delphiにおける臨界操作方法

 
var
    FLock:TRTLCriticalSection; // 
begin
   InitializeCriticalSection(FLock); // 
   EnterCriticalSection(FLock); // 
   LeaveCriticalSection(FLock); // 
   DeleteCriticalSection(FLock);// 
end;
//CLASS 
 TRegGroups = class
 private
    .............
    FLock: TRTLCriticalSection;
    ................
 public
    ...........
    constructor Create;
    destructor Destroy; override;
    procedure Lock; 
    procedure Unlock;
    ................
 end;
 
var
 RegGroups: TRegGroups;
 
constructor TRegGroups.Create;
begin
 inherited Create;
 ................
 InitializeCriticalSection(FLock);
 .....................
end;
 
destructor TRegGroups.Destroy;
begin
 DeleteCriticalSection(FLock);
 .......................
 inherited;
end;
 
procedure TRegGroups.Lock;
begin
 EnterCriticalSection(FLock);
end;
 
procedure TRegGroups.Unlock;
begin
 LeaveCriticalSection(FLock);
end;