s-proinf-irix-athread.adb [plain text]
pragma Warnings (Off);
with GNAT.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;
function Initial_Sproc_Count return Integer is
function sysmp (P1 : Integer) return Integer;
pragma Import (C, sysmp, "sysmp", "sysmp");
MP_NPROCS : constant := 1;
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;
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;
function Sproc_Stack_Size return Integer is
begin
return Default_Sproc_Stack_Size;
end Sproc_Stack_Size;
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;
function Default_Task_Stack return Integer is
begin
return Default_Default_Task_Stack;
end Default_Task_Stack;
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;
function Pthread_Sched_Signal return Integer is
begin
return Default_Pthread_Sched_Signal;
end Pthread_Sched_Signal;
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;
function Os_Default_Priority return Integer is
begin
return Default_Os_Default_Priority;
end Os_Default_Priority;
end System.Program_Info;