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Diffstat (limited to '3rdParty/Boost/src/boost/memory_order.hpp')
-rw-r--r--3rdParty/Boost/src/boost/memory_order.hpp14
1 files changed, 9 insertions, 5 deletions
diff --git a/3rdParty/Boost/src/boost/memory_order.hpp b/3rdParty/Boost/src/boost/memory_order.hpp
index 4945af6..fbe9034 100644
--- a/3rdParty/Boost/src/boost/memory_order.hpp
+++ b/3rdParty/Boost/src/boost/memory_order.hpp
@@ -37,15 +37,19 @@ namespace boost
//
// if( mo & ( memory_order_acquire | memory_order_consume ) ) { ...fence... }
//
+// The values are also in the order of increasing "strength"
+// of the fences so that success/failure orders can be checked
+// efficiently in compare_exchange methods.
+//
enum memory_order
{
memory_order_relaxed = 0,
- memory_order_acquire = 1,
- memory_order_release = 2,
- memory_order_acq_rel = 3, // acquire | release
- memory_order_seq_cst = 7, // acq_rel | 4
- memory_order_consume = 8
+ memory_order_consume = 1,
+ memory_order_acquire = 2,
+ memory_order_release = 4,
+ memory_order_acq_rel = 6, // acquire | release
+ memory_order_seq_cst = 14 // acq_rel | 8
};
} // namespace boost