time.groovy

def time(opname, block)
{ 
 long start\_time = System.nanoTime()
 boolean success = true
 try {
   return block()
 } catch (Throwable ex) {
   success = false;
   throw ex
 } finally {
   diff = System.nanoTime() - start_time
   println "$opname $diff $success"
 }
}

int f() throws Exception {
 time("a") { 
 Random r = new Random()
 if (r.nextInt(100) > 50)
   throw new IOException("Boom")
 else
   return 42
}

time("b") {
 return 7
 }
}

println f()