Re: [Boost-users] Fwd: boost::unique_lock throw a exception

I use boost1.52 on windows2003sp2, boost::unique_lock throw a exception, please help me.

stack is: RaiseException _CxxThrowException boost::throw_exception<boost::lock_error>[e:\library\boost_1_52\boost\throw_exception.hpp：67] boost::shared_mutex::timed_lock[e:\library\boost_1_52\boost\thread\win32\shared_mutex.hpp：430] boost::shared_mutex::lock[e:\library\boost_1_52\boost\thread\win32\shared_mutex.hpp：382] boost::unique_lock<boost::shared_mutex>::lock[e:\library\boost_1_52\boost\thread\locks.hpp：510]

Do you lock or unlock the mutex twice?