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With this implementation I get warnings with Clang on GNU/Linux when the
previous patch is not applied. This ought to make it easier to avoid
introducing new problems in the future even without building on FreeBSD.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
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Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ed Maste <emaste@freebsd.org>
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We found out earlier that GCC sometimes produces an error only at link time
for atomic built-ins that are not supported on a platform. This actually
tries the link at configure time and should thus reliably detect whether
the atomic built-ins are really supported.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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This library should prove useful for the threading changes coming up.
The following commit introduces one (very simple) user.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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