3 -- Grant of Unlimited Rights
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
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.
25 -- CHECK THAT A RENDEZVOUS REQUESTED BY A CONDITIONAL_ENTRY_CALL
26 -- IS PERFORMED ONLY IF IMMEDIATELY POSSIBLE.
28 -- CASE A: THE TASK TO BE CALLED IS NOT YET ACTIVE AS OF THE
29 -- MOMENT OF CALL (CONDITIONAL_ENTRY_CALL),
30 -- AND THIS FACT CAN BE DETERMINED STATICALLY.
36 WITH REPORT
; USE REPORT
;
39 ELSE_BRANCH_TAKEN
: INTEGER := 3 ;
44 TEST
("C97201A", "CHECK THAT NO RENDEZVOUS REQUESTED BY" &
45 " A CONDITIONAL_ENTRY_CALL CAN OCCUR WHILE" &
46 " THE CALLED TASK IS NOT YET ACTIVE" );
49 -------------------------------------------------------------------
56 ENTRY DO_IT_NOW_ORELSE
( AUTHORIZED
: IN BOOLEAN ) ;
62 PACKAGE SECOND_ATTEMPT
IS END SECOND_ATTEMPT
;
63 PACKAGE BODY SECOND_ATTEMPT
IS
67 DO_IT_NOW_ORELSE
(FALSE) ;--CALLING (OWN) ENTRY
68 ELSE -- (I.E. CALLER ADOPTS A NO-WAIT POLICY)
69 -- THEREFORE THIS BRANCH MUST BE CHOSEN
70 ELSE_BRANCH_TAKEN
:= 2 * ELSE_BRANCH_TAKEN
;
71 COMMENT
( "ELSE_BRANCH TAKEN (#2)" );
78 ACCEPT DO_IT_NOW_ORELSE
( AUTHORIZED
: IN BOOLEAN ) DO
81 COMMENT
( "AUTHORIZED ENTRY_CALL" );
83 FAILED
( "UNAUTHORIZED ENTRY_CALL" );
86 END DO_IT_NOW_ORELSE
;
92 PACKAGE FIRST_ATTEMPT
IS END FIRST_ATTEMPT
;
93 PACKAGE BODY FIRST_ATTEMPT
IS
96 T
.DO_IT_NOW_ORELSE
(FALSE) ;
97 ELSE -- (I.E. CALLER ADOPTS A NO-WAIT POLICY)
98 -- THEREFORE THIS BRANCH MUST BE CHOSEN
99 ELSE_BRANCH_TAKEN
:= 1 + ELSE_BRANCH_TAKEN
;
100 COMMENT
( "ELSE_BRANCH TAKEN (#1)" );
108 T
.DO_IT_NOW_ORELSE
( TRUE ); -- TO SATISFY THE SERVER'S
109 -- WAIT FOR SUCH A CALL
113 WHEN TASKING_ERROR
=>
114 FAILED
( "TASKING ERROR" );
119 -------------------------------------------------------------------
122 -- BY NOW, THE TASK IS TERMINATED (AND THE NONLOCALS UPDATED)
125 CASE ELSE_BRANCH_TAKEN
IS
128 FAILED
( "NO 'ELSE'; BOTH (?) RENDEZVOUS ATTEMPTED?" );
131 FAILED
( "'ELSE' #1 ONLY; RENDEZVOUS (#2) ATTEMPTED?" );
134 FAILED
( "'ELSE' #2 ONLY; RENDEZVOUS (#1) ATTEMPTED?" );
137 FAILED
( "WRONG ORDER FOR 'ELSE': #2,#1 " );
143 FAILED
( "WRONG CASE_VALUE" );