[Boost-users] boost interprocess: managed_shared_memory overhead

Hello again, I have one managed_shared_memory, which contains exactly one instance of a certain structure, allocated via MySegment.find_or_construct<TheClass>(interprocess::unique_instance)(...); How can I determine how big the segment must be? interprocess::managed_shared_memory ConfigurationManagerSegment(interprocess::open_or_create, "sharedMem", sizeof(TheClass)+x); //What should be x? Thank you