The following are the classes provided with the C++ MPI-1 language bindings:
namespace MPI { class Comm {...}; class Intracomm : public Comm {...}; class Graphcomm : public Intracomm {...}; class Cartcomm : public Intracomm {...}; class Intercomm : public Comm {...}; class Datatype {...}; class Errhandler {...}; class Exception {...}; class Group {...}; class Op {...}; class Request {...}; class Prequest : public Request {...}; class Status {...}; };
Note that several MPI-1 functions, constants, and typedefs have been deprecated and therefore do not have corresponding C++ bindings. All deprecated names have corresponding new names in MPI-2 (albeit probably with different semantics). See the table in Section Deprecated Names and Functions for a list of the deprecated names and their corresponding new names. The bindings for the new names are listed in Annex Language Binding .