jni

http://netty.io/

http://www.javaworld.com/article/2076513/java-concurrency/enhance-your-java-application-with-java-native-interface--jni-.html

https://en.wikipedia.org/wiki/Java_Native_Interface

https://thebreakfastpost.com/2012/01/21/wrapping-a-c-library-with-jni-introduction/

https://www.ibm.com/developerworks/library/j-jni/

https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/intro.html

https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html#FindClass

http://docs.oracle.com/javase/7/docs/technotes/guides/jni/spec/invocation.html

http://stackoverflow.com/questions/24746776/what-does-a-jvm-have-to-do-when-calling-a-native-method/24747484#24747484

http://cr.openjdk.java.net/~jrose/panama/native-call-primitive.html

http://mail.openjdk.java.net/pipermail/panama-dev/2015-December/000225.html

http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/file/tip/src/cpu/x86/vm/sharedRuntime_x86_64.cpp#l1720