------------------------------------------------------------------------------ -- -- -- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS -- -- -- -- SYSTEM.TASK_PRIMITIVES.OPERATIONS.SPECIFIC -- -- -- -- B o d y -- -- -- -- -- -- Copyright (C) 1991-2001, 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;