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------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2007-2012, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, or (at your option) any --
-- later version. This library is distributed in the hope that it will be --
-- useful, but WITHOUT 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/>. --
-- --
-- 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. --
------------------------------------------------------------------------------
with Ada.Real_Time;
with Ada.Exceptions;
with Ada.Streams;
with Ada.Text_IO;
with AWS.Net.Sets;
with AWS.Net.Std;
with AWS.OS_Lib;
with AWS.Utils;
procedure Max_Poll_Size is
use AWS.Net;
use Ada.Streams;
use Ada.Text_IO;
use type Sets.Socket_Count;
Set : Sets.Socket_Set_Type;
Cnt : Sets.Socket_Count;
Server, Client, Peer : Socket_Type'Class := Socket (False);
Data : constant Stream_Element_Array :=
(1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22);
Error_Count : Integer := 16;
OK_Count : Integer := 16;
OK_Previous : Boolean := True;
Set_Size : constant := 4096;
type FD_Set_Type is array (0 .. Set_Size - 1) of Boolean;
pragma Pack (FD_Set_Type);
for FD_Set_Type'Size use Set_Size;
FDS : FD_Set_Type;
task Writer_Task is
entry Delayed_Send (Index : Sets.Socket_Index);
entry Cancel_Delay;
end Writer_Task;
procedure Read_Data (Socket : Socket_Type'Class; Mark : String) is
begin
if Socket.Receive /= Data then
Put_Line ("Wrong data " & Mark);
end if;
end Read_Data;
procedure Read_Data (Idx : Sets.Socket_Index; Mark : String) is
begin
Read_Data (Sets.Get_Socket (Set, Idx), Mark);
end Read_Data;
-----------------
-- Writer_Task --
-----------------
task body Writer_Task is
Index : Sets.Socket_Index;
begin
loop
accept Delayed_Send (Index : Sets.Socket_Index) do
Writer_Task.Index := Delayed_Send.Index;
end Delayed_Send;
select
accept Cancel_Delay;
or delay 0.25;
Sets.Get_Socket (Set, Index).Send (Data);
end select;
end loop;
exception
when E : others =>
Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (E));
end Writer_Task;
begin
Server.Bind (0);
Server.Listen;
for J in FDS'Range loop
FDS (J) := False;
end loop;
loop
begin
Client.Connect (Localhost (Server.Is_IPv6), Server.Get_Port);
Server.Accept_Socket (Peer);
exception
when E : Socket_Error =>
Put_Line
("At connection " & Ada.Exceptions.Exception_Information (E));
Put_Line ("Wait count" & Sets.Count (Set)'Img);
exit;
end;
Peer.Set_Timeout (0.0);
Client.Set_Timeout (0.0);
Client.Send (Data);
Peer.Send (Data);
Read_Data (Peer, "peer");
Read_Data (Client, "client");
Sets.Add (Set, Peer, Sets.Input);
Sets.Add (Set, Client, Sets.Input);
end loop;
loop
declare
Socket : Socket_Access;
begin
Sets.Wait (Set, 0.0, Cnt);
exit;
exception
when E : Socket_Error =>
declare
Prefix : constant String := "Poll (Size => ";
Suffix : constant String := ") error code 10024";
EM : constant String := Ada.Exceptions.Exception_Message (E);
begin
if EM'Length > Prefix'Length + Suffix'Length
and then EM (Prefix'Range) = Prefix
and then EM (EM'Last - Suffix'Length + 1 .. EM'Last) = Suffix
then
if OK_Previous then
Put_Line
("Too many sockets for poll "
& EM (Prefix'Last + 1 .. EM'Last - Suffix'Length));
OK_Previous := False;
end if;
else
Put_Line ("At wait " & EM);
end if;
end;
for J in 1 .. 2 loop
Sets.Remove_Socket (Set, Sets.Count (Set), Socket);
Socket.Shutdown;
Free (Socket);
end loop;
end;
end loop;
OK_Previous := True;
Put_Line ("Wait count" & Sets.Count (Set)'Img);
-- Test read timeout is not depend on others socket activities.
-- Actual for poll over posix select implementation.
for J in reverse 1 .. Sets.Count (Set) loop
declare
use Ada.Real_Time;
Peer_Idx : constant Sets.Socket_Index := J - 1 + J rem 2 * 2;
Socket : aliased Socket_Type'Class := Sets.Get_Socket (Set, J);
Enought : Boolean := False;
begin
for K in 1 .. Sets.Count (Set) loop
-- Write into all sockets except the peer one
if K /= Peer_Idx then
Sets.Get_Socket (Set, K).Send (Data);
end if;
end loop;
Socket.Set_Timeout (10.0);
declare
use Ada.Real_Time;
Stamp : constant Time := Clock;
begin
Writer_Task.Delayed_Send (Peer_Idx);
if Socket.Receive /= Data then
Put_Line ("Wrond data on timeout test");
end if;
if OK_Previous then
OK_Count := OK_Count - 1;
if OK_Count <= 0 then
Put_Line ("Stop timeout test, enought success");
Enought := True;
end if;
else
OK_Previous := True;
end if;
exception
when E : Socket_Error =>
Writer_Task.Cancel_Delay;
if Is_Timeout (E) then
Put_Line
("Too short timeout" & J'Img
& To_Duration (Clock - Stamp)'Img);
OK_Previous := False;
Error_Count := Error_Count - 1;
if Error_Count <= 0 then
Put_Line ("Stop timeout test, enought errors");
Enought := True;
end if;
else
Put_Line (Ada.Exceptions.Exception_Information (E));
Enought := True;
end if;
when E : others =>
Put_Line (Ada.Exceptions.Exception_Information (E));
Enought := True;
end;
for K in 1 .. Sets.Count (Set) loop
-- Read from all sockets except the tested
if K /= J then
Read_Data (K, "3");
end if;
end loop;
exit when Enought;
exception
when E : others =>
Put_Line (Ada.Exceptions.Exception_Information (E));
exit;
end;
end loop;
abort Writer_Task;
Put_Line ("Timeout test complete");
-- Test appropriate socket activation
for J in 1 .. Sets.Count (Set) loop
Sets.Get_Socket (Set, J - 1 + J rem 2 * 2).Send (Data);
Sets.Wait (Set, 0.25, Cnt);
if Cnt /= 1 then
Put_Line ("Wrong Cnt 1 /=" & Cnt'Img);
end if;
if Sets.Is_Read_Ready (Set, J) then
Read_Data (J, "1");
else
Put_Line ("Wrong ready state");
end if;
end loop;
Put_Line ("One socket active test complete");
-- Random reorder sockets to check poll independence from sockets order
for J in 1 .. Sets.Count (Set) loop
declare
S1, S2 : Socket_Access;
Idx : constant Sets.Socket_Index :=
Sets.Socket_Index (AWS.Utils.Random) rem (Sets.Count (Set) / 2 - 1)
* 2 + 1;
begin
Sets.Remove_Socket (Set, Idx, S1);
Sets.Remove_Socket (Set, Idx + 1, S2);
Sets.Add (Set, S1, Sets.Input);
Sets.Add (Set, S2, Sets.Input);
end;
end loop;
for J in reverse 1 .. Sets.Count (Set) / 2 loop
Sets.Get_Socket (Set, J * 2).Send (Data);
end loop;
Sets.Wait (Set, 0.25, Cnt);
if Cnt /= Sets.Count (Set) / 2 then
Put_Line ("Wrong count " & Cnt'Img);
end if;
for J in 1 .. Sets.Count (Set) loop
if Sets.Is_Read_Ready (Set, J) = (J rem 2 = 0) then
Put_Line ("Wrong Ready state");
end if;
if J rem 2 = 1 then
Read_Data (J, "2");
end if;
end loop;
Put_Line ("Half sockets active test complete");
exception
when others =>
abort Writer_Task;
raise;
end Max_Poll_Size;
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