Revision as of 17:32, 16 March 2008 edit Damian Yerrick (talk \| contribs) Autopatrolled, Extended confirmed users, Pending changes reviewers 15,101 edits m skip redirect ← Previous edit		Revision as of 18:13, 24 May 2008 edit undo Zoonfafer (talk \| contribs) 55 edits m grammar : its -> it's Next edit →
Line 17: } The entry protocol uses normal memory reads to spin, waiting for the lock to become free. Test-and-set is only used to try to get the lock when normal memory read says ~~its~~it's free. Thus the expensive atomic memory operations happens less often than in simple spin around test-and-set. If the [[programming language]] used supports [[short-circuit evaluation]], the entry protocol could be implemented as:

Test and test-and-set: Difference between revisions