This week's book giveaway is in the Server-Side JavaScript and NodeJS forum.
We're giving away four copies of Modern JavaScript for the Impatient and have Cay Horstmann on-line!
See this thread for details.
Win a copy of Modern JavaScript for the Impatient this week in the Server-Side JavaScript and NodeJS forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Ron McLeod
  • Paul Clapham
  • Bear Bibeault
  • Junilu Lacar
Sheriffs:
  • Jeanne Boyarsky
  • Tim Cooke
  • Henry Wong
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • salvin francis
  • Frits Walraven
Bartenders:
  • Scott Selikoff
  • Piet Souris
  • Carey Brown

Set Thread priorities based on certain conditions

 
Ranch Hand
Posts: 45
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I read that thread priorities may not ensure that your program would run with the same path as the thread priorities
But in the long run(with time), priorities does take effect?

I read this thread

https://coderanch.com/t/541462/threads/java/why-output-so-different#2456564

The main thing to remember is that with multiple threads you've got very little control over the scheduling (unless you intervene with synchronized blocks or other mechanisms). The priorities are just a hint to the scheduler, but they may or may not have a great effect. In fact, you can potentially get very different results running the program twice with the same priorities.

The key thing to take away from this is to never make assumptions over how the threads will be handled when left to their own devices. If the order really matters to your application, you need to design that in.




I wrote this code


When I see the output its different everytime(even if we ignore the if loops)
Now my question is lets say a scenario
where three threads are downloading different files of size 2, 8 and 20 MB
I want the logic that the thread downloading the smallest file should get more priority
Is above logic the right way to implement the same?
 
No. No. No. No. Changed my mind. Wanna come down. To see this tiny ad:
Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop
https://coderanch.com/wiki/718759/books/Building-World-Backyard-Paul-Wheaton
    Bookmark Topic Watch Topic
  • New Topic