| 1 | /* |
| 2 | * Copyright (c) 2003-2011 Hewlett-Packard Development Company, L.P. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 5 | * of this software and associated documentation files (the "Software"), to deal |
| 6 | * in the Software without restriction, including without limitation the rights |
| 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 8 | * copies of the Software, and to permit persons to whom the Software is |
| 9 | * furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 20 | * SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | /* XSIZE_fetch_compare_and_swap */ |
| 24 | #if defined(AO_HAVE_XSIZE_fetch_compare_and_swap) \ |
| 25 | && defined(AO_HAVE_nop_full) \ |
| 26 | && !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_acquire) |
| 27 | AO_INLINE XCTYPE |
| 28 | AO_XSIZE_fetch_compare_and_swap_acquire(volatile XCTYPE *addr, |
| 29 | XCTYPE old_val, XCTYPE new_val) |
| 30 | { |
| 31 | XCTYPE result = AO_XSIZE_fetch_compare_and_swap(addr, old_val, new_val); |
| 32 | AO_nop_full(); |
| 33 | return result; |
| 34 | } |
| 35 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_acquire |
| 36 | #endif |
| 37 | #if defined(AO_HAVE_XSIZE_fetch_compare_and_swap) \ |
| 38 | && defined(AO_HAVE_nop_full) \ |
| 39 | && !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_release) |
| 40 | # define AO_XSIZE_fetch_compare_and_swap_release(addr, old_val, new_val) \ |
| 41 | (AO_nop_full(), \ |
| 42 | AO_XSIZE_fetch_compare_and_swap(addr, old_val, new_val)) |
| 43 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_release |
| 44 | #endif |
| 45 | #if defined(AO_HAVE_XSIZE_fetch_compare_and_swap_full) |
| 46 | # if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_release) |
| 47 | # define AO_XSIZE_fetch_compare_and_swap_release(addr, old_val, new_val) \ |
| 48 | AO_XSIZE_fetch_compare_and_swap_full(addr, old_val, new_val) |
| 49 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_release |
| 50 | # endif |
| 51 | # if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_acquire) |
| 52 | # define AO_XSIZE_fetch_compare_and_swap_acquire(addr, old_val, new_val) \ |
| 53 | AO_XSIZE_fetch_compare_and_swap_full(addr, old_val, new_val) |
| 54 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_acquire |
| 55 | # endif |
| 56 | # if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_write) |
| 57 | # define AO_XSIZE_fetch_compare_and_swap_write(addr, old_val, new_val) \ |
| 58 | AO_XSIZE_fetch_compare_and_swap_full(addr, old_val, new_val) |
| 59 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_write |
| 60 | # endif |
| 61 | # if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_read) |
| 62 | # define AO_XSIZE_fetch_compare_and_swap_read(addr, old_val, new_val) \ |
| 63 | AO_XSIZE_fetch_compare_and_swap_full(addr, old_val, new_val) |
| 64 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_read |
| 65 | # endif |
| 66 | #endif /* AO_HAVE_XSIZE_fetch_compare_and_swap_full */ |
| 67 | |
| 68 | #if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap) \ |
| 69 | && defined(AO_HAVE_XSIZE_fetch_compare_and_swap_release) |
| 70 | # define AO_XSIZE_fetch_compare_and_swap(addr, old_val, new_val) \ |
| 71 | AO_XSIZE_fetch_compare_and_swap_release(addr, old_val, new_val) |
| 72 | # define AO_HAVE_XSIZE_fetch_compare_and_swap |
| 73 | #endif |
| 74 | #if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap) \ |
| 75 | && defined(AO_HAVE_XSIZE_fetch_compare_and_swap_acquire) |
| 76 | # define AO_XSIZE_fetch_compare_and_swap(addr, old_val, new_val) \ |
| 77 | AO_XSIZE_fetch_compare_and_swap_acquire(addr, old_val, new_val) |
| 78 | # define AO_HAVE_XSIZE_fetch_compare_and_swap |
| 79 | #endif |
| 80 | #if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap) \ |
| 81 | && defined(AO_HAVE_XSIZE_fetch_compare_and_swap_write) |
| 82 | # define AO_XSIZE_fetch_compare_and_swap(addr, old_val, new_val) \ |
| 83 | AO_XSIZE_fetch_compare_and_swap_write(addr, old_val, new_val) |
| 84 | # define AO_HAVE_XSIZE_fetch_compare_and_swap |
| 85 | #endif |
| 86 | #if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap) \ |
| 87 | && defined(AO_HAVE_XSIZE_fetch_compare_and_swap_read) |
| 88 | # define AO_XSIZE_fetch_compare_and_swap(addr, old_val, new_val) \ |
| 89 | AO_XSIZE_fetch_compare_and_swap_read(addr, old_val, new_val) |
| 90 | # define AO_HAVE_XSIZE_fetch_compare_and_swap |
| 91 | #endif |
| 92 | |
| 93 | #if defined(AO_HAVE_XSIZE_fetch_compare_and_swap_acquire) \ |
| 94 | && defined(AO_HAVE_nop_full) \ |
| 95 | && !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_full) |
| 96 | # define AO_XSIZE_fetch_compare_and_swap_full(addr, old_val, new_val) \ |
| 97 | (AO_nop_full(), \ |
| 98 | AO_XSIZE_fetch_compare_and_swap_acquire(addr, old_val, new_val)) |
| 99 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_full |
| 100 | #endif |
| 101 | |
| 102 | #if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_release_write) \ |
| 103 | && defined(AO_HAVE_XSIZE_fetch_compare_and_swap_write) |
| 104 | # define AO_XSIZE_fetch_compare_and_swap_release_write(addr,old_val,new_val) \ |
| 105 | AO_XSIZE_fetch_compare_and_swap_write(addr, old_val, new_val) |
| 106 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_release_write |
| 107 | #endif |
| 108 | #if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_release_write) \ |
| 109 | && defined(AO_HAVE_XSIZE_fetch_compare_and_swap_release) |
| 110 | # define AO_XSIZE_fetch_compare_and_swap_release_write(addr,old_val,new_val) \ |
| 111 | AO_XSIZE_fetch_compare_and_swap_release(addr, old_val, new_val) |
| 112 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_release_write |
| 113 | #endif |
| 114 | #if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_acquire_read) \ |
| 115 | && defined(AO_HAVE_XSIZE_fetch_compare_and_swap_read) |
| 116 | # define AO_XSIZE_fetch_compare_and_swap_acquire_read(addr,old_val,new_val) \ |
| 117 | AO_XSIZE_fetch_compare_and_swap_read(addr, old_val, new_val) |
| 118 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_acquire_read |
| 119 | #endif |
| 120 | #if !defined(AO_HAVE_XSIZE_fetch_compare_and_swap_acquire_read) \ |
| 121 | && defined(AO_HAVE_XSIZE_fetch_compare_and_swap_acquire) |
| 122 | # define AO_XSIZE_fetch_compare_and_swap_acquire_read(addr,old_val,new_val) \ |
| 123 | AO_XSIZE_fetch_compare_and_swap_acquire(addr, old_val, new_val) |
| 124 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_acquire_read |
| 125 | #endif |
| 126 | |
| 127 | #ifdef AO_NO_DD_ORDERING |
| 128 | # if defined(AO_HAVE_XSIZE_fetch_compare_and_swap_acquire_read) |
| 129 | # define AO_XSIZE_fetch_compare_and_swap_dd_acquire_read(addr,old_val,new_val) \ |
| 130 | AO_XSIZE_fetch_compare_and_swap_acquire_read(addr, old_val, new_val) |
| 131 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_dd_acquire_read |
| 132 | # endif |
| 133 | #else |
| 134 | # if defined(AO_HAVE_XSIZE_fetch_compare_and_swap) |
| 135 | # define AO_XSIZE_fetch_compare_and_swap_dd_acquire_read(addr,old_val,new_val) \ |
| 136 | AO_XSIZE_fetch_compare_and_swap(addr, old_val, new_val) |
| 137 | # define AO_HAVE_XSIZE_fetch_compare_and_swap_dd_acquire_read |
| 138 | # endif |
| 139 | #endif /* !AO_NO_DD_ORDERING */ |
| 140 | |
| 141 | /* XSIZE_compare_and_swap */ |
| 142 | #if defined(AO_HAVE_XSIZE_compare_and_swap) && defined(AO_HAVE_nop_full) \ |
| 143 | && !defined(AO_HAVE_XSIZE_compare_and_swap_acquire) |
| 144 | AO_INLINE int |
| 145 | AO_XSIZE_compare_and_swap_acquire(volatile XCTYPE *addr, XCTYPE old, |
| 146 | XCTYPE new_val) |
| 147 | { |
| 148 | int result = AO_XSIZE_compare_and_swap(addr, old, new_val); |
| 149 | AO_nop_full(); |
| 150 | return result; |
| 151 | } |
| 152 | # define AO_HAVE_XSIZE_compare_and_swap_acquire |
| 153 | #endif |
| 154 | #if defined(AO_HAVE_XSIZE_compare_and_swap) && defined(AO_HAVE_nop_full) \ |
| 155 | && !defined(AO_HAVE_XSIZE_compare_and_swap_release) |
| 156 | # define AO_XSIZE_compare_and_swap_release(addr, old, new_val) \ |
| 157 | (AO_nop_full(), AO_XSIZE_compare_and_swap(addr, old, new_val)) |
| 158 | # define AO_HAVE_XSIZE_compare_and_swap_release |
| 159 | #endif |
| 160 | #if defined(AO_HAVE_XSIZE_compare_and_swap_full) |
| 161 | # if !defined(AO_HAVE_XSIZE_compare_and_swap_release) |
| 162 | # define AO_XSIZE_compare_and_swap_release(addr, old, new_val) \ |
| 163 | AO_XSIZE_compare_and_swap_full(addr, old, new_val) |
| 164 | # define AO_HAVE_XSIZE_compare_and_swap_release |
| 165 | # endif |
| 166 | # if !defined(AO_HAVE_XSIZE_compare_and_swap_acquire) |
| 167 | # define AO_XSIZE_compare_and_swap_acquire(addr, old, new_val) \ |
| 168 | AO_XSIZE_compare_and_swap_full(addr, old, new_val) |
| 169 | # define AO_HAVE_XSIZE_compare_and_swap_acquire |
| 170 | # endif |
| 171 | # if !defined(AO_HAVE_XSIZE_compare_and_swap_write) |
| 172 | # define AO_XSIZE_compare_and_swap_write(addr, old, new_val) \ |
| 173 | AO_XSIZE_compare_and_swap_full(addr, old, new_val) |
| 174 | # define AO_HAVE_XSIZE_compare_and_swap_write |
| 175 | # endif |
| 176 | # if !defined(AO_HAVE_XSIZE_compare_and_swap_read) |
| 177 | # define AO_XSIZE_compare_and_swap_read(addr, old, new_val) \ |
| 178 | AO_XSIZE_compare_and_swap_full(addr, old, new_val) |
| 179 | # define AO_HAVE_XSIZE_compare_and_swap_read |
| 180 | # endif |
| 181 | #endif /* AO_HAVE_XSIZE_compare_and_swap_full */ |
| 182 | |
| 183 | #if !defined(AO_HAVE_XSIZE_compare_and_swap) \ |
| 184 | && defined(AO_HAVE_XSIZE_compare_and_swap_release) |
| 185 | # define AO_XSIZE_compare_and_swap(addr, old, new_val) \ |
| 186 | AO_XSIZE_compare_and_swap_release(addr, old, new_val) |
| 187 | # define AO_HAVE_XSIZE_compare_and_swap |
| 188 | #endif |
| 189 | #if !defined(AO_HAVE_XSIZE_compare_and_swap) \ |
| 190 | && defined(AO_HAVE_XSIZE_compare_and_swap_acquire) |
| 191 | # define AO_XSIZE_compare_and_swap(addr, old, new_val) \ |
| 192 | AO_XSIZE_compare_and_swap_acquire(addr, old, new_val) |
| 193 | # define AO_HAVE_XSIZE_compare_and_swap |
| 194 | #endif |
| 195 | #if !defined(AO_HAVE_XSIZE_compare_and_swap) \ |
| 196 | && defined(AO_HAVE_XSIZE_compare_and_swap_write) |
| 197 | # define AO_XSIZE_compare_and_swap(addr, old, new_val) \ |
| 198 | AO_XSIZE_compare_and_swap_write(addr, old, new_val) |
| 199 | # define AO_HAVE_XSIZE_compare_and_swap |
| 200 | #endif |
| 201 | #if !defined(AO_HAVE_XSIZE_compare_and_swap) \ |
| 202 | && defined(AO_HAVE_XSIZE_compare_and_swap_read) |
| 203 | # define AO_XSIZE_compare_and_swap(addr, old, new_val) \ |
| 204 | AO_XSIZE_compare_and_swap_read(addr, old, new_val) |
| 205 | # define AO_HAVE_XSIZE_compare_and_swap |
| 206 | #endif |
| 207 | |
| 208 | #if defined(AO_HAVE_XSIZE_compare_and_swap_acquire) \ |
| 209 | && defined(AO_HAVE_nop_full) \ |
| 210 | && !defined(AO_HAVE_XSIZE_compare_and_swap_full) |
| 211 | # define AO_XSIZE_compare_and_swap_full(addr, old, new_val) \ |
| 212 | (AO_nop_full(), \ |
| 213 | AO_XSIZE_compare_and_swap_acquire(addr, old, new_val)) |
| 214 | # define AO_HAVE_XSIZE_compare_and_swap_full |
| 215 | #endif |
| 216 | |
| 217 | #if !defined(AO_HAVE_XSIZE_compare_and_swap_release_write) \ |
| 218 | && defined(AO_HAVE_XSIZE_compare_and_swap_write) |
| 219 | # define AO_XSIZE_compare_and_swap_release_write(addr, old, new_val) \ |
| 220 | AO_XSIZE_compare_and_swap_write(addr, old, new_val) |
| 221 | # define AO_HAVE_XSIZE_compare_and_swap_release_write |
| 222 | #endif |
| 223 | #if !defined(AO_HAVE_XSIZE_compare_and_swap_release_write) \ |
| 224 | && defined(AO_HAVE_XSIZE_compare_and_swap_release) |
| 225 | # define AO_XSIZE_compare_and_swap_release_write(addr, old, new_val) \ |
| 226 | AO_XSIZE_compare_and_swap_release(addr, old, new_val) |
| 227 | # define AO_HAVE_XSIZE_compare_and_swap_release_write |
| 228 | #endif |
| 229 | #if !defined(AO_HAVE_XSIZE_compare_and_swap_acquire_read) \ |
| 230 | && defined(AO_HAVE_XSIZE_compare_and_swap_read) |
| 231 | # define AO_XSIZE_compare_and_swap_acquire_read(addr, old, new_val) \ |
| 232 | AO_XSIZE_compare_and_swap_read(addr, old, new_val) |
| 233 | # define AO_HAVE_XSIZE_compare_and_swap_acquire_read |
| 234 | #endif |
| 235 | #if !defined(AO_HAVE_XSIZE_compare_and_swap_acquire_read) \ |
| 236 | && defined(AO_HAVE_XSIZE_compare_and_swap_acquire) |
| 237 | # define AO_XSIZE_compare_and_swap_acquire_read(addr, old, new_val) \ |
| 238 | AO_XSIZE_compare_and_swap_acquire(addr, old, new_val) |
| 239 | # define AO_HAVE_XSIZE_compare_and_swap_acquire_read |
| 240 | #endif |
| 241 | |
| 242 | #ifdef AO_NO_DD_ORDERING |
| 243 | # if defined(AO_HAVE_XSIZE_compare_and_swap_acquire_read) |
| 244 | # define AO_XSIZE_compare_and_swap_dd_acquire_read(addr, old, new_val) \ |
| 245 | AO_XSIZE_compare_and_swap_acquire_read(addr, old, new_val) |
| 246 | # define AO_HAVE_XSIZE_compare_and_swap_dd_acquire_read |
| 247 | # endif |
| 248 | #else |
| 249 | # if defined(AO_HAVE_XSIZE_compare_and_swap) |
| 250 | # define AO_XSIZE_compare_and_swap_dd_acquire_read(addr, old, new_val) \ |
| 251 | AO_XSIZE_compare_and_swap(addr, old, new_val) |
| 252 | # define AO_HAVE_XSIZE_compare_and_swap_dd_acquire_read |
| 253 | # endif |
| 254 | #endif /* !AO_NO_DD_ORDERING */ |
| 255 | |
| 256 | /* XSIZE_load */ |
| 257 | #if defined(AO_HAVE_XSIZE_load_full) && !defined(AO_HAVE_XSIZE_load_acquire) |
| 258 | # define AO_XSIZE_load_acquire(addr) AO_XSIZE_load_full(addr) |
| 259 | # define AO_HAVE_XSIZE_load_acquire |
| 260 | #endif |
| 261 | |
| 262 | #if defined(AO_HAVE_XSIZE_load_acquire) && !defined(AO_HAVE_XSIZE_load) |
| 263 | # define AO_XSIZE_load(addr) AO_XSIZE_load_acquire(addr) |
| 264 | # define AO_HAVE_XSIZE_load |
| 265 | #endif |
| 266 | |
| 267 | #if defined(AO_HAVE_XSIZE_load_full) && !defined(AO_HAVE_XSIZE_load_read) |
| 268 | # define AO_XSIZE_load_read(addr) AO_XSIZE_load_full(addr) |
| 269 | # define AO_HAVE_XSIZE_load_read |
| 270 | #endif |
| 271 | |
| 272 | #if !defined(AO_HAVE_XSIZE_load_acquire_read) \ |
| 273 | && defined(AO_HAVE_XSIZE_load_acquire) |
| 274 | # define AO_XSIZE_load_acquire_read(addr) AO_XSIZE_load_acquire(addr) |
| 275 | # define AO_HAVE_XSIZE_load_acquire_read |
| 276 | #endif |
| 277 | |
| 278 | #if defined(AO_HAVE_XSIZE_load) && defined(AO_HAVE_nop_full) \ |
| 279 | && !defined(AO_HAVE_XSIZE_load_acquire) |
| 280 | AO_INLINE XCTYPE |
| 281 | AO_XSIZE_load_acquire(const volatile XCTYPE *addr) |
| 282 | { |
| 283 | XCTYPE result = AO_XSIZE_load(addr); |
| 284 | |
| 285 | /* Acquire barrier would be useless, since the load could be delayed */ |
| 286 | /* beyond it. */ |
| 287 | AO_nop_full(); |
| 288 | return result; |
| 289 | } |
| 290 | # define AO_HAVE_XSIZE_load_acquire |
| 291 | #endif |
| 292 | |
| 293 | #if defined(AO_HAVE_XSIZE_load) && defined(AO_HAVE_nop_read) \ |
| 294 | && !defined(AO_HAVE_XSIZE_load_read) |
| 295 | AO_INLINE XCTYPE |
| 296 | AO_XSIZE_load_read(const volatile XCTYPE *addr) |
| 297 | { |
| 298 | XCTYPE result = AO_XSIZE_load(addr); |
| 299 | |
| 300 | AO_nop_read(); |
| 301 | return result; |
| 302 | } |
| 303 | # define AO_HAVE_XSIZE_load_read |
| 304 | #endif |
| 305 | |
| 306 | #if defined(AO_HAVE_XSIZE_load_acquire) && defined(AO_HAVE_nop_full) \ |
| 307 | && !defined(AO_HAVE_XSIZE_load_full) |
| 308 | # define AO_XSIZE_load_full(addr) (AO_nop_full(), AO_XSIZE_load_acquire(addr)) |
| 309 | # define AO_HAVE_XSIZE_load_full |
| 310 | #endif |
| 311 | |
| 312 | #if defined(AO_HAVE_XSIZE_compare_and_swap_read) \ |
| 313 | && !defined(AO_HAVE_XSIZE_load_read) |
| 314 | # define AO_XSIZE_CAS_BASED_LOAD_READ |
| 315 | AO_ATTR_NO_SANITIZE_THREAD |
| 316 | AO_INLINE XCTYPE |
| 317 | AO_XSIZE_load_read(const volatile XCTYPE *addr) |
| 318 | { |
| 319 | XCTYPE result; |
| 320 | |
| 321 | do { |
| 322 | result = *(const XCTYPE *)addr; |
| 323 | } while (AO_EXPECT_FALSE(!AO_XSIZE_compare_and_swap_read( |
| 324 | (volatile XCTYPE *)addr, |
| 325 | result, result))); |
| 326 | return result; |
| 327 | } |
| 328 | # define AO_HAVE_XSIZE_load_read |
| 329 | #endif |
| 330 | |
| 331 | #if !defined(AO_HAVE_XSIZE_load_acquire_read) \ |
| 332 | && defined(AO_HAVE_XSIZE_load_read) |
| 333 | # define AO_XSIZE_load_acquire_read(addr) AO_XSIZE_load_read(addr) |
| 334 | # define AO_HAVE_XSIZE_load_acquire_read |
| 335 | #endif |
| 336 | |
| 337 | #if defined(AO_HAVE_XSIZE_load_acquire_read) && !defined(AO_HAVE_XSIZE_load) \ |
| 338 | && (!defined(AO_XSIZE_CAS_BASED_LOAD_READ) \ |
| 339 | || !defined(AO_HAVE_XSIZE_compare_and_swap)) |
| 340 | # define AO_XSIZE_load(addr) AO_XSIZE_load_acquire_read(addr) |
| 341 | # define AO_HAVE_XSIZE_load |
| 342 | #endif |
| 343 | |
| 344 | #if defined(AO_HAVE_XSIZE_compare_and_swap_full) \ |
| 345 | && !defined(AO_HAVE_XSIZE_load_full) |
| 346 | AO_ATTR_NO_SANITIZE_THREAD |
| 347 | AO_INLINE XCTYPE |
| 348 | AO_XSIZE_load_full(const volatile XCTYPE *addr) |
| 349 | { |
| 350 | XCTYPE result; |
| 351 | |
| 352 | do { |
| 353 | result = *(const XCTYPE *)addr; |
| 354 | } while (AO_EXPECT_FALSE(!AO_XSIZE_compare_and_swap_full( |
| 355 | (volatile XCTYPE *)addr, |
| 356 | result, result))); |
| 357 | return result; |
| 358 | } |
| 359 | # define AO_HAVE_XSIZE_load_full |
| 360 | #endif |
| 361 | |
| 362 | #if defined(AO_HAVE_XSIZE_compare_and_swap_acquire) \ |
| 363 | && !defined(AO_HAVE_XSIZE_load_acquire) |
| 364 | AO_ATTR_NO_SANITIZE_THREAD |
| 365 | AO_INLINE XCTYPE |
| 366 | AO_XSIZE_load_acquire(const volatile XCTYPE *addr) |
| 367 | { |
| 368 | XCTYPE result; |
| 369 | |
| 370 | do { |
| 371 | result = *(const XCTYPE *)addr; |
| 372 | } while (AO_EXPECT_FALSE(!AO_XSIZE_compare_and_swap_acquire( |
| 373 | (volatile XCTYPE *)addr, |
| 374 | result, result))); |
| 375 | return result; |
| 376 | } |
| 377 | # define AO_HAVE_XSIZE_load_acquire |
| 378 | #endif |
| 379 | |
| 380 | #if defined(AO_HAVE_XSIZE_compare_and_swap) && !defined(AO_HAVE_XSIZE_load) |
| 381 | AO_ATTR_NO_SANITIZE_THREAD |
| 382 | AO_INLINE XCTYPE |
| 383 | AO_XSIZE_load(const volatile XCTYPE *addr) |
| 384 | { |
| 385 | XCTYPE result; |
| 386 | |
| 387 | do { |
| 388 | result = *(const XCTYPE *)addr; |
| 389 | } while (AO_EXPECT_FALSE(!AO_XSIZE_compare_and_swap( |
| 390 | (volatile XCTYPE *)addr, |
| 391 | result, result))); |
| 392 | return result; |
| 393 | } |
| 394 | # define AO_HAVE_XSIZE_load |
| 395 | #endif |
| 396 | |
| 397 | #ifdef AO_NO_DD_ORDERING |
| 398 | # if defined(AO_HAVE_XSIZE_load_acquire_read) |
| 399 | # define AO_XSIZE_load_dd_acquire_read(addr) \ |
| 400 | AO_XSIZE_load_acquire_read(addr) |
| 401 | # define AO_HAVE_XSIZE_load_dd_acquire_read |
| 402 | # endif |
| 403 | #else |
| 404 | # if defined(AO_HAVE_XSIZE_load) |
| 405 | # define AO_XSIZE_load_dd_acquire_read(addr) AO_XSIZE_load(addr) |
| 406 | # define AO_HAVE_XSIZE_load_dd_acquire_read |
| 407 | # endif |
| 408 | #endif /* !AO_NO_DD_ORDERING */ |
| 409 | |
| 410 | /* XSIZE_store */ |
| 411 | #if defined(AO_HAVE_XSIZE_store_full) && !defined(AO_HAVE_XSIZE_store_release) |
| 412 | # define AO_XSIZE_store_release(addr, val) AO_XSIZE_store_full(addr, val) |
| 413 | # define AO_HAVE_XSIZE_store_release |
| 414 | #endif |
| 415 | |
| 416 | #if defined(AO_HAVE_XSIZE_store_release) && !defined(AO_HAVE_XSIZE_store) |
| 417 | # define AO_XSIZE_store(addr, val) AO_XSIZE_store_release(addr, val) |
| 418 | # define AO_HAVE_XSIZE_store |
| 419 | #endif |
| 420 | |
| 421 | #if defined(AO_HAVE_XSIZE_store_full) && !defined(AO_HAVE_XSIZE_store_write) |
| 422 | # define AO_XSIZE_store_write(addr, val) AO_XSIZE_store_full(addr, val) |
| 423 | # define AO_HAVE_XSIZE_store_write |
| 424 | #endif |
| 425 | |
| 426 | #if defined(AO_HAVE_XSIZE_store_release) \ |
| 427 | && !defined(AO_HAVE_XSIZE_store_release_write) |
| 428 | # define AO_XSIZE_store_release_write(addr, val) \ |
| 429 | AO_XSIZE_store_release(addr, val) |
| 430 | # define AO_HAVE_XSIZE_store_release_write |
| 431 | #endif |
| 432 | |
| 433 | #if defined(AO_HAVE_XSIZE_store_write) && !defined(AO_HAVE_XSIZE_store) |
| 434 | # define AO_XSIZE_store(addr, val) AO_XSIZE_store_write(addr, val) |
| 435 | # define AO_HAVE_XSIZE_store |
| 436 | #endif |
| 437 | |
| 438 | #if defined(AO_HAVE_XSIZE_store) && defined(AO_HAVE_nop_full) \ |
| 439 | && !defined(AO_HAVE_XSIZE_store_release) |
| 440 | # define AO_XSIZE_store_release(addr, val) \ |
| 441 | (AO_nop_full(), AO_XSIZE_store(addr, val)) |
| 442 | # define AO_HAVE_XSIZE_store_release |
| 443 | #endif |
| 444 | |
| 445 | #if defined(AO_HAVE_XSIZE_store) && defined(AO_HAVE_nop_write) \ |
| 446 | && !defined(AO_HAVE_XSIZE_store_write) |
| 447 | # define AO_XSIZE_store_write(addr, val) \ |
| 448 | (AO_nop_write(), AO_XSIZE_store(addr, val)) |
| 449 | # define AO_HAVE_XSIZE_store_write |
| 450 | #endif |
| 451 | |
| 452 | #if defined(AO_HAVE_XSIZE_compare_and_swap_write) \ |
| 453 | && !defined(AO_HAVE_XSIZE_store_write) |
| 454 | AO_ATTR_NO_SANITIZE_MEMORY AO_ATTR_NO_SANITIZE_THREAD |
| 455 | AO_INLINE void |
| 456 | AO_XSIZE_store_write(volatile XCTYPE *addr, XCTYPE new_val) |
| 457 | { |
| 458 | XCTYPE old_val; |
| 459 | |
| 460 | do { |
| 461 | old_val = *(XCTYPE *)addr; |
| 462 | } while (AO_EXPECT_FALSE(!AO_XSIZE_compare_and_swap_write(addr, old_val, |
| 463 | new_val))); |
| 464 | } |
| 465 | # define AO_HAVE_XSIZE_store_write |
| 466 | #endif |
| 467 | |
| 468 | #if defined(AO_HAVE_XSIZE_store_write) \ |
| 469 | && !defined(AO_HAVE_XSIZE_store_release_write) |
| 470 | # define AO_XSIZE_store_release_write(addr, val) \ |
| 471 | AO_XSIZE_store_write(addr, val) |
| 472 | # define AO_HAVE_XSIZE_store_release_write |
| 473 | #endif |
| 474 | |
| 475 | #if defined(AO_HAVE_XSIZE_store_release) && defined(AO_HAVE_nop_full) \ |
| 476 | && !defined(AO_HAVE_XSIZE_store_full) |
| 477 | # define AO_XSIZE_store_full(addr, val) \ |
| 478 | (AO_XSIZE_store_release(addr, val), \ |
| 479 | AO_nop_full()) |
| 480 | # define AO_HAVE_XSIZE_store_full |
| 481 | #endif |
| 482 | |
| 483 | #if defined(AO_HAVE_XSIZE_compare_and_swap) && !defined(AO_HAVE_XSIZE_store) |
| 484 | AO_ATTR_NO_SANITIZE_MEMORY AO_ATTR_NO_SANITIZE_THREAD |
| 485 | AO_INLINE void |
| 486 | AO_XSIZE_store(volatile XCTYPE *addr, XCTYPE new_val) |
| 487 | { |
| 488 | XCTYPE old_val; |
| 489 | |
| 490 | do { |
| 491 | old_val = *(XCTYPE *)addr; |
| 492 | } while (AO_EXPECT_FALSE(!AO_XSIZE_compare_and_swap(addr, |
| 493 | old_val, new_val))); |
| 494 | } |
| 495 | # define AO_HAVE_XSIZE_store |
| 496 | #endif |
| 497 | |
| 498 | #if defined(AO_HAVE_XSIZE_compare_and_swap_release) \ |
| 499 | && !defined(AO_HAVE_XSIZE_store_release) |
| 500 | AO_ATTR_NO_SANITIZE_MEMORY AO_ATTR_NO_SANITIZE_THREAD |
| 501 | AO_INLINE void |
| 502 | AO_XSIZE_store_release(volatile XCTYPE *addr, XCTYPE new_val) |
| 503 | { |
| 504 | XCTYPE old_val; |
| 505 | |
| 506 | do { |
| 507 | old_val = *(XCTYPE *)addr; |
| 508 | } while (AO_EXPECT_FALSE(!AO_XSIZE_compare_and_swap_release(addr, old_val, |
| 509 | new_val))); |
| 510 | } |
| 511 | # define AO_HAVE_XSIZE_store_release |
| 512 | #endif |
| 513 | |
| 514 | #if defined(AO_HAVE_XSIZE_compare_and_swap_full) \ |
| 515 | && !defined(AO_HAVE_XSIZE_store_full) |
| 516 | AO_ATTR_NO_SANITIZE_MEMORY AO_ATTR_NO_SANITIZE_THREAD |
| 517 | AO_INLINE void |
| 518 | AO_XSIZE_store_full(volatile XCTYPE *addr, XCTYPE new_val) |
| 519 | { |
| 520 | XCTYPE old_val; |
| 521 | |
| 522 | do { |
| 523 | old_val = *(XCTYPE *)addr; |
| 524 | } while (AO_EXPECT_FALSE(!AO_XSIZE_compare_and_swap_full(addr, old_val, |
| 525 | new_val))); |
| 526 | } |
| 527 | # define AO_HAVE_XSIZE_store_full |
| 528 | #endif |
| 529 | |