(* Storage.def provides access to the dynamic Storage handler. Copyright (C) 2001-2023 Free Software Foundation, Inc. Contributed by Gaius Mulley . This file is part of GNU Modula-2. GNU Modula-2 is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GNU Modula-2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see . *) DEFINITION MODULE Storage ; FROM SYSTEM IMPORT ADDRESS ; EXPORT QUALIFIED ALLOCATE, DEALLOCATE, REALLOCATE, Available ; (* ALLOCATE - attempt to allocate memory from the heap. NIL is returned in, a, if ALLOCATE fails. *) PROCEDURE ALLOCATE (VAR a: ADDRESS ; Size: CARDINAL) ; (* DEALLOCATE - return, Size, bytes to the heap. The variable, a, is set to NIL. *) PROCEDURE DEALLOCATE (VAR a: ADDRESS ; Size: CARDINAL) ; (* REALLOCATE - attempts to reallocate storage. The address, a, should either be NIL in which case ALLOCATE is called, or alternatively it should have already been initialized by ALLOCATE. The allocated storage is resized accordingly. *) PROCEDURE REALLOCATE (VAR a: ADDRESS; Size: CARDINAL) ; (* Available - returns TRUE if, Size, bytes can be allocated. *) PROCEDURE Available (Size: CARDINAL) : BOOLEAN ; END Storage.