tree 9cb6876767f9f531d252fe05a5fe6148dbc4920a
parent 5f2e2f999e8170e103a7516fefeee3ceba1f7877
author Menghan Li <menghanl@google.com> 1510609411 -0800
committer GitHub <noreply@github.com> 1510609411 -0800
gpgsig -----BEGIN PGP SIGNATURE-----
 
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 +VOHT/Oq5I7WaFgQh6gcJwZxpYEGDWqrxc4RJhwL9BPDz+uoyd19y6sLO2J0DRJ3
 aGMTTpBr94mSxf9mt/EFGyx3vz6uD1GcJxwcKSYFT2AFNm4Av1eGxbCJAG9CuDFq
 3BJynFrTtgdCoFpb0Fn/Ca2PIqux/APV0zP7FH8gsNN+VXP0YO0/xK3uD8Ujth0r
 IFJ4IfEq0E3x9GYmkgoYoEp8N9nbp1DbHeakcdi5JqMGrsTUgrO1casuWX4tA/7P
 HugUXUgqHk4hQT+cKbysR5vDfhQ2OQFM7IrQQKyhGr6L4kteOXPP8tsBb5E3BJQ=
 =YYKl
 -----END PGP SIGNATURE-----
 

Eliminate race on ac.acbw (#1666)

Guard ac.acbw with mutex