[Boost-users] shared_ptr to this

Subject: [Boost-users] shared_ptr to this
From: Gonzalo Garramuno (ggarra13_at_[hidden])
Date: 2013-09-09 16:55:20

I have an application where I need to pass "this" in a callback 
belonging to a class to a function using a shared_ptr in another thread

In code:

struct Data
{
     Data( void* p ) :
     ptr( p )
    {
    }

     boost::shared_ptr<void> ptr;
};

void threadA( Data* d )
{
     boost::shared_ptr<void> ptr( d->ptr );
     delete d;
     // use ptr
}

class A
{
    void init_thread()
    {
      Data* data = new Data( this );
      boost.thread t( boost::bind( threadA, data ) );
    }
};

The problem is obvious.  Once threadA closes, the shared ptr is 
destroyed as its count is 0 and as it points to the this of class A this 
gets deleted too.
However my class A is still active and should not get deleted.  How can 
I work around this?