[Boost-users] [interprocess] Unmap resource of the object constructed from managed_mapped_file

Hi, I have a managed_mapped_file and use it to dynamically construct lots of interprocess::vector objects(all the objects and elements are resided in the mapped file). Now I'm looking for a way to keep the run-time memory consumption below a certain amount. Is it possible to unmap the resource of the vector object? Although all the resources would be freed when the managed_mapped_file is destroyed, but the cost of highly frequently mapping/un-mapping seems too expensive for my purpose. Is there any way to workaround this? Any suggestion is welcome. Thanks in advance. Regards, Ryan