Re: [Ada] Fix 32/64bit mistake on SYSTEM_INFO component in s-win32

[Rainer Orth]

Hi Arnaud,

>> I'd keep the target list alphabetical.  Can do so when the Solaris patch
>> goes in.
>> 
>> Here's what I've successfully tested last night on both
>> i386-pc-solaris2.11 and sparc-sun-solaris2.11, shamelessly stolen from
>> the Linux counterparts.  If it is acceptable, I'd add *-*-solaris2.* to
>> the target list when merging.
>
> The change is OK.
>
>> 2019-09-19  Rainer Orth  <r...@cebitec.uni-bielefeld.de>
>> 
>>      * libgnarl/s-osinte__solaris.ads (sysconf): Declare.
>>      (SC_NPROCESSORS_ONLN): Define.
>>      * libgnarl/s-tasinf__solaris.ads (Number_Of_Processors): Declare.
>>      * libgnarl/s-tasinf__solaris.adb (N_CPU): New variable.
>>      (Number_Of_Processors): New function.

Thanks.  Here's what I've installed.

        Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University


2019-09-19  Rainer Orth  <r...@cebitec.uni-bielefeld.de>

        gcc/ada:
        * libgnarl/s-osinte__solaris.ads (sysconf): Declare.
        (SC_NPROCESSORS_ONLN): Define.
        * libgnarl/s-tasinf__solaris.ads (Number_Of_Processors): Declare.
        * libgnarl/s-tasinf__solaris.adb (N_CPU): New variable.
        (Number_Of_Processors): New function.

        gcc/testsuite:
        * gnat.dg/system_info1.adb: Sort dg-do target list.
        Add *-*-solaris2.*.


# HG changeset patch
# Parent  0d13bfaa0b34084a84b2b12d906b7252383366d4
Provide Task_Info.Number_Of_Processors on Solaris

diff --git a/gcc/ada/libgnarl/s-osinte__solaris.ads b/gcc/ada/libgnarl/s-osinte__solaris.ads
--- a/gcc/ada/libgnarl/s-osinte__solaris.ads
+++ b/gcc/ada/libgnarl/s-osinte__solaris.ads
@@ -259,6 +259,11 @@ package System.OS_Interface is
    function To_Timespec (D : Duration) return timespec;
    pragma Inline (To_Timespec);
 
+   function sysconf (name : int) return long;
+   pragma Import (C, sysconf);
+
+   SC_NPROCESSORS_ONLN : constant := 15;
+
    -------------
    -- Process --
    -------------
diff --git a/gcc/ada/libgnarl/s-tasinf__solaris.adb b/gcc/ada/libgnarl/s-tasinf__solaris.adb
--- a/gcc/ada/libgnarl/s-tasinf__solaris.adb
+++ b/gcc/ada/libgnarl/s-tasinf__solaris.adb
@@ -84,4 +84,23 @@ package body System.Task_Info is
       return (False, False);
    end Unbound_Thread_Attributes;
 
+   N_CPU : Natural := 0;
+   pragma Atomic (N_CPU);
+   --  Cache CPU number. Use pragma Atomic to avoid a race condition when
+   --  setting N_CPU in Number_Of_Processors below.
+
+   --------------------------
+   -- Number_Of_Processors --
+   --------------------------
+
+   function Number_Of_Processors return Positive is
+   begin
+      if N_CPU = 0 then
+         N_CPU := Natural
+           (OS_Interface.sysconf (OS_Interface.SC_NPROCESSORS_ONLN));
+      end if;
+
+      return N_CPU;
+   end Number_Of_Processors;
+
 end System.Task_Info;
diff --git a/gcc/ada/libgnarl/s-tasinf__solaris.ads b/gcc/ada/libgnarl/s-tasinf__solaris.ads
--- a/gcc/ada/libgnarl/s-tasinf__solaris.ads
+++ b/gcc/ada/libgnarl/s-tasinf__solaris.ads
@@ -139,4 +139,7 @@ package System.Task_Info is
 
    Unspecified_Task_Info : constant Task_Info_Type := null;
 
+   function Number_Of_Processors return Positive;
+   --  Returns the number of processors on the running host
+
 end System.Task_Info;
diff --git a/gcc/testsuite/gnat.dg/system_info1.adb b/gcc/testsuite/gnat.dg/system_info1.adb
--- a/gcc/testsuite/gnat.dg/system_info1.adb
+++ b/gcc/testsuite/gnat.dg/system_info1.adb
@@ -3,7 +3,7 @@
 --  both 32bit and 64bit Windows. Additional configurations where the
 --  feature was verified to work can opt-in.
 
---  { dg-do run { target *-*-mingw* *-*-linux* } }
+--  { dg-do run { target *-*-linux* *-*-mingw* *-*-solaris2.* } }
 
 with System.Multiprocessors;
 with System.Task_Info;