/* obstack.h - object stack macros
- Copyright (C) 1988, 89, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
+ Copyright (C) 1988,89,90,91,92,93,94,96,97 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. */
/* Summary:
#ifndef __OBSTACK_H__
#define __OBSTACK_H__
\f
-#ifdef HAVE_CONFIG_H
-# include <config.h>
+#ifdef __cplusplus
+extern "C" {
#endif
-
-/* We use subtraction of (char *)0 instead of casting to int
+\f
+/* We use subtraction of (char *) 0 instead of casting to int
because on word-addressable machines a simple cast to int
may ignore the byte-within-word field of the pointer. */
#ifndef __PTR_TO_INT
-#define __PTR_TO_INT(P) ((P) - (char *)0)
+#define __PTR_TO_INT(P) ((P) - (char *) 0)
#endif
#ifndef __INT_TO_PTR
-#define __INT_TO_PTR(P) ((P) + (char *)0)
+#define __INT_TO_PTR(P) ((P) + (char *) 0)
#endif
/* We need the type of the resulting object. In ANSI C it is ptrdiff_t
#define PTR_INT_TYPE long
#endif
-#if HAVE_STRING_H || STDC_HEADERS
-# include <string.h>
-# ifndef bcopy
-# define bcopy(s, d, n) memcpy ((d), (s), (n))
-# endif
-#else /* HAVE_STRING_H || STDC_HEADERS */
-# include <strings.h>
-#endif /* not (HAVE_STRING_H || STDC_HEADERS) */
+#if defined (_LIBC) || defined (HAVE_STRING_H)
+#include <string.h>
+#define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N))
+#else
+#ifdef memcpy
+#define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N))
+#else
+#define _obstack_memcpy(To, From, N) bcopy ((From), (To), (N))
+#endif
+#endif
struct _obstack_chunk /* Lives at front of each chunk. */
{
struct obstack /* control current object in current chunk */
{
long chunk_size; /* preferred size to allocate chunks in */
- struct _obstack_chunk* chunk; /* address of current struct obstack_chunk */
+ struct _obstack_chunk *chunk; /* address of current struct obstack_chunk */
char *object_base; /* address of object we are building */
char *next_free; /* where to add next char to current object */
char *chunk_limit; /* address of char after current chunk */
PTR_INT_TYPE temp; /* Temporary for some macros. */
int alignment_mask; /* Mask of alignment for each object. */
+#if defined (__STDC__) && __STDC__
+ /* 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);
+ void (*freefun) (void *, struct _obstack_chunk *);
+ void *extra_arg; /* first arg for chunk alloc/dealloc funcs */
+#else
struct _obstack_chunk *(*chunkfun) (); /* User's fcn to allocate a chunk. */
void (*freefun) (); /* User's function to free a chunk. */
char *extra_arg; /* first arg for chunk alloc/dealloc funcs */
+#endif
unsigned use_extra_arg:1; /* chunk alloc/dealloc funcs take extra arg */
unsigned maybe_empty_object:1;/* There is a possibility that the current
chunk contains a zero-length object. This
prevents freeing the chunk if we allocate
a bigger chunk to replace it. */
- unsigned alloc_failed:1; /* chunk alloc func returned 0 */
+ unsigned alloc_failed:1; /* No longer used, as we now call the failed
+ handler on error, but retained for binary
+ compatibility. */
};
/* Declare the external functions we use; they are in obstack.c. */
extern void _obstack_newchunk (struct obstack *, int);
extern void _obstack_free (struct obstack *, void *);
extern int _obstack_begin (struct obstack *, int, int,
- void *(*) (), void (*) ());
+ void *(*) (long), void (*) (void *));
extern int _obstack_begin_1 (struct obstack *, int, int,
- void *(*) (), void (*) (), void *);
+ void *(*) (void *, long),
+ void (*) (void *, void *), void *);
+extern int _obstack_memory_used (struct obstack *);
#else
extern void _obstack_newchunk ();
extern void _obstack_free ();
extern int _obstack_begin ();
extern int _obstack_begin_1 ();
+extern int _obstack_memory_used ();
#endif
\f
#if defined (__STDC__) && __STDC__
int obstack_object_size (struct obstack *obstack);
int obstack_room (struct obstack *obstack);
+void obstack_make_room (struct obstack *obstack, int size);
void obstack_1grow_fast (struct obstack *obstack, int data_char);
void obstack_ptr_grow_fast (struct obstack *obstack, void *data);
void obstack_int_grow_fast (struct obstack *obstack, int data);
void * obstack_next_free (struct obstack *obstack);
int obstack_alignment_mask (struct obstack *obstack);
int obstack_chunk_size (struct obstack *obstack);
+int obstack_memory_used (struct obstack *obstack);
#endif /* __STDC__ */
/* Non-ANSI C cannot really support alternative functions for these macros,
so we do not declare them. */
+
+/* Error handler called when `obstack_chunk_alloc' failed to allocate
+ more memory. This can be set to a user defined function. The
+ default action is to print a message and abort. */
+#if defined (__STDC__) && __STDC__
+extern void (*obstack_alloc_failed_handler) (void);
+#else
+extern void (*obstack_alloc_failed_handler) ();
+#endif
+
+/* Exit value used when `print_and_abort' is used. */
+extern int obstack_exit_failure;
\f
/* Pointer to beginning of object being allocated or to be allocated next.
Note that this might not be the final address of the object
because a new chunk might be needed to hold the final size. */
-#define obstack_base(h) ((h)->alloc_failed ? 0 : (h)->object_base)
+#define obstack_base(h) ((h)->object_base)
/* Size for allocating ordinary chunks. */
/* Pointer to next byte not yet allocated in current chunk. */
-#define obstack_next_free(h) ((h)->alloc_failed ? 0 : (h)->next_free)
+#define obstack_next_free(h) ((h)->next_free)
/* Mask specifying low bits that should be clear in address of an object. */
#define obstack_alignment_mask(h) ((h)->alignment_mask)
+/* To prevent prototype warnings provide complete argument list in
+ standard C version. */
+#if defined (__STDC__) && __STDC__
+
+#define obstack_init(h) \
+ _obstack_begin ((h), 0, 0, \
+ (void *(*) (long)) obstack_chunk_alloc, (void (*) (void *)) obstack_chunk_free)
+
+#define obstack_begin(h, size) \
+ _obstack_begin ((h), (size), 0, \
+ (void *(*) (long)) obstack_chunk_alloc, (void (*) (void *)) obstack_chunk_free)
+
+#define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \
+ _obstack_begin ((h), (size), (alignment), \
+ (void *(*) (long)) (chunkfun), (void (*) (void *)) (freefun))
+
+#define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
+ _obstack_begin_1 ((h), (size), (alignment), \
+ (void *(*) (void *, long)) (chunkfun), \
+ (void (*) (void *, void *)) (freefun), (arg))
+
+#define obstack_chunkfun(h, newchunkfun) \
+ ((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun))
+
+#define obstack_freefun(h, newfreefun) \
+ ((h) -> freefun = (void (*)(void *, struct _obstack_chunk *)) (newfreefun))
+
+#else
+
#define obstack_init(h) \
_obstack_begin ((h), 0, 0, \
(void *(*) ()) obstack_chunk_alloc, (void (*) ()) obstack_chunk_free)
#define obstack_freefun(h, newfreefun) \
((h) -> freefun = (void (*)()) (newfreefun))
+#endif
+
#define obstack_1grow_fast(h,achar) (*((h)->next_free)++ = achar)
#define obstack_blank_fast(h,n) ((h)->next_free += (n))
+
+#define obstack_memory_used(h) _obstack_memory_used (h)
\f
-#if defined (__GNUC__) && defined (__STDC__)
+#if defined (__GNUC__) && defined (__STDC__) && __STDC__
/* 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__. */
#define obstack_object_size(OBSTACK) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
- __o->alloc_failed ? 0 : \
(unsigned) (__o->next_free - __o->object_base); })
#define obstack_room(OBSTACK) \
({ struct obstack *__o = (OBSTACK); \
(unsigned) (__o->chunk_limit - __o->next_free); })
+#define obstack_make_room(OBSTACK,length) \
+__extension__ \
+({ struct obstack *__o = (OBSTACK); \
+ int __len = (length); \
+ if (__o->chunk_limit - __o->next_free < __len) \
+ _obstack_newchunk (__o, __len); \
+ (void) 0; })
+
#define obstack_grow(OBSTACK,where,length) \
__extension__ \
({ struct obstack *__o = (OBSTACK); \
int __len = (length); \
if (__o->next_free + __len > __o->chunk_limit) \
_obstack_newchunk (__o, __len); \
- if (!__o->alloc_failed) \
- { \
- bcopy ((char *) (where), __o->next_free, __len); \
- __o->next_free += __len; \
- } \
+ _obstack_memcpy (__o->next_free, (char *) (where), __len); \
+ __o->next_free += __len; \
(void) 0; })
#define obstack_grow0(OBSTACK,where,length) \
int __len = (length); \
if (__o->next_free + __len + 1 > __o->chunk_limit) \
_obstack_newchunk (__o, __len + 1); \
- if (!__o->alloc_failed) \
- { \
- bcopy ((char *) (where), __o->next_free, __len); \
- __o->next_free += __len; \
- *(__o->next_free)++ = 0; \
- } \
+ _obstack_memcpy (__o->next_free, (char *) (where), __len); \
+ __o->next_free += __len; \
+ *(__o->next_free)++ = 0; \
(void) 0; })
#define obstack_1grow(OBSTACK,datum) \
({ struct obstack *__o = (OBSTACK); \
if (__o->next_free + 1 > __o->chunk_limit) \
_obstack_newchunk (__o, 1); \
- if (!__o->alloc_failed) \
- *(__o->next_free)++ = (datum); \
+ *(__o->next_free)++ = (datum); \
(void) 0; })
/* These assume that the obstack alignment is good enough for pointers or ints,
({ struct obstack *__o = (OBSTACK); \
if (__o->next_free + sizeof (void *) > __o->chunk_limit) \
_obstack_newchunk (__o, sizeof (void *)); \
- if (!__o->alloc_failed) \
- *((void **)__o->next_free)++ = ((void *)datum); \
+ *((void **)__o->next_free)++ = ((void *)datum); \
(void) 0; })
#define obstack_int_grow(OBSTACK,datum) \
({ struct obstack *__o = (OBSTACK); \
if (__o->next_free + sizeof (int) > __o->chunk_limit) \
_obstack_newchunk (__o, sizeof (int)); \
- if (!__o->alloc_failed) \
- *((int *)__o->next_free)++ = ((int)datum); \
+ *((int *)__o->next_free)++ = ((int)datum); \
(void) 0; })
-#define obstack_ptr_grow_fast(h,aptr) (*((void **)(h)->next_free)++ = (void *)aptr)
-#define obstack_int_grow_fast(h,aint) (*((int *)(h)->next_free)++ = (int)aint)
+#define obstack_ptr_grow_fast(h,aptr) (*((void **) (h)->next_free)++ = (void *)aptr)
+#define obstack_int_grow_fast(h,aint) (*((int *) (h)->next_free)++ = (int) aint)
#define obstack_blank(OBSTACK,length) \
__extension__ \
int __len = (length); \
if (__o->chunk_limit - __o->next_free < __len) \
_obstack_newchunk (__o, __len); \
- if (!__o->alloc_failed) \
- __o->next_free += __len; \
+ __o->next_free += __len; \
(void) 0; })
#define obstack_alloc(OBSTACK,length) \
__extension__ \
({ struct obstack *__o1 = (OBSTACK); \
void *value; \
- if (__o1->alloc_failed) \
- value = 0; \
- else \
- { \
- value = (void *) __o1->object_base; \
- if (__o1->next_free == value) \
- __o1->maybe_empty_object = 1; \
- __o1->next_free \
- = __INT_TO_PTR ((__PTR_TO_INT (__o1->next_free)+__o1->alignment_mask)\
- & ~ (__o1->alignment_mask)); \
- if (__o1->next_free - (char *)__o1->chunk \
- > __o1->chunk_limit - (char *)__o1->chunk) \
- __o1->next_free = __o1->chunk_limit; \
- __o1->object_base = __o1->next_free; \
- } \
+ value = (void *) __o1->object_base; \
+ if (__o1->next_free == value) \
+ __o1->maybe_empty_object = 1; \
+ __o1->next_free \
+ = __INT_TO_PTR ((__PTR_TO_INT (__o1->next_free)+__o1->alignment_mask)\
+ & ~ (__o1->alignment_mask)); \
+ if (__o1->next_free - (char *)__o1->chunk \
+ > __o1->chunk_limit - (char *)__o1->chunk) \
+ __o1->next_free = __o1->chunk_limit; \
+ __o1->object_base = __o1->next_free; \
value; })
#define obstack_free(OBSTACK, OBJ) \
#else /* not __GNUC__ or not __STDC__ */
#define obstack_object_size(h) \
- (unsigned) ((h)->alloc_failed ? 0 : (h)->next_free - (h)->object_base)
+ (unsigned) ((h)->next_free - (h)->object_base)
#define obstack_room(h) \
(unsigned) ((h)->chunk_limit - (h)->next_free)
Casting the third operand to void was tried before,
but some compilers won't accept it. */
+#define obstack_make_room(h,length) \
+( (h)->temp = (length), \
+ (((h)->next_free + (h)->temp > (h)->chunk_limit) \
+ ? (_obstack_newchunk ((h), (h)->temp), 0) : 0))
+
#define obstack_grow(h,where,length) \
( (h)->temp = (length), \
(((h)->next_free + (h)->temp > (h)->chunk_limit) \
? (_obstack_newchunk ((h), (h)->temp), 0) : 0), \
- ((h)->alloc_failed ? 0 : \
- (bcopy ((char *) (where), (h)->next_free, (h)->temp), \
- (h)->next_free += (h)->temp)))
+ _obstack_memcpy ((h)->next_free, (char *) (where), (h)->temp), \
+ (h)->next_free += (h)->temp)
#define obstack_grow0(h,where,length) \
( (h)->temp = (length), \
(((h)->next_free + (h)->temp + 1 > (h)->chunk_limit) \
? (_obstack_newchunk ((h), (h)->temp + 1), 0) : 0), \
- ((h)->alloc_failed ? 0 : \
- (bcopy ((char *) (where), (h)->next_free, (h)->temp), \
+ _obstack_memcpy ((h)->next_free, (char *) (where), (h)->temp), \
(h)->next_free += (h)->temp, \
- *((h)->next_free)++ = 0)))
+ *((h)->next_free)++ = 0)
#define obstack_1grow(h,datum) \
( (((h)->next_free + 1 > (h)->chunk_limit) \
? (_obstack_newchunk ((h), 1), 0) : 0), \
- ((h)->alloc_failed ? 0 : \
- (*((h)->next_free)++ = (datum))))
+ (*((h)->next_free)++ = (datum)))
#define obstack_ptr_grow(h,datum) \
( (((h)->next_free + sizeof (char *) > (h)->chunk_limit) \
? (_obstack_newchunk ((h), sizeof (char *)), 0) : 0), \
- ((h)->alloc_failed ? 0 : \
- (*((char **)(((h)->next_free+=sizeof(char *))-sizeof(char *))) = ((char *)datum))))
+ (*((char **) (((h)->next_free+=sizeof(char *))-sizeof(char *))) = ((char *) datum)))
#define obstack_int_grow(h,datum) \
( (((h)->next_free + sizeof (int) > (h)->chunk_limit) \
? (_obstack_newchunk ((h), sizeof (int)), 0) : 0), \
- ((h)->alloc_failed ? 0 : \
- (*((int *)(((h)->next_free+=sizeof(int))-sizeof(int))) = ((int)datum))))
+ (*((int *) (((h)->next_free+=sizeof(int))-sizeof(int))) = ((int) datum)))
-#define obstack_ptr_grow_fast(h,aptr) (*((char **)(h)->next_free)++ = (char *)aptr)
-#define obstack_int_grow_fast(h,aint) (*((int *)(h)->next_free)++ = (int)aint)
+#define obstack_ptr_grow_fast(h,aptr) (*((char **) (h)->next_free)++ = (char *) aptr)
+#define obstack_int_grow_fast(h,aint) (*((int *) (h)->next_free)++ = (int) aint)
#define obstack_blank(h,length) \
( (h)->temp = (length), \
(((h)->chunk_limit - (h)->next_free < (h)->temp) \
? (_obstack_newchunk ((h), (h)->temp), 0) : 0), \
- ((h)->alloc_failed ? 0 : \
- ((h)->next_free += (h)->temp)))
+ ((h)->next_free += (h)->temp))
#define obstack_alloc(h,length) \
(obstack_blank ((h), (length)), obstack_finish ((h)))
(obstack_grow0 ((h), (where), (length)), obstack_finish ((h)))
#define obstack_finish(h) \
-( (h)->alloc_failed ? 0 : \
- (((h)->next_free == (h)->object_base \
+( ((h)->next_free == (h)->object_base \
? (((h)->maybe_empty_object = 1), 0) \
: 0), \
(h)->temp = __PTR_TO_INT ((h)->object_base), \
(h)->next_free \
= __INT_TO_PTR ((__PTR_TO_INT ((h)->next_free)+(h)->alignment_mask) \
& ~ ((h)->alignment_mask)), \
- (((h)->next_free - (char *)(h)->chunk \
- > (h)->chunk_limit - (char *)(h)->chunk) \
+ (((h)->next_free - (char *) (h)->chunk \
+ > (h)->chunk_limit - (char *) (h)->chunk) \
? ((h)->next_free = (h)->chunk_limit) : 0), \
(h)->object_base = (h)->next_free, \
- __INT_TO_PTR ((h)->temp)))
+ __INT_TO_PTR ((h)->temp))
#if defined (__STDC__) && __STDC__
#define obstack_free(h,obj) \
-( (h)->temp = (char *)(obj) - (char *) (h)->chunk, \
+( (h)->temp = (char *) (obj) - (char *) (h)->chunk, \
(((h)->temp > 0 && (h)->temp < (h)->chunk_limit - (char *) (h)->chunk)\
? (int) ((h)->next_free = (h)->object_base \
= (h)->temp + (char *) (h)->chunk) \
: (((obstack_free) ((h), (h)->temp + (char *) (h)->chunk), 0), 0)))
#else
#define obstack_free(h,obj) \
-( (h)->temp = (char *)(obj) - (char *) (h)->chunk, \
+( (h)->temp = (char *) (obj) - (char *) (h)->chunk, \
(((h)->temp > 0 && (h)->temp < (h)->chunk_limit - (char *) (h)->chunk)\
? (int) ((h)->next_free = (h)->object_base \
= (h)->temp + (char *) (h)->chunk) \
#endif /* not __GNUC__ or not __STDC__ */
+#ifdef __cplusplus
+} /* C++ */
+#endif
+
#endif /* not __OBSTACK_H__ */
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