lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-08-07 06:43:00 +03:00
Code Activity

malloc/obstack: Merge from gnulib

Browse Source 
Merge the latest version of the obstack.c and obstack.h files
from gnulib. The majority of this change is coding style and
cosmetic comment changes but it also fixes a -Wundef warning
in the build as a side effect.

2014-07-02  Will Newton  <will.newton@linaro.org>

	* malloc/obstack.c: Merge from gnulib master.
	[HAVE_CONFIG_H]: Remove conditional code.
	[!_LIBC]: Include config.h.
	[!ELIDE_CODE]: Don't include inttypes.h, include
	stdint.h unconditionally.
	(print_and_abort): Mark as _Noreturn.
	(_obstack_allocated_p): Mark as __attribute_pure__.
	(obstack_free): Rename to __obstack_free.
	[!__attribute__]: Remove conditional code.
	* malloc/obstack.h: Merge from gnulib master.
	[__cplusplus]: Move conditional down.
	[!__attribute_pure__]: Define __attribute_pure__ here
	if it is not already defined.
	(_obstack_memory_used): Mark as __attribute_pure__.
	[!__obstack_free]: Define as obstack_free.
	[__GNUC__]: Remove check for ancient NeXT gcc.
This commit is contained in:
Will Newton
2014-06-23 16:53:30 +01:00
parent c4c4124473
commit b100f9aa77
3 changed files with 161 additions and 147 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
ChangeLog
View File

@@ -1,3 +1,22 @@
2014-07-02 Will Newton <will.newton@linaro.org>
* malloc/obstack.c: Merge from gnulib master.
[HAVE_CONFIG_H]: Remove conditional code.
[!_LIBC]: Include config.h.
[!ELIDE_CODE]: Don't include inttypes.h, include
stdint.h unconditionally.
(print_and_abort): Mark as _Noreturn.
(_obstack_allocated_p): Mark as __attribute_pure__.
(obstack_free): Rename to __obstack_free.
[!__attribute__]: Remove conditional code.
* malloc/obstack.h: Merge from gnulib master.
[__cplusplus]: Move conditional down.
[!__attribute_pure__]: Define __attribute_pure__ here
if it is not already defined.
(_obstack_memory_used): Mark as __attribute_pure__.
[!__obstack_free]: Define as obstack_free.
[__GNUC__]: Remove check for ancient NeXT gcc.
2014-07-02 Will Newton <will.newton@linaro.org>
Paul Eggert <eggert@cs.ucla.edu>

41
malloc/obstack.c
View File

@@ -17,14 +17,11 @@
<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
@@ -39,7 +36,7 @@
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__. */
@@ -55,12 +52,7 @@
#ifndef ELIDE_CODE
# if HAVE_INTTYPES_H
# include <inttypes.h>
# endif
# if HAVE_STDINT_H || defined _LIBC
# include <stdint.h>
# endif
/* Determine default alignment. */
union fooround
@@ -85,23 +77,23 @@ enum
/* 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;
@@ -324,7 +316,7 @@ libc_hidden_def (_obstack_newchunk)
/* 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)
@@ -350,7 +342,7 @@ _obstack_allocated_p (struct obstack *h, void *obj)
# 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 */
@@ -412,15 +404,7 @@ _obstack_memory_used (struct obstack *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
@@ -435,4 +419,5 @@ print_and_abort (void)
# endif
exit (obstack_exit_failure);
}
#endif /* !ELIDE_CODE */

60
malloc/obstack.h
View File

@@ -32,11 +32,11 @@
stack is of mature, fixed size and fixed address objects.
These routines grab large chunks of memory, using a function you
supply, called `obstack_chunk_alloc'. On occasion, they free chunks,
by calling `obstack_chunk_free'. You must define them and declare
supply, called 'obstack_chunk_alloc'. On occasion, they free chunks,
by calling 'obstack_chunk_free'. You must define them and declare
them before using any obstack macros.
Each independent stack is represented by a `struct obstack'.
Each independent stack is represented by a 'struct obstack'.
Each of the obstack macros expects a pointer to such a structure
as the first argument.
@@ -93,7 +93,7 @@
Exactly one object is growing in an obstack at any one time.
You can run one obstack per control block.
You may have as many control blocks as you dare.
Because of the way we do it, you can `unwind' an obstack
Because of the way we do it, you can "unwind" an obstack
back to a previous state. (You may remove objects much
as you would with a stack.)
*/
@@ -104,10 +104,6 @@
#ifndef _OBSTACK_H
#define _OBSTACK_H 1
#ifdef __cplusplus
extern "C" {
#endif
/* We need the type of a pointer subtraction. If __PTRDIFF_TYPE__ is
defined, as with GNU C, use that; that way we don't pollute the
namespace with <stddef.h>'s symbols. Otherwise, include <stddef.h>
@@ -126,7 +122,7 @@ extern "C" {
#define __BPTR_ALIGN(B, P, A) ((B) + (((P) - (B) + (A)) & ~(A)))
/* Similiar to _BPTR_ALIGN (B, P, A), except optimize the common case
/* Similar to _BPTR_ALIGN (B, P, A), except optimize the common case
where pointers can be converted to integers, aligned as integers,
and converted back again. If PTR_INT_TYPE is narrower than a
pointer (e.g., the AS/400), play it safe and compute the alignment
@@ -139,6 +135,14 @@ extern "C" {
#include <string.h>
#ifndef __attribute_pure__
# define __attribute_pure__ _GL_ATTRIBUTE_PURE
#endif
#ifdef __cplusplus
extern "C" {
#endif
struct _obstack_chunk /* Lives at front of each chunk. */
{
char *limit; /* 1 past end of this chunk */
@@ -159,7 +163,7 @@ struct obstack /* control current object in current chunk */
void *tempptr;
} temp; /* Temporary for some macros. */
int alignment_mask; /* Mask of alignment for each object. */
/* These prototypes vary based on `use_extra_arg', and we use
/* These prototypes vary based on 'use_extra_arg', and we use
casts to the prototypeless function type in all assignments,
but having prototypes here quiets -Wstrict-prototypes. */
struct _obstack_chunk *(*chunkfun) (void *, long);
@@ -183,18 +187,23 @@ extern int _obstack_begin (struct obstack *, int, int,
extern int _obstack_begin_1 (struct obstack *, int, int,
void *(*)(void *, long),
void (*)(void *, void *), void *);
extern int _obstack_memory_used (struct obstack *);
extern int _obstack_memory_used (struct obstack *) __attribute_pure__;
void obstack_free (struct obstack *__obstack, void *__glibc_block);
/* The default name of the function for freeing a chunk is 'obstack_free',
but gnulib users can override this by defining '__obstack_free'. */
#ifndef __obstack_free
# define __obstack_free obstack_free
#endif
extern void __obstack_free (struct obstack *, void *);
/* Error handler called when `obstack_chunk_alloc' failed to allocate
/* Error handler called when 'obstack_chunk_alloc' failed to allocate
more memory. This can be set to a user defined function which
should either abort gracefully or use longjump - but shouldn't
return. The default action is to print a message and abort. */
extern void (*obstack_alloc_failed_handler) (void);
/* Exit value used when `print_and_abort' is used. */
/* Exit value used when 'print_and_abort' is used. */
extern int obstack_exit_failure;
/* Pointer to beginning of object being allocated or to be allocated next.
@@ -249,17 +258,14 @@ extern int obstack_exit_failure;
#define obstack_memory_used(h) _obstack_memory_used (h)
#if defined __GNUC__
/* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and
does not implement __extension__. But that compiler doesn't define
__GNUC_MINOR__. */
# if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__)
# if ! (2 < __GNUC__ + (8 <= __GNUC_MINOR__))
# define __extension__
# endif
/* For GNU C, if not -traditional,
we can define these macros to compute all args only once
without using a global variable.
Also, we can avoid using the `temp' slot, to make faster code. */
Also, we can avoid using the 'temp' slot, to make faster code. */
# define obstack_object_size(OBSTACK) \
__extension__ \
@@ -337,14 +343,16 @@ extern int obstack_exit_failure;
# define obstack_ptr_grow_fast(OBSTACK, aptr) \
__extension__ \
({ struct obstack *__o1 = (OBSTACK); \
*(const void **) __o1->next_free = (aptr); \
void *__p1 = __o1->next_free; \
*(const void **) __p1 = (aptr); \
__o1->next_free += sizeof (const void *); \
(void) 0; })
# define obstack_int_grow_fast(OBSTACK, aint) \
__extension__ \
({ struct obstack *__o1 = (OBSTACK); \
*(int *) __o1->next_free = (aint); \
void *__p1 = __o1->next_free; \
*(int *) __p1 = (aint); \
__o1->next_free += sizeof (int); \
(void) 0; })
@@ -398,7 +406,7 @@ extern int obstack_exit_failure;
void *__obj = (OBJ); \
if (__obj > (void *) __o->chunk && __obj < (void *) __o->chunk_limit) \
__o->next_free = __o->object_base = (char *) __obj; \
else (obstack_free) (__o, __obj); })
else (__obstack_free) (__o, __obj); })
#else /* not __GNUC__ */
@@ -494,12 +502,14 @@ extern int obstack_exit_failure;
((h)->temp.tempint = (char *) (obj) - (char *) (h)->chunk, \
((((h)->temp.tempint > 0 \
&& (h)->temp.tempint < (h)->chunk_limit - (char *) (h)->chunk)) \
? (((h)->next_free = (h)->object_base \
= (h)->temp.tempint + (char *) (h)->chunk), 0) \
: ((obstack_free) ((h), (h)->temp.tempint + (char *) (h)->chunk), 0)))
? (void) ((h)->next_free = (h)->object_base \
= (h)->temp.tempint + (char *) (h)->chunk) \
: (__obstack_free) (h, (h)->temp.tempint + (char *) (h)->chunk)))
#endif /* not __GNUC__ */
#ifdef __cplusplus
} /* C++ */
#endif
#endif /* obstack.h */