The Java Memory Model (JMM) describes which executions of a program are legal by determining what value(s) can be observed when reading a shared variable according to certain rules.
A sensitive operation in my lab today went completely wrong. An actuator on an electron microscope went over its boundary, …
java concurrency java-memory-model memory-visibilityWe use volatile in one of our projects to maintain the same copy of variable accessed by different threads. My …
java volatile java-memory-modelCould you give me some information on what is exactly stored in object header? I know, that it's probably JVM …
java jvm java-memory-model object-layout jolI've taken a look into OpenJDK source code of CopyOnWriteArrayList and it seems that all write operations are protected by …
java data-structures concurrency java-memory-modelJSR-133 FAQ says: But there is more to synchronization than mutual exclusion. Synchronization ensures that memory writes by a thread …
java concurrency jvm java-memory-modelIn the book Java Concurrency In Practice, we are told several time that the instructions of our program can be …
java multithreading concurrency java-memory-modelMust immutable objects have all properties be final? According to me not. But I don't know, whether I am right.
java immutability final java-memory-modelHERE, author is saying that 3) String pool is created in PermGen area of Heap, garbage collection can occur in perm …
java string jvm java-memory-modelI couldn't find a comprehensive source that would explain the concept in a clear manner. My understanding is that a …
java garbage-collection java-memory-modelIMPORTANT EDIT I know about the "happens before" in the thread where the two assignments are happening my question is …
java volatile java-memory-model