[NumLock]

Код:

unit Unit1;

interface

uses
  SyncObjs,
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TMyThread = class(TThread)
    ThreadIndex: Integer;
    Log: String;
    constructor Create(AThreadIndex: Integer);
    procedure Execute; override;
    procedure UpdateLog;
  end;

  TForm1 = class(TForm)
    Memo1: TMemo;
    Memo2: TMemo;
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
    CriticalSection: TCriticalSection;
    CurrentIndex: Integer;
    function GetMemo(var S: String): Boolean;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  Randomize;
  CriticalSection:=TCriticalSection.Create;
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  CriticalSection.Free;
end;

function TForm1.GetMemo(var S: String): Boolean;
begin
  CriticalSection.Enter;
  try
    Result:=CurrentIndex<Memo1.Lines.Count;
    if Result then
    begin
      S:=Memo1.Lines[CurrentIndex];
      CurrentIndex:=CurrentIndex+1;
    end;
  finally
    CriticalSection.Leave;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
const
  N = 4; 
var
  i: Integer;
begin
  Memo2.Clear;
  CurrentIndex:=0;
  for i:=1 to N do TMyThread.Create(i);
end;

{ TMyThread }

constructor TMyThread.Create(AThreadIndex: Integer);
begin
  ThreadIndex:=AThreadIndex;
  inherited Create(True);
  FreeOnTerminate:=True;
  Resume;
end;

procedure TMyThread.Execute;
var
  s: String;
begin
  while Form1.GetMemo(s) do
  begin
    Sleep(Random(50));
    Log:=s;
    Synchronize(UpdateLog);
  end;
end;

procedure TMyThread.UpdateLog;
begin
  Form1.Memo2.Lines.Add('Thread '+IntToStr(ThreadIndex)+' : '+#9+Log);
end;

end.

http://zalil.ru/34706268

[babay89]

Сообщение от NumLock

Код:

unit Unit1;

interface

uses
  SyncObjs,
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TMyThread = class(TThread)
    ThreadIndex: Integer;
    Log: String;
    constructor Create(AThreadIndex: Integer);
    procedure Execute; override;
    procedure UpdateLog;
  end;

  TForm1 = class(TForm)
    Memo1: TMemo;
    Memo2: TMemo;
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
    CriticalSection: TCriticalSection;
    CurrentIndex: Integer;
    function GetMemo(var S: String): Boolean;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  Randomize;
  CriticalSection:=TCriticalSection.Create;
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  CriticalSection.Free;
end;

function TForm1.GetMemo(var S: String): Boolean;
begin
  CriticalSection.Enter;
  try
    Result:=CurrentIndex<Memo1.Lines.Count;
    if Result then
    begin
      S:=Memo1.Lines[CurrentIndex];
      CurrentIndex:=CurrentIndex+1;
    end;
  finally
    CriticalSection.Leave;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
const
  N = 4; 
var
  i: Integer;
begin
  Memo2.Clear;
  CurrentIndex:=0;
  for i:=1 to N do TMyThread.Create(i);
end;

{ TMyThread }

constructor TMyThread.Create(AThreadIndex: Integer);
begin
  ThreadIndex:=AThreadIndex;
  inherited Create(True);
  FreeOnTerminate:=True;
  Resume;
end;

procedure TMyThread.Execute;
var
  s: String;
begin
  while Form1.GetMemo(s) do
  begin
    Sleep(Random(50));
    Log:=s;
    Synchronize(UpdateLog);
  end;
end;

procedure TMyThread.UpdateLog;
begin
  Form1.Memo2.Lines.Add('Thread '+IntToStr(ThreadIndex)+' : '+#9+Log);
end;

end.

http://zalil.ru/34706268

Спасибо огромное! Теперь все работает как часы. Это то, что мне нужно было.