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-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- E X P _ S M E M --
--- --
--- S p e c --
--- --
--- Copyright (C) 1998-2008, 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- --
--- ware Foundation; either version 3, 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 --
--- Public License distributed with GNAT; see file COPYING3. If not, go to --
--- http://www.gnu.org/licenses for a complete copy of the license. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- This package contains routines involved in the required expansions for
--- handling shared memory accesses for variables in Shared_Passive packages.
-
--- See detailed documentation in System.Shared_Storage spec for a full
--- description of the approach that is taken for handling distributed
--- shared memory. This expansion unit in the compiler is responsible
--- for generating the calls to routines in System.Shared_Storage.
-
-with Types; use Types;
-package Exp_Smem is
-
- procedure Expand_Shared_Passive_Variable (N : Node_Id);
- -- N is the identifier for a shared passive variable. This routine is
- -- responsible for determining if this is an assigned to N, or a
- -- reference to N, and generating the required calls to the shared
- -- memory read/write procedures.
-
- procedure Add_Shared_Var_Lock_Procs (N : Node_Id);
- -- The argument is a protected subprogram call, before it is rewritten
- -- by Exp_Ch9.Build_Protected_Subprogram_Call. This routine, which is
- -- called only in the case of an external call to a protected object
- -- that has Is_Shared_Passive set, deals with installing the required
- -- global lock calls for this case. It also generates the necessary
- -- read/write calls for the protected object within the lock region.
-
- function Make_Shared_Var_Procs (N : Node_Id) return Node_Id;
- -- N is the node for the declaration of a shared passive variable.
- -- This procedure constructs an instantiation of
- -- System.Shared_Storage.Shared_Var_Procs that contains the read and
- -- assignment procedures for the shared memory variable.
- -- See System.Shared_Storage for a full description of these procedures
- -- and how they are used. The last inserted node is returned.
-
-end Exp_Smem;