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3 -- GNAT COMPILER COMPONENTS --
11 -- Copyright (C) 1998-2000, Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- 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- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- 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 --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- GNAT was originally developed by the GNAT team at New York University. --
25 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
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29 -- This package contains routines involved in the required expansions for
30 -- handling shared memory accesses for variables in Shared_Passive packages.
32 -- See detailed documentation in System.Shared_Storage spec for a full
33 -- description of the approach that is taken for handling distributed
34 -- shared memory. This expansion unit in the compiler is responsible
35 -- for generating the calls to routines in System.Shared_Storage.
37 with Types; use Types;
40 procedure Expand_Shared_Passive_Variable (N : Node_Id);
41 -- N is the identifier for a shared passive variable. This routine is
42 -- responsible for determining if this is an assigned to N, or a
43 -- reference to N, and generating the required calls to the shared
44 -- memory read/write procedures.
46 procedure Add_Shared_Var_Lock_Procs (N : Node_Id);
47 -- The argument is a protected subprogram call, before it is rewritten
48 -- by Exp_Ch9.Build_Protected_Subprogram_Call. This routine, which is
49 -- called only in the case of an external call to a protected object
50 -- that has Is_Shared_Passive set, deals with installing the required
51 -- global lock calls for this case. It also generates the necessary
52 -- read/write calls for the protected object within the lock region.
54 procedure Make_Shared_Var_Procs (N : Node_Id);
55 -- N is the node for the declaration of a shared passive variable. This
56 -- procedure constructs and inserts the read and assignment procedures
57 -- for the shared memory variable. See System.Shared_Storage for a full
58 -- description of these procedures and how they are used.