1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
------------------------------------------------------------------------------
-- --
-- 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) 1997-2008, 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, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, 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
pragma Preelaborate;
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 overridden 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;
|
