January 2017
Intermediate to advanced
420 pages
9h 25m
English
Content preview from Programming KotlinBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Deadlocks and livelocks
When a thread cannot continue because it requires some resource that another thread has ownership of, it blocks waiting for that resource. The thread that owns that resource in turn requires something the first thread owns and so it blocks the initial one. Neither can make progress, and this is called a deadlock.
If the resource is preemptable, then the operating system or virtual machine can take the lock away from one of the threads and then another thread will be able to grab it; with this, progress would be made eventually. This is not a deadlock. Also, the resources in question must not be shareable, otherwise both threads could simply acquire the lock at the same time, which would also not be a deadlock.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.