/usr/share/ada/adainclude/alog/alog-active_logger.adb is in libalog0.4.1-base-dev 0.4.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- Copyright (c) 2009-2011,
-- Reto Buerki, Adrian-Ken Rueegsegger
--
-- This file is part of Alog.
--
-- Alog is free software; you can redistribute it and/or modify
-- it under the terms of the GNU Lesser General Public License as published
-- by the Free Software Foundation; either version 2.1 of the License, or
-- (at your option) any later version.
--
-- Alog 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 Lesser General Public License for more details.
--
-- You should have received a copy of the GNU Lesser General Public License
-- along with Alog; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
-- MA 02110-1301 USA
--
with Ada.Task_Identification;
with Alog.Log_Request;
package body Alog.Active_Logger is
-------------------------------------------------------------------------
procedure All_Done (Logger : in out Instance) is
begin
Logger.Message_Queue.All_Done;
end All_Done;
-------------------------------------------------------------------------
procedure Attach_Default_Facility (Logger : in out Instance)
is
begin
Logger.Backend.Attach_Default_Facility;
end Attach_Default_Facility;
-------------------------------------------------------------------------
procedure Attach_Facility
(Logger : in out Instance;
Facility : Facilities.Handle)
is
begin
Logger.Backend.Attach_Facility (Facility);
end Attach_Facility;
-------------------------------------------------------------------------
procedure Attach_Transform
(Logger : in out Instance;
Transform : Transforms.Handle)
is
begin
Logger.Backend.Attach_Transform (Transform);
end Attach_Transform;
-------------------------------------------------------------------------
procedure Clear (Logger : in out Instance) is
begin
Logger.Backend.Clear;
end Clear;
-------------------------------------------------------------------------
procedure Detach_Default_Facility (Logger : in out Instance)
is
begin
Logger.Backend.Detach_Default_Facility;
end Detach_Default_Facility;
-------------------------------------------------------------------------
procedure Detach_Facility
(Logger : in out Instance;
Name : String)
is
begin
Logger.Backend.Detach_Facility (Name);
end Detach_Facility;
-------------------------------------------------------------------------
procedure Detach_Transform
(Logger : in out Instance;
Name : String)
is
begin
Logger.Backend.Detach_Transform (Name);
end Detach_Transform;
-------------------------------------------------------------------------
function Facility_Count (Logger : Instance) return Natural is
F_Count : Natural;
begin
Logger.Backend.Facility_Count (Count => F_Count);
return F_Count;
end Facility_Count;
-------------------------------------------------------------------------
procedure Finalize (Helper : in out Shutdown_Helper) is
begin
Helper.Logger.Shutdown;
end Finalize;
-------------------------------------------------------------------------
function Get_Queue_Length (Logger : Instance) return Natural is
begin
return Logger.Message_Queue.Length;
end Get_Queue_Length;
-------------------------------------------------------------------------
function Is_Terminated (Logger : Instance) return Boolean is
begin
return Logger.Backend'Terminated
and then Logger.Logger_Task'Terminated;
end Is_Terminated;
-------------------------------------------------------------------------
procedure Iterate
(Logger : in out Instance;
Process : Tasked_Logger.Facility_Update_Handle)
is
begin
Logger.Backend.Iterate (Process);
end Iterate;
-------------------------------------------------------------------------
procedure Log_Message
(Logger : in out Instance;
Source : String := "";
Level : Log_Level;
Msg : String)
is
begin
Logger.Message_Queue.Put
(Element => Log_Request.Create
(ID => Ada.Task_Identification.Current_Task,
Source => Source,
Level => Level,
Message => Msg));
end Log_Message;
-------------------------------------------------------------------------
procedure Set_Except_Handler
(Logger : Instance;
Proc : Exceptions.Exception_Handler)
is
begin
Logger.Backend.Set_Except_Handler (Proc => Proc);
end Set_Except_Handler;
-------------------------------------------------------------------------
procedure Shutdown
(Logger : in out Instance;
Flush : Boolean := True)
is
begin
if Logger.Is_Terminated then
return;
end if;
if Flush then
Logger.Message_Queue.All_Done;
end if;
Logger.Clear;
Logger.Trigger.Shutdown;
Logger.Backend.Shutdown;
end Shutdown;
-------------------------------------------------------------------------
function Transform_Count (Logger : Instance) return Natural is
T_Count : Natural;
begin
Logger.Backend.Transform_Count (Count => T_Count);
return T_Count;
end Transform_Count;
-------------------------------------------------------------------------
procedure Update
(Logger : in out Instance;
Name : String;
Process : Tasked_Logger.Facility_Update_Handle)
is
begin
Logger.Backend.Update (Name => Name,
Process => Process);
end Update;
-------------------------------------------------------------------------
protected body Trigger_Type is
----------------------------------------------------------------------
procedure Shutdown is
begin
Shutdown_Requested := True;
end Shutdown;
----------------------------------------------------------------------
entry Stop when Shutdown_Requested is
begin
null;
end Stop;
end Trigger_Type;
-------------------------------------------------------------------------
task body Logging_Task is
begin
select
Parent.Trigger.Stop;
then abort
Log_Loop :
loop
declare
Current_Request : Log_Request.Instance;
begin
Parent.Message_Queue.Get
(Element => Current_Request);
Parent.Backend.Log_Message
(Source => Current_Request.Get_Source,
Level => Current_Request.Get_Log_Level,
Msg => Current_Request.Get_Message,
Caller => Current_Request.Get_Caller_ID);
Parent.Message_Queue.Done;
exception
when Program_Error =>
-- The Queue has terminated, let's shutdown.
exit Log_Loop;
when others =>
-- Ignore other errors and resume normal operation.
null;
end;
end loop Log_Loop;
end select;
end Logging_Task;
end Alog.Active_Logger;
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