------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . P R O G R A M _ I N F O -- -- -- -- S p e c -- -- -- -- Copyright (C) 1997-2003 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 used as parameters -- to the run-time system at program startup for the SGI implementation. package System.Program_Info is function Initial_Sproc_Count return Integer; -- -- The number of sproc created at program startup for scheduling -- threads. -- function Max_Sproc_Count return Integer; -- -- The maximum number of sprocs that can be created by the program -- for servicing threads. This limit includes both the pre-created -- sprocs and those explicitly created under program control. -- function Sproc_Stack_Size return Integer; -- -- The size, in bytes, of the sproc's initial stack. -- function Default_Time_Slice return Duration; -- -- The default time quanta for round-robin scheduling of threads of -- equal priority. This default value can be overridden on a per-task -- basis by specifying an alternate value via the implementation-defined -- Task_Info pragma. See s-tasinf.ads for more information. -- function Default_Task_Stack return Integer; -- -- The default stack size for each created thread. This default value -- can be overriden on a per-task basis by the language-defined -- Storage_Size pragma. -- function Stack_Guard_Pages return Integer; -- -- The number of non-writable, guard pages to append to the bottom of -- each thread's stack. -- function Pthread_Sched_Signal return Integer; -- -- The signal used by the Pthreads library to affect scheduling actions -- in remote sprocs. -- function Pthread_Arena_Size return Integer; -- -- The size of the shared arena from which pthread locks are allocated. -- See the usinit(3p) man page for more information on shared arenas. -- function Os_Default_Priority return Integer; -- -- The default Irix Non-Degrading priority for each sproc created to -- service threads. -- end System.Program_Info;