Batov, Vladimir wrote:

...

How 'bout

scoped_lock lk1(m, defer); scoped_lock lk2(m, try);

"try" is a keyword, last I checked. ;-)

[Batov, Vladimir] Oh, my goodness. Of course, it is. LOL. Looks like I have not woken up yet. Then, I guess, I am leaning towards Howard's original scoped_lock lk1(m, defer_lock); scoped_lock lk2(m, try_lock); Minor repetition issue aside, it looks like the clearest, simplest and most consistent choice.