| -- C93005D.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 IF AN EXCEPTION IS RAISED IN A DECLARATIVE PART OR PACKAGE |
| -- SPECIFICATION, A TASK DECLARED IN THE SAME DECLARATIVE PART BECOMES |
| -- COMPLETED BEFORE IT HAS BEEN ACTIVATED; ANY TASKS AWAITING A |
| -- RENDEZVOUS WITH THE COMPLETED RECEIVE TASKING_ERROR. |
| |
| -- CASE 2: TASKS IN DECLARATIVE PART OF A BLOCK AND PACKAGE |
| -- SPECIFICATION. THE TASKS DEPEND ON THE DECLARATIVE PART. |
| -- OTHER TASKS HAVE BEEN QUEUED ON THE TASKS' ENTRIES. |
| |
| -- RAC 19-MAR-1985 |
| -- JBG 06/03/85 |
| -- EG 10/30/85 ELIMINATE THE USE OF NUMERIC_ERROR IN TEST. |
| -- PWN 01/31/95 REMOVED PRAGMA PRIORITY FOR ADA 9X. |
| -- ADDED PROCEDURE TO KEEP PACKAGE BODIES LEGAL. |
| |
| with Impdef; |
| |
| WITH REPORT; USE REPORT; |
| WITH SYSTEM; USE SYSTEM; |
| PRAGMA ELABORATE (REPORT); |
| PACKAGE C93005D_PK1 IS |
| |
| -- THIS TYPE OF TASK IS ALWAYS UNACTIVATED. |
| TASK TYPE UNACTIVATED IS |
| ENTRY E; |
| END UNACTIVATED; |
| |
| TYPE ACC_UNACTIVATED IS ACCESS UNACTIVATED; |
| |
| -- ******************************************* |
| -- DEFINITIONS FOR MUST NOT BE TERMINATED TASKS |
| -- ******************************************* |
| -- |
| -- THIS SET OF DECLARATIONS DEFINES A RECORD TYPE MNT (MUST NOT |
| -- TERMINATE). WHENEVER SUCH A RECORD IS DECLARED, A COUNT IS |
| -- INCREMENTED AND A TASK IS CREATED. THE TASK WILL DECREMENT THE |
| -- COUNT UNLESS IT IS INCORRECTLY AND PREMATURELY TERMINATED. |
| -- THE ROUTINE CHECK IS CALLED TO VERIFY WHETHER THE COUNT |
| -- HAS RETURNED TO 0 (ALL MNT TASKS GOT A CHANCE TO DO THEIR |
| -- DECREMENT). |
| |
| -- AN MNT TASK. SUCH TASKS MUST NOT BE TERMINATED |
| -- BY ANYONE BUT THEMSELVES. |
| -- |
| TASK TYPE MNT_TASK IS |
| END MNT_TASK; |
| |
| FUNCTION F RETURN INTEGER; |
| |
| -- THE RECORD THAT IS DECLARED TO HOLD AN MNT TASK |
| -- AND FORCE CALLING F BEFORE CREATING THE TASK. |
| -- F INCREMENTS THE COUNT, THE TASK DECREMENTS THE |
| -- COUNT. |
| -- |
| TYPE MNT IS |
| RECORD |
| DUMMY : INTEGER := F; |
| T : MNT_TASK; |
| END RECORD; |
| |
| PROCEDURE CHECK; |
| |
| |
| -- ******************************************* |
| -- END OF DEFINITIONS FOR MUST NOT BE TERMINATED TASKS |
| -- ******************************************* |
| |
| END C93005D_PK1; |
| |
| |
| PACKAGE BODY C93005D_PK1 IS |
| |
| -- THIS TASK IS CALLED IF AN UNACTIVATED TASK |
| -- IS EVER INCORRECTLY ACTIVATED. IT REPORTS FAILURE. |
| |
| TASK T IS |
| ENTRY E; |
| END; |
| |
| -- *********************************************** |
| -- START OF DEFINITIONS FOR MUST NOT TERMINATE TASKS |
| -- *********************************************** |
| |
| -- COUNT OF TASKS THAT MUST NOT BE TERMINATED AND |
| -- ARE STILL ACTIVE. |
| |
| MNT_COUNT : INTEGER := 0; |
| |
| -- TASK TO SYNCHRONIZE THE MNT_COUNT VARIABLE |
| |
| TASK MNT_COUNTER IS |
| ENTRY INCR; |
| ENTRY DECR; |
| END MNT_COUNTER; |
| |
| -- SYNCHRONIZING TASK |
| |
| TASK BODY MNT_COUNTER IS |
| BEGIN |
| LOOP |
| SELECT |
| ACCEPT INCR DO |
| MNT_COUNT := MNT_COUNT +1; |
| END INCR; |
| |
| OR ACCEPT DECR DO |
| MNT_COUNT := MNT_COUNT -1; |
| END DECR; |
| |
| OR TERMINATE; |
| |
| END SELECT; |
| END LOOP; |
| END MNT_COUNTER; |
| |
| -- INCREMENT THE MNT_COUNT WHEN A TASK IS CREATED |
| -- |
| FUNCTION F RETURN INTEGER IS |
| BEGIN |
| MNT_COUNTER.INCR; |
| RETURN 0; |
| END F; |
| |
| -- CHECK THAT THE MUST NOT BE TERMINATED TASKS ARE |
| -- NOT YET TERMINATED AND THAT THE SYNCRHONIZING TASK |
| -- ITSELF IS NOT TERMINATED. |
| -- |
| PROCEDURE CHECK IS |
| BEGIN |
| IF MNT_COUNT /= 0 OR MNT_COUNTER'TERMINATED THEN |
| FAILED ("SOME MUST-NOT-TERMINATE TASK WAS PREMATURELY " & |
| "TERMINATED"); |
| END IF; |
| -- RESET THE COUNT FOR THE NEXT SUBTEST: |
| MNT_COUNT := 0; |
| END CHECK; |
| |
| -- A MUST NOT BE TERMINATED TASK. DELAY LONG ENOUGH |
| -- TO BE THE LAST TASK OF A SCOPE TO TERMINATE. THEN |
| -- DECREMENT THE COUNTER. |
| -- |
| TASK BODY MNT_TASK IS |
| BEGIN |
| DELAY 5.0 * Impdef.One_Second; |
| MNT_COUNTER.DECR; |
| END MNT_TASK; |
| |
| -- *********************************************** |
| -- END OF DEFINITIONS FOR MUST NOT TERMINATE TASKS |
| -- *********************************************** |
| |
| TASK BODY T IS |
| BEGIN |
| LOOP |
| SELECT |
| ACCEPT E DO |
| FAILED ("SOME TYPE U TASK WAS ACTIVATED"); |
| END E; |
| |
| OR TERMINATE; |
| END SELECT; |
| END LOOP; |
| END T; |
| |
| -- TASKS OF TYPE UNACTIVATED MUST NEVER BE ACTIVATED. |
| -- |
| TASK BODY UNACTIVATED IS |
| BEGIN |
| T.E; |
| END UNACTIVATED; |
| END C93005D_PK1; |
| |
| WITH C93005D_PK1; USE C93005D_PK1; |
| PRAGMA ELABORATE (C93005D_PK1); |
| GENERIC |
| T1 : IN OUT UNACTIVATED; |
| PACKAGE C93005D_ENQUEUE IS |
| PROCEDURE REQUIRE_BODY; |
| END; |
| |
| with Impdef; |
| WITH REPORT; USE REPORT; |
| WITH SYSTEM; USE SYSTEM; |
| PRAGMA ELABORATE (REPORT); |
| PACKAGE BODY C93005D_ENQUEUE IS |
| |
| TASK T3 IS |
| END T3; |
| |
| TASK BODY T3 IS |
| BEGIN |
| T1.E; |
| FAILED ("ENQUEUED CALLER DID NOT GET EXCEPTION"); |
| EXCEPTION |
| WHEN TASKING_ERROR => NULL; |
| WHEN OTHERS => FAILED ("WRONG EXCEPTION RAISED"); |
| END T3; |
| |
| PROCEDURE REQUIRE_BODY IS |
| BEGIN |
| NULL; |
| END; |
| BEGIN -- T3 CALLS T1 HERE |
| DELAY 1.0 * Impdef.One_Second; -- ENSURE THAT T3 EXECUTES |
| END C93005D_ENQUEUE; |
| |
| WITH REPORT, C93005D_PK1, C93005D_ENQUEUE; |
| USE REPORT, C93005D_PK1; |
| WITH SYSTEM; USE SYSTEM; |
| PROCEDURE C93005D IS |
| |
| |
| BEGIN |
| |
| TEST("C93005D", "TEST EXCEPTIONS TERMINATE NOT YET ACTIVATED " & |
| "TASKS"); |
| |
| COMMENT("SUBTEST 2: TASKS IN DECL PART OF A BLOCK AND A PACKAGE " & |
| "SPEC"); |
| COMMENT(" THE TASKS DEPEND ON THE DECLARATIVE PART"); |
| COMMENT(" OTHER TASKS HAVE BEEN ENQUEUED ON THE TASKS' ENTRIES"); |
| B21: DECLARE |
| X : MNT; |
| BEGIN |
| B22: BEGIN |
| B23: DECLARE |
| TYPE ACC_MNT IS ACCESS MNT; |
| T1 : UNACTIVATED; |
| Y : ACC_MNT := NEW MNT; |
| |
| PACKAGE HAS_UNACTIVATED IS |
| T2 : UNACTIVATED; |
| Z : ACC_MNT := NEW MNT; |
| PACKAGE ENQUEUE1 IS NEW C93005D_ENQUEUE(T1); |
| PACKAGE ENQUEUE2 IS NEW C93005D_ENQUEUE(T2); |
| I : POSITIVE := IDENT_INT(0); -- RAISE |
| -- CONSTRAINT_ERROR EXCEPTION. |
| -- TERMINATES T1 AND T2 AND INDIRECTLY THE 2 T3'S |
| END HAS_UNACTIVATED; |
| USE HAS_UNACTIVATED; |
| BEGIN -- WOULD HAVE BEEN ACTIVATED HERE |
| IF EQUAL (I, I) THEN |
| FAILED ("EXCEPTION NOT RAISED"); |
| END IF; |
| EXCEPTION |
| WHEN OTHERS => |
| FAILED ("EXCEPTION RAISED IN WRONG SCOPE"); |
| END B23; |
| EXCEPTION |
| WHEN CONSTRAINT_ERROR => |
| COMMENT("SUBTEST 2 COMPLETED"); |
| WHEN OTHERS => |
| FAILED ("WRONG EXCEPTION RAISED IN B22"); |
| END B22; |
| END B21; |
| |
| CHECK; |
| |
| RESULT; |
| |
| EXCEPTION |
| WHEN OTHERS => |
| FAILED ("EXCEPTION NOT ABSORBED"); |
| RESULT; |
| END C93005D; |
