glib/gatomic.h

   1 /*
   2  * Copyright © 2011 Ryan Lortie
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  *
  17  * Author: Ryan Lortie <desrt@desrt.ca>
  18  */
  19
  20 #ifndef __G_ATOMIC_H__
  21 #define __G_ATOMIC_H__
  22
  23 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
  24 #error "Only <glib.h> can be included directly."
  25 #endif
  26
  27 #include <glib/gtypes.h>
  28
  29 G_BEGIN_DECLS
  30
  31 GLIB_AVAILABLE_IN_ALL
  32 gint                    g_atomic_int_get                      (const volatile gint *atomic);
  33 GLIB_AVAILABLE_IN_ALL
  34 void                    g_atomic_int_set                      (volatile gint  *atomic,
  35                                                                gint            newval);
  36 GLIB_AVAILABLE_IN_ALL
  37 void                    g_atomic_int_inc                      (volatile gint  *atomic);
  38 GLIB_AVAILABLE_IN_ALL
  39 gboolean                g_atomic_int_dec_and_test             (volatile gint  *atomic);
  40 GLIB_AVAILABLE_IN_ALL
  41 gboolean                g_atomic_int_compare_and_exchange     (volatile gint  *atomic,
  42                                                                gint            oldval,
  43                                                                gint            newval);
  44 GLIB_AVAILABLE_IN_ALL
  45 gint                    g_atomic_int_add                      (volatile gint  *atomic,
  46                                                                gint            val);
  47 GLIB_AVAILABLE_IN_2_30
  48 guint                   g_atomic_int_and                      (volatile guint *atomic,
  49                                                                guint           val);
  50 GLIB_AVAILABLE_IN_2_30
  51 guint                   g_atomic_int_or                       (volatile guint *atomic,
  52                                                                guint           val);
  53 GLIB_AVAILABLE_IN_ALL
  54 guint                   g_atomic_int_xor                      (volatile guint *atomic,
  55                                                                guint           val);
  56
  57 GLIB_AVAILABLE_IN_ALL
  58 gpointer                g_atomic_pointer_get                  (const volatile void *atomic);
  59 GLIB_AVAILABLE_IN_ALL
  60 void                    g_atomic_pointer_set                  (volatile void  *atomic,
  61                                                                gpointer        newval);
  62 GLIB_AVAILABLE_IN_ALL
  63 gboolean                g_atomic_pointer_compare_and_exchange (volatile void  *atomic,
  64                                                                gpointer        oldval,
  65                                                                gpointer        newval);
  66 GLIB_AVAILABLE_IN_ALL
  67 gssize                  g_atomic_pointer_add                  (volatile void  *atomic,
  68                                                                gssize          val);
  69 GLIB_AVAILABLE_IN_2_30
  70 gsize                   g_atomic_pointer_and                  (volatile void  *atomic,
  71                                                                gsize           val);
  72 GLIB_AVAILABLE_IN_2_30
  73 gsize                   g_atomic_pointer_or                   (volatile void  *atomic,
  74                                                                gsize           val);
  75 GLIB_AVAILABLE_IN_ALL
  76 gsize                   g_atomic_pointer_xor                  (volatile void  *atomic,
  77                                                                gsize           val);
  78
  79 GLIB_DEPRECATED_IN_2_30_FOR(g_atomic_int_add)
  80 gint                    g_atomic_int_exchange_and_add         (volatile gint  *atomic,
  81                                                                gint            val);
  82
  83 G_END_DECLS
  84
  85 #if defined(G_ATOMIC_LOCK_FREE) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
  86
  87 /* We prefer the new C11-style atomic extension of GCC if available */
  88 #if defined(__ATOMIC_SEQ_CST)
  89
  90 #define g_atomic_int_get(atomic) \
  91   (G_GNUC_EXTENSION ({                                                       \
  92     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
  93     gint gaig_temp;                                                          \
  94     (void) (0 ? *(atomic) ^ *(atomic) : 1);                                  \
  95     __atomic_load ((gint *)(atomic), &gaig_temp, __ATOMIC_SEQ_CST);          \
  96     (gint) gaig_temp;                                                        \
  97   }))
  98 #define g_atomic_int_set(atomic, newval) \
  99   (G_GNUC_EXTENSION ({                                                       \
 100     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 101     gint gais_temp = (gint) (newval);                                        \
 102     (void) (0 ? *(atomic) ^ (newval) : 1);                                   \
 103     __atomic_store ((gint *)(atomic), &gais_temp, __ATOMIC_SEQ_CST);         \
 104   }))
 105
 106 #if defined(glib_typeof)
 107 #define g_atomic_pointer_get(atomic)                                       \
 108   (G_GNUC_EXTENSION ({                                                     \
 109     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));               \
 110     glib_typeof (*(atomic)) gapg_temp_newval;                              \
 111     glib_typeof ((atomic)) gapg_temp_atomic = (atomic);                    \
 112     __atomic_load (gapg_temp_atomic, &gapg_temp_newval, __ATOMIC_SEQ_CST); \
 113     gapg_temp_newval;                                                      \
 114   }))
 115 #define g_atomic_pointer_set(atomic, newval)                                \
 116   (G_GNUC_EXTENSION ({                                                      \
 117     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                \
 118     glib_typeof ((atomic)) gaps_temp_atomic = (atomic);                     \
 119     glib_typeof (*(atomic)) gaps_temp_newval = (newval);                    \
 120     (void) (0 ? (gpointer) * (atomic) : NULL);                              \
 121     __atomic_store (gaps_temp_atomic, &gaps_temp_newval, __ATOMIC_SEQ_CST); \
 122   }))
 123 #else /* if !defined(glib_typeof) */
 124 #define g_atomic_pointer_get(atomic) \
 125   (G_GNUC_EXTENSION ({                                                       \
 126     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 127     gpointer gapg_temp_newval;                                               \
 128     gpointer *gapg_temp_atomic = (gpointer *)(atomic);                       \
 129     __atomic_load (gapg_temp_atomic, &gapg_temp_newval, __ATOMIC_SEQ_CST);   \
 130     gapg_temp_newval;                                                        \
 131   }))
 132 #define g_atomic_pointer_set(atomic, newval) \
 133   (G_GNUC_EXTENSION ({                                                       \
 134     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 135     gpointer *gaps_temp_atomic = (gpointer *)(atomic);                       \
 136     gpointer gaps_temp_newval = (gpointer)(newval);                          \
 137     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 138     __atomic_store (gaps_temp_atomic, &gaps_temp_newval, __ATOMIC_SEQ_CST);  \
 139   }))
 140 #endif /* !defined(glib_typeof) */
 141
 142 #define g_atomic_int_inc(atomic) \
 143   (G_GNUC_EXTENSION ({                                                       \
 144     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 145     (void) (0 ? *(atomic) ^ *(atomic) : 1);                                  \
 146     (void) __atomic_fetch_add ((atomic), 1, __ATOMIC_SEQ_CST);               \
 147   }))
 148 #define g_atomic_int_dec_and_test(atomic) \
 149   (G_GNUC_EXTENSION ({                                                       \
 150     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 151     (void) (0 ? *(atomic) ^ *(atomic) : 1);                                  \
 152     __atomic_fetch_sub ((atomic), 1, __ATOMIC_SEQ_CST) == 1;                 \
 153   }))
 154 #define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \
 155   (G_GNUC_EXTENSION ({                                                       \
 156     gint gaicae_oldval = (oldval);                                           \
 157     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 158     (void) (0 ? *(atomic) ^ (newval) ^ (oldval) : 1);                        \
 159     __atomic_compare_exchange_n ((atomic), &gaicae_oldval, (newval), FALSE, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) ? TRUE : FALSE; \
 160   }))
 161 #define g_atomic_int_add(atomic, val) \
 162   (G_GNUC_EXTENSION ({                                                       \
 163     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 164     (void) (0 ? *(atomic) ^ (val) : 1);                                      \
 165     (gint) __atomic_fetch_add ((atomic), (val), __ATOMIC_SEQ_CST);           \
 166   }))
 167 #define g_atomic_int_and(atomic, val) \
 168   (G_GNUC_EXTENSION ({                                                       \
 169     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 170     (void) (0 ? *(atomic) ^ (val) : 1);                                      \
 171     (guint) __atomic_fetch_and ((atomic), (val), __ATOMIC_SEQ_CST);          \
 172   }))
 173 #define g_atomic_int_or(atomic, val) \
 174   (G_GNUC_EXTENSION ({                                                       \
 175     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 176     (void) (0 ? *(atomic) ^ (val) : 1);                                      \
 177     (guint) __atomic_fetch_or ((atomic), (val), __ATOMIC_SEQ_CST);           \
 178   }))
 179 #define g_atomic_int_xor(atomic, val) \
 180   (G_GNUC_EXTENSION ({                                                       \
 181     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 182     (void) (0 ? *(atomic) ^ (val) : 1);                                      \
 183     (guint) __atomic_fetch_xor ((atomic), (val), __ATOMIC_SEQ_CST);          \
 184   }))
 185
 186 #if defined(glib_typeof)
 187 #define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
 188   (G_GNUC_EXTENSION ({                                                       \
 189     G_STATIC_ASSERT (sizeof (oldval) == sizeof (gpointer));                  \
 190     glib_typeof ((oldval)) gapcae_oldval = (oldval);                         \
 191     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 192     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 193     __atomic_compare_exchange_n ((atomic), &gapcae_oldval, (newval), FALSE, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) ? TRUE : FALSE; \
 194   }))
 195 #else /* if !defined(glib_typeof) */
 196 #define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
 197   (G_GNUC_EXTENSION ({                                                       \
 198     G_STATIC_ASSERT (sizeof (oldval) == sizeof (gpointer));                  \
 199     gpointer gapcae_oldval = (gpointer)(oldval);                             \
 200     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 201     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 202     __atomic_compare_exchange_n ((atomic), &gapcae_oldval, (newval), FALSE, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) ? TRUE : FALSE; \
 203   }))
 204 #endif /* defined(glib_typeof) */
 205 #define g_atomic_pointer_add(atomic, val) \
 206   (G_GNUC_EXTENSION ({                                                       \
 207     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 208     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 209     (void) (0 ? (val) ^ (val) : 1);                                          \
 210     (gssize) __atomic_fetch_add ((atomic), (val), __ATOMIC_SEQ_CST);         \
 211   }))
 212 #define g_atomic_pointer_and(atomic, val) \
 213   (G_GNUC_EXTENSION ({                                                       \
 214     volatile gsize *gapa_atomic = (volatile gsize *) (atomic);               \
 215     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 216     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gsize));                    \
 217     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 218     (void) (0 ? (val) ^ (val) : 1);                                          \
 219     (gsize) __atomic_fetch_and (gapa_atomic, (val), __ATOMIC_SEQ_CST);       \
 220   }))
 221 #define g_atomic_pointer_or(atomic, val) \
 222   (G_GNUC_EXTENSION ({                                                       \
 223     volatile gsize *gapo_atomic = (volatile gsize *) (atomic);               \
 224     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 225     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gsize));                    \
 226     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 227     (void) (0 ? (val) ^ (val) : 1);                                          \
 228     (gsize) __atomic_fetch_or (gapo_atomic, (val), __ATOMIC_SEQ_CST);        \
 229   }))
 230 #define g_atomic_pointer_xor(atomic, val) \
 231   (G_GNUC_EXTENSION ({                                                       \
 232     volatile gsize *gapx_atomic = (volatile gsize *) (atomic);               \
 233     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 234     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gsize));                    \
 235     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 236     (void) (0 ? (val) ^ (val) : 1);                                          \
 237     (gsize) __atomic_fetch_xor (gapx_atomic, (val), __ATOMIC_SEQ_CST);       \
 238   }))
 239
 240 #else /* defined(__ATOMIC_SEQ_CST) */
 241
 242 /* We want to achieve __ATOMIC_SEQ_CST semantics here. See
 243  * https://en.cppreference.com/w/c/atomic/memory_order#Constants. For load
 244  * operations, that means performing an *acquire*:
 245  * > A load operation with this memory order performs the acquire operation on
 246  * > the affected memory location: no reads or writes in the current thread can
 247  * > be reordered before this load. All writes in other threads that release
 248  * > the same atomic variable are visible in the current thread.
 249  *
 250  * “no reads or writes in the current thread can be reordered before this load”
 251  * is implemented using a compiler barrier (a no-op `__asm__` section) to
 252  * prevent instruction reordering. Writes in other threads are synchronised
 253  * using `__sync_synchronize()`. It’s unclear from the GCC documentation whether
 254  * `__sync_synchronize()` acts as a compiler barrier, hence our explicit use of
 255  * one.
 256  *
 257  * For store operations, `__ATOMIC_SEQ_CST` means performing a *release*:
 258  * > A store operation with this memory order performs the release operation:
 259  * > no reads or writes in the current thread can be reordered after this store.
 260  * > All writes in the current thread are visible in other threads that acquire
 261  * > the same atomic variable (see Release-Acquire ordering below) and writes
 262  * > that carry a dependency into the atomic variable become visible in other
 263  * > threads that consume the same atomic (see Release-Consume ordering below).
 264  *
 265  * “no reads or writes in the current thread can be reordered after this store”
 266  * is implemented using a compiler barrier to prevent instruction reordering.
 267  * “All writes in the current thread are visible in other threads” is implemented
 268  * using `__sync_synchronize()`; similarly for “writes that carry a dependency”.
 269  */
 270 #define g_atomic_int_get(atomic) \
 271   (G_GNUC_EXTENSION ({                                                       \
 272     gint gaig_result;                                                        \
 273     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 274     (void) (0 ? *(atomic) ^ *(atomic) : 1);                                  \
 275     gaig_result = (gint) *(atomic);                                          \
 276     __sync_synchronize ();                                                   \
 277     __asm__ __volatile__ ("" : : : "memory");                                \
 278     gaig_result;                                                             \
 279   }))
 280 #define g_atomic_int_set(atomic, newval) \
 281   (G_GNUC_EXTENSION ({                                                       \
 282     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 283     (void) (0 ? *(atomic) ^ (newval) : 1);                                   \
 284     __sync_synchronize ();                                                   \
 285     __asm__ __volatile__ ("" : : : "memory");                                \
 286     *(atomic) = (newval);                                                    \
 287   }))
 288 #define g_atomic_pointer_get(atomic) \
 289   (G_GNUC_EXTENSION ({                                                       \
 290     gpointer gapg_result;                                                    \
 291     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 292     gapg_result = (gpointer) *(atomic);                                      \
 293     __sync_synchronize ();                                                   \
 294     __asm__ __volatile__ ("" : : : "memory");                                \
 295     gapg_result;                                                             \
 296   }))
 297 #if defined(glib_typeof)
 298 #define g_atomic_pointer_set(atomic, newval) \
 299   (G_GNUC_EXTENSION ({                                                       \
 300     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 301     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 302     __sync_synchronize ();                                                   \
 303     __asm__ __volatile__ ("" : : : "memory");                                \
 304     *(atomic) = (glib_typeof (*(atomic))) (gsize) (newval);                  \
 305   }))
 306 #else /* if !defined(glib_typeof) */
 307 #define g_atomic_pointer_set(atomic, newval) \
 308   (G_GNUC_EXTENSION ({                                                       \
 309     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 310     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 311     __sync_synchronize ();                                                   \
 312     __asm__ __volatile__ ("" : : : "memory");                                \
 313     *(atomic) = (gpointer) (gsize) (newval);                                         \
 314   }))
 315 #endif /* defined(glib_typeof) */
 316
 317 #define g_atomic_int_inc(atomic) \
 318   (G_GNUC_EXTENSION ({                                                       \
 319     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 320     (void) (0 ? *(atomic) ^ *(atomic) : 1);                                  \
 321     (void) __sync_fetch_and_add ((atomic), 1);                               \
 322   }))
 323 #define g_atomic_int_dec_and_test(atomic) \
 324   (G_GNUC_EXTENSION ({                                                       \
 325     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 326     (void) (0 ? *(atomic) ^ *(atomic) : 1);                                  \
 327     __sync_fetch_and_sub ((atomic), 1) == 1;                                 \
 328   }))
 329 #define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \
 330   (G_GNUC_EXTENSION ({                                                       \
 331     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 332     (void) (0 ? *(atomic) ^ (newval) ^ (oldval) : 1);                        \
 333     __sync_bool_compare_and_swap ((atomic), (oldval), (newval)) ? TRUE : FALSE; \
 334   }))
 335 #define g_atomic_int_add(atomic, val) \
 336   (G_GNUC_EXTENSION ({                                                       \
 337     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 338     (void) (0 ? *(atomic) ^ (val) : 1);                                      \
 339     (gint) __sync_fetch_and_add ((atomic), (val));                           \
 340   }))
 341 #define g_atomic_int_and(atomic, val) \
 342   (G_GNUC_EXTENSION ({                                                       \
 343     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 344     (void) (0 ? *(atomic) ^ (val) : 1);                                      \
 345     (guint) __sync_fetch_and_and ((atomic), (val));                          \
 346   }))
 347 #define g_atomic_int_or(atomic, val) \
 348   (G_GNUC_EXTENSION ({                                                       \
 349     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 350     (void) (0 ? *(atomic) ^ (val) : 1);                                      \
 351     (guint) __sync_fetch_and_or ((atomic), (val));                           \
 352   }))
 353 #define g_atomic_int_xor(atomic, val) \
 354   (G_GNUC_EXTENSION ({                                                       \
 355     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint));                     \
 356     (void) (0 ? *(atomic) ^ (val) : 1);                                      \
 357     (guint) __sync_fetch_and_xor ((atomic), (val));                          \
 358   }))
 359
 360 #define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
 361   (G_GNUC_EXTENSION ({                                                       \
 362     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 363     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 364     __sync_bool_compare_and_swap ((atomic), (oldval), (newval)) ? TRUE : FALSE; \
 365   }))
 366 #define g_atomic_pointer_add(atomic, val) \
 367   (G_GNUC_EXTENSION ({                                                       \
 368     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 369     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 370     (void) (0 ? (val) ^ (val) : 1);                                          \
 371     (gssize) __sync_fetch_and_add ((atomic), (val));                         \
 372   }))
 373 #define g_atomic_pointer_and(atomic, val) \
 374   (G_GNUC_EXTENSION ({                                                       \
 375     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 376     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 377     (void) (0 ? (val) ^ (val) : 1);                                          \
 378     (gsize) __sync_fetch_and_and ((atomic), (val));                          \
 379   }))
 380 #define g_atomic_pointer_or(atomic, val) \
 381   (G_GNUC_EXTENSION ({                                                       \
 382     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 383     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 384     (void) (0 ? (val) ^ (val) : 1);                                          \
 385     (gsize) __sync_fetch_and_or ((atomic), (val));                           \
 386   }))
 387 #define g_atomic_pointer_xor(atomic, val) \
 388   (G_GNUC_EXTENSION ({                                                       \
 389     G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer));                 \
 390     (void) (0 ? (gpointer) *(atomic) : NULL);                                \
 391     (void) (0 ? (val) ^ (val) : 1);                                          \
 392     (gsize) __sync_fetch_and_xor ((atomic), (val));                          \
 393   }))
 394
 395 #endif /* !defined(__ATOMIC_SEQ_CST) */
 396
 397 #else /* defined(G_ATOMIC_LOCK_FREE) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) */
 398
 399 #define g_atomic_int_get(atomic) \
 400   (g_atomic_int_get ((gint *) (atomic)))
 401 #define g_atomic_int_set(atomic, newval) \
 402   (g_atomic_int_set ((gint *) (atomic), (gint) (newval)))
 403 #define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \
 404   (g_atomic_int_compare_and_exchange ((gint *) (atomic), (oldval), (newval)))
 405 #define g_atomic_int_add(atomic, val) \
 406   (g_atomic_int_add ((gint *) (atomic), (val)))
 407 #define g_atomic_int_and(atomic, val) \
 408   (g_atomic_int_and ((guint *) (atomic), (val)))
 409 #define g_atomic_int_or(atomic, val) \
 410   (g_atomic_int_or ((guint *) (atomic), (val)))
 411 #define g_atomic_int_xor(atomic, val) \
 412   (g_atomic_int_xor ((guint *) (atomic), (val)))
 413 #define g_atomic_int_inc(atomic) \
 414   (g_atomic_int_inc ((gint *) (atomic)))
 415 #define g_atomic_int_dec_and_test(atomic) \
 416   (g_atomic_int_dec_and_test ((gint *) (atomic)))
 417
 418 #define g_atomic_pointer_get(atomic) \
 419   (g_atomic_pointer_get (atomic))
 420 #define g_atomic_pointer_set(atomic, newval) \
 421   (g_atomic_pointer_set ((atomic), (gpointer) (newval)))
 422 #define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
 423   (g_atomic_pointer_compare_and_exchange ((atomic), (gpointer) (oldval), (gpointer) (newval)))
 424 #define g_atomic_pointer_add(atomic, val) \
 425   (g_atomic_pointer_add ((atomic), (gssize) (val)))
 426 #define g_atomic_pointer_and(atomic, val) \
 427   (g_atomic_pointer_and ((atomic), (gsize) (val)))
 428 #define g_atomic_pointer_or(atomic, val) \
 429   (g_atomic_pointer_or ((atomic), (gsize) (val)))
 430 #define g_atomic_pointer_xor(atomic, val) \
 431   (g_atomic_pointer_xor ((atomic), (gsize) (val)))
 432
 433 #endif /* defined(G_ATOMIC_LOCK_FREE) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) */
 434
 435 #endif /* __G_ATOMIC_H__ */