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1 -- C940016.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 -- TEST OBJECTIVE:
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27 -- Check that an Unchecked_Deallocation of a protected object
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28 -- performs the required finalization on the protected object.
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29 --
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30 -- TEST DESCRIPTION:
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31 -- Test that finalization takes place when an Unchecked_Deallocation
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32 -- deallocates a protected object with queued callers.
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33 -- Try protected objects that have no other finalization code and
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34 -- protected objects with user defined finalization.
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35 --
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36 --
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37 -- CHANGE HISTORY:
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38 -- 16 Jan 96 SAIC ACVC 2.1
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39 -- 10 Jul 96 SAIC Fixed race condition noted by reviewers.
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40 --
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41 --!
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42
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43
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44 with Ada.Finalization;
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45 package C940016_0 is
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46 Verbose : constant Boolean := False;
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47 Finalization_Occurred : Boolean := False;
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48
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49 type Has_Finalization is new Ada.Finalization.Limited_Controlled with
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50 record
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51 Placeholder : Integer;
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52 end record;
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53 procedure Finalize (Object : in out Has_Finalization);
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54 end C940016_0;
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55
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56
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57 with Report;
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58 with ImpDef;
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59 package body C940016_0 is
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60 procedure Finalize (Object : in out Has_Finalization) is
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61 begin
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62 delay ImpDef.Clear_Ready_Queue;
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63 Finalization_Occurred := True;
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64 if Verbose then
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65 Report.Comment ("in Finalize");
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66 end if;
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67 end Finalize;
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68 end C940016_0;
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69
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70
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71
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72 with Report;
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73 with Ada.Finalization;
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74 with C940016_0;
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75 with Ada.Unchecked_Deallocation;
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76 with ImpDef;
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77
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78 procedure C940016 is
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79 Verbose : constant Boolean := C940016_0.Verbose;
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80
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81 begin
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82
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83 Report.Test ("C940016", "Check that Unchecked_Deallocation of a" &
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84 " protected object finalizes the" &
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85 " protected object");
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86
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87 First_Check: declare
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88 protected type Semaphore is
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89 entry Wait;
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90 procedure Signal;
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91 private
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92 Count : Integer := 0;
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93 end Semaphore;
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94 protected body Semaphore is
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95 entry Wait when Count > 0 is
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96 begin
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97 Count := Count - 1;
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98 end Wait;
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99
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100 procedure Signal is
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101 begin
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102 Count := Count + 1;
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103 end Signal;
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104 end Semaphore;
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105
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106 type pSem is access Semaphore;
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107 procedure Zap_Semaphore is new
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108 Ada.Unchecked_Deallocation (Semaphore, pSem);
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109 Sem_Ptr : pSem := new Semaphore;
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110
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111 -- positive confirmation that Blocker got the exception
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112 Ok : Boolean := False;
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113
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114 task Blocker;
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115
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116 task body Blocker is
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117 begin
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118 Sem_Ptr.Wait;
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119 Report.Failed ("Program_Error not raised in waiting task");
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120 exception
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121 when Program_Error =>
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122 Ok := True;
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123 if Verbose then
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124 Report.Comment ("Blocker received Program_Error");
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125 end if;
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126 when others =>
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127 Report.Failed ("Wrong exception in Blocker");
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128 end Blocker;
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129
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130 begin -- First_Check
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131 -- wait for Blocker to get blocked on the semaphore
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132 delay ImpDef.Clear_Ready_Queue;
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133 Zap_Semaphore (Sem_Ptr);
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134 -- make sure Blocker has time to complete
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135 delay ImpDef.Clear_Ready_Queue * 2;
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136 if not Ok then
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137 Report.Failed ("finalization not properly performed");
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138 -- Blocker is probably hung so kill it
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139 abort Blocker;
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140 end if;
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141 end First_Check;
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142
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143
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144 Second_Check : declare
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145 -- here we want to check that the raising of Program_Error
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146 -- occurs before the other finalization actions.
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147 protected type Semaphore is
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148 entry Wait;
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149 procedure Signal;
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150 private
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151 Count : Integer := 0;
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152 Component : C940016_0.Has_Finalization;
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153 end Semaphore;
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154 protected body Semaphore is
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155 entry Wait when Count > 0 is
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156 begin
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157 Count := Count - 1;
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158 end Wait;
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159
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160 procedure Signal is
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161 begin
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162 Count := Count + 1;
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163 end Signal;
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164 end Semaphore;
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165
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166 type pSem is access Semaphore;
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167 procedure Zap_Semaphore is new
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168 Ada.Unchecked_Deallocation (Semaphore, pSem);
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169 Sem_Ptr : pSem := new Semaphore;
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170
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171 -- positive confirmation that Blocker got the exception
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172 Ok : Boolean := False;
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173
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174 task Blocker;
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175
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176 task body Blocker is
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177 begin
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178 Sem_Ptr.Wait;
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179 Report.Failed ("Program_Error not raised in waiting task 2");
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180 exception
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181 when Program_Error =>
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182 Ok := True;
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183 if C940016_0.Finalization_Occurred then
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184 Report.Failed ("wrong order for finalization 2");
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185 elsif Verbose then
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186 Report.Comment ("Blocker received Program_Error 2");
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187 end if;
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188 when others =>
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189 Report.Failed ("Wrong exception in Blocker 2");
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190 end Blocker;
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191
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192 begin -- Second_Check
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193 -- wait for Blocker to get blocked on the semaphore
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194 delay ImpDef.Clear_Ready_Queue;
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195 Zap_Semaphore (Sem_Ptr);
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196 -- make sure Blocker has time to complete
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197 delay ImpDef.Clear_Ready_Queue * 2;
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198 if not Ok then
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199 Report.Failed ("finalization not properly performed 2");
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200 -- Blocker is probably hung so kill it
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201 abort Blocker;
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202 end if;
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203 if not C940016_0.Finalization_Occurred then
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204 Report.Failed ("user defined finalization didn't happen");
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205 end if;
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206 end Second_Check;
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207
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208
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209 Report.Result;
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210
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211 end C940016;
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