java Programming Glossary: barrier

Performance ConcurrentHashmap vs HashMap

http://stackoverflow.com/questions/1378310/performance-concurrenthashmap-vs-hashmap

does use atomic volatile operations which implies a memory barrier potentially very costly and interfering with other possible..

What is an “incompletely constructed object”?

http://stackoverflow.com/questions/2513597/what-is-an-incompletely-constructed-object

of what's going on I suspect there's an implicit memory barrier at the very end of a constructor making sure that all threads.. sure that all threads see the new data without that memory barrier having been applied there could be problems. share improve..

Difference between volatile and synchronized in JAVA (j2me)

http://stackoverflow.com/questions/3519664/difference-between-volatile-and-synchronized-in-java-j2me

synchronization also creates a happens before memory barrier causing a memory visibility constraint such that anything that..

Memory barriers and coding style over a Java VM

http://stackoverflow.com/questions/3964317/memory-barriers-and-coding-style-over-a-java-vm

barriers and coding style over a Java VM Suppose I have a static complex.. object. IIUC The Java spec says that without a memory barrier in HERE I may see an object with f.b initialized but f.a not.. you think is the most readable way to implement the memory barrier I am willing to pay a little performance price for the sake..

Java concurrency: Countdown latch vs Cyclic barrier

http://stackoverflow.com/questions/4168772/java-concurrency-countdown-latch-vs-cyclic-barrier

concurrency Countdown latch vs Cyclic barrier I was reading through the java.util.concurrent API and found.. of threads to all wait for each other to reach a common barrier point. To me both seems equal but I am sure there is much more.. value of countdown java concurrency countdownlatch cyclicbarrier share improve this question One major difference is that..

Designing a Test class for a custom Barrier

http://stackoverflow.com/questions/4418373/designing-a-test-class-for-a-custom-barrier

custom Barrier I had to do an implementation of a custom barrier class using locks as part of my course work. To test my LockBarrier.. public class TestDriver private static LockBarrier barrier static class Runnable1 implements Runnable public Runnable1.. Thread.currentThread .getId lazy arrived at barrier Thread.sleep 10000 barrier.await System.out.println Thread.currentThread..

Is volatile expensive?

http://stackoverflow.com/questions/4633866/is-volatile-expensive

without updating it needs a LoadLoad or a LoadStore barrier. Further down the page I see that LoadLoad and LoadStore are..

java: “final” System.out, System.in and System.err?

http://stackoverflow.com/questions/5951464/java-final-system-out-system-in-and-system-err

an ordinary final field is immune to synchronization the barrier involved in a lock or volatile read does not have to affect..

Printing a large Swing component

http://stackoverflow.com/questions/7026822/printing-a-large-swing-component

of the contents of the scroll pane some sort of internal barrier stops the JFrame becoming more than about 1100 pixels tall...

Hibernate, iBatis, Java EE or other Java ORM tool

http://stackoverflow.com/questions/716532/hibernate-ibatis-java-ee-or-other-java-orm-tool

kind the type mapping etc. If you know SQL I would say the barrier to learning JPA is actually higher. If you don't it's more of..

JAXB: How should I marshal complex nested data structures?

http://stackoverflow.com/questions/818327/jaxb-how-should-i-marshal-complex-nested-data-structures