156 lines
4.4 KiB
Ada
156 lines
4.4 KiB
Ada
----------------------------------------------------------------
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-- ZLib for Ada thick binding. --
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-- --
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-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
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-- --
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-- Open source license information is in the zlib.ads file. --
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----------------------------------------------------------------
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-- Continuous test for ZLib multithreading. If the test would fail
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-- we should provide thread safe allocation routines for the Z_Stream.
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--
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-- Id: mtest.adb,v 1.4 2004/07/23 07:49:54 vagul Exp
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with ZLib;
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with Ada.Streams;
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with Ada.Numerics.Discrete_Random;
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with Ada.Text_IO;
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with Ada.Exceptions;
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with Ada.Task_Identification;
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procedure MTest is
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use Ada.Streams;
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use ZLib;
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Stop : Boolean := False;
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pragma Atomic (Stop);
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subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
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package Random_Elements is
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new Ada.Numerics.Discrete_Random (Visible_Symbols);
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task type Test_Task;
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task body Test_Task is
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Buffer : Stream_Element_Array (1 .. 100_000);
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Gen : Random_Elements.Generator;
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Buffer_First : Stream_Element_Offset;
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Compare_First : Stream_Element_Offset;
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Deflate : Filter_Type;
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Inflate : Filter_Type;
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procedure Further (Item : in Stream_Element_Array);
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procedure Read_Buffer
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(Item : out Ada.Streams.Stream_Element_Array;
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Last : out Ada.Streams.Stream_Element_Offset);
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-------------
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-- Further --
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-------------
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procedure Further (Item : in Stream_Element_Array) is
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procedure Compare (Item : in Stream_Element_Array);
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-------------
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-- Compare --
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-------------
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procedure Compare (Item : in Stream_Element_Array) is
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Next_First : Stream_Element_Offset := Compare_First + Item'Length;
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begin
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if Buffer (Compare_First .. Next_First - 1) /= Item then
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raise Program_Error;
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end if;
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Compare_First := Next_First;
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end Compare;
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procedure Compare_Write is new ZLib.Write (Write => Compare);
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begin
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Compare_Write (Inflate, Item, No_Flush);
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end Further;
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-----------------
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-- Read_Buffer --
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-----------------
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procedure Read_Buffer
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(Item : out Ada.Streams.Stream_Element_Array;
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Last : out Ada.Streams.Stream_Element_Offset)
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is
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Buff_Diff : Stream_Element_Offset := Buffer'Last - Buffer_First;
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Next_First : Stream_Element_Offset;
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begin
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if Item'Length <= Buff_Diff then
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Last := Item'Last;
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Next_First := Buffer_First + Item'Length;
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Item := Buffer (Buffer_First .. Next_First - 1);
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Buffer_First := Next_First;
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else
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Last := Item'First + Buff_Diff;
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Item (Item'First .. Last) := Buffer (Buffer_First .. Buffer'Last);
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Buffer_First := Buffer'Last + 1;
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end if;
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end Read_Buffer;
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procedure Translate is new Generic_Translate
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(Data_In => Read_Buffer,
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Data_Out => Further);
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begin
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Random_Elements.Reset (Gen);
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Buffer := (others => 20);
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Main : loop
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for J in Buffer'Range loop
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Buffer (J) := Random_Elements.Random (Gen);
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Deflate_Init (Deflate);
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Inflate_Init (Inflate);
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Buffer_First := Buffer'First;
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Compare_First := Buffer'First;
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Translate (Deflate);
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if Compare_First /= Buffer'Last + 1 then
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raise Program_Error;
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end if;
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Ada.Text_IO.Put_Line
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(Ada.Task_Identification.Image
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(Ada.Task_Identification.Current_Task)
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& Stream_Element_Offset'Image (J)
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& ZLib.Count'Image (Total_Out (Deflate)));
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Close (Deflate);
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Close (Inflate);
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exit Main when Stop;
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end loop;
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end loop Main;
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exception
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when E : others =>
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Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (E));
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Stop := True;
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end Test_Task;
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Test : array (1 .. 4) of Test_Task;
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pragma Unreferenced (Test);
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Dummy : Character;
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begin
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Ada.Text_IO.Get_Immediate (Dummy);
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Stop := True;
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end MTest;
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