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Diffstat (limited to 'gcc-4.4.3/gcc/ada/s-finimp.ads')
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diff --git a/gcc-4.4.3/gcc/ada/s-finimp.ads b/gcc-4.4.3/gcc/ada/s-finimp.ads deleted file mode 100644 index bcea6f381..000000000 --- a/gcc-4.4.3/gcc/ada/s-finimp.ads +++ /dev/null @@ -1,158 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- S Y S T E M . F I N A L I Z A T I O N _ I M P L E M E N T A T I O N -- --- -- --- S p e c -- --- -- --- Copyright (C) 1992-2009, 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. -- --- -- --- As a special exception under Section 7 of GPL version 3, you are granted -- --- additional permissions described in the GCC Runtime Library Exception, -- --- version 3.1, as published by the Free Software Foundation. -- --- -- --- You should have received a copy of the GNU General Public License and -- --- a copy of the GCC Runtime Library Exception along with this program; -- --- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- --- <http://www.gnu.org/licenses/>. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - -with Ada.Unchecked_Conversion; - -with System.Storage_Elements; -with System.Finalization_Root; - -package System.Finalization_Implementation is - pragma Elaborate_Body; - - package SSE renames System.Storage_Elements; - package SFR renames System.Finalization_Root; - - ------------------------------------------------ - -- Finalization Management Abstract Interface -- - ------------------------------------------------ - - function To_Finalizable_Ptr is new Ada.Unchecked_Conversion - (Source => System.Address, Target => SFR.Finalizable_Ptr); - - Collection_Finalization_Started : constant SFR.Finalizable_Ptr := - To_Finalizable_Ptr (SSE.To_Address (1)); - -- This is used to implement the rule in RM 4.8(10.2/2) that requires an - -- allocator to raise Program_Error if the collection finalization has - -- already started. See also Ada.Finalization.List_Controller. Finalize on - -- List_Controller first sets the list to Collection_Finalization_Started, - -- to indicate that finalization has started. An allocator will call - -- Attach_To_Final_List, which checks for the special value and raises - -- Program_Error if appropriate. The Collection_Finalization_Started value - -- must be different from 'Access of any finalizable object, and different - -- from null. See AI-280. - - Global_Final_List : SFR.Finalizable_Ptr; - -- This list stores the controlled objects defined in library-level - -- packages. They will be finalized after the main program completion. - - procedure Finalize_Global_List; - -- The procedure to be called in order to finalize the global list - - procedure Attach_To_Final_List - (L : in out SFR.Finalizable_Ptr; - Obj : in out SFR.Finalizable; - Nb_Link : Short_Short_Integer); - -- Attach finalizable object Obj to the linked list L. Nb_Link controls the - -- number of link of the linked_list, and is one of: 0 for no attachment, 1 - -- for simple linked lists or 2 for doubly linked lists or even 3 for a - -- simple attachment of a whole array of elements. Attachment to a simply - -- linked list is not protected against concurrent access and should only - -- be used in contexts where it doesn't matter, such as for objects - -- allocated on the stack. In the case of an attachment on a doubly linked - -- list, L must not be null and Obj will be inserted AFTER the first - -- element and the attachment is protected against concurrent call. - -- Typically used to attach to a dynamically allocated object to a - -- List_Controller (whose first element is always a dummy element) - - type Finalizable_Ptr_Ptr is access all SFR.Finalizable_Ptr; - -- A pointer to a finalization list. This is used as the type of the extra - -- implicit formal which are passed to build-in-place functions that return - -- controlled types (see Sem_Ch6). That extra formal is then passed on to - -- Move_Final_List (below). - - procedure Move_Final_List - (From : in out SFR.Finalizable_Ptr; - To : Finalizable_Ptr_Ptr); - -- Move all objects on From list to To list. This is used to implement - -- build-in-place function returns. The return object is initially placed - -- on a finalization list local to the return statement, in case the - -- return statement is left prematurely (due to raising an exception, - -- being aborted, or a goto or exit statement). Once the return statement - -- has completed successfully, Move_Final_List is called to move the - -- return object to the caller's finalization list. - - procedure Finalize_List (L : SFR.Finalizable_Ptr); - -- Call Finalize on each element of the list L - - procedure Finalize_One (Obj : in out SFR.Finalizable); - -- Call Finalize on Obj and remove its final list - - --------------------- - -- Deep Procedures -- - --------------------- - - procedure Deep_Tag_Attach - (L : in out SFR.Finalizable_Ptr; - A : System.Address; - B : Short_Short_Integer); - -- Generic attachment for tagged objects with controlled components. - -- A is the address of the object, L the finalization list when it needs - -- to be attached and B the attachment level (see Attach_To_Final_List). - - ----------------------------- - -- Record Controller Types -- - ----------------------------- - - -- Definition of the types of the controller component that is included - -- in records containing controlled components. This controller is - -- attached to the finalization chain of the upper-level and carries - -- the pointer of the finalization chain for the lower level. - - type Limited_Record_Controller is new SFR.Root_Controlled with record - F : SFR.Finalizable_Ptr; - end record; - - procedure Initialize (Object : in out Limited_Record_Controller); - -- Does nothing currently - - procedure Finalize (Object : in out Limited_Record_Controller); - -- Finalize the controlled components of the enclosing record by following - -- the list starting at Object.F. - - type Record_Controller is - new Limited_Record_Controller with record - My_Address : System.Address; - end record; - - procedure Initialize (Object : in out Record_Controller); - -- Initialize the field My_Address to the Object'Address - - procedure Adjust (Object : in out Record_Controller); - -- Adjust the components and their finalization pointers by subtracting by - -- the offset of the target and the source addresses of the assignment. - - -- Inherit Finalize from Limited_Record_Controller - - procedure Detach_From_Final_List (Obj : in out SFR.Finalizable); - -- Remove the specified object from its Final list, which must be a doubly - -- linked list. - -end System.Finalization_Implementation; |