-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2004 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2007, 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- --
-- 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, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- 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. --
-- Expand routines for chapter 9 constructs
+with Namet; use Namet;
with Types; use Types;
package Exp_Ch9 is
+ type Subprogram_Protection_Mode is
+ (Dispatching_Mode,
+ Protected_Mode,
+ Unprotected_Mode);
+ -- This type is used to distinguish the different protection modes of a
+ -- protected subprogram.
+
procedure Add_Discriminal_Declarations
(Decls : List_Id;
Typ : Entity_Id;
-- (other than allocators to tasks) this routine ensures that an activation
-- chain has been declared in the appropriate scope, building the required
-- declaration for the chain variable if not. The name of this variable
- -- is always _Chain and it is accessed by name. This procedure also adds
- -- an appropriate call to Activate_Tasks to activate the tasks for this
- -- activation chain. It does not however deal with the call needed in the
- -- case of allocators to Expunge_Unactivated_Tasks, this is separately
- -- handled in the Expand_Task_Allocator routine.
+ -- is always _Chain and it is accessed by name.
function Build_Call_With_Task (N : Node_Id; E : Entity_Id) return Node_Id;
-- N is a node representing the name of a task or an access to a task.
-- Task_Id of the associated task as the parameter. The caller is
-- responsible for analyzing and resolving the resulting tree.
+ function Build_Corresponding_Record
+ (N : Node_Id;
+ Ctyp : Node_Id;
+ Loc : Source_Ptr) return Node_Id;
+ -- Common to tasks and protected types. Copy discriminant specifications,
+ -- build record declaration. N is the type declaration, Ctyp is the
+ -- concurrent entity (task type or protected type).
+
procedure Build_Master_Entity (E : Entity_Id);
-- Given an entity E for the declaration of an object containing tasks
-- or of a type declaration for an allocator whose designated type is a
-- declarative part.
function Build_Protected_Sub_Specification
- (N : Node_Id;
- Prottyp : Entity_Id;
- Unprotected : Boolean := False)
- return Node_Id;
+ (N : Node_Id;
+ Prottyp : Entity_Id;
+ Mode : Subprogram_Protection_Mode) return Node_Id;
-- Build specification for protected subprogram. This is called when
-- expanding a protected type, and also when expanding the declaration for
-- an Access_To_Protected_Subprogram type. In the latter case, Prottyp is
-- routine to make sure Complete_Master is called on exit).
procedure Expand_Access_Protected_Subprogram_Type (N : Node_Id);
- -- Build Equivalent_Type for an Access_to_protected_Subprogram.
+ -- Build Equivalent_Type for an Access_to_protected_Subprogram
procedure Expand_Accept_Declarations (N : Node_Id; Ent : Entity_Id);
-- Expand declarations required for accept statement. See bodies of
procedure Expand_N_Protected_Body (N : Node_Id);
procedure Expand_N_Protected_Type_Declaration (N : Node_Id);
- -- Expands protected type declarations. This results, among
- -- other things, in the declaration of a record type for the
- -- representation of protected objects and (if there are entries)
- -- in an entry service procedure. The Protection value used by
- -- the GNARL to control the object will always be the first
- -- field of the record, and the entry service procedure spec
- -- (if it exists) will always immediately follow the record
- -- declaration. This allows these two nodes to be found from
- -- the type using Corresponding_Record, without benefit of
- -- of further attributes.
+ -- Expands protected type declarations. This results, among other things,
+ -- in the declaration of a record type for the representation of protected
+ -- objects and (if there are entries) in an entry service procedure. The
+ -- Protection value used by the GNARL to control the object will always be
+ -- the first field of the record, and the entry service procedure spec (if
+ -- it exists) will always immediately follow the record declaration. This
+ -- allows these two nodes to be found from the type, without benefit of
+ -- further attributes, using Corresponding_Record.
procedure Expand_N_Requeue_Statement (N : Node_Id);
procedure Expand_N_Selective_Accept (N : Node_Id);
-- protected type.
procedure Set_Privals
- (Dec : Node_Id;
- Op : Node_Id;
- Loc : Source_Ptr);
+ (Dec : Node_Id;
+ Op : Node_Id;
+ Loc : Source_Ptr;
+ After_Barrier : Boolean := False);
-- Associates a new set of privals (placeholders for later access to
-- private components of protected objects) with the private object
-- declarations of a protected object. These will be used to expand
-- the references to private objects in the next protected
-- subprogram or entry body to be expanded.
+ --
+ -- The flag After_Barrier indicates whether this is called after building
+ -- the barrier function for an entry body. This flag determines whether
+ -- the privals should have source names (which simplifies debugging) or
+ -- internally generated names. Entry barriers contain no debuggable code,
+ -- and there may be visibility conflicts between an entry index and a
+ -- a prival, so privals for barrier function have internal names.
end Exp_Ch9;
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