File : s-elaall.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- S Y S T E M . E L A B O R A T I O N _ A L L O C A T O R S --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2014, Free Software Foundation, Inc. --
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 -- --
19 -- --
20 -- --
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 package body System.Elaboration_Allocators is
33
34 Elaboration_In_Progress : Boolean;
35 pragma Atomic (Elaboration_In_Progress);
36 -- Flag to show if elaboration is active. We don't attempt to initialize
37 -- this because we want to be sure it gets reset if we are in a multiple
38 -- elaboration situation of some kind. Make it atomic to prevent race
39 -- conditions of any kind (not clearly necessary, but harmless!)
40
41 ------------------------------
42 -- Check_Standard_Allocator --
43 ------------------------------
44
45 procedure Check_Standard_Allocator is
46 begin
47 if not Elaboration_In_Progress then
48 raise Program_Error with
49 "standard allocator after elaboration is complete is not allowed "
50 & "(No_Standard_Allocators_After_Elaboration restriction active)";
51 end if;
52 end Check_Standard_Allocator;
53
54 -----------------------------
55 -- Mark_End_Of_Elaboration --
56 -----------------------------
57
58 procedure Mark_End_Of_Elaboration is
59 begin
60 Elaboration_In_Progress := False;
61 end Mark_End_Of_Elaboration;
62
63 -------------------------------
64 -- Mark_Start_Of_Elaboration --
65 -------------------------------
66
67 procedure Mark_Start_Of_Elaboration is
68 begin
69 Elaboration_In_Progress := True;
70 end Mark_Start_Of_Elaboration;
71
72 end System.Elaboration_Allocators;