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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [s-tasinf-irix.ads] - Rev 848
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------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . T A S K _ I N F O -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2009 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 -- -- <http://www.gnu.org/licenses/>. -- -- -- -- 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 and use 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. -- This unit may be used directly from an application program by providing -- an appropriate WITH, and the interface can be expected to remain stable. -- This is the IRIX (kernel threads) version of this package with Interfaces.C; package System.Task_Info is pragma Preelaborate; pragma Elaborate_Body; -- To ensure that a body is allowed ----------------------------------------- -- 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; subtype FIFO_Priority is Thread_Scheduling_Priority range 0 .. 255; subtype RR_Priority is Thread_Scheduling_Priority range 0 .. 255; subtype TS_Priority is Thread_Scheduling_Priority range 1 .. 40; subtype OTHER_Priority is Thread_Scheduling_Priority range 1 .. 40; 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; Unspecified_Task_Info : constant Task_Info_Type := null; -- Value passed to task in the absence of a Task_Info pragma end System.Task_Info;
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