/usr/share/ada/adainclude/gpr/gpr-compilation.adb is in libgpr1-dev 2017-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- --
-- GPR PROJECT MANAGER --
-- --
-- Copyright (C) 2012-2017, Free Software Foundation, Inc. --
-- --
-- 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 MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- --
-- --
-- --
-- --
-- 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/>. --
-- --
------------------------------------------------------------------------------
with Ada.Text_IO;
with Ada.Environment_Variables; use Ada;
with Ada.Strings.Fixed;
with GNAT.MD5; use GNAT;
with GNAT.String_Split; use GNAT.String_Split;
package body GPR.Compilation is
Last_Env_MD5 : MD5.Message_Digest := (others => <>);
-- Keep last environment variable set to avoid too many system calls.
-- ??? Ideally, we should set them when spawning the process, in
-- which case it would be less expensive to set and could be set
-- every time.
-----------
-- Image --
-----------
function Image (Pid : Remote_Id) return String is
N_Img : constant String := Remote_Id'Image (Pid);
begin
return N_Img (N_Img'First + 1 .. N_Img'Last);
end Image;
-------------
-- Set_Env --
-------------
procedure Set_Env
(Env : String;
Fail : Boolean;
Force : Boolean := False)
is
Env_List : Slice_Set;
begin
Create (Env_List, Env, String'(1 => Opts_Sep));
for K in 1 .. Slice_Count (Env_List) loop
declare
Var : constant String := Slice (Env_List, K);
I : constant Natural := Strings.Fixed.Index (Var, "=");
Sum : constant MD5.Message_Digest := MD5.Digest (Var);
begin
if I /= 0 then
if Force or else Last_Env_MD5 /= Sum then
Environment_Variables.Set
(Name => Var (Var'First .. I - 1),
Value => Var (I + 1 .. Var'Last));
Last_Env_MD5 := Sum;
end if;
elsif Var'Length > 0 then
-- This is a protocol error, we do not want to fail here as
-- this routine is used by gprslave. This error message should
-- never been displayed anyway.
Text_IO.Put_Line
("wrong environment variable, missing '=' : " & Var);
if Fail then
OS_Exit (1);
end if;
end if;
end;
end loop;
end Set_Env;
--------------------
-- Shared_Counter --
--------------------
protected body Shared_Counter is
-----------
-- Count --
-----------
function Count return Natural is
begin
return Counter;
end Count;
---------------
-- Decrement --
---------------
procedure Decrement is
begin
Counter := Counter - 1;
end Decrement;
---------------
-- Increment --
---------------
procedure Increment is
begin
Counter := Counter + 1;
end Increment;
-----------
-- Reset --
-----------
procedure Reset is
begin
Counter := 0;
end Reset;
-------------------
-- Wait_Non_Zero --
-------------------
entry Wait_Non_Zero when Counter /= 0 is
begin
null;
end Wait_Non_Zero;
end Shared_Counter;
end GPR.Compilation;
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