Unsafe Java World - Crossing the Borderline - JokerConf 2014 Saint Petersburg
You never heard of sun.misc.Unsafe? You may be using it without realising it. Are you using Spring or Hibernate? 90% of todays applications use sun.misc.Unsafe directly or indirectly. Unsafe is meant to be an API internal to the JVM but since it turned out to be extremely powerful, more and more frameworks have used it. This talk will show different usecases of sun.misc.Unsafe and other inherently unsafe possibilities in Java. Some are commonly used in production environments like fast Serialization, Offheap or to build lock-free algorithms, some not suitable for production but fun to play with breaking the rules of what you can do in Java. After the talk you’ll understand what is possible and what might help you, but not to forget, this talk is given with a big warning: Don’t Try That At Home!
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Unsafe Java World - Crossing the Borderline - JokerConf 2014 Saint Petersburg
- 1. Unsafe Java World Crossing the Borderline http://www.underwhelmedcomic.com/wp-content/uploads/2012/03/runningdude.jpg
- 2. WARNING The following talk features stunts and code examples performed either by professional insane people or under the supervision of crazy guys. Accordingly, JokerConf and the presenters must insist that no one attempt to try to use the obviously non-production-ready stunts and Java examples on this talk.
- 3. Peter Lawrey Higher Frequency Trading Principal Consultant 3rd on StackOverflow for Java Founder of Performance Java User’s Group Vanilla Java Blog has had 3mio views
- 4. Chris Engelbert Hazelcast, Inc. Twitter: @noctarius2k 8+ years Java Weirdo Travel Management Gaming Industry Distributed Computing Apache Committer
- 5. Chris Engelbert Hazelcast, Inc. Twitter: @noctarius2k 8+ years Java Weirdo Travel Management Gaming Industry Distributed Computing Apache Committer
- 6. 1. Hacking Immutable 2. Easy Offheap 3. CompareAndSwap 4. Bytecode Instantiation Hack 5. Resetting Hashcode 6. Enum Instances 7. Sneaky Throw Exception 8. Exploit Security Check 9. (Replacing JRE Classes) http://www.firstpourwine.com/wp-content/uploads/2012/05/2009-Running-w-Scissors.jpg
- 8. THANK YOU! ANY QUESTIONS? @noctarius2k http://www.sourceprojects.org @PeterLawrey http://www.vanillajava.blogspot.de