Flash wastes memory with loadvars

[Tiansen]

Okay, here is a sample, that wastes memory. It reads variables from server (database) continuosly (onLoad is called when previous loading is complete). Memory usage grows every minute, so it is unusable.

load_lv=new LoadVars();

load_lv.load("/path/to/php/file.php");

load_lv.onLoad=function(success:Boolean)
{
if(success)
{
load_lv.load("/path/to/php/file.php");
}
}


Why is this simple sample wasting memory? Does someone know how to rewrite it to resolve this issue?

 

[kennethkawamoto]

Instead of loading the same variable and going into an infinete loop (no wonder memory usage goes up!), do something useful upon loading.

[tt]//
load_lv=new LoadVars();
load_lv.load("/path/to/php/file.php");
load_lv.onLoad=function(success:Boolean)
{
if(success)
{
trace(this.toString())
//Do something useful with it
}
else
{
trace("Couldn't load it!")
}
}
//[/tt]

Kenneth Kawamoto

http://www.materiaprima.co.uk

 

[Tiansen]

Well, I must react to some change in database. Any approach that notifies me when something is changed in a database (MySQL) would do. I just don't remember any other way right now.

 

[kennethkawamoto]

One way is to use interval and send a query periodically to your database, but there may be other ways.

Kenneth Kawamoto

http://www.materiaprima.co.uk

 

[Tiansen]

Even that is leaking memory!

this.createTextField("mytxt", 100, 0, 0, 100, 20);
mytxt.autoSize = "left";

load_lv=new LoadVars();

setInterval(readdata,500);
function readdata()
{
load_lv.load("

http://10.0.0.52/lip/spremen.php");

}

 

[Tiansen]

My previous post was not so clean. Here we go again:

But... even that is leaking memory! Although not so fast as before but still way too much!

load_lv=new LoadVars();

setInterval(readdata,500);
function readdata()
{
load_lv.load("/path/to/file.php");
}

 

[kennethkawamoto]

You are loading the variable every 500 milliseconds (1/2 seconds) - can it slow down a bit?

Kenneth Kawamoto

http://www.materiaprima.co.uk

 

[Tiansen]

I must be notified about change in a database as soon as possible! I'm a little disappointed about Flash behaviour in that matter. There must be some way around that. No matter if I set interval to 5000 or 500, memory leak will grow, faster or slower. It's just not ok. Something is wrong with script or with flash design. I just don't know what...

P.S.: Can Flash Remoting help here?

 

[kennethkawamoto]

You probably need Flash Comm Server to push data to SWF.

Kenneth Kawamoto

http://www.materiaprima.co.uk

 

[Tiansen]

You mean Flash Media Server?

 

[kennethkawamoto]

Flash Communication Server, which can push data to Flash client.

Kenneth Kawamoto

http://www.materiaprima.co.uk

 

[Tiansen]

I think Flash Communication Server has been renamed to Flash Media Server.

 

[kennethkawamoto]

http://www.macromedia.com/software/flashcom/

You're right.

Kenneth Kawamoto

http://www.materiaprima.co.uk

 

[Tiansen]

So I must have a separate license of Media Server for each application I make with that. That's more than 2000 euro pro application. Way too much....

 

[Tiansen]

I am now using Macromedia Flash 8 Trial Version. If I can resolve this memory issue I will buy at least one Flash license. Because I am a trial user now, I cannot post directly to Macromedia. Can someone that has a registered product post the following to Macromedia (

http://www.macromedia.com/international/support/emea/contact/)

and give me an answer please:

I cannot figure out what is causing this example to slowly leak a memory. I've also tried some variations including use of "delete", but it also didn't help. Another issue is that it works under Mozilla Firefox (where it leaks memory), but it doesn't work under Internet Explorer (it doesn't refresh load_lv).

this.createTextField("mytxt", 100, 0, 0, 100, 20);
mytxt.autoSize = "left";
load_lv=new LoadVars();

load_lv.load("variables.php");
setInterval(readdata,1000);

function readdata()
{
if(load_lv.loaded==true)
{
load_lv.load("spremen2.php");
mytxt.text=load_lv.test;
trace("Successfully loaded!");
}
else trace("Not loaded yet!");
}