack_chunk* lp;
+ struct _obstack_chunk *lp;
int nbytes = 0;
for (lp = h->chunk; lp != 0; lp = lp->prev)
}
return nbytes;
}
-\f
+
/* Define the error handler. */
# ifdef _LIBC
# include <libintl.h>
# include <libio/iolibio.h>
# endif
-# ifndef __attribute__
-/* This feature is available in gcc versions 2.5 and later. */
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
-# define __attribute__(Spec) /* empty */
-# endif
-# endif
-
-static void
-__attribute__ ((noreturn))
+static _Noreturn void
print_and_abort (void)
{
/* Don't change any of these strings. Yes, it would be possible to add
exit (obstack_exit_failure);
}
-#endif /* !ELIDE_CODE */
+#endif /* !ELIDE_CODE */
projects / thirdparty / glibc.git / blobdiff