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Compat futex
[urcu.git]
/
urcu-pointer.c
diff --git
a/urcu-pointer.c
b/urcu-pointer.c
index da8b1ea7e76d0c702af5adb37f32361597525022..83f0ffdacb388cdc87016a9a10408fe7b712e62d 100644
(file)
--- a/
urcu-pointer.c
+++ b/
urcu-pointer.c
@@
-24,6
+24,8
@@
* IBM's contributions to this file may be relicensed under LGPLv2 or later.
*/
* IBM's contributions to this file may be relicensed under LGPLv2 or later.
*/
+#include <urcu/uatomic_arch.h>
+
#include "urcu-pointer-static.h"
/* Do not #define _LGPL_SOURCE to ensure we can emit the wrapper symbols */
#include "urcu-pointer.h"
#include "urcu-pointer-static.h"
/* Do not #define _LGPL_SOURCE to ensure we can emit the wrapper symbols */
#include "urcu-pointer.h"
@@
-50,5
+52,9
@@
void *rcu_xchg_pointer_sym(void **p, void *v)
void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new)
{
wmb();
void *rcu_cmpxchg_pointer_sym(void **p, void *old, void *_new)
{
wmb();
- return uatomic_cmpxchg(p, old, _new);
+ if (likely(URCU_CAS_AVAIL()))
+ return uatomic_cmpxchg(p, old, _new);
+
+ /* Compatibility for i386. Old-timer. */
+ return compat_uatomic_cmpxchg(p, old, _new);
}
}
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