ocarina-backends-pok_c-main.adb 68.2 KB
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------------------------------------------------------------------------------
--                                                                          --
--                           OCARINA COMPONENTS                             --
--                                                                          --
--          O C A R I N A . B A C K E N D S . P O K _ C . M A I N           --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
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--    Copyright (C) 2008-2009 Telecom ParisTech, 2010-2014 ESA & ISAE.      --
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--                                                                          --
-- Ocarina  is free software;  you  can  redistribute  it and/or  modify    --
-- it under terms of the GNU General Public License as published by the     --
-- Free Software Foundation; either version 2, or (at your option) any      --
-- later version. Ocarina is distributed  in  the  hope  that it will be    --
-- useful, but WITHOUT 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 Ocarina; see file COPYING.   --
-- If not, write to the Free Software Foundation, 51 Franklin Street, Fifth --
-- Floor, Boston, MA 02111-1301, USA.                                       --
--                                                                          --
-- 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.                                       --
--                                                                          --
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--                 Ocarina is maintained by the TASTE project               --
--                      (taste-users@lists.tuxfamily.org)                   --
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--                                                                          --
------------------------------------------------------------------------------

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with Ocarina.Namet;
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with Ocarina.ME_AADL;
with Ocarina.ME_AADL.AADL_Instances.Nodes;
with Ocarina.ME_AADL.AADL_Instances.Nutils;
with Ocarina.ME_AADL.AADL_Instances.Entities;
with Ocarina.Backends.Messages;
with Ocarina.Backends.Utils;
with Ocarina.Backends.Properties;
with Ocarina.Backends.C_Values;
with Ocarina.Backends.C_Tree.Nutils;
with Ocarina.Backends.C_Tree.Nodes;
with Ocarina.Backends.POK_C.Runtime;
with Ocarina.Backends.C_Common.Mapping;

with Ocarina.Instances.Queries;

package body Ocarina.Backends.POK_C.Main is

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   use Ocarina.Namet;
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   use Ocarina.ME_AADL;
   use Ocarina.ME_AADL.AADL_Instances.Nodes;
   use Ocarina.ME_AADL.AADL_Instances.Entities;
   use Ocarina.Backends.Messages;
   use Ocarina.Backends.Properties;
   use Ocarina.Backends.Utils;
   use Ocarina.Backends.C_Values;
   use Ocarina.Backends.C_Tree.Nutils;
   use Ocarina.Backends.POK_C.Runtime;
   use Ocarina.Backends.C_Common.Mapping;

   use Ocarina.Instances.Queries;

   package AIN renames Ocarina.ME_AADL.AADL_Instances.Nodes;
   package AINU renames Ocarina.ME_AADL.AADL_Instances.Nutils;
   package CTN renames Ocarina.Backends.C_Tree.Nodes;
   package CTU renames Ocarina.Backends.C_Tree.Nutils;
   package CV renames Ocarina.Backends.C_Values;

   -----------------
   -- Source_File --
   -----------------

   package body Source_File is

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      Tattr                 : Node_Id;
      Main_Function         : Node_Id;
      Statements            : List_Id;
      Init_Function         : Node_Id            := No_Node;
      Thread_Id             : Unsigned_Long_Long := 0;
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      Process_Variable_Type : Node_Id;
      Process_Variable_Name : Node_Id;

      Error_Switch_Alternatives : List_Id;

      Use_Error_Handling : Boolean := False;

      Current_Device : Node_Id := No_Node;

      procedure Visit_Architecture_Instance (E : Node_Id);
      procedure Visit_Component_Instance (E : Node_Id);
      procedure Visit_System_Instance (E : Node_Id);
      procedure Visit_Process_Instance
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        (E                       : Node_Id;
         Real_Process            : Boolean := True;
         Corresponding_Component : Node_Id := No_Node);
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      procedure Visit_Device_Instance (E : Node_Id);
      procedure Visit_Processor_Instance (E : Node_Id);
      procedure Visit_Virtual_Processor_Instance (E : Node_Id);
      procedure Visit_Thread_Instance (E : Node_Id);

      procedure Setup_Thread (E : Node_Id);

      function Map_Queueing_Policy (Port : Node_Id) return Node_Id;

      function Map_Queueing_Policy (Port : Node_Id) return Node_Id is
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         ARINC653_Discipline : constant ARINC653_Queuing_Discipline :=
           Get_ARINC653_Queuing_Discipline (Port);
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      begin
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         if ARINC653_Discipline /= Invalid
           and then ARINC653_Discipline = Priority_Based
         then
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            if Use_ARINC653_API then
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               return RE (RE_Priority);
            else
               return RE (RE_Pok_Port_Queueing_Discipline_Fifo);
            end if;
         end if;

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         if Use_ARINC653_API then
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            return RE (RE_Fifo);
         else
            return RE (RE_Pok_Port_Queueing_Discipline_Fifo);
         end if;
      end Map_Queueing_Policy;

      ------------------
      -- Setup_Thread --
      ------------------

      procedure Setup_Thread (E : Node_Id) is
         Parameters   : List_Id;
         N            : Node_Id;
         S            : constant Node_Id := Parent_Subcomponent (E);
         Member_Value : Node_Id;
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         Stack_Size   : Unsigned_Long_Long;
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      begin
         --  Initializes thread attributes.
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         if Use_ARINC653_API = False then
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            N :=
              POK_Make_Function_Call_With_Assert
                (RF (RE_Pok_Thread_Attr_Init),
                 Make_List_Id (Make_Variable_Address (Copy_Node (Tattr))));
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            Append_Node_To_List (N, Statements);

            POK_Add_Return_Assertion (Statements);
         end if;

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         --  Make strcpy(tattr.NAME, "prname")

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         if POK_Flavor = DEOS or else POK_Flavor = VXWORKS then
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            N :=
              Make_Call_Profile
                (Make_Defining_Identifier
                  (Get_String_Name ("strcpy")),
                 Make_List_Id (
                  Make_Member_Designator
                     (RE (RE_Name),
                      Copy_Node (Tattr)),
                  Make_Literal
                    (CV.New_Pointed_Char_Value
                     (Name (Identifier (S))))));
            Append_Node_To_List (N, Statements);
         end if;

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         --  Make tattr.entry = entrypoint

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         if Use_ARINC653_API then
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            N :=
              Make_Expression
                (Left_Expr =>
                   Make_Member_Designator
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                     (RE (RE_Entry_Point),
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                      Copy_Node (Tattr)),
                 Operator   => Op_Equal,
                 Right_Expr =>
                   Copy_Node
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                     (CTN.Defining_Identifier
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                        (CTN.Job_Node (Backend_Node (Identifier (S))))));
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         else
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            N :=
              Make_Expression
                (Left_Expr =>
                   Make_Member_Designator (RE (RE_Entry), Copy_Node (Tattr)),
                 Operator   => Op_Equal,
                 Right_Expr =>
                   Copy_Node
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                     (CTN.Defining_Identifier
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                        (CTN.Job_Node (Backend_Node (Identifier (S))))));
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         end if;

         Append_Node_To_List (N, Statements);

         --  Add priority to tattr, tattr.priority = threadpriority

         if Get_Thread_Priority (E) /= 0 then
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            N := Make_Literal (New_Int_Value (Get_Thread_Priority (E), 1, 10));
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            if Use_ARINC653_API then
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               N :=
                 Make_Expression
                   (Left_Expr =>
                      Make_Member_Designator
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                        (RE (RE_Base_Priority),
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                         Copy_Node (Tattr)),
                    Operator   => Op_Equal,
                    Right_Expr => N);
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            else
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               N :=
                 Make_Expression
                   (Left_Expr =>
                      Make_Member_Designator
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                        (Make_Defining_Identifier (MN (M_Priority)),
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                         Copy_Node (Tattr)),
                    Operator   => Op_Equal,
                    Right_Expr => N);
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            end if;

            Append_Node_To_List (N, Statements);
         end if;

         if Get_Thread_Deadline (E) /= Null_Time then
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            if POK_Flavor = ARINC653 then
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               Member_Value :=
                 Map_Time_To_Millisecond (Get_Thread_Deadline (E));
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            elsif POK_Flavor = POK then
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               Member_Value := Map_Time (Get_Thread_Deadline (E));
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            else
               Member_Value := No_Node;
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            end if;

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            if Member_Value /= No_Node then
               N :=
                 Make_Expression
                   (Left_Expr =>
                      Make_Member_Designator
                        (RE (RE_Deadline),
                         Copy_Node (Tattr)),
                    Operator   => Op_Equal,
                    Right_Expr => Member_Value);
               Append_Node_To_List (N, Statements);
            end if;
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         else
            Display_Error ("Deadline not specified", Fatal => False);
         end if;

         if Get_Thread_Period (E) /= Null_Time then
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            if Use_ARINC653_API then
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               if POK_Flavor = POK then
                  Member_Value := Map_Time_To_Millisecond
                                    (Get_Thread_Period (E));
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               elsif POK_Flavor = DEOS or else POK_Flavor = VXWORKS then
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                  Member_Value := Map_Time_To_Nanosecond
                                    (Get_Thread_Period (E));
               end if;
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            else
               Member_Value := Map_Time (Get_Thread_Period (E));
            end if;

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            if Member_Value /= No_Node then
               N :=
                 Make_Expression
                   (Left_Expr =>
                      Make_Member_Designator
                        (RE (RE_Period), Copy_Node (Tattr)),
                    Operator   => Op_Equal,
                    Right_Expr => Member_Value);
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               Append_Node_To_List (N, Statements);
            end if;
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         else
            Display_Error ("Period not specified", Fatal => True);
         end if;

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         --
         --  Set up the Stack Size
         --  On most system, the default is 4096. So, we set
         --  up 4096 if not explicitly declared. We use
         --  The AADL property Stack_Size if declared.
         --
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         Stack_Size := 4096;

         if Get_Thread_Stack_Size (E) /= Null_Size then
            Stack_Size := To_Bytes (Get_Thread_Stack_Size (E));
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         end if;
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         N :=
           Make_Expression
             (Left_Expr =>
                Make_Member_Designator
                  (RE (RE_Stack_Size),
                   Copy_Node (Tattr)),
              Operator   => Op_Equal,
              Right_Expr =>
                Make_Literal
                  (New_Int_Value (Stack_Size,
                                 1,
                                 10)));
         Append_Node_To_List (N, Statements);
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         declare
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            TA       : constant Time_Array := Get_Execution_Time (E);
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            Capacity : Node_Id;
         begin
            if TA /= Empty_Time_Array then
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               if Use_ARINC653_API then
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                  if POK_Flavor = ARINC653 then
                     Capacity := Map_Time_To_Millisecond (TA (1));
                  elsif POK_Flavor = DEOS then
                     Capacity := Map_Time_To_Nanosecond (TA (1));
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                  elsif POK_Flavor = VXWORKS then
                     Capacity := Map_Time_To_Nanosecond (TA (1));
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                  else
                     Capacity := No_Node;
                  end if;
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               else
                  Capacity := Map_Time (TA (1));
               end if;
            else
               Display_Error
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                 ("Compute execution time not declared",
                  Fatal => False);
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               --  By default, we allocate 1 ms for thread execution.
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               Capacity :=
                 CTU.Make_Literal (CV.New_Int_Value (Thread_Id, 1, 10));
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            end if;
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            N :=
              Make_Expression
                (Left_Expr =>
                   Make_Member_Designator
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                     (RE (RE_Time_Capacity),
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                      Copy_Node (Tattr)),
                 Operator   => Op_Equal,
                 Right_Expr => Capacity);
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            Append_Node_To_List (N, Statements);
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         end;

         --  Add tid and other stuff to the parameters and call
         --  pok_thread_create

         Parameters := New_List (CTN.K_Parameter_List);

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         if Use_ARINC653_API then
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            Append_Node_To_List
              (Make_Variable_Address (Copy_Node (Tattr)),
               Parameters);

            Append_Node_To_List
              (Make_Variable_Address
                 (Make_Array_Value
                    (Copy_Node (Process_Variable_Name),
                     CTU.Make_Literal (CV.New_Int_Value (Thread_Id, 1, 10)))),
               Parameters);
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            Add_Return_Variable_In_Parameters (Parameters);
         else
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            Append_Node_To_List
              (Make_Variable_Address
                 (Make_Array_Value
                    (Copy_Node (Process_Variable_Name),
                     CTU.Make_Literal (CV.New_Int_Value (Thread_Id, 1, 10)))),
               Parameters);
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            Append_Node_To_List
              (Make_Variable_Address (Copy_Node (Tattr)),
               Parameters);
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         end if;

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         if Use_ARINC653_API then
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            Append_Node_To_List
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              (POK_Make_Function_Call_With_Assert
                 (RF (RE_Create_Process),
                  Parameters),
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               Statements);
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            Parameters := New_List (CTN.K_Parameter_List);
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            Append_Node_To_List
              (Make_Array_Value
                 (Copy_Node (Process_Variable_Name),
                  CTU.Make_Literal (CV.New_Int_Value (Thread_Id, 1, 10))),
               Parameters);
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            Add_Return_Variable_In_Parameters (Parameters);
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            Append_Node_To_List
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              (POK_Make_Function_Call_With_Assert (RF (RE_Start), Parameters),
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               Statements);
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         else
            Append_Node_To_List
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              (POK_Make_Function_Call_With_Assert
                 (RF (RE_Pok_Thread_Create),
                  Parameters),
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               Statements);
         end if;

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         N :=
           Message_Comment
             ("This thread was mapped from a thread component contained" &
              "in this process. The function it executes is also generated" &
              "in the file activity.c.");
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         POK_Add_Return_Assertion (Statements);

         CTU.Append_Node_To_List (N, Statements);
      end Setup_Thread;

      -----------
      -- Visit --
      -----------

      procedure Visit (E : Node_Id) is
      begin
         case Kind (E) is
            when K_Architecture_Instance =>
               Visit_Architecture_Instance (E);

            when K_Component_Instance =>
               Visit_Component_Instance (E);

            when others =>
               null;
         end case;
      end Visit;

      ---------------------------------
      -- Visit_Architecture_Instance --
      ---------------------------------

      procedure Visit_Architecture_Instance (E : Node_Id) is
      begin
         Visit (Root_System (E));
      end Visit_Architecture_Instance;

      ------------------------------
      -- Visit_Component_Instance --
      ------------------------------

      procedure Visit_Component_Instance (E : Node_Id) is
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         Category : constant Component_Category :=
           Get_Category_Of_Component (E);
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      begin
         case Category is
            when CC_System =>
               Visit_System_Instance (E);

            when CC_Process =>
               Visit_Process_Instance (E);

            when CC_Device =>
               Visit_Device_Instance (E);

            when CC_Processor =>
               Visit_Processor_Instance (E);

            when CC_Virtual_Processor =>
               Visit_Virtual_Processor_Instance (E);

            when CC_Thread =>
               Visit_Thread_Instance (E);

            when others =>
               null;
         end case;
      end Visit_Component_Instance;

      ----------------------------
      -- Visit_Process_Instance --
      ----------------------------

      procedure Visit_Process_Instance
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        (E                       : Node_Id;
         Real_Process            : Boolean := True;
         Corresponding_Component : Node_Id := No_Node)
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      is
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         U                : Node_Id;
         P                : Node_Id;
         N                : Node_Id;
         S                : Node_Id;
         Spec             : Node_Id;
         Declarations     : List_Id := New_List (CTN.K_Declaration_List);
         Call_Parameters  : List_Id;
         Called_Function  : Node_Id;
         Used_Type        : Node_Id;
         Used_Member      : Node_Id;
         While_Statements : constant List_Id :=
           New_List (CTN.K_Statement_List);
         Shared_Data             : Node_Id;
         Function_Call           : Node_Id;
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         Communicating_Component : Node_Id;

         procedure Setup_In_Ports;
         procedure Setup_Out_Ports;

         --------------------
         -- Setup_In_Ports --
         --------------------

         procedure Setup_In_Ports is
            F               : Node_Id;
            Called_Function : Node_Id;
            Added_Parameter : Node_Id;
            Variable_Type   : Node_Id;
         begin
            if AINU.Is_Empty (Features (Communicating_Component)) then
               return;
            end if;

            F := First_Node (Features (Communicating_Component));

            while Present (F) loop
               Call_Parameters := New_List (CTN.K_Parameter_List);

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               if Kind (F) = K_Port_Spec_Instance
                 and then Is_In (F)
                 and then not Is_Out (F)
                 and then Get_Connection_Pattern (F) = Inter_Process
                 and then not Is_Virtual (Get_Port_By_Name (F, Current_Device))
               then
                  if AIN.Is_Data (F) and then Is_Event (F) then
                     Append_Node_To_List
                       (Make_Literal
                          (CV.New_Pointed_Char_Value (Map_Port_Name (F))),
                        Call_Parameters);

                     if POK_Flavor = POK then
                        N := Map_Queue_Size_With_Data (F);
                        Append_Node_To_List (N, Call_Parameters);
                     else

                        --  Map the size

                        N := Get_Data_Size (Corresponding_Instance (F));

                        Append_Node_To_List (N, Call_Parameters);

                        --  Map the queue size

                        N := Map_Queue_Size (F);
                        Append_Node_To_List (N, Call_Parameters);
                     end if;

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                     if Use_ARINC653_API then
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                        Added_Parameter := RE (RE_Destination);
                     else
                        Added_Parameter := RE (RE_Pok_Port_Direction_In);
                     end if;

                     Append_Node_To_List (Added_Parameter, Call_Parameters);

                     Added_Parameter := Map_Queueing_Policy (F);

                     Append_Node_To_List (Added_Parameter, Call_Parameters);

                     Append_Node_To_List
                       (Make_Variable_Address
                          (Make_Defining_Identifier (Map_Port_Var (F))),
                        Call_Parameters);

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                     if Use_ARINC653_API then
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                        Append_Node_To_List
                          (Make_Variable_Address
                             (Make_Defining_Identifier (VN (V_Ret))),
                           Call_Parameters);

                        Called_Function := RF (RE_Create_Queuing_Port);
                     else
                        Called_Function := RF (RE_Pok_Port_Queueing_Create);
                     end if;

                     Append_Node_To_List
                       (POK_Make_Function_Call_With_Assert
                          (Called_Function,
                           Call_Parameters),
                        Statements);

                     POK_Add_Return_Assertion (Statements);

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                     if Use_ARINC653_API then
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                        Variable_Type := RE (RE_Queuing_Port_Id_Type);
                     else
                        Variable_Type := RE (RE_Uint8_T);
                     end if;

                     Append_Node_To_List
                       (Make_Variable_Declaration
                          (Defining_Identifier =>
                             (Make_Defining_Identifier (Map_Port_Var (F))),
                           Used_Type => Variable_Type),
                        CTN.Declarations (Current_File));

                     N :=
                       Message_Comment
                         ("This queueing port was mapped from an in" &
                          "event data port contained in the process. It" &
                          "is used for inter-partition communication.");

                     CTU.Append_Node_To_List (N, Statements);
                  elsif AIN.Is_Data (F) and then not Is_Event (F) then
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                     --
                     --  Here, we have a sampling port.
                     --

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                     Append_Node_To_List
                       (Make_Literal
                          (CV.New_Pointed_Char_Value (Map_Port_Name (F))),
                        Call_Parameters);

                     if Current_Device = No_Node then
                        N := Get_Inter_Partition_Port_Size (F);

                        if Is_Using_Virtual_Bus (F) then
                           Add_Include (RH (RH_Protocols));
                           Add_Define_Deployment (RE (RE_Pok_Needs_Protocols));
                        end if;
                     else
                        N :=
                          Get_Inter_Partition_Port_Size
                            (Get_Port_By_Name (F, Current_Device));

                        if Is_Using_Virtual_Bus
                            (Get_Port_By_Name (F, Current_Device))
                        then
                           Add_Include (RH (RH_Protocols));
                           Add_Define_Deployment (RE (RE_Pok_Needs_Protocols));
                        end if;
                     end if;

                     Append_Node_To_List (N, Call_Parameters);

                     --  Map the port of the sampling port, take in
                     --  account potential virtual bus layers.

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                     if Use_ARINC653_API then
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                        Append_Node_To_List
                          (RE (RE_Destination),
                           Call_Parameters);
                     else
                        Append_Node_To_List
                          (RE (RE_Pok_Port_Direction_In),
                           Call_Parameters);
                     end if;

                     if Get_POK_Refresh_Time (F) /= Null_Time then
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                        if Use_ARINC653_API then
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                           N :=
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                             Map_Time_To_Nanosecond
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                               (Get_POK_Refresh_Time (F));
                        else
                           N := Map_Time (Get_POK_Refresh_Time (F));
                        end if;
                     else
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                        if POK_Flavor = DEOS
                           or else POK_Flavor = VXWORKS
                        then
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                           --
                           --  DeOS needs a value to refresh the port.
                           --

                           N := CTU.Make_Literal
                              (CV.New_Int_Value (1_000_000, 1, 10));
                        else
                           N := CTU.Make_Literal (CV.New_Int_Value (0, 1, 10));
                        end if;
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                     end if;
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                     Append_Node_To_List (N, Call_Parameters);

                     Append_Node_To_List
                       (Make_Variable_Address
                          (Make_Defining_Identifier (Map_Port_Var (F))),
                        Call_Parameters);

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                     if Use_ARINC653_API then
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                        Add_Return_Variable_In_Parameters (Call_Parameters);
                        Called_Function := RF (RE_Create_Sampling_Port);
                     else
                        Called_Function := RF (RE_Pok_Port_Sampling_Create);
                     end if;

                     Append_Node_To_List
                       (POK_Make_Function_Call_With_Assert
                          (Called_Function,
                           Call_Parameters),
                        Statements);

                     POK_Add_Return_Assertion (Statements);

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                     if Use_ARINC653_API then
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                        Variable_Type := RE (RE_Sampling_Port_Id_Type);
                     else
                        Variable_Type := RE (RE_Uint8_T);
                     end if;

                     Append_Node_To_List
                       (Make_Variable_Declaration
                          (Defining_Identifier =>
                             (Make_Defining_Identifier (Map_Port_Var (F))),
                           Used_Type => (Variable_Type)),
                        CTN.Declarations (Current_File));

                     N :=
                       Message_Comment
                         ("This sampling port was mapped from a in data" &
                          "port contained in the process. It is used" &
                          "for inter-partition communication.");

                     CTU.Append_Node_To_List (N, Statements);
                  end if;
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               end if;
               F := Next_Node (F);
            end loop;
         end Setup_In_Ports;

         ---------------------
         -- Setup_Out_Ports --
         ---------------------

         procedure Setup_Out_Ports is
            F               : Node_Id;
            Called_Function : Node_Id;
            Added_Parameter : Node_Id;
            Variable_Type   : Node_Id;
         begin

            Error_Switch_Alternatives := New_List (CTN.K_Alternatives_List);

            if AINU.Is_Empty (Features (Communicating_Component)) then
               return;
            end if;

            F := First_Node (Features (Communicating_Component));

            while Present (F) loop

               Call_Parameters := New_List (CTN.K_Parameter_List);

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               if Kind (F) = K_Port_Spec_Instance
                 and then Is_Out (F)
                 and then not Is_In (F)
                 and then Get_Connection_Pattern (F) = Inter_Process
                 and then not Is_Virtual (Get_Port_By_Name (F, Current_Device))
               then
                  if AIN.Is_Data (F) and then not Is_Event (F) then
                     Append_Node_To_List
                       (Make_Literal
                          (CV.New_Pointed_Char_Value (Map_Port_Name (F))),
                        Call_Parameters);

                     if Current_Device = No_Node then
                        N := Get_Inter_Partition_Port_Size (F);

                        if Is_Using_Virtual_Bus (F) then
                           Add_Include (RH (RH_Protocols));
                           Add_Define_Deployment (RE (RE_Pok_Needs_Protocols));
                        end if;
                     else
                        N :=
                          Get_Inter_Partition_Port_Size
                            (Get_Port_By_Name (F, Current_Device));

                        if Is_Using_Virtual_Bus
                            (Get_Port_By_Name (F, Current_Device))
                        then
                           Add_Include (RH (RH_Protocols));
                           Add_Define_Deployment (RE (RE_Pok_Needs_Protocols));
                        end if;
                     end if;

                     Append_Node_To_List (N, Call_Parameters);

                     --  Map the size of the port, take in account
                     --  potential virtual bus layers.

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                     if Use_ARINC653_API then
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                        Append_Node_To_List (RE (RE_Source), Call_Parameters);
                     else
                        Append_Node_To_List
                          (RE (RE_Pok_Port_Direction_Out),
                           Call_Parameters);
                     end if;

                     if Get_POK_Refresh_Time (F) /= Null_Time then

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                        if Use_ARINC653_API then
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                           N :=
                             Map_Time_To_Millisecond
                               (Get_POK_Refresh_Time (F));
                        else
                           N := Map_Time (Get_POK_Refresh_Time (F));
                        end if;

                     else
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                        if POK_Flavor = DEOS then

                           --
                           --  DeOS needs a value to refresh the port.
                           --

                           N := CTU.Make_Literal
                              (CV.New_Int_Value (1_000_000, 1, 10));
                        else
                           N := CTU.Make_Literal (CV.New_Int_Value (0, 1, 10));
                        end if;
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                     end if;

Julien's avatar
Julien committed
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                     if POK_Flavor = VXWORKS then
                        N := RE (RE_Infinite_Time_Value);
                     end if;

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                     Append_Node_To_List (N, Call_Parameters);

                     Append_Node_To_List
                       (Make_Variable_Address
                          (Make_Defining_Identifier (Map_Port_Var (F))),
                        Call_Parameters);

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                     if Use_ARINC653_API then
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                        Add_Return_Variable_In_Parameters (Call_Parameters);
                        Called_Function := RF (RE_Create_Sampling_Port);
                     else
                        Called_Function := RF (RE_Pok_Port_Sampling_Create);
                     end if;

                     N :=
                       POK_Make_Function_Call_With_Assert
                         (Called_Function,
                          Call_Parameters);
                     Append_Node_To_List (N, Statements);

                     POK_Add_Return_Assertion (Statements);

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                     if Use_ARINC653_API then
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                        Variable_Type := RE (RE_Sampling_Port_Id_Type);
                     else
                        Variable_Type := RE (RE_Uint8_T);
                     end if;

                     Append_Node_To_List
                       (Make_Variable_Declaration
                          (Defining_Identifier =>
                             (Make_Defining_Identifier (Map_Port_Var (F))),
                           Used_Type => (Variable_Type)),
                        CTN.Declarations (Current_File));

                     N :=
                       Message_Comment
                         ("This sampling port was mapped from an out" &
                          "data port contained in the process. It is" &
                          "used for inter-partition communication.");

                     CTU.Append_Node_To_List (N, Statements);
                  elsif AIN.Is_Data (F) and then Is_Event (F) then
                     Append_Node_To_List
                       (Make_Literal
                          (CV.New_Pointed_Char_Value (Map_Port_Name (F))),
                        Call_Parameters);

                     if POK_Flavor = POK then
                        N := Map_Queue_Size_With_Data (F);
                        Append_Node_To_List (N, Call_Parameters);
                     else
                        --  Map the size

                        N := Get_Data_Size (Corresponding_Instance (F));

                        Append_Node_To_List (N, Call_Parameters);

                        --  Map the queue size

                        N := Map_Queue_Size (F);
                        Append_Node_To_List (N, Call_Parameters);
                     end if;

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                     if Use_ARINC653_API then
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                        Added_Parameter := RE (RE_Source);
                     else
                        Added_Parameter := RE (RE_Pok_Port_Direction_Out);
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                     end if;
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                     Append_Node_To_List (Added_Parameter, Call_Parameters);

                     Added_Parameter := Map_Queueing_Policy (F);

                     Append_Node_To_List (Added_Parameter, Call_Parameters);

                     Append_Node_To_List
                       (Make_Variable_Address
                          (Make_Defining_Identifier (Map_Port_Var (F))),
                        Call_Parameters);

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                     if Use_ARINC653_API then
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                        Add_Return_Variable_In_Parameters (Call_Parameters);

                        Called_Function := RF (RE_Create_Queuing_Port);
                     else
                        Called_Function := RF (RE_Pok_Port_Queueing_Create);
                     end if;

                     N :=
                       POK_Make_Function_Call_With_Assert
                         (Called_Function,
                          Call_Parameters);

                     Append_Node_To_List (N, Statements);

                     POK_Add_Return_Assertion (Statements);

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                     if Use_ARINC653_API then
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                        Variable_Type := RE (RE_Queuing_Port_Id_Type);
                     else
                        Variable_Type := RE (RE_Uint8_T);
                     end if;

                     Append_Node_To_List
                       (Make_Variable_Declaration
                          (Defining_Identifier =>
                             (Make_Defining_Identifier (Map_Port_Var (F))),
                           Used_Type => (Variable_Type)),
                        CTN.Declarations (Current_File));

                     N :=
                       Message_Comment
                         ("This queueing port was mapped from an out " &
                          "event data port contained in the process. It" &
                          "is used for inter-partition communication.");

                     CTU.Append_Node_To_List (N, Statements);
                  end if;
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               end if;
               F := Next_Node (F);
            end loop;
         end Setup_Out_Ports;

         -------------------------
         -- Setup_Virtual_Ports --
         -------------------------

         procedure Setup_Virtual_Ports is
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            F : Node_Id;
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         begin
            Call_Parameters := New_List (CTN.K_Parameter_List);

            if AINU.Is_Empty (Features (Communicating_Component)) then
               return;
            end if;

            F := First_Node (Features (Communicating_Component));

            while Present (F) loop
               Call_Parameters := New_List (CTN.K_Parameter_List);

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               if Kind (F) = K_Port_Spec_Instance
                 and then Is_Data (F)
                 and then Get_Connection_Pattern (F) = Inter_Process
                 and then Is_Virtual (Get_Port_By_Name (F, Current_Device))
               then
                  Append_Node_To_List
                    (Make_Literal
                       (CV.New_Pointed_Char_Value (Map_Port_Name (F))),
                     Call_Parameters);

                  Append_Node_To_List
                    (Make_Variable_Address
                       (Make_Defining_Identifier (Map_Port_Var (F))),
                     Call_Parameters);

                  N :=
                    Make_Call_Profile
                      (RF (RE_Pok_Port_Virtual_Create),
                       Call_Parameters);
                  Append_Node_To_List (N, Statements);

                  Append_Node_To_List
                    (Make_Variable_Declaration
                       (Defining_Identifier =>
                          (Make_Defining_Identifier (Map_Port_Var (F))),
                        Used_Type => RE (RE_Uint8_T)),
                     CTN.Declarations (Current_File));
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               end if;
               F := Next_Node (F);
            end loop;
         end Setup_Virtual_Ports;

      begin
         if Real_Process then
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            U :=
              CTN.Distributed_Application_Unit
                (CTN.Naming_Node (Backend_Node (Identifier (E))));
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            P := CTN.Entity (U);

            Push_Entity (P);
            Push_Entity (U);

            Communicating_Component := E;
         else
            Communicating_Component := Corresponding_Component;
         end if;

         Set_Main_Source;

         Use_Error_Handling := False;

         Thread_Id := 1;

         Statements := New_List (CTN.K_Statement_List);

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         Add_Include (E => RH (RH_Activity));
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         Add_Include (E => RH (RH_Gtypes));
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         if Use_ARINC653_API then
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            Process_Variable_Type := RE (RE_Process_Id_Type);
            Process_Variable_Name := RE (RE_Arinc_Threads);
         else
            Process_Variable_Type := RE (RE_Uint32_T);
            Process_Variable_Name := RE (RE_Pok_Threads);
         end if;

         --  Set up ports of the partition
         Append_Node_To_List
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           (Make_Variable_Declaration
              (CTU.Make_Array_Declaration
                 (Defining_Identifier => Process_Variable_Name,
                  Array_Size          => RE (RE_Pok_Config_Nb_Threads)),
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               Used_Type => Process_Variable_Type),
            CTN.Declarations (Current_File));

         Set_Str_To_Name_Buffer ("tattr");
         Tattr := Make_Defining_Identifier (Name_Find);

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         if Use_ARINC653_API then
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            N :=
              Make_Variable_Declaration
                (Defining_Identifier => Copy_Node (Tattr),
                 Used_Type           => RE (RE_Process_Attribute_Type));
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         else
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            N :=
              Make_Variable_Declaration
                (Defining_Identifier => Copy_Node (Tattr),
                 Used_Type           => RE (RE_Pok_Thread_Attr_T));
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         end if;

         --  Declare the variable that contain
         --  tasks/process attributes.

         Append_Node_To_List (N, Statements);

         POK_Declare_Return_Variable (Statements);

         Setup_In_Ports;
         Setup_Out_Ports;
         Setup_Virtual_Ports;

         --  Make the main function specification and add it in the current
         --  file (main.c).

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         Spec :=
           Make_Function_Specification
             (Defining_Identifier => RE (RE_Main),
              Parameters          => No_List,
              Return_Type         => RE (RE_Int));
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         if Init_Function /= No_Node then
            Append_Node_To_List (Init_Function, Statements);
         end if;

         --  First, generate code to create semaphores associated
         --  with data components.
         if not AINU.Is_Empty (Subcomponents (E)) then
            S := First_Node (Subcomponents (E));
            while Present (S) loop
               if AINU.Is_Data (Corresponding_Instance (S)) then
                  Shared_Data := Corresponding_Instance (S);
                  --  Automatically use the types.h header if we use
                  --  protected data.

                  Add_Include (RH (RH_Types));

                  --  Declare the variable in the file

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                  N :=
                    Make_Variable_Declaration
                      (Map_C_Defining_Identifier (S),
                       Map_C_Data_Type_Designator (Shared_Data));
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                  Append_Node_To_List (N, CTN.Declarations (Current_File));

                  Bind_AADL_To_Object (Identifier (S), N);

                  --  If the data needs to be protected, generate
                  --  function call to create locking objects.

                  if Is_Protected_Data (Shared_Data) then
                     Call_Parameters := New_List (CTN.K_Parameter_List);

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                     if Use_ARINC653_API then
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                        --  Add the semaphore name.
                        Append_Node_To_List
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                          (Make_Literal
                             (CV.New_Pointed_Char_Value
                                (Map_Associated_Locking_Entity_Name (S))),
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                           Call_Parameters);

                        --  Current semaphore value.
                        Append_Node_To_List
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                          (Make_Literal (New_Int_Value (1, 1, 10)),
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                           Call_Parameters);

                        --  Maximum semaphore value.
                        Append_Node_To_List
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                          (Make_Literal (New_Int_Value (1, 1, 10)),
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                           Call_Parameters);

                        --  Specify the queueing port discipline
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                        Append_Node_To_List (RE (RE_Fifo), Call_Parameters);
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                        Append_Node_To_List
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                          (Make_Variable_Address
                             (Make_Defining_Identifier
                                (Map_Associated_Locking_Entity_Name (S))),
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                           Call_Parameters);

                        Add_Return_Variable_In_Parameters (Call_Parameters);

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                        Function_Call :=
                          POK_Make_Function_Call_With_Assert
                            (RF (RE_Create_Semaphore),
                             Call_Parameters);
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                     else
                        Append_Node_To_List
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                          (Make_Variable_Address
                             (Make_Defining_Identifier
                                (Map_Associated_Locking_Entity_Name (S))),
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                           Call_Parameters);

                        --  Current semaphore value.
                        Append_Node_To_List
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                          (Make_Literal (New_Int_Value (1, 1, 10)),
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                           Call_Parameters);

                        --  Maximum semaphore value.
                        Append_Node_To_List
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                          (Make_Literal (New_Int_Value (1, 1, 10)),
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                           Call_Parameters);

                        --  Specify the queueing port discipline
                        Append_Node_To_List
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                          (RE (RE_Pok_Semaphore_Discipline_Fifo),
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                           Call_Parameters);

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                        Function_Call :=
                          POK_Make_Function_Call_With_Assert
                            (RF (RE_Pok_Sem_Create),
                             Call_Parameters);
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                     end if;

                     Append_Node_To_List (Function_Call, Statements);
                  end if;
               end if;

               S := Next_Node (S);
            end loop;
         end if;

         --  Then, generate the other components
         --  correspond to thread initialization.

         if not AINU.Is_Empty (Subcomponents (E)) then
            S := First_Node (Subcomponents (E));
            while Present (S) loop
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               Visit (Corresponding_Instance (S));
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               S := Next_Node (S);
            end loop;
         end if;

         if Use_Error_Handling then
            Call_Parameters := New_List (CTN.K_Parameter_List);

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            if Use_ARINC653_API then
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               Called_Function := RF (RE_Create_Error_Handler);

               Append_Node_To_List
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                 (RE (RE_Pok_Error_Handler_Worker),
                  Call_Parameters);
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               Append_Node_To_List
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                 (Make_Literal (CV.New_Int_Value (8192, 1, 10)),
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                  Call_Parameters);

               Add_Return_Variable_In_Parameters (Call_Parameters);
            else
               Called_Function := RF (RE_Pok_Error_Handler_Create);
            end if;

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            N := CTU.Make_Call_Profile (Called_Function, Call_Parameters);
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            Append_Node_To_List (N, Statements);

            POK_Add_Return_Assertion (Statements);

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            N :=
              Message_Comment
                ("One thread inside the partition can raise faults." &
                 "We start the error handle to treat these potential" &
                 "faults.");
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            CTU.Append_Node_To_List (N, Statements);
         end if;

         --  Here, all threads were created. Put the partition
         --  in the NORMAL state.

         if POK_Flavor = POK then
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            N :=
              CTU.Make_Call_Profile
                (RF (RE_Pok_Partition_Set_Mode),
                 Make_List_Id (RE (RE_Pok_Partition_Mode_Normal)));
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         else
            Call_Parameters := New_List (CTN.K_Parameter_List);

            Append_Node_To_List (RE (RE_Normal), Call_Parameters);
            Add_Return_Variable_In_Parameters (Call_Parameters);

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            N :=
              CTU.Make_Call_Profile
                (RF (RE_Set_Partition_Mode),
                 Call_Parameters);
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         end if;
         Append_Node_To_List (N, Statements);

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         N :=
           Message_Comment
             ("Now, we created all resources of the process. Consequently," &
              "this thread will not be used any more and it will be kept" &
              "in a dormant state. By doing that, we also allow one more" &
              "thread in this partition");
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         CTU.Append_Node_To_List (N, Statements);

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         N :=
           CTU.Make_Return_Statement (Make_Literal (New_Int_Value (0, 1, 10)));
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         Append_Node_To_List (N, Statements);

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         Main_Function :=
           Make_Function_Implementation (Spec, Declarations, Statements);
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         --  Now, we define the error handler callback.
         --  This function is used each time an error is raised by
         --  the kernel.

         if Use_Error_Handling then
            Set_Deployment_Header;

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            N :=
              CTU.Make_Define_Statement
                (Defining_Identifier =>
                   RE (RE_Pok_Use_Generated_Error_Handler),
                 Value => CTU.Make_Literal (CV.New_Int_Value (1, 1, 10)));
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            CTU.Append_Node_To_List (N, CTN.Declarations (CTU.Current_File));

            Set_Main_Source;

            Declarations := New_List (CTN.K_Declaration_List);
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            Statements   := New_List (CTN.K_Statement_List);
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            if Use_ARINC653_API then
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               Used_Type := RE (RE_Error_Status_Type);
            else
               Used_Type := RE (RE_Pok_Error_Status_T);
            end if;

            Append_Node_To_List
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              (Make_Variable_Declaration
                 (Defining_Identifier =>
                    Make_Defining_Identifier (VN (V_Error_Status)),
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                  Used_Type => Used_Type),
               Statements);

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            if Use_ARINC653_API then
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               Append_Node_To_List
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                 (Make_Variable_Declaration
                    (Defining_Identifier =>
                       Make_Defining_Identifier (VN (V_Ret)),
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                     Used_Type => RE (RE_Return_Code_Type)),
                  Statements);
            end if;

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            N :=
              Message_Comment
                ("The variables error and thread are created" &
                 "to store the thread-id and the error-id" &
                 "when a fault is raised");
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            CTU.Append_Node_To_List (N, Statements);

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            N :=
              Message_Comment
                ("We prefer to force a default value to the variables" &
                 "error and thread");
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            Append_Node_To_List (N, Statements);

            --  Here, we initialize the variables to be sure to have
            --  a good default value.

            Call_Parameters := New_List (CTN.K_Parameter_List);

            Append_Node_To_List
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              (Make_Variable_Address
                 (Make_Defining_Identifier (VN (V_Error_Status))),
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               Call_Parameters);

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            N :=
              Message_Comment
                ("Here, we declare the fault handler as ready and" &
                 "that faulty thread-id and error-id must be stored" &
                 "in the thread and error variables");
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            CTU.Append_Node_To_List (N, Statements);

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            if Use_ARINC653_API then
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               Called_Function := RF (RE_Stop_Self);
            else
               Called_Function := RF (RE_Pok_Thread_Stop_Self);
            end if;

            Append_Node_To_List
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              (Make_Call_Profile (Called_Function, No_List),
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               While_Statements);

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            if Use_ARINC653_API then
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               Called_Function := RF (RE_Get_Error_Status);
            else
               Called_Function := RF (RE_Pok_Error_Get);
            end if;

            Call_Parameters := New_List (CTN.K_Parameter_List);

            Append_Node_To_List
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              (Make_Variable_Address
                 (Make_Defining_Identifier (VN (V_Error_Status))),
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               Call_Parameters);

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            if Use_ARINC653_API then
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               Append_Node_To_List
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                 (Make_Variable_Address
                    (Make_Defining_Identifier (VN (V_Ret))),
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                  Call_Parameters);
            end if;

            Append_Node_To_List
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              (Make_Call_Profile (Called_Function, Call_Parameters),
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               While_Statements);

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            if Use_ARINC653_API then
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               Used_Member := RE (RE_Failed_Process_Id);
            else
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               Used_Member := Make_Defining_Identifier (MN (M_Failed_Thread));
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            end if;
            Append_Node_To_List
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              (Make_Switch_Statement
                 (Make_Member_Designator
                    (Used_Member,
                     Make_Defining_Identifier (VN (V_Error_Status))),
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                  Error_Switch_Alternatives),
               While_Statements);