Clean up the Tensor header and get rid of the EIGEN_SLEEP macro.

unsupported/test/cxx11_non_blocking_thread_pool.cpp

@@ -109,7 +109,9 @@ static void test_cancel()
   // Schedule a large number of closure that each sleeps for one second. This
   // will keep the thread pool busy for much longer than the default test timeout.
   for (int i = 0; i < 1000; ++i) {
-    tp.Schedule([]() { EIGEN_SLEEP(2000); });
+    tp.Schedule([]() {
+      std::this_thread::sleep_for(std::chrono::milliseconds(2000));
+    });
   }
 
   // Cancel the processing of all the closures that are still pending.

unsupported/test/cxx11_tensor_notification.cpp

@@ -23,7 +23,7 @@ static void test_notification_single()
   Eigen::Notification n;
   auto func = [&n, &counter](){ n.Wait(); ++counter;};
   thread_pool.Schedule(func);
-  EIGEN_SLEEP(1000);
+  std::this_thread::sleep_for(std::chrono::milliseconds(1000));
 
   // The thread should be waiting for the notification.
   VERIFY_IS_EQUAL(counter, 0);
@@ -31,7 +31,7 @@ static void test_notification_single()
   // Unblock the thread
   n.Notify();
 
-  EIGEN_SLEEP(1000);
+  std::this_thread::sleep_for(std::chrono::milliseconds(1000));
 
   // Verify the counter has been incremented
   VERIFY_IS_EQUAL(counter, 1);
@@ -50,10 +50,10 @@ static void test_notification_multiple()
   thread_pool.Schedule(func);
   thread_pool.Schedule(func);
   thread_pool.Schedule(func);
-  EIGEN_SLEEP(1000);
+  std::this_thread::sleep_for(std::chrono::milliseconds(1000));
   VERIFY_IS_EQUAL(counter, 0);
   n.Notify();
-  EIGEN_SLEEP(1000);
+  std::this_thread::sleep_for(std::chrono::milliseconds(1000));
   VERIFY_IS_EQUAL(counter, 4);
 }