DEFINITION MODULE RTentity ;

(*
    Description: provides a set of routines for maintaining an
                 efficient mechanism to group opaque (or pointer)
                 data structures together.  Internally the
                 entities are grouped together using a binary
                 tree.  It does not use Storage - and instead
                 uses malloc, free from libc as Storage uses the
                 module to detect erroneous deallocations.
*)

IMPORT SYSTEM ;

TYPE
   Group ;


PROCEDURE InitGroup () : Group ;
PROCEDURE KillGroup (g: Group) : Group ;
PROCEDURE GetKey (g: Group; a: SYSTEM.ADDRESS) : CARDINAL ;
PROCEDURE PutKey (g: Group; a: SYSTEM.ADDRESS; key: CARDINAL) ;
PROCEDURE DelKey (g: Group; a: SYSTEM.ADDRESS) ;
PROCEDURE IsIn (g: Group; a: SYSTEM.ADDRESS) : BOOLEAN ;


END RTentity.