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111
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1 -- C974007.A
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2 --
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3 -- Grant of Unlimited Rights
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4 --
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5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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6 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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7 -- unlimited rights in the software and documentation contained herein.
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8 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
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9 -- this public release, the Government intends to confer upon all
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10 -- recipients unlimited rights equal to those held by the Government.
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11 -- These rights include rights to use, duplicate, release or disclose the
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12 -- released technical data and computer software in whole or in part, in
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13 -- any manner and for any purpose whatsoever, and to have or permit others
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14 -- to do so.
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15 --
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16 -- DISCLAIMER
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17 --
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18 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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19 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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20 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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21 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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22 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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23 -- PARTICULAR PURPOSE OF SAID MATERIAL.
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24 --*
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25 --
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26 -- OBJECTIVE:
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27 -- Check that the sequence of statements of the triggering alternative
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28 -- of an asynchronous select statement is not executed if the triggering
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29 -- statement is a protected entry call, and the entry is not accepted
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30 -- before the abortable part completes. Check that execution continues
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31 -- immediately following the asynchronous select.
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32 --
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33 -- TEST DESCRIPTION:
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34 -- Declare a main procedure containing an asynchronous select with a
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35 -- protected entry call as triggering statement. Declare a protected
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36 -- procedure which sets the protected entry's barrier true. Ensure
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37 -- that the entry call is never accepted by not calling the protected
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38 -- procedure; the barrier remains false, and the entry call from
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39 -- asynchronous select is queued. Since the abortable part will complete
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40 -- before the entry is accepted, the sequence of statements of the
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41 -- triggering alternative is never executed.
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42 --
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43 --
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44 -- CHANGE HISTORY:
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45 -- 06 Dec 94 SAIC ACVC 2.0
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46 --
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47 --!
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48
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49
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50 package C974007_0 is -- Automated teller machine abstraction.
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51
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52
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53 -- Flags for testing purposes:
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54 --
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55 Abortable_Part_Executed : Boolean := False;
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56 Perform_Transaction_Executed : Boolean := False;
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57 Triggering_Statement_Executed : Boolean := False;
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58
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59
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60 type Key_Enum is (None, Cancel, Deposit, Withdraw);
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61
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62 type Card_Number_Type is private;
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63 type Card_PIN_Type is private;
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64 type ATM_Card_Type is private;
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65
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66
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67 Transaction_Canceled : exception;
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68
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69
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70 protected type ATM_Keyboard_Protected is
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71 entry Cancel_Pressed;
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72 procedure Read_Key;
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73 private
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74 Last_Key_Pressed : Key_Enum := None;
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75 end ATM_Keyboard_Protected;
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76
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77
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78 procedure Read_Card (Card : in out ATM_Card_Type);
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79
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80 procedure Validate_Card (Card : in ATM_Card_Type);
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81
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82 procedure Perform_Transaction (Card : in ATM_Card_Type);
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83
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84 private
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85
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86 type Card_Number_Type is range 1 .. 9999;
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87 type Card_PIN_Type is range 100 .. 999;
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88
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89 type ATM_Card_Type is record
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90 Number : Card_Number_Type;
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91 PIN : Card_PIN_Type;
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92 end record;
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93
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94 end C974007_0;
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95
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96
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97 --==================================================================--
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98
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99
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100 with Report;
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101 package body C974007_0 is
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102
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103
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104 protected body ATM_Keyboard_Protected is
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105
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106 -- Barrier is false for the live of the test
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107 entry Cancel_Pressed when (Last_Key_Pressed = Cancel) is
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108 begin
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109 Triggering_Statement_Executed := true; -- Test has failed
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110 -- (Note: cannot call Report.Failed in the protected entry body]
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111 end Cancel_Pressed;
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112
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113 procedure Read_Key is -- Never
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114 begin -- called.
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115 -- Simulate a procedure which reads user keyboard input, and
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116 -- which is called by some interrupt handler.
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117 Last_Key_Pressed := Cancel;
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118 end Read_Key;
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119
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120 end ATM_Keyboard_Protected;
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121
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122
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123 procedure Read_Card (Card : in out ATM_Card_Type) is
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124 begin
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125 Card.Number := 9999;
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126 Card.PIN := 111;
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127 end Read_Card;
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128
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129
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130 procedure Validate_Card (Card : in ATM_Card_Type) is
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131 begin
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132 Abortable_Part_Executed := True;
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133 end Validate_Card;
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134
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135
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136 procedure Perform_Transaction (Card : in ATM_Card_Type) is
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137 begin
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138 Perform_Transaction_Executed := True;
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139 end Perform_Transaction;
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140
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141
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142 end C974007_0;
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143
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144
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145 --==================================================================--
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146 with Report;
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147
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148 with C974007_0; -- Automated teller machine abstraction.
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149 use C974007_0;
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150
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151 procedure C974007 is
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152
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153 Card_Data : ATM_Card_Type;
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154
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155 begin
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156
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157 Report.Test ("C974007", "ATC: trigger is protected entry call" &
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158 " and abortable part completes first");
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159
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160 Read_Card (Card_Data);
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161
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162 declare
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163 Keyboard : C974007_0.ATM_Keyboard_Protected;
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164 begin
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165
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166 -- --
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167 -- Asynchronous select is tested here --
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168 -- --
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169
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170 select
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171 Keyboard.Cancel_Pressed; -- Barrier is never set true, so
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172 -- entry call is queued and never
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173 -- accepted.
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174
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175 raise Transaction_Canceled; -- Should not be executed.
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176 then abort
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177 Validate_Card (Card_Data); -- This call completes before
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178 -- Keyboard.Cancel_Pressed can be
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179 -- accepted.
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180 end select;
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181 Perform_Transaction (Card_Data); -- Execution proceeds here after
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182 -- Validate_Card completes.
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183 exception
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184 when Transaction_Canceled =>
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185 Report.Failed ("Triggering alternative sequence of statements " &
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186 "executed");
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187 end;
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188
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189
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190 if Triggering_Statement_Executed then
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191 Report.Failed ("Triggering statement was executed");
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192 end if;
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193
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194 if not Abortable_Part_Executed then
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195 Report.Failed ("Abortable part not executed");
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196 end if;
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197
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198 if not Perform_Transaction_Executed then
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199 Report.Failed ("Statements following asynchronous select not " &
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200 "executed");
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201 end if;
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202
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203 Report.Result;
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204
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205 end C974007;
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