| -- C94008D.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 CORRECT OPERATION OF SELECT WITH TERMINATE ALTERNATIVE WHEN |
| -- EXECUTED FROM AN INNER BLOCK WITH OUTER DEPENDING TASKS. |
| |
| -- JEAN-PIERRE ROSEN 03-MAR-84 |
| -- JRK 4/7/86 |
| -- JBG 9/4/86 ELIMINATED SHARED VARIABLES; ADDED GENERIC UNIT/SUBUNIT |
| -- PWN 09/11/94 REMOVED PRAGMA PRIORITY FOR ADA 9X. |
| |
| -- GENERIC UNIT FOR DOING UPDATES OF SHARED VARIABLES |
| GENERIC |
| TYPE HOLDER_TYPE IS PRIVATE; |
| TYPE VALUE_TYPE IS PRIVATE; |
| INITIAL_VALUE : HOLDER_TYPE; |
| WITH PROCEDURE SET (HOLDER : OUT HOLDER_TYPE; |
| VALUE : IN HOLDER_TYPE) IS <>; |
| WITH PROCEDURE UPDATE (HOLDER : IN OUT HOLDER_TYPE; |
| VALUE : IN VALUE_TYPE) IS <>; |
| PACKAGE SHARED_C94008D IS |
| PROCEDURE SET (VALUE : IN HOLDER_TYPE); |
| PROCEDURE UPDATE (VALUE : IN VALUE_TYPE); |
| FUNCTION GET RETURN HOLDER_TYPE; |
| END SHARED_C94008D; |
| |
| PACKAGE BODY SHARED_C94008D IS |
| TASK SHARE IS |
| ENTRY SET (VALUE : IN HOLDER_TYPE); |
| ENTRY UPDATE (VALUE : IN VALUE_TYPE); |
| ENTRY READ (VALUE : OUT HOLDER_TYPE); |
| END SHARE; |
| |
| TASK BODY SHARE IS SEPARATE; |
| |
| PROCEDURE SET (VALUE : IN HOLDER_TYPE) IS |
| BEGIN |
| SHARE.SET (VALUE); |
| END SET; |
| |
| PROCEDURE UPDATE (VALUE : IN VALUE_TYPE) IS |
| BEGIN |
| SHARE.UPDATE (VALUE); |
| END UPDATE; |
| |
| FUNCTION GET RETURN HOLDER_TYPE IS |
| VALUE : HOLDER_TYPE; |
| BEGIN |
| SHARE.READ (VALUE); |
| RETURN VALUE; |
| END GET; |
| |
| BEGIN |
| SHARE.SET (INITIAL_VALUE); -- SET INITIAL VALUE |
| END SHARED_C94008D; |
| |
| PACKAGE EVENTS_C94008D IS |
| |
| TYPE EVENT_TYPE IS |
| RECORD |
| TRACE : STRING (1..4) := "...."; |
| LENGTH : NATURAL := 0; |
| END RECORD; |
| |
| PROCEDURE UPDATE (VAR : IN OUT EVENT_TYPE; VAL : CHARACTER); |
| PROCEDURE SET (VAR : OUT EVENT_TYPE; VAL : EVENT_TYPE); |
| END EVENTS_C94008D; |
| |
| PACKAGE COUNTER_C94008D IS |
| PROCEDURE UPDATE (VAR : IN OUT INTEGER; VAL : INTEGER); |
| PROCEDURE SET (VAR : OUT INTEGER; VAL : INTEGER); |
| END COUNTER_C94008D; |
| |
| PACKAGE BODY COUNTER_C94008D IS |
| PROCEDURE UPDATE (VAR : IN OUT INTEGER; VAL : INTEGER) IS |
| BEGIN |
| VAR := VAR + VAL; |
| END UPDATE; |
| |
| PROCEDURE SET (VAR : OUT INTEGER; VAL : INTEGER) IS |
| BEGIN |
| VAR := VAL; |
| END SET; |
| END COUNTER_C94008D; |
| |
| PACKAGE BODY EVENTS_C94008D IS |
| PROCEDURE UPDATE (VAR : IN OUT EVENT_TYPE; VAL : CHARACTER) IS |
| BEGIN |
| VAR.LENGTH := VAR.LENGTH + 1; |
| VAR.TRACE(VAR.LENGTH) := VAL; |
| END UPDATE; |
| |
| PROCEDURE SET (VAR : OUT EVENT_TYPE; VAL : EVENT_TYPE) IS |
| BEGIN |
| VAR := VAL; |
| END SET; |
| |
| END EVENTS_C94008D; |
| |
| SEPARATE (SHARED_C94008D) |
| TASK BODY SHARE IS |
| VARIABLE : HOLDER_TYPE; |
| BEGIN |
| LOOP |
| SELECT |
| ACCEPT SET (VALUE : IN HOLDER_TYPE) DO |
| SHARED_C94008D.SET (VARIABLE, VALUE); |
| END SET; |
| OR |
| ACCEPT UPDATE (VALUE : IN VALUE_TYPE) DO |
| SHARED_C94008D.UPDATE (VARIABLE, VALUE); |
| END UPDATE; |
| OR |
| ACCEPT READ (VALUE : OUT HOLDER_TYPE) DO |
| VALUE := VARIABLE; |
| END READ; |
| OR |
| TERMINATE; |
| END SELECT; |
| END LOOP; |
| END SHARE; |
| |
| with Impdef; |
| WITH REPORT; USE REPORT; |
| WITH SYSTEM; USE SYSTEM; |
| WITH SHARED_C94008D, COUNTER_C94008D, EVENTS_C94008D; |
| USE COUNTER_C94008D, EVENTS_C94008D; |
| PROCEDURE C94008D IS |
| |
| PACKAGE TRACE IS |
| NEW SHARED_C94008D (EVENT_TYPE, CHARACTER, ("....", 0)); |
| PACKAGE TERMINATE_COUNT IS |
| NEW SHARED_C94008D (INTEGER, INTEGER, 0); |
| |
| PROCEDURE EVENT (VAR : CHARACTER) RENAMES TRACE.UPDATE; |
| |
| FUNCTION ENTER_TERMINATE RETURN BOOLEAN IS |
| BEGIN |
| TERMINATE_COUNT.UPDATE (1); |
| RETURN TRUE; |
| END ENTER_TERMINATE; |
| |
| BEGIN |
| TEST ("C94008D", "CHECK CORRECT OPERATION OF SELECT WITH " & |
| "TERMINATE ALTERNATIVE FROM AN INNER BLOCK"); |
| |
| DECLARE |
| |
| TASK T1 IS |
| ENTRY E1; |
| END T1; |
| |
| TASK BODY T1 IS |
| BEGIN |
| DECLARE |
| |
| TASK T2 IS |
| ENTRY E2; |
| END T2; |
| |
| TASK BODY T2 IS |
| BEGIN |
| DELAY 10.0 * Impdef.One_Second; |
| |
| IF TERMINATE_COUNT.GET /= 1 THEN |
| DELAY 20.0 * Impdef.One_Second; |
| END IF; |
| |
| IF TERMINATE_COUNT.GET /= 1 THEN |
| FAILED ("30 SECOND DELAY NOT ENOUGH"); |
| END IF; |
| |
| IF T1'TERMINATED OR NOT T1'CALLABLE THEN |
| FAILED ("T1 PREMATURELY TERMINATED"); |
| END IF; |
| |
| EVENT ('A'); |
| |
| SELECT |
| ACCEPT E2; |
| OR TERMINATE; |
| END SELECT; |
| |
| FAILED ("TERMINATE NOT SELECTED IN T2"); |
| END T2; |
| |
| BEGIN |
| BEGIN |
| EVENT ('B'); |
| |
| SELECT |
| ACCEPT E1; |
| OR WHEN ENTER_TERMINATE => TERMINATE; |
| END SELECT; |
| |
| FAILED ("TERMINATE NOT SELECTED IN T1"); |
| END; |
| END; |
| END T1; |
| |
| BEGIN |
| EVENT ('C'); |
| EXCEPTION |
| WHEN OTHERS => FAILED ("EXCEPTION RECEIVED IN MAIN"); |
| END; |
| |
| IF TRACE.GET.TRACE(3) = '.' OR TRACE.GET.TRACE(4) /= '.' THEN |
| FAILED ("ALL EVENTS NOT PROCESSED CORRECTLY"); |
| END IF; |
| |
| COMMENT ("EXECUTION ORDER WAS " & TRACE.GET.TRACE); |
| |
| RESULT; |
| END C94008D; |