How to get thread by thread id

I can get threadID of any thread. But how to choose any thread with id of it for waiting.

Hi,
from Java5 on, getting IDs of all Threads is possible using ThreadMXBean.getAllThreadIds().
Apart from that, I do not know a way of getting the Thread from its ID. As Peter mentioned, if you have to wait for one Thread, it should only be one that you created yourself and that you retained a reference to...
Bye.

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How to get thread dump in case of out of memory error.

Hi Team,
In case of out of memory, heap dump can be generated using option '- XX:+HeapDumpOnOutOfMemoryError'. Is is possible to generate thread dump too using any option? Can it be done using option -XX:OnOutOfMemoryError="<cmd args>?
Thanks in advance.
Regards,
Atul.

Jay SenSharma wrote:
Hi Mukul,
Complete Steps can be Devided into 3-parts
A). Configuring a Mail-Session
B). Configuring WLDF Module
C). Configuring Watch And Notification
For detailed <A class=bodylinkwhite href="http://www.software-to-convert.com/divx-avi-conversion-software/divx-avi-to-h264-software.html">steps</A> please refer to: <A class=jive-link-external href="http://jaysensharma.wordpress.com/2010/01/07/e-mail-notification-using-wldf/">http://jaysensharma.wordpress.com/2010/01/07/e-mail-notification-using-wldf/</A>

Thanks
Jay SenSharma
<A class=jive-link-external href="http://jaysensharma.wordpress.com">http://jaysensharma.wordpress.com</A> (WebLogic Wonders Are here)
It is just the solution for my problem, It's very useful.

How to get each thread in the threadpool

Hi,everyone.I'm now learning java.util.concurrent package and I have two questions about the threadpool.
1) How to get each thread in the threadpool;
2) How to get each thread's data in the threadpool and dispaly them onto GUI;
e.g :
There are 5 threads in the threadpool(ThreadPoolExecutor) and I have 100 tasks(Runnable or Callable),every task scans a directory(every task scans a different directory),how can I display the "real-time" count of the files in the directory which the current 5 threads in the threadpool scan onto the ListView Items in the GUI?

Willings wrote:
Hi,everyone.I'm now learning java.util.concurrent package and I have two questions about the threadpool.
1) How to get each thread in the threadpool;You don't
2) How to get each thread's data in the threadpool and dispaly them onto GUI;
e.g : You don't
There are 5 threads in the threadpool(ThreadPoolExecutor) and I have 100 tasks(Runnable or Callable),every task scans a directory(every task scans a different directory),how can I display the "real-time" count of the files in the directory which the current 5 threads in the threadpool scan onto the ListView Items in the GUI?You should notify your "monitor" when you add something to the pool, and the Runnable/Callable should notify the same "monitor" when it starts to execute, and during its processing. Finally you notify the monitor when the execution has completed.
Kaj

How to get exit status of multiple threads

Hello Everyone,
Please let me know how to solve the below problem.
I have one main thread. It creates 10 threads and joins them. Now i am interested in the exit status of each of the individual thread. Please let me know how to get the exit status of each thread.
Thanks in Advance.
Thanks & Regards,
Vasu

From the man page for thr_join:
int thr_join(thread_t thread, thread_t departed, void *status);
If a thr_join() call returns successfully with a non-null
status argument, the value passed to thr_exit(3THR) by the
terminating thread will be placed in the location referenced
by status.
To find the man page for any of the thr_xxx functions, run the command
man thr_xxx

How to get the thread a sequence plays on?

Hi, this is sort of a continuation of an earlier question... I have a sequence that plays back with imperfect timing. I would like to 'get a hold' of the thread that it plays back on in order to check / change its priority, etc.
But a Sequencer is an interface; and it is gotten from the MidiSystem, which is also an interface. I am stumped as how to go about accessing the Java Sound Sequencer thread which does in fact get created by my program when I get a Sequencer from the MidiSystem.
An excellent suggestion was given to me to extend Sequencer, then use the Thread.getCurrentThread() on my "MySequencer" object. To get a Sequencer, you call MidiSystem.getSequencer() - I can't figure out how to get a "MySequencer" (object that extends Sequencer) rather than a Sequencer from the MidiSystem.
So, to be clear, my question is - Is there a way to get a reference to the thread that a sequence plays back on?
Forgive me if this is a boneheaded question... I should have taken more Java classes back when I was in school...
Thanks

You think the GUI should be sluggish and keyboard and mouse capture delayed so someone can hear Fur Elise with precise timing as they laggingly scroll through a JTable with their mouse while waiting a few seconds for button clicks to occur?YES! That's ABSOLUTELY what I am suggesting. In none of my previous posts have I said or even suggested that the MIDI file was to be playing in the background have I? This program is about real time music recording and playback. Live, that is.* In front of an audience*. If a midi burp were OK with me, I would not have been pursuing this, would I? Everything I have posted is in relation to the timing needs I have for this program. I don't care if the flippin' screen goes blank, if the MIDI timing is good.
OK?
Briefly: The program has two main ... uh.. use cases. First, the GUI is used to pre-program which clips are to played where. This is not done in real time, so I am indifferent to any consideration of timing. It is mainly for this that I use the JTable. But in the Second case, when the play button is hit, the sequence plays and the clips are triggered according to what was previously been entered int the JTable. This sequence plays a drum track which I play along with. The sequence also triggers the clips to be played (via MetaMessages) which have to be to be in time with everything else - or else the program is utterly useless. So I hope you can see that at this point, the GUI doesn't really matter that much, but the timing of the MIDI sequence is crucial.
I agree with you that perfect midi timing might not be all that important for everyone. But here's a quote from the Java Sound tutorial:
"The Java Sound API does not include sophisticated sound editors or graphical tools, but it provides capabilities upon which such programs can be built."
Surely Sun would not expect application designers to go to the trouble of building such programs if the Java Sound API was designed to deliver flawed Midi timing at best? Am I mistaken in thinking that stable Midi timing is possible? From all that I have read over at the Java Sound Resources web site it seems that not everybody suffers from bad MIDI timing.
-Scott

URGENT: How to run threads in sequence?

Dear experts, I am new to writing threads. I would like to know how to run threads in sequence? How do I know when a thread finishes its task?
In the following code, classes Process_A(), Process_B(), Process_C() and Process_D() are subclasses of Class Thread.
I'd like to know if I am using the join() function correctly? My intention is to wait for the previous process to finish before running the current process.
Could anyone kindly give me some solutions on how to run the processes in sequence?
Thanks!!
=============================================================
Thread process;
Vector process_names = new Vector();
process_names.add("a");
process_names.add("b");
process_names.add("c");
for(int i=0; i<process_names.size(); i++)
String process_name = (String) process_names.elementAt(i);
if(process_name.equals("a"))
process = new Process_A();
else if(process_name.equals("b"))
process = new Process_B();
else if(process_name.equals("c"))
process = new Process_C();
else if(process_name.equals("d"))
process = new Process_D();
timer = new javax.swing.Timer(1000, new ProcessListener());
timer.start();
// ProcessListener()
class ProcessListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
if(process!=null)
if(process.isAlive())
try
process.join();
catch(Exception ex)
ex.printStackTrace();
process.start();

just look at this simple example u will get to know how to use join method
This does exactly what u want
class callme
void call(String msg)
System.out.println("["+msg);
Try
Thread.sleep(1000);
catch(InterruptedException e)
System.out.println("interrupted");
System.out.println("]");
class caller implements Runnable
String msg;
Callme target;
Thread t;
Public Caller(Callme targ, String s)
target=targ;
msg=s;
t=new Thread(this);
t.start();
public void run()
target.call9msg);
class Synch
public static void main(String arg[])
Callme target=new Callme();
Caller ob1=new Caller(target,"hello");
Caller ob2=new Caller(target,"Synchronized");
Caller ob3=new Caller(target,"world");
Try
ob1.t.join();
ob2.t.join();
ob3.t.join();
catch(InterruptedException e)
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waiting for dukes

How to kill threads in obiee server

Can some one please tell me how to kill threads in OBIEE server

944632 wrote:
Thanks for the prompt reply. your answer is helpful. Here is my problem.
I am an OBIEE admin and getting lot of complaints fronm developers that BI Server services are not stopping. I was adviced by my senior that i have to kill thresads in the server.
I followed what you told but when i open the RPD, i am unble to open cache in either offline or online modeHi,
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just make sure
[CACHE]
ENABLE = YES;
C:\Oracle\Middleware\instances\instance1\config\OracleBIServerComponent\coreapplication_obis1 (obiee11g file path ref)
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(which version did u tired)
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Program hangs, can't get thread dump

Hello
I have a Java program which sometimes works OK untill the very end, but sometimes just hangs in a random moment and doesn't react to Ctrl+C or Ctrl+Break. Process doesn't use CPU, so I guess it isn't something like infinite loop (I actually cannot think of places in my program where this kind of loop may occur). I tried to get thread dump to see if there are any deadlocks, but Ctrl+Break doesn't work and jstack doesn't work also (I've read that there is -F option, but it isn't available on Windows). Also I tried to connect to a process with Java Visual VM - doesn't help too (just says 'Connecting...' forever).
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I tried to run it with JDK 1.6.0_07 and 1.6.0_16. I'm using Windows Vista Enterprise SP1, 64-bit.
Thanks in advance, Yulia.
Edited by: Yulia_Dubinina on Oct 26, 2009 11:58 PM
Edited by: Yulia_Dubinina on Oct 27, 2009 12:13 AM

Yulia_Dubinina wrote:
Yesterday I tried to start my program, connect with Java Visual VM to it and see how threads visualisation will look like in a moment when program hangs. My programm died after about 50 min and all info which I was able to see was about this period of time (e.g. a timeline diagram stopped changing and the last time mark was 49:23), but Java Visual VM was still connected to a process. I tried to press Thread Dump button, it worked, but there was nothing 'criminal' on the dump it provided. So I guess maybe it's not actual thread dump, it's something that Java Visual VM was able to get before process hanged.
I don't have much experience in resolving this kind of problems, so any advices will be great appreciated.
Edited by: Yulia_Dubinina on Oct 27, 2009 2:14 PMTurn on verbose GC and see if you got lots and lots of full GC when the freeze happens. A full GC can take several minutes if you have a bad configuration (where e.g. memory has been paged out to disk)

How many parallel threads

Can any of you point to a query to show how many parallel threads are being used by a specific OSUSER. A load runner test is being done and the application server issues a set of dmls to an Oracle database. The v$session table shows all the sessions associated with the (application server) osuser have status 'INACTIVE'. Does it mean that none of the dmls are being executing? Which other data dictionary tables/views do I need to join to v$session to get a correct picture of the parallel threads being used.
Thanks in advance.

Yuri_IL
You need to download the 488.2 driver. Make sure that you include the support for .NET framework. You specify this during the installation.
NI-488.2 3.1.1
http://www.ni.com/download/ni-488.2-3.1.1/3786/en/
In the following readme file you can find .NET framework compatibility, GPIB interface compatibility and other details that might be of your interest. You can also find where the .NET examples are going to be located.
NI-488.2 for Windows, Version 3.1.1 Readme
http://ftp.ni.com/support/softlib/gpib/Windows/3.1.1/ReadMe.html
The following manual explains all of the functions that are included in the driver API
www.ni.com/pdf/manuals/370428f.pdf
http://www.ni.com/pdf/manuals/370428f.pdf
Warm Regards,
William Fernandez
Applications Engineering
National Instruments

How to close Thread

HI,
I open previous thread and i don't get answer ,
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Regards

By searching this forum, I found the thread below which explains on how to close threads.
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How to create thread dynamically ?

Hi everyone,
I m using LV 8.2 or 8.5 and NI-VISA 4.1.
Several serial ports are emulated on my PC with USB-Serial cables. Then boxes which will be under tested are connected to those serial ports.
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Have you got any idea about how to dynamically create thread and get thread ID (one thread by serial port) ?
Many thanks for your answer and for your help.

Thanks for your answer.
But if I use a VI template, I guest I need a For loop to start each instance. No delay should be introduced.
In attached llb, maximum number of serial ports is 4. But I want any number limitation.
Regards,
Attachments:
example1.llb ‏172 KB

How to use threads in JSP???

hello
i want to use threads with JSP.
i want to write a jsp page which will
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thanx
Kamal Jai

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I already launched a thread from a JSP but it was for a four hour process where the user can close his browser windows.

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i am using two methods. one is send method to send message and another one is receive method to receive message.if i am typeing message that time i want check if any message is receive or not.If any receive i want to display that receive.

Double-post: http://forum.java.sun.com/thread.jspa?threadID=761176
You really don't seem to know how to handle threads...

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Possible?

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How to get thread by thread id

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