1-- C97201E.ADA 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-- CHECK THAT A RENDEZVOUS REQUESTED BY A CONDITIONAL_ENTRY_CALL 26-- IS PERFORMED ONLY IF IMMEDIATELY POSSIBLE. 27 28-- CASE E: THE BODY OF THE TASK CONTAINING THE CALLED ENTRY 29-- DOES NOT CONTAIN AN ACCEPT_STATEMENT FOR THAT ENTRY - 30-- AND THIS FACT CAN NOT BE DETERMINED STATICALLY. 31-- (THE ENTRY BELONGS TO AN ENTRY FAMILY; SOME FAMILY MEMBERS 32-- ARE "ACCEPTABLE", BUT NOT THE CALLED ONE.) 33 34 35-- RM 4/13/82 36 37 38WITH REPORT; USE REPORT; 39PROCEDURE C97201E IS 40 41 ELSE_BRANCH_TAKEN : BOOLEAN := FALSE ; 42 43BEGIN 44 45 46 TEST ("C97201E", "CHECK THAT NO RENDEZVOUS REQUESTED BY" & 47 " A CONDITIONAL_ENTRY_CALL CAN EVER OCCUR" & 48 " IN THE ABSENCE OF A CORRESPONDING " & 49 " ACCEPT_STATEMENT " ); 50 51 52 DECLARE 53 54 SUBTYPE SHORT IS INTEGER RANGE 10..20 ; 55 56 KEEP_ALIVE : INTEGER := 15 ; 57 58 TASK T IS 59 ENTRY DO_IT_NOW_ORELSE ( SHORT ) ; 60 END T ; 61 62 63 TASK BODY T IS 64 BEGIN 65 66 -- NO ACCEPT_STATEMENT FOR THE ENTRY_CALL BEING TESTED 67 ACCEPT DO_IT_NOW_ORELSE ( IDENT_INT(15) ); 68 69 -- THIS ALSO PREVENTS THIS SERVER 70 -- TASK FROM TERMINATING IF 71 -- UPON ACTIVATION 72 -- IT GETS TO RUN 73 -- AHEAD OF THE CALLER (WHICH 74 -- WOULD LEAD TO A SUBSEQUENT 75 -- TASKING_ERROR AT THE TIME OF 76 -- THE NO-WAIT CALL). 77 78 END ; 79 80 81 BEGIN 82 83 SELECT 84 T.DO_IT_NOW_ORELSE (10) ; -- ACCEPT_STATEMENT HAS 15 85 ELSE -- (I.E. CALLER ADOPTS A NO-WAIT POLICY) 86 -- THEREFORE THIS BRANCH MUST BE CHOSEN 87 ELSE_BRANCH_TAKEN := TRUE ; 88 COMMENT( "ELSE_BRANCH TAKEN" ); 89 END SELECT; 90 91 T.DO_IT_NOW_ORELSE(KEEP_ALIVE) ;-- THIS ALSO UPDATES NONLOCALS 92 93 END; -- END OF BLOCK CONTAINING THE ENTRY CALL 94 95 96 -- BY NOW, THE TASK IS TERMINATED 97 98 IF ELSE_BRANCH_TAKEN THEN 99 NULL ; 100 ELSE 101 FAILED( "RENDEZVOUS ATTEMPTED?" ); 102 END IF; 103 104 RESULT; 105 106 107END C97201E ; 108