Testing and Concurrency – Brett Schuchert

• In Java you can’t get out of a deadlock, there you need to avoid
• Beim Concurrent Testing auf Thread warten (join), bevor die Assertions geprüft werden
• Bei I/O bound problems kann Multi-Threading gut helfen; Bei cpu-bound meist nicht
• try to put the locking as close as possible to the object – prefer server-based locking

Hints:

• run with more threads than processors
• run on target platform when tuning
• run with -server VM argument
• rely on published algorithms when possible
• don’t build your own thread-safe contrainers
  • use java.concurrent
• consider using intrinsic locks with java 6
• There’s a lot of gold in java.lang.concurrent
• use ConTest from IBM