|
111
|
1 -- C940011.A
|
|
|
2 --
|
|
|
3 -- Grant of Unlimited Rights
|
|
|
4 --
|
|
|
5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
|
|
|
6 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
|
|
|
7 -- unlimited rights in the software and documentation contained herein.
|
|
|
8 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
|
|
|
9 -- this public release, the Government intends to confer upon all
|
|
|
10 -- recipients unlimited rights equal to those held by the Government.
|
|
|
11 -- These rights include rights to use, duplicate, release or disclose the
|
|
|
12 -- released technical data and computer software in whole or in part, in
|
|
|
13 -- any manner and for any purpose whatsoever, and to have or permit others
|
|
|
14 -- to do so.
|
|
|
15 --
|
|
|
16 -- DISCLAIMER
|
|
|
17 --
|
|
|
18 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
|
|
|
19 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
|
|
|
20 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
|
|
|
21 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
|
|
|
22 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
|
|
|
23 -- PARTICULAR PURPOSE OF SAID MATERIAL.
|
|
|
24 --*
|
|
|
25 --
|
|
|
26 -- OBJECTIVE:
|
|
|
27 -- Check that, in the body of a protected object created by the execution
|
|
|
28 -- of an allocator, external calls to other protected objects via
|
|
|
29 -- the access type are correctly performed
|
|
|
30 --
|
|
|
31 -- TEST DESCRIPTION:
|
|
|
32 -- Use a subset of the simulation of the freeway on-ramp described in
|
|
|
33 -- c940005. In this case an array of access types is built with pointers
|
|
|
34 -- to successive ramps. The external calls within the protected
|
|
|
35 -- objects are made via the index into the array. Routines which refer
|
|
|
36 -- to the "previous" ramp and the "next" ramp are exercised. (Note: The
|
|
|
37 -- first and last ramps are assumed to be dummies and no first/last
|
|
|
38 -- condition code is included)
|
|
|
39 --
|
|
|
40 --
|
|
|
41 -- CHANGE HISTORY:
|
|
|
42 -- 06 Dec 94 SAIC ACVC 2.0
|
|
|
43 --
|
|
|
44 --!
|
|
|
45
|
|
|
46
|
|
|
47 with Report;
|
|
|
48
|
|
|
49
|
|
|
50 procedure C940011 is
|
|
|
51
|
|
|
52 type Ramp;
|
|
|
53 type acc_Ramp is access Ramp;
|
|
|
54
|
|
|
55 subtype Ramp_Index is integer range 1..4;
|
|
|
56
|
|
|
57
|
|
|
58 -- Weighted load given to each potential problem area and accumulated
|
|
|
59 type Load_Factor is range 0..8;
|
|
|
60 Clear_Level : constant Load_Factor := 0;
|
|
|
61 Moderate_Level : constant Load_Factor := 3;
|
|
|
62
|
|
|
63 --================================================================
|
|
|
64 -- Only the Routines that are used in this test are shown
|
|
|
65 --
|
|
|
66 protected type Ramp is
|
|
|
67
|
|
|
68 procedure Set_Index (Index : Ramp_Index);
|
|
|
69 procedure Set_Local_Overload (Sensor_Level : Load_Factor);
|
|
|
70 function Local_Overload return Load_Factor;
|
|
|
71 procedure Notify;
|
|
|
72 function Next_Ramp_Overload return Load_Factor;
|
|
|
73
|
|
|
74 private
|
|
|
75
|
|
|
76 This_Ramp : Ramp_Index;
|
|
|
77
|
|
|
78 Next_Ramp_Alert : Boolean := false; -- Next Ramp is in trouble?
|
|
|
79
|
|
|
80 -- Current state of the various Sample Points
|
|
|
81 Local_State : Load_Factor := Clear_Level;
|
|
|
82
|
|
|
83 end Ramp;
|
|
|
84 --================================================================
|
|
|
85
|
|
|
86 -- Build a set of Ramp objects and an array of pointers to them
|
|
|
87 --
|
|
|
88 Ramp_Array : array (Ramp_Index) of acc_Ramp := (Ramp_Index => new Ramp);
|
|
|
89
|
|
|
90 --================================================================
|
|
|
91 protected body Ramp is
|
|
|
92
|
|
|
93 procedure Set_Index (Index : Ramp_Index) is
|
|
|
94 begin
|
|
|
95 This_Ramp := Index;
|
|
|
96 end Set_Index;
|
|
|
97
|
|
|
98 -- These Set/Clear routines are triggered by real-time sensors that
|
|
|
99 -- reflect traffic state
|
|
|
100 procedure Set_Local_Overload(Sensor_Level : Load_Factor) is
|
|
|
101 begin
|
|
|
102 if Local_State = Clear_Level then
|
|
|
103 -- Notify "previous" ramp to check this one for current state.
|
|
|
104 -- Subsequent changes in state will not send an alert
|
|
|
105 -- When the situation clears another routine performs the
|
|
|
106 -- all_clear notification. (not shown)
|
|
|
107 -- EXTERNAL CALL OF PROCEDURE FROM PROCEDURE
|
|
|
108 Ramp_Array(This_Ramp - 1).Notify; -- index to previous ramp
|
|
|
109 end if;
|
|
|
110 Local_State := Sensor_Level;
|
|
|
111 null; --::::: Start local meter if not already started
|
|
|
112 end Set_Local_Overload;
|
|
|
113
|
|
|
114 function Local_Overload return Load_Factor is
|
|
|
115 begin
|
|
|
116 return Local_State;
|
|
|
117 end Local_Overload;
|
|
|
118
|
|
|
119 -- This is notification from the next ramp that it is in
|
|
|
120 -- overload. With this provision we only need to sample the next
|
|
|
121 -- ramp during adverse conditions.
|
|
|
122 procedure Notify is
|
|
|
123 begin
|
|
|
124 Next_Ramp_Alert := true;
|
|
|
125 end Notify;
|
|
|
126
|
|
|
127 function Next_Ramp_Overload return Load_Factor is
|
|
|
128 begin
|
|
|
129 if Next_Ramp_Alert then
|
|
|
130 -- EXTERNAL FUNCTION CALL FROM FUNCTION
|
|
|
131 -- Get next ramp's current state
|
|
|
132 return Ramp_Array(This_Ramp + 1).Local_Overload;
|
|
|
133 else
|
|
|
134 return Clear_Level;
|
|
|
135 end if;
|
|
|
136 end Next_Ramp_Overload;
|
|
|
137 end Ramp;
|
|
|
138
|
|
|
139 --================================================================
|
|
|
140
|
|
|
141
|
|
|
142 begin
|
|
|
143
|
|
|
144
|
|
|
145 Report.Test ("C940011", "Protected Objects created by allocators: " &
|
|
|
146 "external calls via access types");
|
|
|
147
|
|
|
148 -- Initialize each Ramp
|
|
|
149 for i in Ramp_Index loop
|
|
|
150 Ramp_Array(i).Set_Index (i);
|
|
|
151 end loop;
|
|
|
152
|
|
|
153 -- Test driver. This is ALL test control code
|
|
|
154
|
|
|
155 -- Simulate calls to the protected functions and procedures
|
|
|
156 -- external calls. (do not call the "dummy" end ramps)
|
|
|
157
|
|
|
158 -- Simple Call
|
|
|
159 if Ramp_Array(2).Next_Ramp_Overload /= Clear_level then
|
|
|
160 Report.Failed ("Primary call incorrect");
|
|
|
161 end if;
|
|
|
162
|
|
|
163 -- Call which results in an external procedure call via the array
|
|
|
164 -- index from within the protected object
|
|
|
165 Ramp_Array(3).Set_Local_Overload (Moderate_Level);
|
|
|
166
|
|
|
167 -- Call which results in an external function call via the array
|
|
|
168 -- index from within the protected object
|
|
|
169 if Ramp_Array(2).Next_Ramp_Overload /= Moderate_level then
|
|
|
170 Report.Failed ("Secondary call incorrect");
|
|
|
171 end if;
|
|
|
172
|
|
|
173 Report.Result;
|
|
|
174
|
|
|
175 end C940011;
|
