tree 091c016d4af5ca92ec99bc9f3a95789285475cb2
parent d3786262af606083b2fefec4f075058cbfff384c
author Simone Bordet <simone.bordet@gmail.com> 1427734027 +0200
committer Simone Bordet <simone.bordet@gmail.com> 1427734027 +0200

Using test-and-test-and-set.

See http://en.wikipedia.org/wiki/Spinlock, the section about
optimizations.
See also http://en.wikipedia.org/wiki/Test_and_Test-and-set.