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How does the Java VM work with line and memory alignment in MT contexts?

According to the subject, if in C / C ++ it is easy to find the cache line size and solve this problem when developing effective MT code, how does the Java VM deal with this?

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This is usually not the case. You have to solve it yourself. If this is really important, you may need to use JNI to get low-level system information.

Java, on the other hand, simplifies the writing of an MT application by supporting it in the language from the very beginning.

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There is a very good chance that Java will begin to deal with this as with Java 8. JEP 142 states:

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