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package scala.concurrent
import java.util.concurrent.{ExecutorService, Callable, TimeUnit}
import scala.annotation.unchecked.uncheckedVariance
/** The <code>ThreadPoolRunner</code> trait...
*
* @author Philipp Haller
*/
trait ThreadPoolRunner[T] extends TaskRunner[T] {
type Future[+R] = RichFuture[R]
trait RichFuture[+S] extends java.util.concurrent.Future[S @uncheckedVariance]
with (() => S)
protected def executor: ExecutorService
def submit(task: () => T): this.Future[T] = {
val callable = new Callable[T] {
def call() = task()
}
toRichFuture(executor.submit[T](callable))
}
def execute(task: Runnable): Unit =
executor execute task
def managedBlock(blocker: ManagedBlocker) {
blocker.block()
}
private def toRichFuture[S](future: java.util.concurrent.Future[S]) =
new RichFuture[S] {
def cancel(mayInterrupt: Boolean) = future cancel mayInterrupt
def get() = future.get()
def get(timeout: Long, unit: TimeUnit) = future.get(timeout, unit)
def isCancelled() = future.isCancelled()
def isDone() = future.isDone()
def apply() = future.get()
}
}
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