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{
This file is part of the Free Component Library (FCL)
Copyright (c) 1999-2002 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.
**********************************************************************}
{****************************************************************************}
{* TThread *}
{****************************************************************************}
{$WARNING This file is only a stub, and will not work!}
const
ThreadCount: longint = 0;
(* Implementation of exported functions *)
procedure AddThread (T: TThread);
begin
Inc (ThreadCount);
end;
procedure RemoveThread (T: TThread);
begin
Dec (ThreadCount);
end;
procedure TThread.CallOnTerminate;
begin
FOnTerminate (Self);
end;
function TThread.GetPriority: TThreadPriority;
var
{ PTIB: PThreadInfoBlock;
PPIB: PProcessInfoBlock;}
I: TThreadPriority;
begin
{
DosGetInfoBlocks (@PTIB, @PPIB);
with PTIB^.TIB2^ do
if Priority >= $300 then GetPriority := tpTimeCritical else
if Priority < $200 then GetPriority := tpIdle else
begin
I := Succ (Low (TThreadPriority));
while (I < High (TThreadPriority)) and
(Priority - Priorities [I] <= Priorities [Succ (I)] - Priority) do Inc (I);
GetPriority := I;
end;
}
end;
procedure TThread.SetPriority(Value: TThreadPriority);
{var
PTIB: PThreadInfoBlock;
PPIB: PProcessInfoBlock;}
begin
{ DosGetInfoBlocks (@PTIB, @PPIB);}
(*
PTIB^.TIB2^.Priority := Priorities [Value];
*)
{
DosSetPriority (2, High (Priorities [Value]),
Low (Priorities [Value]) - PTIB^.TIB2^.Priority, FHandle);}
end;
procedure TThread.SetSuspended(Value: Boolean);
begin
if Value <> FSuspended then
begin
if Value then Suspend else Resume;
end;
end;
procedure TThread.DoTerminate;
begin
if Assigned (FOnTerminate) then Synchronize (@CallOnTerminate);
end;
constructor TThread.Create(CreateSuspended: Boolean;
const StackSize: SizeUInt = DefaultStackSize);
var
Flags: cardinal;
begin
inherited Create;
AddThread (Self);
{
FSuspended := CreateSuspended;
Flags := dtStack_Commited;
if FSuspended then Flags := Flags or dtSuspended;
if DosCreateThread (cardinal (FThreadID), @ThreadProc, pointer (Self),
Flags, 16384) <> 0 then
begin
FFinished := true;
Destroy;
end else FHandle := FThreadID;
IsMultiThread := true;
FFatalException := nil;
}
end;
destructor TThread.Destroy;
begin
if not FFinished and not Suspended then
begin
Terminate;
WaitFor;
end;
{
if FHandle <> -1 then DosKillThread (cardinal (FHandle));
FFatalException.Free;
FFatalException := nil;
inherited Destroy;
RemoveThread (Self);
}
end;
procedure TThread.Resume;
begin
{ FSuspended := not (DosResumeThread (cardinal (FHandle)) = 0);}
end;
procedure TThread.Suspend;
begin
{ FSuspended := DosSuspendThread (cardinal (FHandle)) = 0;}
end;
procedure TThread.Terminate;
begin
FTerminated := true;
end;
function TThread.WaitFor: Integer;
var
FH: cardinal;
begin
{ WaitFor := DosWaitThread (FH, dtWait);}
end;
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