Is there any plan to implement something like this: http://www.neuromancy.net/fisheye/browse/mantra/trunk/Mantra-I/mantra/ utils/shared_mutex_views.h?r=435 So that a shared mutex can be operated like a normal mutex, including scoped_lock behavior, and you can choose whether that scoped_lock behavior should be to acquire an exclusive, a shared, or an upgrade lock? The idea being: // somewhere else shared_mutex smtx; // Where I need it: shared_mutex_view smv(smtx); shared_mutex_view::scoped_lock sl(smv); // ... // OR: exclusive_mutex_view smv(smtx); exclusive_mutex_view::scoped_lock sl(smv); Right now, shared_mutex only has primitives, and cannot be used with things like scoped_lock (aka. unique_lock). Additionally, it cannot be used as a condition, despite the condition framework. These views would facilitate that, however I'll admit, I've not thought of all the implications of such things. PreZ :)