Как узнать состояние памяти?

Code:

unit MemForm;

interface

uses

Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,

Grids, ExtCtrls, StdCtrls;

type

TForm1 = class(TForm)

   StringGrid1: TStringGrid;

   Timer1: TTimer;

   StringGrid2: TStringGrid;

   BtnString: TButton;

   BtnStringList: TButton;

   BtnForm: TButton;

   BtnBigAlloc: TButton;

   BtnSmallAlloc: TButton;

   procedure FormCreate(Sender: TObject);

   procedure Timer1Timer(Sender: TObject);

   procedure BtnStringClick(Sender: TObject);

   procedure BtnStringListClick(Sender: TObject);

   procedure BtnFormClick(Sender: TObject);

   procedure BtnSmallAllocClick(Sender: TObject);

   procedure BtnBigAllocClick(Sender: TObject);

private

   procedure UpdateStatus;

public

   s: string;

   sl: TStringList;

   f: TForm;

end;

var

Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.UpdateStatus;

var

MemStatus: TMemoryStatus;

HeapStatus: THeapStatus;

begin

MemStatus.dwLength := sizeof(TMemoryStatus);

GlobalMemoryStatus(MemStatus);

with MemStatus do

begin

   // load

   StringGrid1.Cells[1, 0] := IntToStr(dwMemoryLoad) + '%';

   // RAM (total, free, load)

   StringGrid1.Cells[1, 1] := FloatToStrF(

     dwTotalPhys / 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid1.Cells[1, 2] := FloatToStrF(

     dwAvailPhys / 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid1.Cells[1, 3] := IntToStr(100 -

     dwAvailPhys div (dwTotalPhys div 100)) + '%';

   // page file (total, free, load)

   StringGrid1.Cells[1, 4] := FloatToStrF(

     dwTotalPageFile / 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid1.Cells[1, 5] := FloatToStrF(

     dwAvailPageFile / 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid1.Cells[1, 6] := IntToStr(100 -

     dwAvailPageFile div (dwTotalPageFile div 100)) + '%';

   // page file (total, used, free)

   StringGrid1.Cells[1, 7] := FloatToStrF(

     dwTotalVirtual / 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid1.Cells[1, 8] := FloatToStrF(

     dwAvailVirtual / 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid1.Cells[1, 9] := FloatToStrF(

     (dwTotalVirtual - dwAvailVirtual) / 1024,

     ffNumber, 20, 0) + ' Kbytes';

end; // with MemStatus

HeapStatus := GetHeapStatus;

with HeapStatus do

begin

   StringGrid2.Cells[1, 0] := FloatToStrF(

     TotalAddrSpace div 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid2.Cells[1, 1] := FloatToStrF(

     TotalUncommitted div 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid2.Cells[1, 2] := FloatToStrF(

     TotalCommitted div 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid2.Cells[1, 3] := FloatToStrF(

     TotalFree div 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid2.Cells[1, 4] := FloatToStrF(

     TotalAllocated div 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid2.Cells[1, 5] := IntToStr(

     TotalAllocated div (TotalAddrSpace div 100)) + '%';

   StringGrid2.Cells[1, 6] := FloatToStrF(

     FreeSmall div 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid2.Cells[1, 7] := FloatToStrF(

     FreeBig div 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid2.Cells[1, 8] := FloatToStrF(

     Unused div 1024,

     ffNumber, 20, 0) + ' Kbytes';

   StringGrid2.Cells[1, 9] := FloatToStrF(

     Overhead div 1024,

     ffNumber, 20, 0) + ' Kbytes';

end;

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

StringGrid1.Cells[0, 0] := 'Memory load';

StringGrid1.Cells[0, 1] := 'Physical memory';

StringGrid1.Cells[0, 2] := 'Free physical memory';

StringGrid1.Cells[0, 3] := 'RAM load';

StringGrid1.Cells[0, 4] := 'Maximum size of paging file';

StringGrid1.Cells[0, 5] := 'Available in paging file';

StringGrid1.Cells[0, 6] := 'Paging file load';

StringGrid1.Cells[0, 7] := 'Virtual address space';

StringGrid1.Cells[0, 8] := 'Free in address space';

StringGrid1.Cells[0, 9] := 'Used address space';

StringGrid2.Cells[0, 0] := 'Available address space ';

StringGrid2.Cells[0, 1] := 'Uncommitted portion';

StringGrid2.Cells[0, 2] := 'Committed portion';

StringGrid2.Cells[0, 3] := 'Free portion';

StringGrid2.Cells[0, 4] := 'Allocated portion';

StringGrid2.Cells[0, 5] := 'Address space load';

StringGrid2.Cells[0, 6] := 'Total small free blocks';

StringGrid2.Cells[0, 7] := 'Total big free blocks';

StringGrid2.Cells[0, 8] := 'Other unused blocks';

StringGrid2.Cells[0, 9] := 'Total overhead';

UpdateStatus;

end;

procedure TForm1.Timer1Timer(Sender: TObject);

begin

UpdateStatus;

end;

procedure TForm1.BtnStringClick(Sender: TObject);

begin

// 10 megabytes

SetLength(s, 10000000);

UpdateStatus;

end;

procedure TForm1.BtnStringListClick(Sender: TObject);

var

I: Integer;

begin

sl := TStringList.Create;

// add one thousand strings

for I := 0 to 1000 do

   sl.Add('hello');

// destroy some of them

for I := 300 downto 1 do

   sl.Delete(I * 3);

UpdateStatus;

end;

procedure TForm1.BtnFormClick(Sender: TObject);

var

I: Integer;

begin

// create ten forms

for I := 1 to 10 do

   F := TForm.Create(Application);

UpdateStatus;

end;

procedure TForm1.BtnSmallAllocClick(Sender: TObject);

var

P: Pointer;

begin

GetMem(P, 100);

Integer(P^) := 10;

UpdateStatus;

end;

procedure TForm1.BtnBigAllocClick(Sender: TObject);

var

P: Pointer;

begin

GetMem(P, 100000);

Integer(P^) := 10;

UpdateStatus;

end;

end.