------------------------------------------------------------------------------
-- --
--- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
+-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- SYSTEM.TASK_PRIMITIVES.OPERATIONS.REGISTER_FOREIGN_THREAD --
-- --
--- B o d y --
+-- B o d y --
-- --
--- Copyright (C) 2002-2003, Free Software Foundation, Inc. --
+-- Copyright (C) 2002-2011, Free Software Foundation, Inc. --
-- --
-- GNARL 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. GNARL is distributed in the hope that it will be useful, but WITH- --
+-- 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 GNARL; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- 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/>. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
with System.Soft_Links;
-- used to initialize TSD for a C thread, in function Self
+with System.Multiprocessors;
+
separate (System.Task_Primitives.Operations)
-function Register_Foreign_Thread (Thread : Thread_Id) return Task_ID is
+function Register_Foreign_Thread (Thread : Thread_Id) return Task_Id is
Local_ATCB : aliased Ada_Task_Control_Block (0);
- Self_Id : Task_ID;
+ Self_Id : Task_Id;
Succeeded : Boolean;
- use type Interfaces.C.unsigned;
-
begin
-- This section is tricky. We must not call anything that might require
-- an ATCB, until the new ATCB is in place. In order to get an ATCB
-- immediately, we fake one, so that it is then possible to e.g allocate
-- memory (which might require accessing self).
- -- Record this as the Task_ID for the thread
+ -- Record this as the Task_Id for the thread
Local_ATCB.Common.LL.Thread := Thread;
Local_ATCB.Common.Current_Priority := System.Priority'First;
-- Finish initialization
+ Lock_RTS;
System.Tasking.Initialize_ATCB
(Self_Id, null, Null_Address, Null_Task,
Foreign_Task_Elaborated'Access,
- System.Priority'First, Task_Info.Unspecified_Task_Info, 0, Self_Id,
- Succeeded);
+ System.Priority'First, System.Multiprocessors.Not_A_Specific_CPU, null,
+ Task_Info.Unspecified_Task_Info, 0, Self_Id, Succeeded);
+ Unlock_RTS;
pragma Assert (Succeeded);
Self_Id.Master_of_Task := 0;
Self_Id.Common.State := Runnable;
Self_Id.Awake_Count := 1;
+ Self_Id.Common.Task_Image (1 .. 14) := "foreign thread";
+ Self_Id.Common.Task_Image_Len := 14;
+
-- Since this is not an ordinary Ada task, we will start out undeferred
Self_Id.Deferral_Level := 0;
+ -- We do not provide an alternate stack for foreign threads
+
+ Self_Id.Common.Task_Alternate_Stack := Null_Address;
+
System.Soft_Links.Create_TSD (Self_Id.Common.Compiler_Data);
-- ???
- -- The following call is commented out to avoid dependence on
- -- the System.Tasking.Initialization package.
- -- It seems that if we want Ada.Task_Attributes to work correctly
- -- for C threads we will need to raise the visibility of this soft
- -- link to System.Soft_Links.
- -- We are putting that off until this new functionality is otherwise
- -- stable.
+ -- The following call is commented out to avoid dependence on the
+ -- System.Tasking.Initialization package. It seems that if we want
+ -- Ada.Task_Attributes to work correctly for C threads we will need to
+ -- raise the visibility of this soft link to System.Soft_Links. We are
+ -- putting that off until this new functionality is otherwise stable.
-- System.Tasking.Initialization.Initialize_Attributes_Link.all (T);
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