[Boost-users] [Interprocess] interprocess_upgradable_mutex and recursivity

Hello, is there a specific raison why the interprocess_upgradable_mutex is non-recursive ? I need the "Sharable lock" functionality of these mutexes but non-recursivity is a big problem for my usage. Is there a solution to have both "sharability" and "recursivity" in an shared memory storable mutex ? Thanks for your help, Gaëtan