/usr/share/ada/adainclude/aws/aws-net-log.adb is in libaws3.3.2-dev 3.3.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- Ada Web Server --
-- --
-- Copyright (C) 2004-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, or (at your option) any --
-- later version. This library 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are --
-- granted additional permissions described in the GCC Runtime Library --
-- Exception, version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
pragma Ada_2012;
with AWS.Utils;
package body AWS.Net.Log is
type Log_State is record
Write : Write_Callback;
Event : Event_Callback;
Error : Error_Callback;
Semaphore : Utils.Semaphore;
end record;
State : Log_State;
In_Error : Boolean := False with Thread_Local_Storage;
In_Event : Boolean := False with Thread_Local_Storage;
In_Write : Boolean := False with Thread_Local_Storage;
-----------
-- Error --
-----------
procedure Error (Socket : Socket_Type'Class; Message : String) is
begin
-- Draft check for State.Error before enter critical section
if State.Error = null then
return;
end if;
State.Semaphore.Seize;
-- Explicit check for State.Error inside of critical section
if State.Error /= null and then not In_Error then
In_Error := True;
begin
-- This call must never fail, catch all exceptions
State.Error (Socket, Message);
exception
when others =>
null;
end;
In_Error := False;
end if;
State.Semaphore.Release;
end Error;
-----------
-- Event --
-----------
procedure Event (Action : Event_Type; Socket : Socket_Type'Class) is
begin
State.Semaphore.Seize;
if State.Event /= null and then not In_Event then
In_Event := True;
begin
-- This call must never fail, catch all exceptions
State.Event (Action, Socket);
exception
when others =>
null;
end;
In_Event := False;
end if;
State.Semaphore.Release;
end Event;
---------------
-- Is_Active --
---------------
function Is_Active return Boolean is
begin
return State.Write /= null
or else State.Event /= null
or else State.Error /= null;
end Is_Active;
---------------------
-- Is_Event_Active --
---------------------
function Is_Event_Active return Boolean is
begin
return State.Event /= null;
end Is_Event_Active;
---------------------
-- Is_Write_Active --
---------------------
function Is_Write_Active return Boolean is
begin
return State.Write /= null;
end Is_Write_Active;
-----------
-- Start --
-----------
procedure Start
(Write : Write_Callback;
Event : Event_Callback := null;
Error : Error_Callback := null) is
begin
State.Semaphore.Seize;
State.Write := Write;
State.Event := Event;
State.Error := Error;
State.Semaphore.Release;
end Start;
----------
-- Stop --
----------
procedure Stop is
begin
State.Semaphore.Seize;
State.Event := null;
State.Write := null;
State.Error := null;
State.Semaphore.Release;
end Stop;
-----------
-- Write --
-----------
procedure Write
(Direction : Data_Direction;
Socket : Socket_Type'Class;
Data : Stream_Element_Array;
Last : Stream_Element_Offset) is
begin
State.Semaphore.Seize;
if State.Write /= null and then not In_Write then
In_Write := True;
begin
-- This call must never fail, catch all exceptions
State.Write
(Direction => Direction,
Socket => Socket,
Data => Data,
Last => Last);
exception
when others =>
null;
end;
In_Write := False;
end if;
State.Semaphore.Release;
end Write;
end AWS.Net.Log;
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