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uThread.pas
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uThread.pas
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unit uThread;
interface
uses
System.Classes, System.SysUtils,
System.Generics.Collections;
type
TLifeThread<T> = class(TThread)
private
FTasks : TList<T>;
FFailedTasks : TList<T>;
FSuccessTasks : TList<T>;
FOnPause : TNotifyEvent;
FOnExecute : TFunc<T, Boolean>;
FOnExecuteStep : TProc<T,Boolean>;
protected
procedure Execute; override;
procedure DoOnPause;
procedure DoOnExecute(const AValue : T);
procedure DoStart;
procedure DoStop;
procedure DoOnExecuteStep(const AValue : T; ASuccess : Boolean);
public
constructor Create; overload;
constructor Create(AThreadFunc: TFunc<T, Boolean>); overload;
destructor Destroy; override;
procedure AddTask(const ATasks : TArray<T>);
procedure ExecuteFailedTask;
property OnPause : TNotifyEvent read FOnPause write FOnPause;
property OnExecute : TFunc<T, Boolean> read FOnExecute write FOnExecute;
property OnExecuteStep : TProc<T,Boolean> read FOnExecuteStep write FOnExecuteStep;
end;
implementation
{ TLifeThread<T> }
procedure TLifeThread<T>.AddTask(const ATasks: TArray<T>);
begin
TThread.Synchronize(
nil,
procedure
var
LValue : T;
begin
if Terminated then
Exit;
for LValue in ATasks do
if not FTasks.Contains(LValue) and not FSuccessTasks.Contains(LValue) and
not FFailedTasks.Contains(LValue) then
FTasks.Add(LValue);
end
);
DoStart;
end;
constructor TLifeThread<T>.Create(AThreadFunc: TFunc<T, Boolean>);
begin
Self.Create;
OnExecute := AThreadFunc;
end;
constructor TLifeThread<T>.Create;
begin
inherited Create(True);
//FreeOnTerminate := True;
FOnPause := nil;
FOnExecute := nil;
OnExecuteStep := nil;
FTasks := TList<T>.Create;
FFailedTasks := TList<T>.Create;
FSuccessTasks := TList<T>.Create;
end;
destructor TLifeThread<T>.Destroy;
begin
FreeAndNil(FTasks);
FreeAndNil(FFailedTasks);
FreeAndNil(FSuccessTasks);
//FTasks.Free;
//FFailedTasks.Free;
//FSuccessTasks.Free;
inherited;
end;
procedure TLifeThread<T>.DoOnExecute(const AValue : T);
var
IsExecuted : Boolean;
begin
Assert(not Terminated);
IsExecuted := not Terminated and Assigned(FOnExecute)and FOnExecute(AValue);
TThread.Synchronize(
nil,
procedure
begin
if Terminated then
Exit;
if IsExecuted then
FSuccessTasks.Add(AValue)
else
FFailedTasks.Add(AValue);
FTasks.Remove(AValue);
end
);
DoOnExecuteStep(AValue, IsExecuted);
end;
procedure TLifeThread<T>.DoOnExecuteStep(const AValue: T; ASuccess: Boolean);
begin
if Assigned(FOnExecuteStep) then
FOnExecuteStep(AValue, ASuccess);
end;
procedure TLifeThread<T>.DoOnPause;
begin
if Assigned(FOnPause) then
FOnPause(Self);
end;
procedure TLifeThread<T>.DoStart;
begin
if Terminated then
Exit;
if self.Suspended and (FTasks.Count > 0) then
begin
Self.Suspended := False;
end;
end;
procedure TLifeThread<T>.DoStop;
begin
if Terminated then
Exit;
if self.Started and (FTasks.Count < 1) then
begin
DoOnPause;
self.Sleep(1000);
end;
end;
procedure TLifeThread<T>.Execute;
var
LValue : T;
LTasks : TArray<T>;
begin
inherited;
while not Terminated do
begin
LTasks := FTasks.ToArray;
for LValue in LTasks do
if not Terminated then
DoOnExecute(LValue)
else
Break;
DoStop;
end;
end;
procedure TLifeThread<T>.ExecuteFailedTask;
var
LTasks : TArray<T>;
begin
TThread.Synchronize(
nil,
procedure
begin
if Terminated then
Exit;
LTasks := FFailedTasks.ToArray;
FFailedTasks.Clear;
Self.AddTask(LTasks);
end);
end;
end.