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-- C97201H.ADA
-- Grant of Unlimited Rights
--
-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
-- unlimited rights in the software and documentation contained herein.
-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
-- this public release, the Government intends to confer upon all
-- recipients unlimited rights equal to those held by the Government.
-- These rights include rights to use, duplicate, release or disclose the
-- released technical data and computer software in whole or in part, in
-- any manner and for any purpose whatsoever, and to have or permit others
-- to do so.
--
-- DISCLAIMER
--
-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
-- PARTICULAR PURPOSE OF SAID MATERIAL.
--*
-- CHECK THAT A RENDEZVOUS REQUESTED BY A CONDITIONAL_ENTRY_CALL
-- IS PERFORMED ONLY IF IMMEDIATELY POSSIBLE.
-- CASE H: THE CORRESPONDING ACCEPT_STATEMENT IS CLOSED
-- AND THIS FACT IS NOT STATICALLY DETERMINABLE.
-- RM 4/22/82
WITH REPORT; USE REPORT;
PROCEDURE C97201H IS
ELSE_BRANCH_TAKEN : BOOLEAN := FALSE ;
RENDEZVOUS_OCCURRED : BOOLEAN := FALSE ;
QUEUE_NOT_EMPTY : BOOLEAN := FALSE ;
X : INTEGER := 17 ;
BEGIN
TEST ("C97201H", "CHECK THAT NO RENDEZVOUS REQUESTED BY" &
" A CONDITIONAL_ENTRY_CALL CAN EVER OCCUR" &
" IF THE CORRESPONDING ACCEPT_STATEMENT IS" &
" CLOSED" );
-------------------------------------------------------------------
DECLARE
TASK T IS
ENTRY DO_IT_NOW_ORELSE( DID_YOU_DO_IT : IN OUT BOOLEAN);
ENTRY KEEP_ALIVE ;
END T ;
TASK BODY T IS
BEGIN
IF DO_IT_NOW_ORELSE'COUNT /= 0 THEN
QUEUE_NOT_EMPTY := TRUE ;
END IF;
SELECT
WHEN 3 = IDENT_INT(5) =>
ACCEPT DO_IT_NOW_ORELSE
( DID_YOU_DO_IT : IN OUT BOOLEAN)
DO
DID_YOU_DO_IT := TRUE ;
END;
OR
ACCEPT KEEP_ALIVE ; -- TO PREVENT SELECT_ERROR
END SELECT;
IF DO_IT_NOW_ORELSE'COUNT /= 0 THEN
QUEUE_NOT_EMPTY := TRUE ;
END IF;
END T ;
BEGIN
COMMENT( "PERMANENTLY CLOSED" );
SELECT
T.DO_IT_NOW_ORELSE( RENDEZVOUS_OCCURRED );
ELSE -- (I.E. CALLER ADOPTS A NO-WAIT POLICY)
-- THEREFORE THIS BRANCH MUST BE CHOSEN
ELSE_BRANCH_TAKEN := TRUE ;
COMMENT( "ELSE_BRANCH TAKEN" );
END SELECT;
T.KEEP_ALIVE ; -- THIS ALSO UPDATES THE NONLOCALS
END; -- END OF BLOCK CONTAINING THE ENTRY CALL
-------------------------------------------------------------------
-- BY NOW, THE TASK IS TERMINATED
IF RENDEZVOUS_OCCURRED
THEN
FAILED( "RENDEZVOUS OCCURRED" );
END IF;
IF QUEUE_NOT_EMPTY
THEN
FAILED( "ENTRY QUEUE NOT EMPTY" );
END IF;
IF ELSE_BRANCH_TAKEN THEN
NULL ;
ELSE
FAILED( "RENDEZVOUS ATTEMPTED?" );
END IF;
RESULT;
END C97201H ;
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