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top - downloadIndex: ┃ B T ┃
Length: 5801 (0x16a9)
Types: TextFile
Names: »B«
└─⟦149519bd4⟧ Bits:30000546 8mm tape, Rational 1000, !projects 93-07-13
└─ ⟦124ff5788⟧ »DATA«
└─⟦this⟧
└─⟦a7d1ea751⟧ Bits:30000550 8mm tape, Rational 1000, !users!projects 94_04_11
└─ ⟦129cab021⟧ »DATA«
└─⟦this⟧
└─⟦f64eaa120⟧ Bits:30000752 8mm tape, Rational 1000, !projects 93 02 16
└─ ⟦6f12a12be⟧ »DATA«
└─⟦this⟧
└─⟦2f6cfab89⟧ Bits:30000547 8mm tape, Rational 1000, !projects 94-01-04
└─ ⟦d65440be7⟧ »DATA«
└─⟦this⟧
separate (Pool)
task body Manager is
Ptr : Pool.Object_Ptr;
Success : Boolean;
begin
loop
select
accept Control (Object : Directory.Object;
Status : out Pool.Status) do
begin
String_Map.Define (The_Map => Map,
D => Full_Name (Object),
R => Nil (Object),
Trap_Multiples => True);
Status := Ok;
exception
when String_Map.Multiply_Defined =>
Status := Object_Already_In_The_Pool;
when others =>
raise;
end;
end Control;
or
accept Uncontrol (Object : Directory.Object;
Status : out Pool.Status) do
begin
String_Map.Find (The_Map => Map,
D => Full_Name (Object),
R => Ptr,
Success => Success);
if not Success then
Status := Object_Not_In_The_Pool;
return;
end if;
if not Reader.Is_Empty (Ptr.Readers) then
Status := Object_Has_Readers;
return;
end if;
if not Object_Editor.Same_Editor
(Ptr.Updater, Object_Editor.Nil) then
Status := Object_Has_Updater;
return;
end if;
String_Map.Undefine (The_Map => Map,
D => Full_Name (Object));
Status := Ok;
exception
when String_Map.Undefined =>
Status := Object_Not_In_The_Pool;
when others =>
raise;
end;
end Uncontrol;
or
accept Abandon (Object : Directory.Object;
Editor : Object_Editor.Instance;
Status : out Pool.Status) do
String_Map.Find (The_Map => Map,
D => Full_Name (Object),
R => Ptr,
Success => Success);
if not Success then
Status := Object_Not_In_The_Pool;
return;
end if;
if Object_Editor.Same_Editor (Ptr.Updater, Editor) then
Ptr.Updater := Object_Editor.Nil;
end if;
Reader.Delete (S => Ptr.Readers, X => Editor);
Status := Ok;
end Abandon;
or
accept Read (Object : Directory.Object;
Editor : Object_Editor.Instance;
Status : out Pool.Status) do
String_Map.Find (The_Map => Map,
D => Full_Name (Object),
R => Ptr,
Success => Success);
if not Success then
Status := Object_Not_In_The_Pool;
return;
end if;
Reader.Add (S => Ptr.Readers, X => Editor);
Status := Ok;
end Read;
or
accept Update (Object : Directory.Object;
Editor : Object_Editor.Instance;
Status : out Pool.Status) do
String_Map.Find (The_Map => Map,
D => Full_Name (Object),
R => Ptr,
Success => Success);
if not Success then
Status := Object_Not_In_The_Pool;
return;
end if;
if Object_Editor.Is_Nil (Ptr.Updater) then
Ptr.Updater := Editor;
Status := Ok;
else
Status := Object_Has_Updater;
end if;
end Update;
or
accept Abandon_Update (Object : Directory.Object;
Editor : Object_Editor.Instance;
Status : out Pool.Status) do
String_Map.Find (The_Map => Map,
D => Full_Name (Object),
R => Ptr,
Success => Success);
if not Success then
Status := Object_Not_In_The_Pool;
return;
end if;
if Object_Editor.Same_Editor (Ptr.Updater, Editor) then
Ptr.Updater := Object_Editor.Nil;
Status := Ok;
else
Status := Bad_Updater;
end if;
end Abandon_Update;
or
accept Is_Controlled (Object : Directory.Object;
Status : out Boolean) do
String_Map.Find (The_Map => Map,
D => Full_Name (Object),
R => Ptr,
Success => Status);
end Is_Controlled;
or
terminate;
end select;
end loop;
end Manager;