Add several operations to the StreamExecutor API

No implementations are yet provided for these operations.
Change: 144743665

1 files changed, 48 insertions, 0 deletions

diff --git a/tensorflow/stream_executor/host_buffer.h b/tensorflow/stream_executor/host_buffer.h
new file mode 100644
index 0000000000..8fa542e9ff
--- /dev/null
+++ b/tensorflow/stream_executor/host_buffer.h
@@ -0,0 +1,48 @@
+/* Copyright 2017 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_STREAM_EXECUTOR_HOST_BUFFER_H_
+#define TENSORFLOW_STREAM_EXECUTOR_HOST_BUFFER_H_
+
+#include "tensorflow/stream_executor/dnn.h"
+
+namespace perftools {
+namespace gputools {
+
+// A HostBuffer is a block of memory in host memory containing the data for a
+// dnn::BatchDescriptor using a device-dependent memory layout.
+// Derived classes provide methods to construct a HostBuffer for a specific
+// device, and to copy data in and out of the buffer.
+class HostBuffer {
+ public:
+  const dnn::BatchDescriptor& descriptor() const { return descriptor_; }
+
+  // Returns a string describing the HostBuffer.
+  virtual string AsString() const = 0;
+
+ protected:
+  // Construct a HostBuffer from the supplied dnn::BatchDescriptor.
+  explicit HostBuffer(const dnn::BatchDescriptor& descriptor)
+      : descriptor_(descriptor) {}
+  virtual ~HostBuffer() {}
+
+ private:
+  const dnn::BatchDescriptor descriptor_;
+};
+
+}  // namespace gputools
+}  // namespace perftools
+
+#endif  // TENSORFLOW_STREAM_EXECUTOR_HOST_BUFFER_H_