每次升压scoped_lock失败

Question

In a class, I want to use a mutex over a function like this

void Agent::notify(Packet& packet, Peer peer) {
    boost::mutex::scoped_lock lock(mutex_);
    ...
}

No problem at the compilation process. But when I execute the program, boost always fail at this line saying :

terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::lock_error> >'
  what():  boost: mutex lock failed in pthread_mutex_lock: Invalid argument
Abandon (core dumped)

I try to use lock() or unlock methods, but the same problem. When I use try_lock it doesn't failed by the condition is always false.

Searching on internet I found this https://svn.boost.org/trac/boost/ticket/9307 .

But I think the problem is my program but I don't see where. In my tests there is only one thread that go in this function.

Answer 1

The problem is that in the program the threads that use the mutex need to be at the same level . Yet the thread that created this error was the main thread. Not a created one.