Fair enough; I had used it mostly because I wanted to ensure fairness conditions on some locked code.

That's interesting, I'll rewrite the tests with vanilla threads and update the page!

ETA:

Ok, I updated the tests to use vanilla platform threads, and surprisingly ReentrantLock is still faster. Here are the results:

    Total time for synchronized: 202ms, counter: 2000000
    Total time for atomic: 27ms, counter: 2000000
    Total time for lock: 58ms, counter: 2000000