Re: [Boost-users] [interprocess] managed_shm->find call causes assertion

8 Apr 2010

      Hi again,

the problem seems to be that I work with templates. I wrote a method 
that looks like this:

template <typename ObjectType> ObjectType * get_object_pointer() const
{
std::pair p = _managed_shm->find<ObjectType>( 
ipc::unique_instance );
return p.first;
}

If I remove the template and add a type the assert will not appear.

I am confused ...

Moritz wrote:
...
Hi,
posted the wrong line number. Should be 107:
inline void interprocess_recursive_mutex::unlock()
{
   int res = 0;
   res = pthread_mutex_unlock(&m_mut);
   assert(res == 0); // <- HERE!
}
Moritz wrote:
...
Hi,
I have a managed_shared_memory segment which contains a 
unique_instance of an object. When I try to call
        managed_shm->find<ObjectType>( ipc::unique_instance );
I get the following assertion:
/usr/include/boost/interprocess/sync/posix/interprocess_recursive_mutex.hpp:110: 
void boost::interprocess::interprocess_recursive_mutex::unlock(): 
Assertion `res == 0' failed.
Aborted
This only happens in Release-Mode (with gcc -s -O2). I am not able to 
build a minimum example but I also can not track the problem. Any 
suggests?
Kind regards