Java Volatile

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http://youtube.com/watch?v=nhYIEqt-jvY

The Java volatile keyword can be applied to Java variable declarations to force the Java VM to always read the variable value directly from main memory, and always write changes to the variable directly back to main memory immediately. • Chapters • 0:00 Java volatile introduction • 0:41 Non-volatile variable visibility problems • 2:27 Java volatile visibility guarantee • 5:30 Instruction reordering could break the Java volatile visibility guarantee • 12:33 Java volatile happens before guarantee • 15:03 Java volatile performance overhead • 15:56 Java volatile is not always enough • Java Memory Model - JSR 133 • https://www.cs.umd.edu/~pugh/java/mem... • Java volatile tutorial - textual: • http://tutorials.jenkov.com/java-conc... • Java synchronized tutorial - textual / video: • http://tutorials.jenkov.com/java-conc... • • Java Synchronized - The synchronized ... • Java concurrency tutorial - textual: • http://tutorials.jenkov.com/java-conc... • Java concurrency tutorial - playlist: • • Java Concurrency and Multithreading

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