Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Thread scheduling

Posted on 2004-10-08
12
Medium Priority
?
234 Views
Last Modified: 2008-03-06
how can i control execution of multiple threads in a sequence?
  thread1 > thread2 > thread3 > thread1 ......

  i thought about writing a schedular but when i wrote it i had problems about switching because the threads scheduled can also have their own sleep or wait conditions.

  is there any robust solution for this kind of things?
0
Comment
Question by:sunny012097
[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
  • 4
  • 3
  • 2
  • +3
12 Comments
 
LVL 5

Accepted Solution

by:
Naeemg earned 1500 total points
ID: 12256612
0
 
LVL 92

Expert Comment

by:objects
ID: 12256617
if u want them to run consecutely then why run them in seperate threads, just call them consecutively from the one thread.

if they are seperate threads, then either don't start the next thread until the previous is finished, or call join() on the previous at the start of each thread to wait until it completes.
0
Build and deliver software with DevOps

A digital transformation requires faster time to market, shorter software development lifecycles, and the ability to adapt rapidly to changing customer demands. DevOps provides the solution.

 
LVL 15

Expert Comment

by:babuno5
ID: 12256942
Hello
well u can try setting the priority of each thread which might just help you out

Thread.setPriority(int );
Thread.MIN_PRIORITY;
Thread.NORM_PRIORITY;
Thread.MAX_PRIORITY;

or u could also try synchronizing the threads.
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 12258301
Don't fumble with priorities! Follow objects' advise thats the perfect answer!

;JOOP!
0
 
LVL 2

Expert Comment

by:ThummalaRaghuveer
ID: 12261895
Some thing funny...

Have an instance of a class(WhoNext) which here contains a whoNext boolean array....
If Thread 1 is using then make WhoNext.whoNext[1] = 1(my turn) and rest all to 0.

If Thread 1 is done and Thread 2 should be executed..... say
WhoNext.whoNext[1] = 0(Not My turn)
WhoNext.whoNext[2] = 1(My Turn)

Say For Example Thread 1 is supposed to run but do not get CPU time then as its not other turn to run their job they should just say
Thread.yield();

:-)
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 12265314
No, just call:

      thread1.run();
      thread2.run();
.....
;JOOP!
0
 
LVL 2

Expert Comment

by:ThummalaRaghuveer
ID: 12266653
Then you are not using the concept of Threads all you are doing is making some function calls.....

which would be executing sequentially........
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 12266857
That's exactly right: threads in a sequence ARE NOT THREADS ANYMORE!

;JOOP!
0
 

Author Comment

by:sunny012097
ID: 12267088
i am talking about squentially runing threads like;

              thread 1
              thread 2
              thread 3
              thread 1
              thread 2
              ...
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 12267108
Threads are subprocesses that run concurrently.
If you want it like you describe, you don't need a single thread, unless you want to run them
concurrently to your main.
Then you only need ONE thread that calls these 3 procedures in sequence.
;JOOP!
0
 
LVL 2

Expert Comment

by:ThummalaRaghuveer
ID: 12267461
yaaa JOOP you were right
0

Featured Post

Technology Partners: 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

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Suggested Courses

670 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