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Diffstat (limited to 'gcc/ada/s-proinf-irix-athread.adb')
| -rw-r--r-- | gcc/ada/s-proinf-irix-athread.adb | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/gcc/ada/s-proinf-irix-athread.adb b/gcc/ada/s-proinf-irix-athread.adb new file mode 100644 index 00000000000..3e6bbc9557d --- /dev/null +++ b/gcc/ada/s-proinf-irix-athread.adb @@ -0,0 +1,221 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 1997-1999 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 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. +-- + +with GNAT.OS_Lib; + +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 GNAT.OS_Lib.String_Access := + GNAT.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 GNAT.OS_Lib.String_Access := + GNAT.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 GNAT.OS_Lib.String_Access := + GNAT.OS_Lib.Getenv ("PTHREAD_TIME_SLICE_SEC"); + Pthread_Time_Slice_Usec : constant GNAT.OS_Lib.String_Access := + GNAT.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 GNAT.OS_Lib.String_Access := + GNAT.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 GNAT.OS_Lib.String_Access := + GNAT.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; |