From d9eb27597eabe5b7c17520f4f9b3f8a282d72573 Mon Sep 17 00:00:00 2001
From: Georgios Pinitas <georgios.pinitas@arm.com>
Date: Tue, 3 Apr 2018 13:44:29 +0100
Subject: COMPMID-797: Switch to new graph.

- Cleaned up build system

Change-Id: If2faa27ee5b31fa8b972836960ab3ef671059c8d
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/126435
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
---
 arm_compute/graph/frontend/IStream.h | 93 ++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 arm_compute/graph/frontend/IStream.h

(limited to 'arm_compute/graph/frontend/IStream.h')

diff --git a/arm_compute/graph/frontend/IStream.h b/arm_compute/graph/frontend/IStream.h
new file mode 100644
index 0000000000..13995f9cf9
--- /dev/null
+++ b/arm_compute/graph/frontend/IStream.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_GRAPH_ISTREAM_H__
+#define __ARM_COMPUTE_GRAPH_ISTREAM_H__
+
+#include "arm_compute/graph/frontend/Types.h"
+
+namespace arm_compute
+{
+namespace graph
+{
+// Forward declarations
+class Graph;
+
+namespace frontend
+{
+// Forward declarations
+class ILayer;
+
+/** Stream interface **/
+class IStream
+{
+public:
+    virtual ~IStream() = default;
+    /** Adds a layer to the stream
+     *
+     * @param[in] layer Layer to add
+     */
+    virtual void add_layer(ILayer &layer) = 0;
+    /** Returns the underlying graph
+     *
+     * @return Underlying graph
+     */
+    virtual Graph &graph() = 0;
+    /** Returns the underlying graph
+     *
+     * @return Underlying graph
+     */
+    virtual const Graph &graph() const = 0;
+    /** Returns the tail node of the Stream
+     *
+     * @return Tail Node ID
+     */
+    NodeID tail_node()
+    {
+        return _tail_node;
+    }
+    /** Returns the stream hints that are currently used
+     *
+     * @return Stream hints
+     */
+    StreamHints &hints()
+    {
+        return _hints;
+    }
+    /** Forwards tail of stream to a given nid
+     *
+     * @param[in] nid NodeID of the updated tail node
+     */
+    void forward_tail(NodeID nid)
+    {
+        _tail_node = (nid != NullTensorID) ? nid : _tail_node;
+    }
+
+protected:
+    StreamHints _hints     = {};              /**< Execution and algorithmic hints */
+    NodeID      _tail_node = { EmptyNodeID }; /**< NodeID pointing to the last(tail) node of the graph */
+};
+} // namespace frontend
+} // namespace graph
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH_ISTREAM_H__ */
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