+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
--- --
--- S Y S T E M . T A S K _ P R I M I T I V E S . O P E R A T I O N S --
--- . D E C --
--- --
--- B o d y --
--- --
--- $Revision: 1.2.10.2 $
--- --
--- Copyright (C) 2000 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- --
--- 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. --
--- --
--- 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. --
--- --
--- GNARL was developed by the GNARL team at Florida State University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
--- This package is for OpenVMS/Alpha
---
-with System.OS_Interface;
-with System.Tasking;
-with Unchecked_Conversion;
-package body System.Task_Primitives.Operations.DEC is
-
- use System.OS_Interface;
- use System.Tasking;
- use System.Aux_DEC;
- use type Interfaces.C.int;
-
- -- The FAB_RAB_Type specifieds where the context field (the calling
- -- task) is stored. Other fields defined for FAB_RAB aren't need and
- -- so are ignored.
- type FAB_RAB_Type is
- record
- CTX : Unsigned_Longword;
- end record;
-
- for FAB_RAB_Type use
- record
- CTX at 24 range 0 .. 31;
- end record;
-
- for FAB_RAB_Type'Size use 224;
-
- type FAB_RAB_Access_Type is access all FAB_RAB_Type;
-
- -----------------------
- -- Local Subprograms --
- -----------------------
-
- function To_Unsigned_Longword is new
- Unchecked_Conversion (Task_ID, Unsigned_Longword);
-
- function To_Task_Id is new
- Unchecked_Conversion (Unsigned_Longword, Task_ID);
-
- function To_FAB_RAB is new
- Unchecked_Conversion (Address, FAB_RAB_Access_Type);
-
- ---------------------------
- -- Interrupt_AST_Handler --
- ---------------------------
-
- procedure Interrupt_AST_Handler (ID : Address) is
- Result : Interfaces.C.int;
- AST_Self_ID : Task_ID := To_Task_Id (ID);
- begin
- Result := pthread_cond_signal_int_np (AST_Self_ID.Common.LL.CV'Access);
- pragma Assert (Result = 0);
- end Interrupt_AST_Handler;
-
- ---------------------
- -- RMS_AST_Handler --
- ---------------------
-
- procedure RMS_AST_Handler (ID : Address) is
- AST_Self_ID : Task_ID := To_Task_Id (To_FAB_RAB (ID).CTX);
- Result : Interfaces.C.int;
- begin
- AST_Self_ID.Common.LL.AST_Pending := False;
- Result := pthread_cond_signal_int_np (AST_Self_ID.Common.LL.CV'Access);
- pragma Assert (Result = 0);
- end RMS_AST_Handler;
-
- ----------
- -- Self --
- ----------
-
- function Self return Unsigned_Longword is
- Self_ID : Task_ID := Self;
- begin
- Self_ID.Common.LL.AST_Pending := True;
- return To_Unsigned_Longword (Self);
- end Self;
-
- -------------------------
- -- Starlet_AST_Handler --
- -------------------------
-
- procedure Starlet_AST_Handler (ID : Address) is
- Result : Interfaces.C.int;
- AST_Self_ID : Task_ID := To_Task_Id (ID);
- begin
- AST_Self_ID.Common.LL.AST_Pending := False;
- Result := pthread_cond_signal_int_np (AST_Self_ID.Common.LL.CV'Access);
- pragma Assert (Result = 0);
- end Starlet_AST_Handler;
-
- ----------------
- -- Task_Synch --
- ----------------
-
- procedure Task_Synch is
- Synch_Self_ID : Task_ID := Self;
- begin
- Write_Lock (Synch_Self_ID);
- Synch_Self_ID.Common.State := AST_Server_Sleep;
- while Synch_Self_ID.Common.LL.AST_Pending loop
- Sleep (Synch_Self_ID, AST_Server_Sleep);
- end loop;
- Synch_Self_ID.Common.State := Runnable;
- Unlock (Synch_Self_ID);
- end Task_Synch;
-
-end System.Task_Primitives.Operations.DEC;
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