gcc/ada/libgnat/g-traceb.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                       G N A T . T R A C E B A C K                        --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                      Copyright (C) 1999-2020, AdaCore                    --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  Run-time non-symbolic traceback support
  33
  34 with System.Traceback;
  35
  36 package body GNAT.Traceback is
  37
  38    ----------------
  39    -- Call_Chain --
  40    ----------------
  41
  42    procedure Call_Chain
  43      (Traceback : out Tracebacks_Array;
  44       Len       : out Natural)
  45    is
  46    begin
  47       System.Traceback.Call_Chain (Traceback, Traceback'Length, Len);
  48    end Call_Chain;
  49
  50    function Call_Chain
  51      (Max_Len     : Positive;
  52       Skip_Frames : Natural := 1) return Tracebacks_Array
  53    is
  54       Traceback : Tracebacks_Array (1 .. Max_Len);
  55       Len       : Natural;
  56    begin
  57       System.Traceback.Call_Chain
  58         (Traceback, Max_Len, Len, Skip_Frames => Skip_Frames + 1);
  59       return Traceback (1 .. Len);
  60    end Call_Chain;
  61
  62 end GNAT.Traceback;