+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- S Y S T E M . T A S K _ I N F O --
--- --
--- S p e c --
--- (Compiler Interface) --
--- --
--- $Revision: 1.1.16.1 $
--- --
--- Copyright (C) 1992-2000 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 2, 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. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; 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. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- This package contains the definitions and routines associated with the
--- implementation of the Task_Info pragma. It is specialized appropriately
--- for targets that make use of this pragma.
-
--- Note: the compiler generates direct calls to this interface, via Rtsfind.
--- Any changes to this interface may require corresponding compiler changes.
-
-with Interfaces.C;
-with System.OS_Interface;
-with Unchecked_Deallocation;
-
-package System.Task_Info is
-pragma Elaborate_Body;
--- To ensure that a body is allowed
-
- package OSI renames System.OS_Interface;
-
- -----------------------------------------
- -- Implementation of Task_Info Feature --
- -----------------------------------------
-
- -- Pragma Task_Info allows an application to set the underlying
- -- pthread scheduling attributes for a specific task.
-
- ------------------
- -- Declarations --
- ------------------
-
- type Thread_Scheduling_Scope is
- (PTHREAD_SCOPE_PROCESS, PTHREAD_SCOPE_SYSTEM);
-
- for Thread_Scheduling_Scope'Size use Interfaces.C.int'Size;
-
- type Thread_Scheduling_Inheritance is
- (PTHREAD_EXPLICIT_SCHED, PTHREAD_INHERIT_SCHED);
-
- for Thread_Scheduling_Inheritance'Size use Interfaces.C.int'Size;
-
- type Thread_Scheduling_Policy is
- (SCHED_FIFO, -- The first-in-first-out real-time policy
- SCHED_RR, -- The round-robin real-time scheduling policy
- SCHED_TS); -- The timeshare earnings based scheduling policy
-
- for Thread_Scheduling_Policy'Size use Interfaces.C.int'Size;
- for Thread_Scheduling_Policy use
- (SCHED_FIFO => 1,
- SCHED_RR => 2,
- SCHED_TS => 3);
-
- function SCHED_OTHER return Thread_Scheduling_Policy renames SCHED_TS;
-
- No_Specified_Priority : constant := -1;
-
- subtype Thread_Scheduling_Priority is Integer range
- No_Specified_Priority .. 255;
-
- function Min (Policy : Interfaces.C.int) return Interfaces.C.int
- renames OSI.sched_get_priority_min;
-
- function Max (Policy : Interfaces.C.int) return Interfaces.C.int
- renames OSI.sched_get_priority_max;
-
- subtype FIFO_Priority is Thread_Scheduling_Priority range
- Thread_Scheduling_Priority (Min (OSI.SCHED_FIFO)) ..
- Thread_Scheduling_Priority (Max (OSI.SCHED_FIFO));
-
- subtype RR_Priority is Thread_Scheduling_Priority range
- Thread_Scheduling_Priority (Min (OSI.SCHED_RR)) ..
- Thread_Scheduling_Priority (Max (OSI.SCHED_RR));
-
- subtype TS_Priority is Thread_Scheduling_Priority range
- Thread_Scheduling_Priority (Min (OSI.SCHED_TS)) ..
- Thread_Scheduling_Priority (Max (OSI.SCHED_TS));
-
- subtype OTHER_Priority is Thread_Scheduling_Priority range
- Thread_Scheduling_Priority (Min (OSI.SCHED_OTHER)) ..
- Thread_Scheduling_Priority (Max (OSI.SCHED_OTHER));
-
- subtype CPU_Number is Integer range -1 .. Integer'Last;
- ANY_CPU : constant CPU_Number := CPU_Number'First;
-
- type Thread_Attributes is record
- Scope : Thread_Scheduling_Scope := PTHREAD_SCOPE_PROCESS;
- Inheritance : Thread_Scheduling_Inheritance := PTHREAD_EXPLICIT_SCHED;
- Policy : Thread_Scheduling_Policy := SCHED_RR;
- Priority : Thread_Scheduling_Priority := No_Specified_Priority;
- Runon_CPU : CPU_Number := ANY_CPU;
- end record;
-
- Default_Thread_Attributes : constant Thread_Attributes :=
- (PTHREAD_SCOPE_PROCESS, PTHREAD_EXPLICIT_SCHED, SCHED_RR,
- No_Specified_Priority, ANY_CPU);
-
- type Task_Info_Type is access all Thread_Attributes;
-
- type Task_Image_Type is access String;
- -- Used to generate a meaningful identifier for tasks that are variables
- -- and components of variables.
-
- procedure Free_Task_Image is new
- Unchecked_Deallocation (String, Task_Image_Type);
-
- Unspecified_Task_Info : constant Task_Info_Type := null;
- -- Value passed to task in the absence of a Task_Info pragma
-
-end System.Task_Info;
projects / msp430-gcc.git / blobdiff