Make SetNumThreads apply to the eigen threads. (This creates a dependency on eigen!)

PiperOrigin-RevId: 188504172

1 files changed, 34 insertions, 0 deletions

diff --git a/tensorflow/contrib/lite/kernels/eigen_support.h b/tensorflow/contrib/lite/kernels/eigen_support.h
new file mode 100644
index 0000000000..d47e691123
--- /dev/null
+++ b/tensorflow/contrib/lite/kernels/eigen_support.h
@@ -0,0 +1,34 @@
+/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+#ifndef TENSORFLOW_CONTRIB_LITE_KERNELS_EIGEN_SUPPORT_H_
+#define TENSORFLOW_CONTRIB_LITE_KERNELS_EIGEN_SUPPORT_H_
+
+#include "tensorflow/contrib/lite/context.h"
+
+namespace tflite {
+namespace eigen_support {
+
+// Let the framework know that the op will be using Eigen. If necessary a set of
+// temporary Eigen objects might be created and placed in 'context'.
+void IncrementUsageCounter(TfLiteContext* context);
+
+// Let the framework know that the op stopped using Eigen. If there are no more
+// usages all temporary Eigen objects will be deleted.
+void DecrementUsageCounter(TfLiteContext* context);
+
+}  // namespace eigen_support
+}  // namespace tflite
+
+#endif  // TENSORFLOW_CONTRIB_LITE_KERNELS_EIGEN_SUPPORT_H_