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(parent: 15ba057) | patch
ovs-atomic: Fix GCC4+ atomic_flag.
authorJarno Rajahalme <jrajahalme@nicira.com>
Tue, 5 Aug 2014 20:51:19 +0000 (13:51 -0700)
committerJarno Rajahalme <jrajahalme@nicira.com>
Tue, 5 Aug 2014 20:51:19 +0000 (13:51 -0700)
commit91645580722ca44f1617bd3d343f054fc7b4967b
tree663399cb2ec45630828cb45fb77c7f97d3cab9a3tree | snapshot
parent15ba057e0511bbe947373f5fa17e666431941e04commit | diff
ovs-atomic: Fix GCC4+ atomic_flag.

The default memory order for atomic_flag is documented to be
memory_order_seq_cst (as in C11), but the GCC4+ implementation only
used the GCC builtins, which provide acquire and release semantics
only.  Additional barriers are needed for in other cases.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
lib/ovs-atomic-gcc4+.h diff | blob | history
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