Better Understanding through Bytecode

Outline

JVM Runtime
- Stacks rule everything around me
  - Threads and the call stack
  - Execution stack per method
- Bytecodes
  - javap
  - Anatomy of a bytecode (optional params, actually bytes)
  - load
  - store
  - Constant pool
  - new/dup/
  - get/putfield
  - if/goto (look ma, no loops!)
  - invoke methods
Concurrency
- We can see the interleaving between threads
Tail Call
- Top level functions in Kotlin, but still need a class in bytecode!
- GOTO makes everything better
Coroutines
- Like before, lots extra generated on our behalf!
- State machine for each of our steps
- Following method calls