Split TaskRunner into FutureTaskRunner and Task...

Split TaskRunner into FutureTaskRunner and TaskRunner. FutureTaskRunner
has an abstract Future[T] type member and inherits an abstract Task[T]
type member from TaskRunner. Implicit conversions enable tasks and
futures to be treated as parameter-less functions. This allows
TaskRunners to be used by actor schedulers without creating lots of
wrapper objects.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/library/scala/concurrent/FutureTaskRunner.scala b/src/library/scala/concurrent/FutureTaskRunner.scala
new file mode 100644
index 0000000000..48ad0817a2
--- /dev/null
+++ b/src/library/scala/concurrent/FutureTaskRunner.scala
@@ -0,0 +1,17 @@
+package scala.concurrent
+
+/** The <code>FutureTaskRunner</code> trait...
+ *
+ *  @author Philipp Haller
+ */
+trait FutureTaskRunner extends TaskRunner {
+
+  type Future[T]
+
+  implicit def futureAsFunction[S](x: Future[S]): () => S
+
+  def submit[S](task: Task[S]): Future[S]
+
+  def managedBlock(blocker: ManagedBlocker): Unit
+
+}