diff options
Diffstat (limited to 'malloc/obstack.h')
| -rw-r--r-- | malloc/obstack.h | 186 |
1 files changed, 53 insertions, 133 deletions
diff --git a/malloc/obstack.h b/malloc/obstack.h index a44224443f..11e519b98d 100644 --- a/malloc/obstack.h +++ b/malloc/obstack.h @@ -1,5 +1,5 @@ /* obstack.h - object stack macros - Copyright (C) 1988,89,90,91,92,93,94,96,97,98,99 Free Software Foundation, Inc. + Copyright (C) 1988-1994,1996-1999,2003,2004 Free Software Foundation, Inc. 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. @@ -119,40 +119,22 @@ extern "C" { #endif #ifndef __INT_TO_PTR -#if defined __STDC__ && __STDC__ -# define __INT_TO_PTR(P) ((void *) ((P) + (char *) 0)) -#else # define __INT_TO_PTR(P) ((P) + (char *) 0) #endif -#endif /* We need the type of the resulting object. 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, if <stddef.h> is - available, include it and use ptrdiff_t. In traditional C, long is - the best that we can do. */ + namespace with <stddef.h>'s symbols. Otherwise, include <stddef.h> + and use ptrdiff_t. */ #ifdef __PTRDIFF_TYPE__ # define PTR_INT_TYPE __PTRDIFF_TYPE__ #else -# ifdef HAVE_STDDEF_H -# include <stddef.h> -# define PTR_INT_TYPE ptrdiff_t -# else -# define PTR_INT_TYPE long -# endif +# include <stddef.h> +# define PTR_INT_TYPE ptrdiff_t #endif -#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 +#include <string.h> struct _obstack_chunk /* Lives at front of each chunk. */ { @@ -170,18 +152,12 @@ struct obstack /* control current object in current chunk */ 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 @@ -194,7 +170,6 @@ struct obstack /* control current object in current chunk */ /* Declare the external functions we use; they are in obstack.c. */ -#if defined __STDC__ && __STDC__ extern void _obstack_newchunk (struct obstack *, int); extern void _obstack_free (struct obstack *, void *); extern int _obstack_begin (struct obstack *, int, int, @@ -203,16 +178,7 @@ extern int _obstack_begin_1 (struct obstack *, int, int, 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 -#if defined __STDC__ && __STDC__ - /* Do the function-declarations after the structs but before defining the macros. */ @@ -251,20 +217,11 @@ 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 which should either abort gracefully or use longjump - but shouldn't return. 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; @@ -287,67 +244,34 @@ extern int obstack_exit_failure; #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) \ +/* To prevent prototype warnings provide complete argument list. */ +#define obstack_init(h) \ _obstack_begin ((h), 0, 0, \ - (void *(*) (long)) obstack_chunk_alloc, \ + (void *(*) (long)) obstack_chunk_alloc, \ (void (*) (void *)) obstack_chunk_free) -# define obstack_begin(h, size) \ +#define obstack_begin(h, size) \ _obstack_begin ((h), (size), 0, \ - (void *(*) (long)) obstack_chunk_alloc, \ + (void *(*) (long)) obstack_chunk_alloc, \ (void (*) (void *)) obstack_chunk_free) -# define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \ +#define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \ _obstack_begin ((h), (size), (alignment), \ - (void *(*) (long)) (chunkfun), \ + (void *(*) (long)) (chunkfun), \ (void (*) (void *)) (freefun)) -# define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \ +#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) \ +#define obstack_chunkfun(h, newchunkfun) \ ((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun)) -# define obstack_freefun(h, newfreefun) \ +#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_begin(h, size) \ - _obstack_begin ((h), (size), 0, \ - (void *(*) ()) obstack_chunk_alloc, \ - (void (*) ()) obstack_chunk_free) - -# define obstack_specify_allocation(h, size, alignment, chunkfun, freefun) \ - _obstack_begin ((h), (size), (alignment), \ - (void *(*) ()) (chunkfun), \ - (void (*) ()) (freefun)) - -# define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \ - _obstack_begin_1 ((h), (size), (alignment), \ - (void *(*) ()) (chunkfun), \ - (void (*) ()) (freefun), (arg)) - -# define obstack_chunkfun(h, newchunkfun) \ - ((h) -> chunkfun = (struct _obstack_chunk *(*)()) (newchunkfun)) - -# define obstack_freefun(h, newfreefun) \ - ((h) -> freefun = (void (*)()) (newfreefun)) - -#endif - -#define obstack_1grow_fast(h,achar) (*((h)->next_free)++ = achar) +#define obstack_1grow_fast(h,achar) (*((h)->next_free)++ = (achar)) #define obstack_blank_fast(h,n) ((h)->next_free += (n)) @@ -368,12 +292,12 @@ extern int obstack_exit_failure; # define obstack_object_size(OBSTACK) \ __extension__ \ - ({ struct obstack *__o = (OBSTACK); \ + ({ struct obstack const *__o = (OBSTACK); \ (unsigned) (__o->next_free - __o->object_base); }) # define obstack_room(OBSTACK) \ __extension__ \ - ({ struct obstack *__o = (OBSTACK); \ + ({ struct obstack const *__o = (OBSTACK); \ (unsigned) (__o->chunk_limit - __o->next_free); }) # define obstack_make_room(OBSTACK,length) \ @@ -386,7 +310,7 @@ __extension__ \ # define obstack_empty_p(OBSTACK) \ __extension__ \ - ({ struct obstack *__o = (OBSTACK); \ + ({ struct obstack const *__o = (OBSTACK); \ (__o->chunk->prev == 0 && __o->next_free - __o->chunk->contents == 0); }) # define obstack_grow(OBSTACK,where,length) \ @@ -395,7 +319,7 @@ __extension__ \ int __len = (length); \ if (__o->next_free + __len > __o->chunk_limit) \ _obstack_newchunk (__o, __len); \ - _obstack_memcpy (__o->next_free, (where), __len); \ + memcpy (__o->next_free, where, __len); \ __o->next_free += __len; \ (void) 0; }) @@ -405,7 +329,7 @@ __extension__ \ int __len = (length); \ if (__o->next_free + __len + 1 > __o->chunk_limit) \ _obstack_newchunk (__o, __len + 1); \ - _obstack_memcpy (__o->next_free, (where), __len); \ + memcpy (__o->next_free, where, __len); \ __o->next_free += __len; \ *(__o->next_free)++ = 0; \ (void) 0; }) @@ -415,7 +339,7 @@ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ if (__o->next_free + 1 > __o->chunk_limit) \ _obstack_newchunk (__o, 1); \ - *(__o->next_free)++ = (datum); \ + obstack_1grow_fast (__o, datum); \ (void) 0; }) /* These assume that the obstack alignment is good enough for pointers @@ -427,22 +351,28 @@ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ if (__o->next_free + sizeof (void *) > __o->chunk_limit) \ _obstack_newchunk (__o, sizeof (void *)); \ - *((void **)__o->next_free)++ = (datum); \ - (void) 0; }) + obstack_ptr_grow_fast (__o, datum); }) \ # define obstack_int_grow(OBSTACK,datum) \ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ if (__o->next_free + sizeof (int) > __o->chunk_limit) \ _obstack_newchunk (__o, sizeof (int)); \ - *((int *)__o->next_free)++ = (datum); \ - (void) 0; }) + obstack_int_grow_fast (__o, datum); }) -# define obstack_ptr_grow_fast(h,aptr) \ - (*((void **) (h)->next_free)++ = (aptr)) +# define obstack_ptr_grow_fast(OBSTACK,aptr) \ +__extension__ \ +({ struct obstack *__o1 = (OBSTACK); \ + *(const void **) __o1->next_free = (aptr); \ + __o1->next_free += sizeof (const void *); \ + (void) 0; }) -# define obstack_int_grow_fast(h,aint) \ - (*((int *) (h)->next_free)++ = (aint)) +# define obstack_int_grow_fast(OBSTACK,aint) \ +__extension__ \ +({ struct obstack *__o1 = (OBSTACK); \ + *(int *) __o1->next_free = (aint); \ + __o1->next_free += sizeof (int); \ + (void) 0; }) # define obstack_blank(OBSTACK,length) \ __extension__ \ @@ -450,7 +380,7 @@ __extension__ \ int __len = (length); \ if (__o->chunk_limit - __o->next_free < __len) \ _obstack_newchunk (__o, __len); \ - __o->next_free += __len; \ + obstack_blank_fast (__o, __len); \ (void) 0; }) # define obstack_alloc(OBSTACK,length) \ @@ -473,12 +403,11 @@ __extension__ \ /* The local variable is named __o1 to avoid a name conflict when obstack_blank is called. */ -# define obstack_finish(OBSTACK) \ +# define obstack_finish(OBSTACK) \ __extension__ \ ({ struct obstack *__o1 = (OBSTACK); \ - void *value; \ - value = (void *) __o1->object_base; \ - if (__o1->next_free == value) \ + void *__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)\ @@ -487,7 +416,7 @@ __extension__ \ > __o1->chunk_limit - (char *)__o1->chunk) \ __o1->next_free = __o1->chunk_limit; \ __o1->object_base = __o1->next_free; \ - value; }) + __value; }) # define obstack_free(OBSTACK, OBJ) \ __extension__ \ @@ -523,43 +452,43 @@ __extension__ \ ( (h)->temp = (length), \ (((h)->next_free + (h)->temp > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), (h)->temp), 0) : 0), \ - _obstack_memcpy ((h)->next_free, (where), (h)->temp), \ + memcpy ((h)->next_free, 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), \ - _obstack_memcpy ((h)->next_free, (where), (h)->temp), \ + memcpy ((h)->next_free, where, (h)->temp), \ (h)->next_free += (h)->temp, \ *((h)->next_free)++ = 0) # define obstack_1grow(h,datum) \ ( (((h)->next_free + 1 > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), 1), 0) : 0), \ - (*((h)->next_free)++ = (datum))) + obstack_1grow_fast (h, datum)) # define obstack_ptr_grow(h,datum) \ ( (((h)->next_free + sizeof (char *) > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), sizeof (char *)), 0) : 0), \ - (*((const char **) (((h)->next_free+=sizeof(char *))-sizeof(char *))) = (datum))) + obstack_ptr_grow_fast (h, datum)) # define obstack_int_grow(h,datum) \ ( (((h)->next_free + sizeof (int) > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), sizeof (int)), 0) : 0), \ - (*((int *) (((h)->next_free+=sizeof(int))-sizeof(int))) = (datum))) + obstack_int_grow_fast (h, datum)) # define obstack_ptr_grow_fast(h,aptr) \ - (*((const char **) (h)->next_free)++ = (aptr)) + (((const void **) ((h)->next_free += sizeof (void *)))[-1] = (aptr)) # define obstack_int_grow_fast(h,aint) \ - (*((int *) (h)->next_free)++ = (aint)) + (((int *) ((h)->next_free += sizeof (int)))[-1] = (aptr)) # define obstack_blank(h,length) \ ( (h)->temp = (length), \ (((h)->chunk_limit - (h)->next_free < (h)->temp) \ ? (_obstack_newchunk ((h), (h)->temp), 0) : 0), \ - ((h)->next_free += (h)->temp)) + obstack_blank_fast (h, (h)->temp)) # define obstack_alloc(h,length) \ (obstack_blank ((h), (length)), obstack_finish ((h))) @@ -570,7 +499,7 @@ __extension__ \ # define obstack_copy0(h,where,length) \ (obstack_grow0 ((h), (where), (length)), obstack_finish ((h))) -# define obstack_finish(h) \ +# define obstack_finish(h) \ ( ((h)->next_free == (h)->object_base \ ? (((h)->maybe_empty_object = 1), 0) \ : 0), \ @@ -582,23 +511,14 @@ __extension__ \ > (h)->chunk_limit - (char *) (h)->chunk) \ ? ((h)->next_free = (h)->chunk_limit) : 0), \ (h)->object_base = (h)->next_free, \ - __INT_TO_PTR ((h)->temp)) + (void *) __INT_TO_PTR ((h)->temp)) -# if defined __STDC__ && __STDC__ -# define obstack_free(h,obj) \ +# define obstack_free(h,obj) \ ( (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 > 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))) -# endif #endif /* not __GNUC__ or not __STDC__ */ |