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111
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1 -- C97201D.ADA
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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 -- CHECK THAT A RENDEZVOUS REQUESTED BY A CONDITIONAL_ENTRY_CALL
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26 -- IS PERFORMED ONLY IF IMMEDIATELY POSSIBLE.
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27
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28 -- CASE D: THE BODY OF THE TASK CONTAINING THE CALLED ENTRY
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29 -- DOES NOT CONTAIN AN ACCEPT_STATEMENT FOR THAT ENTRY -
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30 -- AND THIS FACT IS DETERMINED STATICALLY.
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31
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32
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33 -- RM 4/12/82
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34
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35
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36 WITH REPORT; USE REPORT;
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37 PROCEDURE C97201D IS
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38
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39 ELSE_BRANCH_TAKEN : BOOLEAN := FALSE ;
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40
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41 BEGIN
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42
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43
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44 TEST ("C97201D", "CHECK THAT NO RENDEZVOUS REQUESTED BY" &
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45 " A CONDITIONAL_ENTRY_CALL CAN EVER OCCUR" &
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46 " IN THE ABSENCE OF A CORRESPONDING " &
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47 " ACCEPT_STATEMENT " );
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48
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49
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50 DECLARE
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51
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52
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53 TASK T IS
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54 ENTRY DO_IT_NOW_ORELSE ;
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55 ENTRY KEEP_ALIVE ;
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56 END T ;
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57
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58
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59 TASK BODY T IS
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60 BEGIN
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61
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62 -- NO ACCEPT_STATEMENT FOR THE ENTRY_CALL BEING TESTED
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63
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64 ACCEPT KEEP_ALIVE ; -- TO PREVENT THIS SERVER TASK FROM
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65 -- TERMINATING IF
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66 -- UPON ACTIVATION
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67 -- IT GETS TO RUN
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68 -- AHEAD OF THE CALLER (WHICH
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69 -- WOULD LEAD TO A SUBSEQUENT
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70 -- TASKING_ERROR AT THE TIME OF
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71 -- THE NO-WAIT CALL).
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72
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73 END ;
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74
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75
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76 BEGIN
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77
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78 SELECT
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79 T.DO_IT_NOW_ORELSE ;
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80 ELSE -- (I.E. CALLER ADOPTS A NO-WAIT POLICY)
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81 -- THEREFORE THIS BRANCH MUST BE CHOSEN
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82 ELSE_BRANCH_TAKEN := TRUE ;
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83 COMMENT( "ELSE_BRANCH TAKEN" );
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84 END SELECT;
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85
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86 T.KEEP_ALIVE ; -- THIS ALSO UPDATES THE NONLOCALS
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87
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88 END; -- END OF BLOCK CONTAINING THE ENTRY CALL
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89
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90
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91 -- BY NOW, THE TASK IS TERMINATED
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92
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93 IF ELSE_BRANCH_TAKEN THEN
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94 NULL ;
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95 ELSE
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96 FAILED( "RENDEZVOUS ATTEMPTED?" );
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97 END IF;
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98
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99 RESULT;
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100
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101
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102 END C97201D ;
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