fpc/rtl/objpas/sysutils/systhrdh.inc
2005-09-23 13:07:11 +00:00

41 lines
1.3 KiB
PHP

{
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2001 by the Free Pascal development team
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
type
IReadWriteSync = interface
['{7B108C52-1D8F-4CDB-9CDF-57E071193D3F}']
procedure BeginRead;
procedure EndRead;
function BeginWrite : boolean;
procedure EndWrite;
end;
TMultiReadExclusiveWriteSynchronizer = class(TInterfacedObject,IReadWriteSync)
private
crit : TRtlCriticalSection;
public
constructor Create; virtual;
destructor Destroy; override;
function Beginwrite : boolean;
procedure Endwrite;
procedure Beginread;
procedure Endread;
end;
function InterLockedIncrement (var Target: longint) : longint;
function InterLockedDecrement (var Target: longint) : longint;
function InterLockedExchange (var Target: longint;Source : longint) : longint;
function InterLockedExchangeAdd (var Target: longint;Source : longint) : longint;