File : adagio-os-memory.adb
------------------------------------------------------------------------------
-- ADAGIO - ADALID - AENEA. --
-- --
-- Copyright (C) 2003 --
-- A. Mosteo. --
-- --
-- Authors: A. Mosteo. (adagio@mosteo.com) --
-- --
-- If you have any questions in regard to this software, please address --
-- them to the above email. --
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-- 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 2 of the License, or (at --
-- your option) any later version. --
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-- 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. --
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-- You should have received a copy of the GNU General Public License --
-- along with this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
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-- You are not allowed to use any part of this code to develop a program --
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------------------------------------------------------------------------------
-- $Id: adagio-os-memory.adb,v 1.3 2004/01/21 21:05:39 Jano Exp $
with Agpl.Strings;
with Agpl.Strings.Fields;
with Helpers;
with Text_IO;
package body Adagio.Os.Memory is
------------------------------------------------------------------------
-- Heap_usage --
------------------------------------------------------------------------
-- Returns the heap memory in use in bytes
-- This thread pid is OK, since all threads share the memory info (?)
function Heap_usage return Natural is
Pid : constant Integer := Helpers.Get_Pid;
use Text_IO;
File : File_Type;
Line : String (1 .. 256);
Last : Natural;
begin
Open (File, Name => "/proc/" & Agpl.Strings.To_String (Pid) & "/statm", Mode => In_file);
Get_Line (File, Line, Last);
Close (File);
-- The second number in /proc/<pid>/statm gives the resident memory size
return 1024 * Natural'Value (Agpl.Strings.Fields.Select_Field (Line (1 .. Last), 2));
exception
when others =>
if Is_Open (File) then
Close (File);
end if;
return 0;
end Heap_usage;
end Adagio.Os.Memory;