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+------------------------------------------------------------------------------
+-- --
+-- GNAT 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 --
+-- --
+-- Copyright (C) 1992-2005, 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, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, 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. --
+-- --
+-- GNARL was developed by the GNARL team at Florida State University. --
+-- Extensive contributions were provided by Ada Core Technologies, Inc. --
+-- --
+------------------------------------------------------------------------------
+
+-- This is a version for Solaris native threads
+
+separate (System.Task_Primitives.Operations)
+package body Specific is
+
+ ----------------
+ -- Initialize --
+ ----------------
+
+ procedure Initialize (Environment_Task : Task_Id) is
+ pragma Unreferenced (Environment_Task);
+ Result : Interfaces.C.int;
+ begin
+ Result := thr_keycreate (ATCB_Key'Access, System.Null_Address);
+ pragma Assert (Result = 0);
+ end Initialize;
+
+ -------------------
+ -- Is_Valid_Task --
+ -------------------
+
+ function Is_Valid_Task return Boolean is
+ Unknown_Task : aliased System.Address;
+ Result : Interfaces.C.int;
+ begin
+ Result := thr_getspecific (ATCB_Key, Unknown_Task'Unchecked_Access);
+ pragma Assert (Result = 0);
+ return Unknown_Task /= System.Null_Address;
+ end Is_Valid_Task;
+
+ ---------
+ -- Set --
+ ---------
+
+ procedure Set (Self_Id : Task_Id) is
+ Result : Interfaces.C.int;
+ begin
+ Result := thr_setspecific (ATCB_Key, To_Address (Self_Id));
+ pragma Assert (Result = 0);
+ end Set;
+
+ ----------
+ -- Self --
+ ----------
+
+ -- To make Ada tasks and C threads interoperate better, we have
+ -- added some functionality to Self. Suppose a C main program
+ -- (with threads) calls an Ada procedure and the Ada procedure
+ -- calls the tasking run-time system. Eventually, a call will be
+ -- made to self. Since the call is not coming from an Ada task,
+ -- there will be no corresponding ATCB.
+
+ -- What we do in Self is to catch references that do not come
+ -- from recognized Ada tasks, and create an ATCB for the calling
+ -- thread.
+
+ -- The new ATCB will be "detached" from the normal Ada task
+ -- master hierarchy, much like the existing implicitly created
+ -- signal-server tasks.
+
+ function Self return Task_Id is
+ Result : Interfaces.C.int;
+ Self_Id : aliased System.Address;
+ begin
+ Result := thr_getspecific (ATCB_Key, Self_Id'Unchecked_Access);
+ pragma Assert (Result = 0);
+
+ if Self_Id = System.Null_Address then
+ return Register_Foreign_Thread;
+ else
+ return To_Task_Id (Self_Id);
+ end if;
+ end Self;
+
+end Specific;