Thread start/stop monitoring

Question : how to monitor a Java thread getting started or stopped ?

Answer : think about the run() method of the Runnable interface.


Details :

Step #1 : consider this AspectJ pointcut definition :

pointcut threadRun() : execution (* Runnable.run());

Step #2 : you can now rely on these 2 respective AspectJ advices :

before () : threadRun() && !cflowbelow(threadRun())
{
    System.out("Starting Thread ID : " + Thread.currentThread().getId());
}

after () : threadRun()
{
    System.out("Stopping Thread ID : " + Thread.currentThread().getId());
}

The '!cflowbelow' filter controling any reentrant situation.