Concurrency in Groovy

[charu shila]

Hi All,
Could somebody please tell me how to handle concurrency issues in Groovy?


regads

[Marc Peabody]

At this point, it's exactly like you would handle concurrency in Java.

[Matthew Taylor]

The best thing about Groovy concurrency is that Closure implements Runnable. So you can very easily kick off a process running in a new thread:

// this closure implements "Runnable", so it can be started in a Thread
def printCount = {
    (1..5).each {
       println "${Thread.currentThread()}: $it"
    }
}
 
// Here we are starting it in a new Thread
Thread.start printCount
 
// Here we're calling it from the main Thread
printCount()

You should see the parallel printouts, something like this:

Thread[Thread-15,6,main]: 1
Thread[Thread-16,6,main]: 1
Thread[Thread-15,6,main]: 2
Thread[Thread-16,6,main]: 2
Thread[Thread-15,6,main]: 3
Thread[Thread-16,6,main]: 3
Thread[Thread-15,6,main]: 4
Thread[Thread-16,6,main]: 4
Thread[Thread-15,6,main]: 5
Thread[Thread-16,6,main]: 5
[ September 05, 2008: Message edited by: Matthew Taylor ]