Free Pascal (like Delphi) provide some useful functions to watch heap memory state in your application.

function GetHeapStatus: THeapStatus;

THeapStatus is documented here

Example of using this function is below

program ProgWatchMem;

uses
  Math, FGL;

type
  TLongIntArr = array of LongInt; // LongInt is a 4-byte signed integer
  PLongIntArr = ^TLongIntArr;
  TMySortedMap = specialize …

Let's perform a simple benchmark testing the random and sequential access to arrays and lists. I would like to compare:

• static array with predefined size (allocated on stack)
• TList container class (allocated on heap)
• dynamic array (allocated on heap)
• generic Delphi TList or Free Pascal TFPGList (allocated on heap)

I …

Le type "guid" (uniqueidentifier) a été introduit dans la version 7/2000 de SQL Server. Etant utilisé pour les clés primaires ce type avait apporté plusieurs avantages (et inconvénients, bien sur) in implémentation de BDD. En 2002, j'ai fait un essais de performance en comparaison les différents types des données …