File : s-traceb.adb
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
5 -- S Y S T E M . T R A C E B A C K --
-- --
-- B o d y --
-- --
-- $Revision: 1.5 $
10 -- --
-- Copyright (C) 1999-2001 Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
25 -- 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. --
30 -- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
35
-- This is the default version of this package
package body System.Traceback is
40 ------------------
-- C_Call_Chain --
------------------
function C_Call_Chain
45 (Traceback : System.Address;
Max_Len : Natural)
return Natural
is
Val : Natural;
50
begin
Call_Chain (Traceback, Max_Len, Val);
return Val;
end C_Call_Chain;
55
----------------
-- Call_Chain --
----------------
60 function Backtrace
(Traceback : System.Address;
Len : Integer;
Exclude_Min : System.Address;
Exclude_Max : System.Address)
65 return Integer;
pragma Import (C, Backtrace, "__gnat_backtrace");
procedure Call_Chain
(Traceback : System.Address;
70 Max_Len : Natural;
Len : out Natural;
Exclude_Min,
Exclude_Max : System.Address := System.Null_Address)
is
75 begin
Len := Backtrace (Traceback, Max_Len, Exclude_Min, Exclude_Max);
end Call_Chain;
end System.Traceback;