BOOST_OPENMETHOD_DEFAULT_REGISTRY

Default value for Registry

Synopsis

Defined in <boost/openmethod/core.hpp>

#define BOOST_OPENMETHOD_DEFAULT_REGISTRY ::boost::openmethod::default_registry

Description

The name of the default registry.

BOOST_OPENMETHOD_DEFAULT_REGISTRY is the default value for the Registry template parameter of method, use_classes, virtual_ptr, and all the constructs that take a registry as a template argument.

BOOST_OPENMETHOD_DEFAULT_REGISTRY can be defined by a program to change the default registry globally, before including <boost/openmethod/core.hpp>. After that, changing its value has no effect, even on other macros.

To override the default registry, proceed as follows:

  1. Define a registry class, either from scratch, or by tuning an existing registry. Include <boost/openmethod/preamble.hpp>, <boost/openmethod/default_registry.hpp>, and headers under boost/openmethod/policies as needed.

  2. Set BOOST_OPENMETHOD_DEFAULT_REGISTRY to the new registry class.

  3. Include <boost/openmethod/core.hpp>.

    NOTE

    Use this feature with caution, as it will cause ODR violations if different translation units define different default registries.

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