1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
-- 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;
|
