-- FDB0A00.A -- -- Grant of Unlimited Rights -- -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained -- unlimited rights in the software and documentation contained herein. -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making -- this public release, the Government intends to confer upon all -- recipients unlimited rights equal to those held by the Government. -- These rights include rights to use, duplicate, release or disclose the -- released technical data and computer software in whole or in part, in -- any manner and for any purpose whatsoever, and to have or permit others -- to do so. -- -- DISCLAIMER -- -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A -- PARTICULAR PURPOSE OF SAID MATERIAL. --* -- -- FOUNDATION DESCRIPTION: -- This foundation provides the basis for testing package -- System.Storage_Pools. It provides simple implementations of -- Allocate and Deallocate that have the side effect of calling -- TCTouch.Touch when they are called. -- -- CHANGE HISTORY: -- 02 JUN 95 SAIC Initial version -- 05 APR 96 SAIC Fixed header for 2.1 -- 02 JUL 98 EDS Swapped Pool.Avail change with overflow check --! ---------------------------------------------------------------- FDB0A00 with Report; with System.Storage_Pools; with System.Storage_Elements; package FDB0A00 is type Stack_Heap( Water_Line: System.Storage_Elements.Storage_Count ) is new System.Storage_Pools.Root_Storage_Pool with private; procedure Allocate( Pool : in out Stack_Heap; Storage_Address : out System.Address; Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count; Alignment : in System.Storage_Elements.Storage_Count); procedure Deallocate( Pool : in out Stack_Heap; Storage_Address : in System.Address; Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count; Alignment : in System.Storage_Elements.Storage_Count); function Storage_Size( Pool: in Stack_Heap ) return System.Storage_Elements.Storage_Count; function TC_Largest_Request return System.Storage_Elements.Storage_Count; Pool_Overflow : exception; private type Data_Array is array(System.Storage_Elements.Storage_Count range <>) of System.Storage_Elements.Storage_Element; type Stack_Heap( Water_Line: System.Storage_Elements.Storage_Count ) is new System.Storage_Pools.Root_Storage_Pool with record Data : Data_Array(1..Water_Line); Avail : System.Storage_Elements.Storage_Count := 1; end record; end FDB0A00; -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- with TCTouch; package body FDB0A00 is Largest_Request_On_Record : System.Storage_Elements.Storage_Count := 0; procedure Allocate( Pool : in out Stack_Heap; Storage_Address : out System.Address; Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count; Alignment : in System.Storage_Elements.Storage_Count) is use type System.Storage_Elements.Storage_Offset; begin TCTouch.Touch('A'); --------------------------------------------------- A -- set the pointer to the next correctly aligned available address Pool.Avail := Pool.Avail + (Alignment - (Pool.Data(Pool.Avail)'Address mod Alignment)); -- check for overflow if Pool.Avail + Size_In_Storage_Elements > Pool.Water_Line then raise Pool_Overflow; end if; -- set the resulting address to that address Storage_Address := Pool.Data(Pool.Avail)'Address; -- update the housekeeping Pool.Avail := Pool.Avail + Size_In_Storage_Elements; Largest_Request_On_Record := System.Storage_Elements.Storage_Count'Max(Largest_Request_On_Record, Size_In_Storage_Elements); exception when Constraint_Error => raise Pool_Overflow; -- in case I missed an edge end Allocate; procedure Deallocate( Pool : in out Stack_Heap; Storage_Address : in System.Address; Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count; Alignment : in System.Storage_Elements.Storage_Count) is begin TCTouch.Touch('D'); --------------------------------------------------- D -- for the purposes of validation, the simplest possible implementation -- of Deallocate is shown below: null; end Deallocate; function Storage_Size( Pool: in Stack_Heap ) return System.Storage_Elements.Storage_Count is begin TCTouch.Touch('S'); --------------------------------------------------- S return Pool.Water_Line; end Storage_Size; function TC_Largest_Request return System.Storage_Elements.Storage_Count is begin return Largest_Request_On_Record; end TC_Largest_Request; end FDB0A00;