| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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 . -- |
| -- S P E C I F I C -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- $Revision: 1.1 $ -- |
| -- -- |
| -- Copyright (C) 1991-1998, Florida State University -- |
| -- -- |
| -- 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. It is -- |
| -- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- |
| -- State University (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is a FSU-like version of this package. |
| |
| separate (System.Task_Primitives.Operations) |
| package body Specific is |
| |
| ------------------ |
| -- Local Data -- |
| ------------------ |
| |
| -- The followings are logically constants, but need to be initialized |
| -- at run time. |
| |
| ATCB_Key : aliased pthread_key_t; |
| -- Key used to find the Ada Task_ID associated with a thread |
| |
| ---------------- |
| -- Initialize -- |
| ---------------- |
| |
| procedure Initialize (Environment_Task : Task_ID) is |
| Result : Interfaces.C.int; |
| begin |
| Result := pthread_key_create (ATCB_Key'Access, null); |
| pragma Assert (Result = 0); |
| Result := pthread_setspecific (ATCB_Key, To_Address (Environment_Task)); |
| pragma Assert (Result = 0); |
| end Initialize; |
| |
| --------- |
| -- Set -- |
| --------- |
| |
| procedure Set (Self_Id : Task_ID) is |
| Result : Interfaces.C.int; |
| |
| begin |
| Result := pthread_setspecific (ATCB_Key, To_Address (Self_Id)); |
| pragma Assert (Result = 0); |
| end Set; |
| |
| ---------- |
| -- Self -- |
| ---------- |
| |
| function Self return Task_ID is |
| Result : System.Address; |
| |
| begin |
| Result := pthread_getspecific (ATCB_Key); |
| pragma Assert (Result /= System.Null_Address); |
| return To_Task_ID (Result); |
| end Self; |
| |
| end Specific; |
