Collapsed revision

* Merged eigen/eigen into default

unsupported/Eigen/CXX11/src/ThreadPool/ThreadPoolInterface.h

@@ -19,6 +19,15 @@ class ThreadPoolInterface {
   // Submits a closure to be run by a thread in the pool.
   virtual void Schedule(std::function<void()> fn) = 0;
 
+  // Submits a closure to be run by threads in the range [start, end) in the
+  // pool.
+  virtual void ScheduleWithHint(std::function<void()> fn, int start,
+                                int end) {
+    // Just defer to Schedule in case sub-classes aren't interested in
+    // overriding this functionality.
+    Schedule(fn);
+  }
+
   // If implemented, stop processing the closures that have been enqueued.
   // Currently running closures may still be processed.
   // If not implemented, does nothing.