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Comment:tools/smaz: genericize Parallel_Evaluate_Dictionary
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SHA1: 79a36ec95798ba0f668463f2740ea175194294e1
User & Date: nat on 2016-12-02 21:12:32
Other Links: manifest | tags
Context
2016-12-03
22:29
tools/smaz: genericize Evaluate_Dictionary check-in: bc86bc41ee user: nat tags: trunk
2016-12-02
21:12
tools/smaz: genericize Parallel_Evaluate_Dictionary check-in: 79a36ec957 user: nat tags: trunk
2016-12-01
20:10
tools/smaz: refactor dictionary processing in a dedicated procedure check-in: ef7006737f user: nat tags: trunk
Changes
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Modified tools/smaz.adb from [d614874f0e] to [876acf9894].

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------------------------------------------------------------------------------
-- Command Line Interface for primitives in Natools.Smaz.Tools.             --
------------------------------------------------------------------------------

with Ada.Characters.Latin_1;
with Ada.Command_Line;
with Ada.Containers.Indefinite_Doubly_Linked_Lists;
with Ada.Containers.Indefinite_Holders;
with Ada.Streams;
with Ada.Strings.Fixed;
with Ada.Strings.Unbounded;
with Ada.Text_IO.Text_Streams;
with Natools.Getopt_Long;
with Natools.Parallelism;
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      Input_Texts : in Natools.Smaz_Tools.String_Lists.List;
      Job_Count : in Natural;
      Method : in Methods.Enum)
     return Natools.Smaz_256.Dictionary;
      --  Optimize the dictionary on Input_Texts, starting with Base and
      --  adding substrings from Pending_Words.

   procedure Parallel_Evaluate_Dictionary
     (Job_Count : in Positive;
      Dict : in Natools.Smaz_256.Dictionary;
      Corpus : in Natools.Smaz_Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Tools_256.Dictionary_Counts);
      --  Return the same results as Natools.Smaz.Tools.Evaluate_Dictionary,
      --  but hopefully more quickly, using Job_Count tasks.

   procedure Print_Dictionary
     (Filename : in String;
      Dictionary : in Natools.Smaz_256.Dictionary;
      Hash_Package_Name : in String := "");
   procedure Print_Dictionary
     (Output : in Ada.Text_IO.File_Type;
      Dictionary : in Natools.Smaz_256.Dictionary;
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   function To_Dictionary
     (Handler : in Callback'Class;
      Input : in Natools.Smaz_Tools.String_Lists.List)
     return Natools.Smaz_256.Dictionary;
      --  Convert the input into a dictionary given the option in Handler


   generic
      type Dictionary (<>) is private;
      type Dictionary_Entry is (<>);
      type String_Count is range <>;

      type Dictionary_Counts is array (Dictionary_Entry) of String_Count;

      with package String_Lists
        is new Ada.Containers.Indefinite_Doubly_Linked_Lists (String);

      with procedure Evaluate_Dictionary_Partial
        (Dict : in Dictionary;
         Corpus_Entry : in String;
         Compressed_Size : in out Ada.Streams.Stream_Element_Count;
         Counts : in out Dictionary_Counts);

   package Dictionary_Subprograms is

      procedure Parallel_Evaluate_Dictionary
        (Job_Count : in Positive;
         Dict : in Dictionary;
         Corpus : in String_Lists.List;
         Compressed_Size : out Ada.Streams.Stream_Element_Count;
         Counts : out Dictionary_Counts);
         --  Return the same results as Natools.Smaz.Tools.Evaluate_Dictionary,
         --  but hopefully more quickly, using Job_Count tasks.

   end Dictionary_Subprograms;


   package body Dictionary_Subprograms is

      procedure Parallel_Evaluate_Dictionary
        (Job_Count : in Positive;
         Dict : in Dictionary;
         Corpus : in String_Lists.List;
         Compressed_Size : out Ada.Streams.Stream_Element_Count;
         Counts : out Dictionary_Counts)
      is
         type Result_Values is record
            Compressed_Size : Ada.Streams.Stream_Element_Count;
            Counts : Dictionary_Counts;
         end record;

         procedure Initialize (Result : in out Result_Values);

         procedure Get_Next_Job
           (Global : in out String_Lists.Cursor;
            Job : out String_Lists.Cursor;
            Terminated : out Boolean);

         procedure Do_Job
           (Result : in out Result_Values;
            Job : in String_Lists.Cursor);

         procedure Gather_Result
           (Global : in out String_Lists.Cursor;
            Partial : in Result_Values);


         procedure Initialize (Result : in out Result_Values) is
         begin
            Result := (Compressed_Size => 0,
                       Counts => (others => 0));
         end Initialize;


         procedure Get_Next_Job
           (Global : in out String_Lists.Cursor;
            Job : out String_Lists.Cursor;
            Terminated : out Boolean) is
         begin
            Job := Global;
            Terminated := not String_Lists.Has_Element (Global);
            if not Terminated then
               String_Lists.Next (Global);
            end if;
         end Get_Next_Job;


         procedure Do_Job
           (Result : in out Result_Values;
            Job : in String_Lists.Cursor) is
         begin
            Evaluate_Dictionary_Partial
              (Dict,
               String_Lists.Element (Job),
               Result.Compressed_Size,
               Result.Counts);
         end Do_Job;


         procedure Gather_Result
           (Global : in out String_Lists.Cursor;
            Partial : in Result_Values)
         is
            pragma Unreferenced (Global);
            use type Ada.Streams.Stream_Element_Count;
            use type Natools.Smaz_Tools.String_Count;
         begin
            Compressed_Size := Compressed_Size + Partial.Compressed_Size;

            for I in Counts'Range loop
               Counts (I) := Counts (I) + Partial.Counts (I);
            end loop;
         end Gather_Result;


         procedure Parallel_Run
           is new Natools.Parallelism.Per_Task_Accumulator_Run
              (String_Lists.Cursor, Result_Values, String_Lists.Cursor);

         Cursor : String_Lists.Cursor := String_Lists.First (Corpus);
      begin
         Compressed_Size := 0;
         Counts := (others => 0);
         Parallel_Run (Cursor, Job_Count);
      end Parallel_Evaluate_Dictionary;

   end Dictionary_Subprograms;


   package Dict_256 is new Dictionary_Subprograms
     (Dictionary => Natools.Smaz_256.Dictionary,
      Dictionary_Entry => Ada.Streams.Stream_Element,
      String_Count => Natools.Smaz_Tools.String_Count,
      Dictionary_Counts => Tools_256.Dictionary_Counts,
      String_Lists => Natools.Smaz_Tools.String_Lists,
      Evaluate_Dictionary_Partial => Tools_256.Evaluate_Dictionary_Partial);


   overriding procedure Option
     (Handler  : in out Callback;
      Id       : in Options.Id;
      Argument : in String) is
   begin
      case Id is
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                  (Natools.Smaz_256.Dict_Entry (Actual_Dict, I), True)
               & " ->" & Natural'Image (Natools.Smaz_Tools.Trie_Search
                  (Natools.Smaz_256.Dict_Entry (Actual_Dict, I))));
         end if;
      end loop;

      if Job_Count > 0 then
         Parallel_Evaluate_Dictionary (Job_Count,
         Dict_256.Parallel_Evaluate_Dictionary (Job_Count,
            Actual_Dict, Corpus, Compressed_Size, Counts);
      else
         Tools_256.Evaluate_Dictionary
           (Actual_Dict, Corpus, Compressed_Size, Counts);
      end if;
   end Evaluate_Dictionary;
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            Method,
            Running);
      end loop;

      return Holder.Element;
   end Optimize_Dictionary;


   procedure Parallel_Evaluate_Dictionary
     (Job_Count : in Positive;
      Dict : in Natools.Smaz_256.Dictionary;
      Corpus : in Natools.Smaz_Tools.String_Lists.List;
      Compressed_Size : out Ada.Streams.Stream_Element_Count;
      Counts : out Tools_256.Dictionary_Counts)
   is
      package String_Lists renames Natools.Smaz_Tools.String_Lists;

      type Result_Values is record
         Compressed_Size : Ada.Streams.Stream_Element_Count;
         Counts : Tools_256.Dictionary_Counts;
      end record;

      procedure Initialize (Result : in out Result_Values);

      procedure Get_Next_Job
        (Global : in out String_Lists.Cursor;
         Job : out String_Lists.Cursor;
         Terminated : out Boolean);

      procedure Do_Job
        (Result : in out Result_Values;
         Job : in String_Lists.Cursor);

      procedure Gather_Result
        (Global : in out String_Lists.Cursor;
         Partial : in Result_Values);


      procedure Initialize (Result : in out Result_Values) is
      begin
         Result := (Compressed_Size => 0,
                    Counts => (others => 0));
      end Initialize;


      procedure Get_Next_Job
        (Global : in out String_Lists.Cursor;
         Job : out String_Lists.Cursor;
         Terminated : out Boolean) is
      begin
         Job := Global;
         Terminated := not String_Lists.Has_Element (Global);
         if not Terminated then
            String_Lists.Next (Global);
         end if;
      end Get_Next_Job;


      procedure Do_Job
        (Result : in out Result_Values;
         Job : in String_Lists.Cursor) is
      begin
         Tools_256.Evaluate_Dictionary_Partial
           (Dict,
            String_Lists.Element (Job),
            Result.Compressed_Size,
            Result.Counts);
      end Do_Job;


      procedure Gather_Result
        (Global : in out String_Lists.Cursor;
         Partial : in Result_Values)
      is
         pragma Unreferenced (Global);
         use type Ada.Streams.Stream_Element_Count;
         use type Natools.Smaz_Tools.String_Count;
      begin
         Compressed_Size := Compressed_Size + Partial.Compressed_Size;

         for I in Counts'Range loop
            Counts (I) := Counts (I) + Partial.Counts (I);
         end loop;
      end Gather_Result;


      procedure Parallel_Run
        is new Natools.Parallelism.Per_Task_Accumulator_Run
           (String_Lists.Cursor, Result_Values, String_Lists.Cursor);

      Cursor : String_Lists.Cursor := String_Lists.First (Corpus);
   begin
      Compressed_Size := 0;
      Counts := (others => 0);
      Parallel_Run (Cursor, Job_Count);
   end Parallel_Evaluate_Dictionary;


   procedure Print_Dictionary
     (Filename : in String;
      Dictionary : in Natools.Smaz_256.Dictionary;
      Hash_Package_Name : in String := "") is
   begin
      if Filename = "-" then
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      Sx_Output : Natools.S_Expressions.Printers.Canonical
        (Ada.Text_IO.Text_Streams.Stream (Ada.Text_IO.Current_Output));
      Ada_Dictionary : constant String
        := Ada.Strings.Unbounded.To_String (Handler.Ada_Dictionary);
      Hash_Package : constant String
        := Ada.Strings.Unbounded.To_String (Handler.Hash_Package);
   begin
      Natools.Smaz_Tools.Set_Dictionary_For_Trie_Search (Word_List);
      Dictionary.Hash := Natools.Smaz_Tools.Linear_Search'Access;
      Dictionary.Hash := Natools.Smaz_Tools.Trie_Search'Access;
      Natools.Smaz_Tools.List_For_Linear_Search := Word_List;

      if Ada_Dictionary'Length > 0 then
         Print_Dictionary (Ada_Dictionary, Dictionary, Hash_Package);
      end if;

      if Hash_Package'Length > 0 then
         Natools.Smaz_Tools.GNAT.Build_Perfect_Hash (Word_List, Hash_Package);
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