------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . T H R E A D S -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2019, Free Software Foundation, Inc. -- -- -- -- GNAT 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 3, or (at your option) any later ver- -- -- sion. GNAT 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. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package provides facilities to register a thread to the runtime, -- and allocate its task specific datas. -- This package is currently implemented for: -- VxWorks AE653 rts-cert -- VxWorks AE653 rts-full (not rts-kernel) with Ada.Exceptions; with Ada.Unchecked_Conversion; with Interfaces.C; with System.Secondary_Stack; with System.Soft_Links; package System.Threads is package SST renames System.Secondary_Stack; type ATSD is limited private; -- Type of the Ada thread specific data. It contains datas needed -- by the GNAT runtime. type ATSD_Access is access ATSD; function From_Address is new Ada.Unchecked_Conversion (Address, ATSD_Access); subtype STATUS is Interfaces.C.int; -- Equivalent of the C type STATUS type t_id is new Interfaces.C.long; subtype Thread_Id is t_id; function Register (T : Thread_Id) return STATUS; -- Create the task specific data necessary for Ada language support -------------------------- -- Thread Body Handling -- -------------------------- -- The subprograms in this section are called from the process body -- wrapper in the APEX process registration package. procedure Thread_Body_Enter (Sec_Stack_Ptr : SST.SS_Stack_Ptr; Process_ATSD_Address : System.Address); -- Enter thread body, see above for details procedure Thread_Body_Leave; -- Leave thread body (normally), see above for details procedure Thread_Body_Exceptional_Exit (EO : Ada.Exceptions.Exception_Occurrence); -- Leave thread body (abnormally on exception), see above for details private type ATSD is new System.Soft_Links.TSD; end System.Threads;