[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

Multi Threading???

Posted on 1998-11-26
2
Medium Priority
?
217 Views
Last Modified: 2012-05-04
I've created a simple TThread object that downloads a file via FTP protocol.  Everything seems to be working fine except that the main form is very sluggish while threads are running.  Also threads tend to freeze system at end of downlaod.  Any help or pointers to thread documentation would be appreciated.

Here's the code:

unit uFtpThread;

interface

uses
  Classes, agFtp, agFTPCls;

type
  TFtpThread = class(TThread)
  private
    FTargetFileName : String;
    FLocalFileName : String;
    FFtp : TagFtp;
    procedure DownloadFile;
  protected
    procedure Execute; override;
  public
    constructor create(Ftp : TagFtp; sTargetFilename, sLocalFileName : String);
  end;

implementation

constructor TFtpThread.create(Ftp: TagFtp; sTargetFilename,
  sLocalFileName: String);
begin
  inherited Create(False);
  FreeOnTerminate := True;
  FFtp := Ftp;
  FTargetFileName := sTargetFilename;
  FLocalFileName := sLocalFileName;
end;

procedure TFtpThread.DownloadFile;
begin
  FFtp.RetrieveFile(FTargetFileName, FLocalFileName);
end;

procedure TFtpThread.Execute;
begin
  DownloadFile;
end;

end.
0
Comment
Question by:sparklin
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 

Author Comment

by:sparklin
ID: 1348162
Edited text of question
0
 
LVL 4

Accepted Solution

by:
jack_p50 earned 200 total points
ID: 1348163
You should set Thread's priority level to low/lowest so it doesn't freeze system. Also you should check how many such Threads are active and than manage their priorities, so sum
of resources useing by all threads be almost constant(not depends on number of Threads)
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
Have you created a query with information for a calendar? ... and then, abra-cadabra, the calendar is done?! I am going to show you how to make that happen. Visualize your data!  ... really see it To use the code to create a calendar from a q…
Suggested Courses

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question