/usr/lib/gcc/arm-linux-gnueabihf/4.4.7/include/objc/sarray.h is in gobjc-4.4-arm-linux-gnueabihf 4.4.7-1ubuntu2cross1.52.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 | /* Sparse Arrays for Objective C dispatch tables
Copyright (C) 1993, 1995, 1996, 2004, 2009 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup.
This file is part of GCC.
GCC 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 3, or (at your option)
any later version.
GCC 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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef __sarray_INCLUDE_GNU
#define __sarray_INCLUDE_GNU
#include "thr.h"
#define OBJC_SPARSE2 /* 2-level sparse array */
/* #define OBJC_SPARSE3 */ /* 3-level sparse array */
#ifdef OBJC_SPARSE2
extern const char* __objc_sparse2_id;
#endif
#ifdef OBJC_SPARSE3
extern const char* __objc_sparse3_id;
#endif
#include <stddef.h>
#include <assert.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
extern int nbuckets; /* for stats */
extern int nindices;
extern int narrays;
extern int idxsize;
/* An unsigned integer of same size as a pointer */
#define SIZET_BITS (sizeof(size_t)*8)
#if defined(__sparc__) || defined(OBJC_SPARSE2)
#define PRECOMPUTE_SELECTORS
#endif
#ifdef OBJC_SPARSE3
/* Buckets are 8 words each */
#define BUCKET_BITS 3
#define BUCKET_SIZE (1<<BUCKET_BITS)
#define BUCKET_MASK (BUCKET_SIZE-1)
/* Indices are 16 words each */
#define INDEX_BITS 4
#define INDEX_SIZE (1<<INDEX_BITS)
#define INDEX_MASK (INDEX_SIZE-1)
#define INDEX_CAPACITY (BUCKET_SIZE*INDEX_SIZE)
#else /* OBJC_SPARSE2 */
/* Buckets are 32 words each */
#define BUCKET_BITS 5
#define BUCKET_SIZE (1<<BUCKET_BITS)
#define BUCKET_MASK (BUCKET_SIZE-1)
#endif /* OBJC_SPARSE2 */
typedef size_t sidx;
#ifdef PRECOMPUTE_SELECTORS
struct soffset {
#ifdef OBJC_SPARSE3
unsigned int unused : SIZET_BITS/4;
unsigned int eoffset : SIZET_BITS/4;
unsigned int boffset : SIZET_BITS/4;
unsigned int ioffset : SIZET_BITS/4;
#else /* OBJC_SPARSE2 */
#ifdef __sparc__
unsigned long boffset : (SIZET_BITS - 2) - BUCKET_BITS;
unsigned int eoffset : BUCKET_BITS;
unsigned int unused : 2;
#else
unsigned int boffset : SIZET_BITS/2;
unsigned int eoffset : SIZET_BITS/2;
#endif
#endif /* OBJC_SPARSE2 */
};
union sofftype {
struct soffset off;
sidx idx;
};
#endif /* not PRECOMPUTE_SELECTORS */
union sversion {
int version;
void *next_free;
};
struct sbucket {
void* elems[BUCKET_SIZE]; /* elements stored in array */
union sversion version; /* used for copy-on-write */
};
#ifdef OBJC_SPARSE3
struct sindex {
struct sbucket* buckets[INDEX_SIZE];
union sversion version; /* used for copy-on-write */
};
#endif /* OBJC_SPARSE3 */
struct sarray {
#ifdef OBJC_SPARSE3
struct sindex** indices;
struct sindex* empty_index;
#else /* OBJC_SPARSE2 */
struct sbucket** buckets;
#endif /* OBJC_SPARSE2 */
struct sbucket* empty_bucket;
union sversion version; /* used for copy-on-write */
short ref_count;
struct sarray* is_copy_of;
size_t capacity;
};
struct sarray* sarray_new(int, void* default_element);
void sarray_free(struct sarray*);
struct sarray* sarray_lazy_copy(struct sarray*);
void sarray_realloc(struct sarray*, int new_size);
void sarray_at_put(struct sarray*, sidx indx, void* elem);
void sarray_at_put_safe(struct sarray*, sidx indx, void* elem);
struct sarray* sarray_hard_copy(struct sarray*); /* ... like the name? */
void sarray_remove_garbage(void);
#ifdef PRECOMPUTE_SELECTORS
/* Transform soffset values to ints and vica verca */
static inline unsigned int
soffset_decode(sidx indx)
{
union sofftype x;
x.idx = indx;
#ifdef OBJC_SPARSE3
return x.off.eoffset
+ (x.off.boffset*BUCKET_SIZE)
+ (x.off.ioffset*INDEX_CAPACITY);
#else /* OBJC_SPARSE2 */
return x.off.eoffset + (x.off.boffset*BUCKET_SIZE);
#endif /* OBJC_SPARSE2 */
}
static inline sidx
soffset_encode(size_t offset)
{
union sofftype x;
x.off.eoffset = offset%BUCKET_SIZE;
#ifdef OBJC_SPARSE3
x.off.boffset = (offset/BUCKET_SIZE)%INDEX_SIZE;
x.off.ioffset = offset/INDEX_CAPACITY;
#else /* OBJC_SPARSE2 */
x.off.boffset = offset/BUCKET_SIZE;
#endif
return (sidx)x.idx;
}
#else /* not PRECOMPUTE_SELECTORS */
static inline size_t
soffset_decode(sidx indx)
{
return indx;
}
static inline sidx
soffset_encode(size_t offset)
{
return offset;
}
#endif /* not PRECOMPUTE_SELECTORS */
/* Get element from the Sparse array `array' at offset `indx' */
static inline void* sarray_get(struct sarray* array, sidx indx)
{
#ifdef PRECOMPUTE_SELECTORS
union sofftype x;
x.idx = indx;
#ifdef OBJC_SPARSE3
return
array->
indices[x.off.ioffset]->
buckets[x.off.boffset]->
elems[x.off.eoffset];
#else /* OBJC_SPARSE2 */
return array->buckets[x.off.boffset]->elems[x.off.eoffset];
#endif /* OBJC_SPARSE2 */
#else /* not PRECOMPUTE_SELECTORS */
#ifdef OBJC_SPARSE3
return array->
indices[indx/INDEX_CAPACITY]->
buckets[(indx/BUCKET_SIZE)%INDEX_SIZE]->
elems[indx%BUCKET_SIZE];
#else /* OBJC_SPARSE2 */
return array->buckets[indx/BUCKET_SIZE]->elems[indx%BUCKET_SIZE];
#endif /* not OBJC_SPARSE3 */
#endif /* not PRECOMPUTE_SELECTORS */
}
static inline void* sarray_get_safe(struct sarray* array, sidx indx)
{
if(soffset_decode(indx) < array->capacity)
return sarray_get(array, indx);
else
return (array->empty_bucket->elems[0]);
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __sarray_INCLUDE_GNU */
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