[Boost-users] mix usage of boost.thread and pthread?

Hi all, Is it OK to use both pthread and boost.thread in the same program under linux? E.g., there are two cases: 1. use pthread api to create/join/detach/cancel threads but use boost.thread's mutex/condition_variable etc. to do thread synchronization, and this_thread/sleep/get_id/thread_local_storage etc.. 2. use boost.thread api to create/join/detach/interrupt thread but use pthread api to do thread synchronization. I know boost.thread is a pthread api wrapper under linux, but I'm afraid of that the two cases above aren't safe if boost.thread uses some tricks I don't understand. Would you kindly give any hints? Thanks! Hua