Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a development version of boost.

Struct template capacity

boost::lockfree::capacity

// In header: <boost/lockfree/policies.hpp>

template<size_t Size> 
struct capacity {
};

Sets the capacity of a data structure at compile-time.

This implies that a data structure is bounded and fixed-sized.