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compat: use __atomic operations instead of __sync, when present

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Fixes #434
Fixes #437
This commit is contained in:
Alessandro Ghedini
2013-12-31 10:53:36 +01:00
committed by Stefano Pigozzi
parent e19060d89f
commit 4530d787d0
1 changed files with 9 additions and 2 deletions
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compat/atomics.h
+9 -2
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@@ -19,5 +19,12 @@
// At this point both gcc and clang had __sync_synchronize support for some
// time. We only support a full memory barrier.
#define mp_memory_barrier() __sync_synchronize()
#define mp_atomic_add_and_fetch(a, b) __sync_add_and_fetch(a, b)
#include "config.h"
#if HAVE_ATOMIC_BUILTINS
# define mp_memory_barrier() __atomic_thread_fence(__ATOMIC_SEQ_CST)
# define mp_atomic_add_and_fetch(a, b) __atomic_add_fetch(a, b,__ATOMIC_SEQ_CST)
#else
# define mp_memory_barrier() __sync_synchronize()
# define mp_atomic_add_and_fetch(a, b) __sync_add_and_fetch(a, b)
#endif