* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Ryan Lortie <desrt@desrt.ca>
*/
+#ifndef __G_ATOMIC_H__
+#define __G_ATOMIC_H__
+
#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
#error "Only <glib.h> can be included directly."
#endif
-#ifndef __G_ATOMIC_H__
-#define __G_ATOMIC_H__
-
#include <glib/gtypes.h>
G_BEGIN_DECLS
-gint g_atomic_int_get (volatile gint *atomic);
+GLIB_AVAILABLE_IN_ALL
+gint g_atomic_int_get (const volatile gint *atomic);
+GLIB_AVAILABLE_IN_ALL
void g_atomic_int_set (volatile gint *atomic,
gint newval);
+GLIB_AVAILABLE_IN_ALL
void g_atomic_int_inc (volatile gint *atomic);
+GLIB_AVAILABLE_IN_ALL
gboolean g_atomic_int_dec_and_test (volatile gint *atomic);
+GLIB_AVAILABLE_IN_ALL
gboolean g_atomic_int_compare_and_exchange (volatile gint *atomic,
gint oldval,
gint newval);
+GLIB_AVAILABLE_IN_ALL
gint g_atomic_int_add (volatile gint *atomic,
gint val);
+GLIB_AVAILABLE_IN_2_30
guint g_atomic_int_and (volatile guint *atomic,
guint val);
+GLIB_AVAILABLE_IN_2_30
guint g_atomic_int_or (volatile guint *atomic,
guint val);
+GLIB_AVAILABLE_IN_ALL
guint g_atomic_int_xor (volatile guint *atomic,
guint val);
-gpointer g_atomic_pointer_get (volatile void *atomic);
+GLIB_AVAILABLE_IN_ALL
+gpointer g_atomic_pointer_get (const volatile void *atomic);
+GLIB_AVAILABLE_IN_ALL
void g_atomic_pointer_set (volatile void *atomic,
gpointer newval);
+GLIB_AVAILABLE_IN_ALL
gboolean g_atomic_pointer_compare_and_exchange (volatile void *atomic,
gpointer oldval,
gpointer newval);
+GLIB_AVAILABLE_IN_ALL
gssize g_atomic_pointer_add (volatile void *atomic,
gssize val);
+GLIB_AVAILABLE_IN_2_30
gsize g_atomic_pointer_and (volatile void *atomic,
gsize val);
+GLIB_AVAILABLE_IN_2_30
gsize g_atomic_pointer_or (volatile void *atomic,
gsize val);
+GLIB_AVAILABLE_IN_ALL
gsize g_atomic_pointer_xor (volatile void *atomic,
gsize val);
-GLIB_DEPRECATED_FOR(g_atomic_add)
+GLIB_DEPRECATED_IN_2_30_FOR(g_atomic_int_add)
gint g_atomic_int_exchange_and_add (volatile gint *atomic,
gint val);
#if defined(G_ATOMIC_LOCK_FREE) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
+/* We prefer the new C11-style atomic extension of GCC if available */
+#if defined(__ATOMIC_SEQ_CST) && !defined(__clang__)
+
+#define g_atomic_int_get(atomic) \
+ (G_GNUC_EXTENSION ({ \
+ G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
+ (void) (0 ? *(atomic) ^ *(atomic) : 0); \
+ (gint) __atomic_load_4 ((atomic), __ATOMIC_SEQ_CST); \
+ }))
+#define g_atomic_int_set(atomic, newval) \
+ (G_GNUC_EXTENSION ({ \
+ G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
+ (void) (0 ? *(atomic) ^ (newval) : 0); \
+ __atomic_store_4 ((atomic), (newval), __ATOMIC_SEQ_CST); \
+ }))
+
+#if GLIB_SIZEOF_VOID_P == 8
+
+#define g_atomic_pointer_get(atomic) \
+ (G_GNUC_EXTENSION ({ \
+ G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
+ (gpointer) __atomic_load_8 ((atomic), __ATOMIC_SEQ_CST); \
+ }))
+#define g_atomic_pointer_set(atomic, newval) \
+ (G_GNUC_EXTENSION ({ \
+ G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
+ (void) (0 ? (gpointer) *(atomic) : 0); \
+ __atomic_store_8 ((atomic), (gsize) (newval), __ATOMIC_SEQ_CST); \
+ }))
+
+#else /* GLIB_SIZEOF_VOID_P == 8 */
+
+#define g_atomic_pointer_get(atomic) \
+ (G_GNUC_EXTENSION ({ \
+ G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
+ (gpointer) __atomic_load_4 ((atomic), __ATOMIC_SEQ_CST); \
+ }))
+#define g_atomic_pointer_set(atomic, newval) \
+ (G_GNUC_EXTENSION ({ \
+ G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
+ (void) (0 ? (gpointer) *(atomic) : 0); \
+ __atomic_store_4 ((atomic), (gsize) (newval), __ATOMIC_SEQ_CST); \
+ }))
+
+#endif /* GLIB_SIZEOF_VOID_P == 8 */
+
+#else /* defined(__ATOMIC_SEQ_CST) */
+
#define g_atomic_int_get(atomic) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ *(atomic) : 0); \
__sync_synchronize (); \
(gint) *(atomic); \
}))
#define g_atomic_int_set(atomic, newval) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ (newval) : 0); \
*(atomic) = (newval); \
__sync_synchronize (); \
}))
+#define g_atomic_pointer_get(atomic) \
+ (G_GNUC_EXTENSION ({ \
+ G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
+ __sync_synchronize (); \
+ (gpointer) *(atomic); \
+ }))
+#define g_atomic_pointer_set(atomic, newval) \
+ (G_GNUC_EXTENSION ({ \
+ G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
+ (void) (0 ? (gpointer) *(atomic) : 0); \
+ *(atomic) = (__typeof__ (*(atomic))) (gsize) (newval); \
+ __sync_synchronize (); \
+ }))
+
+#endif /* !defined(__ATOMIC_SEQ_CST) */
+
#define g_atomic_int_inc(atomic) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ *(atomic) : 0); \
(void) __sync_fetch_and_add ((atomic), 1); \
}))
#define g_atomic_int_dec_and_test(atomic) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ *(atomic) : 0); \
__sync_fetch_and_sub ((atomic), 1) == 1; \
}))
#define g_atomic_int_compare_and_exchange(atomic, oldval, newval) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ (newval) ^ (oldval) : 0); \
(gboolean) __sync_bool_compare_and_swap ((atomic), (oldval), (newval)); \
}))
#define g_atomic_int_add(atomic, val) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ (val) : 0); \
(gint) __sync_fetch_and_add ((atomic), (val)); \
}))
#define g_atomic_int_and(atomic, val) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ (val) : 0); \
(guint) __sync_fetch_and_and ((atomic), (val)); \
}))
#define g_atomic_int_or(atomic, val) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ (val) : 0); \
(guint) __sync_fetch_and_or ((atomic), (val)); \
}))
#define g_atomic_int_xor(atomic, val) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gint)); \
(void) (0 ? *(atomic) ^ (val) : 0); \
(guint) __sync_fetch_and_xor ((atomic), (val)); \
}))
-#define g_atomic_pointer_get(atomic) \
- (G_GNUC_EXTENSION ({ \
- G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
- __sync_synchronize (); \
- (gpointer) *(atomic); \
- }))
-#define g_atomic_pointer_set(atomic, newval) \
- (G_GNUC_EXTENSION ({ \
- G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
- (void) (0 ? (gpointer) *(atomic) : 0); \
- *(atomic) = (__typeof__ (*(atomic))) (gsize) (newval); \
- __sync_synchronize (); \
- }))
#define g_atomic_pointer_compare_and_exchange(atomic, oldval, newval) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
(void) (0 ? (gpointer) *(atomic) : 0); \
(gboolean) __sync_bool_compare_and_swap ((atomic), (oldval), (newval)); \
}))
#define g_atomic_pointer_add(atomic, val) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
(void) (0 ? (gpointer) *(atomic) : 0); \
(void) (0 ? (val) ^ (val) : 0); \
(gssize) __sync_fetch_and_add ((atomic), (val)); \
}))
#define g_atomic_pointer_and(atomic, val) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
(void) (0 ? (gpointer) *(atomic) : 0); \
(void) (0 ? (val) ^ (val) : 0); \
(gsize) __sync_fetch_and_and ((atomic), (val)); \
}))
#define g_atomic_pointer_or(atomic, val) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
(void) (0 ? (gpointer) *(atomic) : 0); \
(void) (0 ? (val) ^ (val) : 0); \
(gsize) __sync_fetch_and_or ((atomic), (val)); \
}))
#define g_atomic_pointer_xor(atomic, val) \
- (G_GNUC_EXTENSION ({ \
+ (G_GNUC_EXTENSION ({ \
G_STATIC_ASSERT (sizeof *(atomic) == sizeof (gpointer)); \
(void) (0 ? (gpointer) *(atomic) : 0); \
(void) (0 ? (val) ^ (val) : 0); \
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