| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S Y S T E M . P R O G R A M _ I N F O -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1997-2009, 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 is an Irix (old pthread library) version of this package |
| |
| -- This package contains the parameters used by the run-time system at |
| -- program startup. These parameters are isolated in this package body to |
| -- facilitate replacement by the end user. |
| -- |
| -- To replace the default values, copy this source file into your build |
| -- directory, edit the file to reflect your desired behavior, and recompile |
| -- with the command: |
| -- |
| -- % gcc -c -O2 -gnatpg s-proinf.adb |
| -- |
| -- then relink your application as usual. |
| |
| pragma Warnings (Off); -- why??? |
| with System.OS_Lib; |
| pragma Warnings (On); |
| |
| package body System.Program_Info is |
| |
| Kbytes : constant := 1024; |
| |
| Default_Initial_Sproc_Count : constant := 0; |
| Default_Max_Sproc_Count : constant := 128; |
| Default_Sproc_Stack_Size : constant := 16#4000#; |
| Default_Stack_Guard_Pages : constant := 1; |
| Default_Default_Time_Slice : constant := 0.0; |
| Default_Default_Task_Stack : constant := 12 * Kbytes; |
| Default_Pthread_Sched_Signal : constant := 35; |
| Default_Pthread_Arena_Size : constant := 16#40000#; |
| Default_Os_Default_Priority : constant := 0; |
| |
| ------------------------- |
| -- Initial_Sproc_Count -- |
| ------------------------- |
| |
| function Initial_Sproc_Count return Integer is |
| |
| function sysmp (P1 : Integer) return Integer; |
| pragma Import (C, sysmp, "sysmp", "sysmp"); |
| |
| MP_NPROCS : constant := 1; -- # processor in complex |
| |
| Pthread_Sproc_Count : constant System.OS_Lib.String_Access := |
| System.OS_Lib.Getenv ("PTHREAD_SPROC_COUNT"); |
| |
| begin |
| if Pthread_Sproc_Count.all'Length = 0 then |
| return Default_Initial_Sproc_Count; |
| |
| elsif Pthread_Sproc_Count.all = "AUTO" then |
| return sysmp (MP_NPROCS); |
| |
| else |
| return Integer'Value (Pthread_Sproc_Count.all); |
| end if; |
| |
| exception |
| when others => |
| return Default_Initial_Sproc_Count; |
| end Initial_Sproc_Count; |
| |
| --------------------- |
| -- Max_Sproc_Count -- |
| --------------------- |
| |
| function Max_Sproc_Count return Integer is |
| Pthread_Max_Sproc_Count : constant System.OS_Lib.String_Access := |
| System.OS_Lib.Getenv ("PTHREAD_MAX_SPROC_COUNT"); |
| |
| begin |
| if Pthread_Max_Sproc_Count.all'Length = 0 then |
| return Default_Max_Sproc_Count; |
| else |
| return Integer'Value (Pthread_Max_Sproc_Count.all); |
| end if; |
| exception |
| when others => |
| return Default_Max_Sproc_Count; |
| end Max_Sproc_Count; |
| |
| ---------------------- |
| -- Sproc_Stack_Size -- |
| ---------------------- |
| |
| function Sproc_Stack_Size return Integer is |
| begin |
| return Default_Sproc_Stack_Size; |
| end Sproc_Stack_Size; |
| |
| ------------------------ |
| -- Default_Time_Slice -- |
| ------------------------ |
| |
| function Default_Time_Slice return Duration is |
| Pthread_Time_Slice_Sec : constant System.OS_Lib.String_Access := |
| System.OS_Lib.Getenv |
| ("PTHREAD_TIME_SLICE_SEC"); |
| Pthread_Time_Slice_Usec : constant System.OS_Lib.String_Access := |
| System.OS_Lib.Getenv |
| ("PTHREAD_TIME_SLICE_USEC"); |
| |
| Val_Sec, Val_Usec : Integer := 0; |
| |
| begin |
| if Pthread_Time_Slice_Sec.all'Length /= 0 or |
| Pthread_Time_Slice_Usec.all'Length /= 0 |
| then |
| if Pthread_Time_Slice_Sec.all'Length /= 0 then |
| Val_Sec := Integer'Value (Pthread_Time_Slice_Sec.all); |
| end if; |
| |
| if Pthread_Time_Slice_Usec.all'Length /= 0 then |
| Val_Usec := Integer'Value (Pthread_Time_Slice_Usec.all); |
| end if; |
| |
| return Duration (Val_Sec) + Duration (Val_Usec) / 1000.0; |
| else |
| return Default_Default_Time_Slice; |
| end if; |
| |
| exception |
| when others => |
| return Default_Default_Time_Slice; |
| end Default_Time_Slice; |
| |
| ------------------------ |
| -- Default_Task_Stack -- |
| ------------------------ |
| |
| function Default_Task_Stack return Integer is |
| begin |
| return Default_Default_Task_Stack; |
| end Default_Task_Stack; |
| |
| ----------------------- |
| -- Stack_Guard_Pages -- |
| ----------------------- |
| |
| function Stack_Guard_Pages return Integer is |
| Pthread_Stack_Guard_Pages : constant System.OS_Lib.String_Access := |
| System.OS_Lib.Getenv |
| ("PTHREAD_STACK_GUARD_PAGES"); |
| begin |
| if Pthread_Stack_Guard_Pages.all'Length /= 0 then |
| return Integer'Value (Pthread_Stack_Guard_Pages.all); |
| else |
| return Default_Stack_Guard_Pages; |
| end if; |
| exception |
| when others => |
| return Default_Stack_Guard_Pages; |
| end Stack_Guard_Pages; |
| |
| -------------------------- |
| -- Pthread_Sched_Signal -- |
| -------------------------- |
| |
| function Pthread_Sched_Signal return Integer is |
| begin |
| return Default_Pthread_Sched_Signal; |
| end Pthread_Sched_Signal; |
| |
| ------------------------ |
| -- Pthread_Arena_Size -- |
| ------------------------ |
| |
| function Pthread_Arena_Size return Integer is |
| Pthread_Arena_Size : constant System.OS_Lib.String_Access := |
| System.OS_Lib.Getenv |
| ("PTHREAD_ARENA_SIZE"); |
| |
| begin |
| if Pthread_Arena_Size.all'Length = 0 then |
| return Default_Pthread_Arena_Size; |
| else |
| return Integer'Value (Pthread_Arena_Size.all); |
| end if; |
| |
| exception |
| when others => |
| return Default_Pthread_Arena_Size; |
| end Pthread_Arena_Size; |
| |
| ------------------------- |
| -- Os_Default_Priority -- |
| ------------------------- |
| |
| function Os_Default_Priority return Integer is |
| begin |
| return Default_Os_Default_Priority; |
| end Os_Default_Priority; |
| |
| end System.Program_Info; |