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------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- S Y S T E M . P R O G R A M _ I N F O --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1997-2005 Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This package contains the definitions and routines used as parameters
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-- to the run-time system at program startup for the SGI implementation.
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package System.Program_Info is
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pragma Preelaborate;
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function Initial_Sproc_Count return Integer;
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-- The number of sproc created at program startup for scheduling
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-- threads.
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function Max_Sproc_Count return Integer;
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-- The maximum number of sprocs that can be created by the program
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-- for servicing threads. This limit includes both the pre-created
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-- sprocs and those explicitly created under program control.
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function Sproc_Stack_Size return Integer;
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-- The size, in bytes, of the sproc's initial stack.
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function Default_Time_Slice return Duration;
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-- The default time quanta for round-robin scheduling of threads of
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-- equal priority. This default value can be overridden on a per-task
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-- basis by specifying an alternate value via the implementation-defined
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-- Task_Info pragma. See s-tasinf.ads for more information.
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function Default_Task_Stack return Integer;
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-- The default stack size for each created thread. This default value
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-- can be overriden on a per-task basis by the language-defined
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-- Storage_Size pragma.
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function Stack_Guard_Pages return Integer;
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-- The number of non-writable, guard pages to append to the bottom of
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-- each thread's stack.
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function Pthread_Sched_Signal return Integer;
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-- The signal used by the Pthreads library to affect scheduling actions
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-- in remote sprocs.
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function Pthread_Arena_Size return Integer;
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-- The size of the shared arena from which pthread locks are allocated.
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-- See the usinit(3p) man page for more information on shared arenas.
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function Os_Default_Priority return Integer;
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-- The default Irix Non-Degrading priority for each sproc created to
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-- service threads.
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end System.Program_Info;
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