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{
***************************************************************************
* *
* This source is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This code 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. See the GNU *
* General Public License for more details. *
* *
* A copy of the GNU General Public License is available on the World *
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
* obtain it by writing to the Free Software Foundation, *
* Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1335, USA. *
* *
***************************************************************************
}
unit ProcessList;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, LCLProc, UTF8Process;
type
{ The TProcessList is used by the IDE to store all running programs and
external tools, that are not watched. From time to time the IDE checks,
if the processes has terminated and will free them cleanly to avoid
zombies. }
TProcessList = class
private
FItems: TList; // list of TProcessUTF8
FFreeing: Boolean; // set wehn freeing stopped processes
function GetCount: integer;
function GetItems(Index: integer): TProcessUTF8;
public
constructor Create;
destructor Destroy; override;
function Add(NewProcess: TProcessUTF8): integer;
procedure Clear;
procedure FreeStoppedProcesses;
public
property Count: integer read GetCount;
property Items[Index: integer]: TProcessUTF8 read GetItems; default;
end;
function GetDefaultProcessList: TProcessList;
implementation
var
DefaultProcessList: TProcessList;
function GetDefaultProcessList: TProcessList;
begin
if DefaultProcessList=nil then DefaultProcessList:=TProcessList.Create;
Result:=DefaultProcessList;
end;
{ TProcessList }
function TProcessList.GetCount: integer;
begin
Result:=FItems.Count;
end;
function TProcessList.GetItems(Index: integer): TProcessUTF8;
begin
Result:=TProcessUTF8(FItems[Index]);
end;
constructor TProcessList.Create;
begin
FItems:=TList.Create;
end;
destructor TProcessList.Destroy;
begin
FreeStoppedProcesses;
Clear;
FItems.Free;
inherited Destroy;
end;
function TProcessList.Add(NewProcess: TProcessUTF8): integer;
begin
Result:=FItems.Add(NewProcess);
end;
procedure TProcessList.Clear;
var
i: Integer;
begin
for i:=0 to FItems.Count-1 do
Items[i].Free;
FItems.Clear;
end;
procedure TProcessList.FreeStoppedProcesses;
var
AProcess: TProcessUTF8;
i: Integer;
begin
// waitonexit or free may trigger another idle
if FFreeing then Exit;
FFreeing := True;
try
for i:=FItems.Count-1 downto 0 do begin
AProcess:=Items[i];
if AProcess.Running then continue;
try
try
AProcess.WaitOnExit;
AProcess.Free;
finally
FItems.Delete(i);
end;
except
on E: Exception do begin
DebugLn('Error freeing stopped process: ',E.Message);
end;
end;
end;
finally
FFreeing := False;
end;
end;
initialization
DefaultProcessList:=nil;
finalization
DefaultProcessList.Free;
DefaultProcessList:=nil;
end.
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