Re: [Boost-users] Possibly too newbie a question?

Eric Whitcombe wrote:

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I am stepping through interprocess shared memory code and I was a little confused by the offset_ptr code that I was hitting*. I cannot figure out how that is specified to the template of rbtree_best_fit. I see in boost/interprocess/interprocess_fwd.hpp the declaration of managed_shared_memory by typedef'ing basic_managed_shared_memory with rbtree_best_fit as the AllocationAlgorithm argument but I can't figure out how offset_ptr is is supplied as the VoidPointer >>> argument to the rbtree_best_fit template. That template has 3 arguments but the forward declaration only provides one. Are the other two somehow inferred? If so, how?

rbtree_best_fit works because rbtree_best_fit class template's declaration specifies default arguments for VoidMutex and MemAlignment template parameters, shown here: template class rbtree_best_fit; So rbtree_best_fit is equivalent to rbtree_best_fit Does that answer your question, or have I misunderstood it? HTH, Gevorg