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-- Copyright 2009-2021 Free Software Foundation, Inc.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 3 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
procedure Foo is
Value : Integer := 0;
task type Caller is
entry Initialize;
entry Call_Break_Me;
entry Finalize;
end Caller;
type Caller_Ptr is access Caller;
procedure Break_Me is
begin
Value := Value + 1;
end Break_Me;
task body Caller is
begin
accept Initialize do
null;
end Initialize;
accept Call_Break_Me do
Break_Me;
end Call_Break_Me;
accept Finalize do
null;
end Finalize;
end Caller;
Task_List : array (1 .. 3) of Caller_Ptr;
begin
-- Start all our tasks, and call the "Initialize" entry to make
-- sure all of them have now been started. We call that entry
-- immediately after having created the task in order to make sure
-- that we wait for that task to be created before we try to create
-- another one. That way, we know that the order in our Task_List
-- corresponds to the order in the GNAT runtime.
for J in Task_List'Range loop
Task_List (J) := new Caller;
Task_List (J).Initialize;
end loop;
-- Next, call their Call_Break_Me entry of each task, using the same
-- order as the order used to create them.
for J in Task_List'Range loop -- STOP_HERE
Task_List (J).Call_Break_Me;
end loop;
-- And finally, let all the tasks die...
for J in Task_List'Range loop
Task_List (J).Finalize;
end loop;
null; -- STOP_HERE_2
end Foo;
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