What is the AWT-XAWT Thread?

When profiling my app and looking at the threads, I see this one.
What is the AWT-XAWT thread for?

Tails wrote:
When profiling my app and looking at the threads, I see this one.
What is the AWT-XAWT thread for?I guess you are using Unix/Linux? I don't know what the thread does, but it's related to X11.
Kaj

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What is the difference between thread and task

hi ,this is guruvulu bojja
what is the diff between thread and task .
can u give me the example for distinguish a thread and a task .
How can i know thread is better than a task .
please tell me what is the task in o/s level and task.
how the o/s distinguish a therad and task.

Hi Guruvulu,
Threads enhance performance and functionality by allowing a program to efficiently perform multiple tasks simultaneously.
In the case of common memory threads naturally have shared data regions while it has to be specially created and initialized for tasks.
Simply put, a thread is a program's path of execution. It allows execution of two or more sections of a program at the same time.
Regards,
Pooja.

What's the maximum # of threads?

Support for asynchronous I/O (in HTTPService and WebService)
kinda implies that the Player has a thread pool that it gets a
spare thread from each time I do a send() on one of these
components. Each allocated thread will block until it gets a
response. If I don't get any responses (perhaps because it's
long-lived) how many threads can I obtain from the pool before the
Player runs out of threads (or is there no maximum or is it a
start-up parameter)?

Anakin1989 wrote:
Hi,
I'm working on a pretty big program and i need a lot of threads to make it run well (it's an audio player and, of course, i don't need people to wait when, for example, they save a playlist). So, i put some of these tasks on different threads, plus others that i didn't need for making the program run faster, but they are there just to make the program run. Now i have at least 4 threads running at the same time and, in some cases, there are even 6 or 7. Is it too much? It's my first big program (it's just for fun but i still want it to run well) and i didn't need so many threads before. What's the maximum number of threads you'd recommend me to have?
Thanks.Are you experiencing any problems with the number of Threads you have? If not, stop worrying. On the other hand, are you sure you need all of them? There are alternatives to Threading, such as SwingWorker and Timer that might be able to help you out.
One thing you better make sure of is that you're not doing any Swing work off of the EDT, or doing things like sleeping or time-consuming work on the EDT.

What is the with posted thread statistics?

Some post show as being replied to and others don't. But the reality is that they have been replied to but not showing a count on the replies or the number of views. This has been happening in several MSDN forums over the last several weeks.

The site is playing up big time.
I frequently find up to the last day or so's worth of posts aren't appearing.
http://social.msdn.microsoft.com/Forums/vstudio/en-US/2176a4fb-989c-441b-8276-d26de36b628d/hey-msft?forum=reportabug
Hope that helps
Please don't forget to up vote answers you like or which help you and mark one(s) which answer your question.

What is the difference between new thread and new execution?

What is the difference in creating a new thread and a new execution. Basically, what is the difference between thread and execution?

Try this link...
http://zone.ni.com/devzone/cda/tut/p/id/4823
Thanks,
PH

What is the right way to handle events?

What is the right way to handle events? If I start doing stuff in the AWT event thread (particulaly things that create their own events) should I be starting a new thread?
A link to a good book or reference source will do
thanks in advance

http://java.sun.com/docs/books/tutorial/uiswing/events/

Updating component within awt-event thread of another component

Hi,
I'm having trouble updating (repainting) a component inside the awt-event thread of another component. The component I want to update is a JFrame with a JLabel that lists the progress of the original component's action that triggered the event. I can get the frame to pop up but it's content is never fully painted and never refreshed.
I've tried using invokeLater() (the frame ran after the original awt-event had finished) and invokeAndWait() (blocked the original awt-event) and running the computational intensive parts of the original component's action in SwingWorker threads (no difference) but all to no avail.
What I want to do is similar to a progress bar so I think it should possible. Any suggestions? Thanks, Matt

Are you calling yield() or sleep(...) on your Thread?

Synchronize AccessBridge thread with AWT event thread?

Hi,
I am a beginner in Java Access Bridge.
I am writing a program that runs with Java Web Start and uses JFC Swing. For system monitoring purpose my company uses HP OpenView. Probe Builder is used for recording a probe for the application. The probe will be run at regular intervals to check if anything is broken. As I understand Probe Builder uses Java Access Bridge to record & control the application flow.
Without Java Access Bridge my program runs fine. But when I run it with Probe Builder I occasionally catch some exceptions that indicate that there are two threads running over my gui classes at the same time, the AWT event thread and another thread that comes from com.sun.java.accessibility.AccessBridge.run.
Since my classes are not thread safe (like all the Swing classes) there are race conditions that result in a NullPointerException.
My question is that how can I make sure that only one thread at a time is running over my code? Can I somehow make Java Access Bridge run with the AWT event thread? Or do I have to synchronize all my methods - I want to avoid this since I am not sure that this can be done perfectly.
I will appreciate any help.
Thanks
Message was edited by:
karneim

Maybe there is some other way to "kill" this thread because for some specific reasons I don't think I will be able to use System.exit(). This reason is - I'm using this Java program in Lotus Notes (don't know if you have had any experience with this) and if I call System.exit() then some important clean-up (garbage collection) won't be done.

What is the max. count of internal worker-threads in B1iSN 88?

Hi Experts,
We have an installation of B1iSN 88 with an ECC 6.0 and 54 SAP Business One installation. The Hardware is 8 Core multi-threads processor. 32GB Memory. Now we have a problem with the queuing of Events. What we have found is that the configuration of the internal worker-threads is set to -1(please see below for the settings). We change the settings to xcl.threads=20 and it improves the queuing. My question is what is the max. count of internal worker-threads per core? so that we can know how many worker will set and if we need to upgrade the CPU to 16 Core..
# The max. count of internal worker-threads afforded for the internal Scheduler (defaults to 1)
# The value of 0 means that there is no limit (what in general should not be set up).
# A negative value means the count of threads per available processor
xcl.threads=-1
Regards,
Wilson

You're very welcome.
Yes, they are very nice machines.
What a jump in performance when I swapped out the Pentium 4 620 mine had, for the PD 945, and tossed in 4 GB of memory.
That box will also run the Radeon HD 6570 with no problem too, which is what I put in mine.
The downside of that model is that there are no settings for ahci or raid.
I own or have owned every CMT since the d510 with the exception of the dc7900.
My main PC is now the 8200 Elite CMT which I installed W8.1 on.
It has an i7-2600 processor and 32 GB of memory, 1 TB SATA III hard drive.
I threw in a Radeon HD 6670 in that one.
Best Regards,
Paul

What Are the Exact Basic rules for Replying a Thread...... -:) @};-

Hi Experts,
After Looking into the forums many days I had a small conclusion about forums,
SAP Forums are better place I have seen for getting a goo dhelp & Knowledge...
Why can't we make it a BEST Place.
This is just a small doubt which I would like to clear myself first,
I have seen many users In the forums asking for a Basic Questions
When cleared, But still they want to have a Spoon feeding with a Sample Code.
When Sample Code Given they will provide the original code and requests for Modifications.
These always looks to me as crazy.
I have seen somelong time agin by moderators posting that In SCN there will be no SPOON FEEDING.
I am not sure whether if still this Rule AVAILABLE or NOT.
Ok if the task is really difficult let them ask again and again,
And it was not replied, let them repost, I agree with them.
And How about a User Registered in SDN very long back and asking for a silly question in below thread,
[Sendin Email to the recipent list -Need correct FM |Getting the address from shipto partner of Bil. item not directly from C.ma]
This is one more example, really funny, The thread poster needs the solution at any cost, he doesn't require and Suggetions,,, {He Only needs Solution}
[Radio Buttons |Radio Buttons;
[Turning Off Debugger |Turning Off Debugger;
[Regarding Amount in words|Regarding Amount in words;
There are 100's of threads like this....Everyone knows this facts.
Check this who answered this one and who replied correct answer, who copied, finally who was rewarded...!
[how to validate POsting period |Re: how to validate POsting period]
Now My Real Problem is....!
User is always intelligent, Only the weakness is in Contributor, trying to help them,..,
And I openly say that Someone requesting for basic help is not DUMB, But the Contributor replying forgets
the basic rules " Why Contributing ?"
According to me It's not the Requestor to see Rules & Requlations before posting the threads,
But its responsibilty for the Contributing person to see th Rules & Requlations before replying the threads,
If we follow the rules and stand on a single word or rule or anything there will be Good Result.
Major Problem is in US not anyone else.
Example Some one saying search in the forum,,, then please no replies after that...
But we are very pity hearted again we post the solution,,,
But it is not at all enough(for cintribtor's)... they will copy the solution and post again by slight Modifications,
And Some users are having 500,600,700,800 Posts with 0 points, registered long long back.
They are completly dependent on forums,,, As they goto office and as they eat, The same they open forums and ask Queries...
They will never realize what they are doing,, and we will never let them improve better...
Finally Lets Discuss About this and Correct & Suggest me if I am wrong,
Is my thoughts are going in the right way or not I am not even sure... Please Aslo Correct me if I did any mistakes.
Thanks & regards,
Dileep .C
Edited by: Dileep Kumar Chinnaiah on Apr 29, 2009 12:33 PM
Title Changed Form
"What to do when someone asking for Basic Questions" to "What Are the Exact Basic rules for Replying a Threads...... "

Hi Stephen,
Very useful Information,
First tell me a little something about my self...
After completion of my certification(as a fresher) I was down the streets hunting the job,
with the insufficient knowledge and being a non-experienced person, I never got one.
And mean while when I got my "S-UserID", I used to be proud, To say frankly, I registerd in SDN & SAP all at a time, without even knowing what I can do there..,
When I got a job afterwords I was doing the job and never seen SDN page for many months,
when I came to know that of we have doubts we can post at SDN. then started requesting help,
I posted only a little, I didnot got the proper response. on that day I decided,
still there are some places where we cannot get help on time and there will be people waiting to get help,
Why cant I put some of my efforts to help others.
Then I searched some topic by Topic in SDN topic by Topic I used to read threads just for knowledge.
when I feel my self comfort for contributing, I started contibuting...!
If you haven't read it, take a look first, so you can understand where things are now.
I dont know where things are now. But these in this thread I mentioned clearly what I seen from the day I started contributing.
I searched with the terms of 'Rules for replying', The results are not as I expected, and this link has subject as
"O SDN, where art thou?" So it dosent hit my in the list.
Like everybody until a certain stage I am also rushing for points.
But I most cases I never tried to copy paste answers. If I done some then that is just to point it myself some day,
I have no hopes or no intrest on the points...! This was discussed with Rob & Matt, at my inital contribution where my points are 36.
From that day till date I have changed a lot to myself.
Everyone cannot change like me because they are not like me & And I dont even expect that...!
I will be online almost 6-8Hrs a day, Not even getting intrest to see the forums just because of the co-contributors.
My only point is I am just requesting to a co-contributor,
Clearly In a example : Lets say contributor has replied to a thread, and if you know that is a correct solution,
please dont reply any more, If you have a better solution than that, then only reply,
Even there is one reply in the thread not a matter, if correct answer leave that query.
If still error persists, Show up with your Idea's...
Dont let down the contributor, by copying his reply and editing and pasting(edit only if incorrect).
I am just looking for this one exactly to circulate between ourselfs.
For this we a little support from moderators to circulate(may be as a rule or may be as a mail to them)
You may say again how many mails we have to send, It dosent matter, one mail to one person one time,
and +ve factors will show up definetly.
A real contributor always understand what I am talking about, but some one who hunts for points will never.
I am really sorry if I am troubling with my doubts & requests,
If so, Pleae forgive me,,
Thanks & regards,
Dileep .C

I have a 4 month long text message thread conversation. What's the quickest way to get to the very beginning of the conversation?

I have a 4 month long text message thread conversation. What's the quickest way to get to the very beginning of the conversation?

The startup.exe file is locate in the \NI-RT\STARTUP directory. 'cd NI-RT' then 'cd STARTUP' should get you to the right place after making the connection with ftp. I don't recognize PH_EXEC.EXE. Logging in as anonymous is fine. I don't recall seeing documentation on the file structure and locations on the module but I'm sure there is some. I just wandered around w/ftp.
The program to update the node should be below. Enter the IP address, the green light will confirm the node is found.
The version function scans the existing startup.exe for a string beginning and ending with " RU Version " and prints everything in between as the version.
The autostart function will copy the existing ni-rt.ini file to your computer, mod
ify the autostart as requested, then put the file back. Leaves the copy on the PC, which can be handy.
Send file will request a file of the format startup*.dat which will be renamed startup.exe and ftp'd to the module. Lets you keep version numbers in the filename on the PC side. Your directory structure probably won't match mine so you'll have to browse for your file.
Reboot module reboots the module.
Hope this is useful, let me know if anything doesn't make sense. Thanks.
Matt
Attachments:
RNconfig.exe ‏855 KB

What is the result of violating the thread safety rule of Swing?

I needs to know what is the outcome of violating the thread safety rule of swing? memory leak? I have seen code violating the rule but still runs fine. Did anyone know?
Thanks

I had violated this rule and sometime it flies and sometimes it does a crash and burn. Most often it can result in a bug seen so rarely that it does not become a concern until the day of product roll-out. Mostly it can result in intermitent GUI anomallies and sometimes total app locks that are hard to intentionally reproduce. All paints and updates are done on the event queue and it is possible to invoke a thread on it saftly.
I refer you to the tutorial at: http://java.sun.com/docs/books/tutorial/uiswing/mini/threads.html

What is the diff'ce while creating a thread

what is the difference while creating thread using extends Thread, and implements Runnable interface. which one is perform better.

and for when to use which again depends upon if the
e class that you wish to make threaded already
extends from some other class. If so is the case the
only alternative you are left with is to implement it
from Runnable interface. ( as java does not supports
multiple inheritance ).That's a bad advice. You should only extend thread if you actually want to change the behaviour, or extend the functionallity of the thread class. You should not extend the thread class just because it's convinient.
/Kaj

What is the fastest way to pass data between parallel threads?

I have a top level vi running with 6 parallel threads. I need to pass some data from digital I/O to several of the threads. What is the fastest responding way to do this. I am controlling a machine that has quite a few sensed events happening at very close intervals, some as close together as 1 to 2 milliseconds, and I seem to be randomly missing the signal from these sensors. How can I distribute the I/O to the different threads and not miss any inputs?

I usually use a Queue to pass data from one loop to another. Other
choices are Functional Globals or Notifiers. It kind of depends on what
you need to do as to which one is best, so it's a bit hard to recommend
one over the others without knowing more about your application.
Both Queues and the Functional Globals (if written correctly) can
buffer data so you're less likely to lose data if one loop gets behind
the others.
Ed
Ed Dickens - Certified LabVIEW Architect - DISTek Integration, Inc. - NI Certified Alliance Partner
Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.

What is the correct way to destory a Thread?

Just wondering what is the correct way to destroy a thread? I am currently using the stop() method, but i noticed that it has been depreciated (along with other methods used to destroy a thread) when i looked at the thread documentation. Since this is so, then how can one correctly destroy a thread? Thanks in advance for the help.

There is an awful lot of bad advice in this thread about what null does. Please in future check on your own with working code before offering up misguided and very wrong advice. Particularly when your advice contradicts that previously given.
Please compile and run the following
public class Test implements Runnable{
public static void main(String args[])throws Exception{
    Test test = new Test();
    Thread t= new Thread(test);
    t.start();
    // have delay wait a few seconds to demonstrate
    Thread.sleep(3000);
    System.out.println("Setting reference to thread to null");
    t = null; // what does this do?
    // jack all
    System.out.println("Exiting main");
public void run(){
    while(true){
      System.out.println("Hello from test thread!");
      try{ Thread.sleep(750); }catch(InterruptedException iDontCareAboutThis){}
}This will output the following
C:\>java Test
Hello from test thread!
Hello from test thread!
Hello from test thread!
Hello from test thread!
Setting reference to thread to null
Exiting main
Hello from test thread!
Hello from test thread!
Hello from test thread!
Hello from test thread!
Hello from test thread!
Hello from test thread!And continues on endlessly. Setting the reference to null is NOT an answer to this problem.

What is the AWT-XAWT Thread?

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