+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
--- --
--- S Y S T E M . T A S K I N G . U T I L I T I E S --
--- --
--- S p e c --
--- --
--- $Revision: 1.1.16.1 $
--- --
--- 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 package provides RTS Internal Declarations.
--- These declarations are not part of the GNARLI
-
-with Unchecked_Conversion;
-
-package System.Tasking.Utilities is
-
- function ATCB_To_Address is new
- Unchecked_Conversion (Task_ID, System.Address);
-
- ---------------------------------
- -- Task_Stage Related routines --
- ---------------------------------
-
- procedure Make_Independent;
- -- Move the current task to the outermost level (level 1) of the master
- -- master hierarchy of the environment task. This is one level further
- -- out than normal tasks defined in library-level packages (level 2).
- -- The environment task will wait for level 2 tasks to terminate normally,
- -- then it will abort all the level 1 tasks. See Finalize_Global_Tasks
- -- procedure for more information.
- --
- -- This is a dangerous operation, and should only be used on nested tasks
- -- or tasks that depend on any objects that might be finalized earlier than
- -- the termination of the environment task. It is for internal use by
- -- GNARL, to prevent such internal server tasks from preventing a
- -- partition from terminating.
-
- Independent_Task_Count : Natural := 0;
- -- Number of independent task. This counter is incremented each time
- -- Make_Independent is called. Note that if a server task terminates,
- -- this counter will not be decremented. Since Make_Independent locks
- -- the environment task (because every independent task depends on it),
- -- this counter is protected by the environment task's lock.
-
- ------------------------------------
- -- Task Abortion related routines --
- ------------------------------------
-
- procedure Cancel_Queued_Entry_Calls (T : Task_ID);
- -- Cancel any entry calls queued on target task.
- -- Do not call this while holding any locks.
-
- procedure Exit_One_ATC_Level (Self_ID : Task_ID);
- pragma Inline (Exit_One_ATC_Level);
- -- Call only with abort deferred and holding lock of Self_ID.
- -- This is a bit of common code for all entry calls.
- -- The effect is to exit one level of ATC nesting.
-
- procedure Abort_One_Task
- (Self_ID : Task_ID;
- T : Task_ID);
- -- Similar to Locked_Abort_To_Level (Self_ID, T, 0), but:
- -- (1) caller should be holding no locks
- -- (2) may be called for tasks that have not yet been activated
- -- (3) always aborts whole task
-
- procedure Abort_Tasks (Tasks : Task_List);
- -- Abort_Tasks is called to initiate abortion, however, the actual
- -- abortion is done by abortee by means of Abort_Handler
-
- procedure Make_Passive
- (Self_ID : Task_ID;
- Task_Completed : Boolean);
- -- Update counts to indicate current task is either terminated
- -- or accepting on a terminate alternative. Call holding no locks.
-
-end System.Tasking.Utilities;
projects / msp430-gcc.git / blobdiff