COMPMID-666: Adds the ability to import backing memory in a Tensor(CPU).

Change-Id: I62b843b544fe9048837fd64c22e970fc6a0aaf23
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/94881
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/arm_compute/runtime/Memory.h b/arm_compute/runtime/Memory.h
new file mode 100644
index 0000000000..98bbb70239
--- /dev/null
+++ b/arm_compute/runtime/Memory.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2017 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_MEMORY_H__
+#define __ARM_COMPUTE_MEMORY_H__
+
+#include <cstddef>
+#include <memory>
+
+namespace arm_compute
+{
+/** CPU implementation of memory object */
+class Memory
+{
+public:
+    /** Default Constructor */
+    Memory();
+    /** Default Constructor
+     *
+     * @note Ownership of the memory is transferred to this object
+     *
+     * @param[in] memory Memory to be imported
+     */
+    Memory(std::shared_ptr<uint8_t> memory);
+    /** Default Constructor
+     *
+     * @note Ownership of the memory is not transferred to this object.
+     *       Thus management (allocate/free) should be done by the client.
+     *
+     * @param[in] memory Memory to be imported
+     */
+    Memory(uint8_t *memory);
+    /** Allow instances of this class to be copied */
+    Memory(const Memory &) = default;
+    /** Allow instances of this class to be copy assigned */
+    Memory &operator=(const Memory &) = default;
+    /** Allow instances of this class to be moved */
+    Memory(Memory &&) noexcept = default;
+    /** Allow instances of this class to be move assigned */
+    Memory &operator=(Memory &&) noexcept = default;
+
+    /** Returns the pointer to the allocated data.
+     *
+     * @return Pointer to the allocated data
+     */
+    uint8_t *buffer();
+    /** Returns the pointer to the allocated data.
+     *
+     * @return Pointer to the allocated data
+     */
+    uint8_t *buffer() const;
+    /** Handle of internal memory
+     *
+     * @return Handle of memory
+     */
+    uint8_t **handle();
+
+private:
+    uint8_t                 *_memory;
+    std::shared_ptr<uint8_t> _memory_owned;
+};
+}
+#endif /* __ARM_COMPUTE_MEMORY_H__ */