[ovs-git] Open vSwitch: test-atomic: Re-enable atomic read-write-modify tests. (master)

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commit 6ba7f5cccd68b2f014c5a6b71cbc39e045a3d14d
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=6ba7f5cccd68b2f014c5a6b71cbc39e045a3d14d
Author: Ben Pfaff <blp at nicira.com>
		
test-atomic: Re-enable atomic read-write-modify tests.
		
This reverts commit 05d299e0ccca80736cd4438c3224540c5448a7d4 (test-atomic:
Drop atomic read-modify-write tests for the moment.) because the
test for detecting whether GCC support atomic operation built-ins has
been fixed.

Signed-off-by: Ben Pfaff <blp at nicira.com>
Acked-by: Ethan Jackson <ethan at nicira.com>


commit 15248032ea9e3e88849310e8f2cef9db618fce1a
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=15248032ea9e3e88849310e8f2cef9db618fce1a
Author: Ben Pfaff <blp at nicira.com>
		
configure: Add configure-time check for GCC 4.0+ atomic built-ins.
		
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 at nicira.com>
Acked-by: Ethan Jackson <ethan at nicira.com>


-----------------------------------------------------------------------

Summary of changes:
 configure.ac        |    1 +
 lib/ovs-atomic.h    |    2 +-
 m4/openvswitch.m4   |   72 +++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/test-atomic.c |   27 ++++++++++++++++++-
 4 files changed, 100 insertions(+), 2 deletions(-)


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