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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;