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Modula Definition | 1987-06-27 | 819 b | 32 lines |
- DEFINITION MODULE Storage;
-
- (* (C) Copyright 1987 Fitted Software Tools. All rights reserved. *)
-
- (*
- This module manages the Modula-2 heap which is defined to be all
- the memory between System.HeapTop and System.MemTop.
- The Storage procedures will keep System.HeapTop up to date as
- the heap expands or shrinks.
- *)
-
- FROM SYSTEM IMPORT ADDRESS;
-
-
- PROCEDURE ALLOCATE( VAR a :ADDRESS; size :CARDINAL );
- (*
- allocates size bytes in the heap and returns a pointer to
- that memory block in a.
- *)
-
- PROCEDURE DEALLOCATE( VAR a :ADDRESS; size :CARDINAL );
- (*
- returns a previously allocated memory block of size size
- to the heap.
- *)
-
- PROCEDURE Available( size :CARDINAL ) :BOOLEAN;
- (*
- TRUE if a memory block of size size is available for allocation
- *)
-
- END Storage.