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Diffstat (limited to 'gcc-4.2.1/gcc/ada/exp_smem.ads')
-rw-r--r-- | gcc-4.2.1/gcc/ada/exp_smem.ads | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/gcc-4.2.1/gcc/ada/exp_smem.ads b/gcc-4.2.1/gcc/ada/exp_smem.ads new file mode 100644 index 000000000..75aa548b9 --- /dev/null +++ b/gcc-4.2.1/gcc/ada/exp_smem.ads @@ -0,0 +1,58 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- E X P _ S M E M -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1998-2000, 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 2, 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 COPYING. If not, write -- +-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- +-- Boston, MA 02110-1301, USA. -- +-- -- +-- 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. + + procedure Make_Shared_Var_Procs (N : Node_Id); + -- N is the node for the declaration of a shared passive variable. This + -- procedure constructs and inserts 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. + +end Exp_Smem; |