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61 lines
3.6 KiB
Ada
61 lines
3.6 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- E X P _ S M E M --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1998-2022, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING3. If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This package contains routines involved in the required expansions for
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-- handling shared memory accesses for variables in Shared_Passive packages.
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-- See detailed documentation in System.Shared_Storage spec for a full
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-- description of the approach that is taken for handling distributed
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-- shared memory. This expansion unit in the compiler is responsible
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-- for generating the calls to routines in System.Shared_Storage.
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with Types; use Types;
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package Exp_Smem is
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procedure Expand_Shared_Passive_Variable (N : Node_Id);
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-- N is the identifier for a shared passive variable. This routine is
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-- responsible for determining if this is an assigned to N, or a
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-- reference to N, and generating the required calls to the shared
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-- memory read/write procedures.
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procedure Add_Shared_Var_Lock_Procs (N : Node_Id);
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-- The argument is a protected subprogram call, before it is rewritten
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-- by Exp_Ch9.Build_Protected_Subprogram_Call. This routine, which is
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-- called only in the case of an external call to a protected object
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-- that has Is_Shared_Passive set, deals with installing a transient scope
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-- and acquiring the appropriate global lock calls for this case. It also
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-- generates the necessary read/write calls for the protected object within
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-- the lock region.
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function Make_Shared_Var_Procs (N : Node_Id) return Node_Id;
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-- N is the node for the declaration of a shared passive variable.
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-- This procedure constructs an instantiation of
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-- System.Shared_Storage.Shared_Var_Procs that contains the read and
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-- assignment procedures for the shared memory variable.
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-- See System.Shared_Storage for a full description of these procedures
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-- and how they are used. The last inserted node is returned.
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end Exp_Smem;
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