JavaBarrierExample

Steps taken

Basically, the commits in this repo:

1. Write your code that you wish you had: f9372d7

• inspired by T/BDD, which I am very much used to.

1. Use Java's CyclicBarrier to make it happen: 9a82c3f

• So we can learn the interface

1. Replace CyclicBarrier with a stub implementation: 15971e2

• also simplify the API's cruft - we don't need those exceptions to be caught for the purpose of this demo

1. Implement the barrier: 0a7370c & 9b26727

Running

1. git clone <this repo> && cd <repo>
2. javac *.java && java BarrierExample
3. Output:

Thread-1: running
Thread-1: this should happen before reaching the barrier
Thread-2: running
Thread-2: this should happen before reaching the barrier
Thread-3: running
Thread-3: this should happen before reaching the barrier
Thread-4: running
Thread-4: this should happen before reaching the barrier
Thread-5: running
Thread-5: this should happen before reaching the barrier
Thread-6: running
Thread-6: this should happen before reaching the barrier
Thread-7: running
Thread-7: this should happen before reaching the barrier
Thread-8: running
Thread-8: this should happen before reaching the barrier
Thread-9: running
Thread-9: this should happen before reaching the barrier
Thread-10: running
Thread-10: this should happen before reaching the barrier
Thread-10: this should happen after the barrier
Thread-7: this should happen after the barrier
Thread-8: this should happen after the barrier
Thread-5: this should happen after the barrier
Thread-2: this should happen after the barrier
Thread-6: this should happen after the barrier
Thread-9: this should happen after the barrier
Thread-1: this should happen after the barrier
Thread-4: this should happen after the barrier
Thread-3: this should happen after the barrier

Hence, it works for this simplistic demo purpose.