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+/*
+ * Copyright (c) 2022-2023 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 SRC_DYNAMIC_FUSION_SKETCH_GPU_GPUKERNELCOMPONENTSTREAM
+#define SRC_DYNAMIC_FUSION_SKETCH_GPU_GPUKERNELCOMPONENTSTREAM
+
+#include "arm_compute/dynamic_fusion/sketch/MemoryDescriptor.h"
+
+#include "src/dynamic_fusion/sketch/gpu/GpuKernelComponentGroup.h"
+#include "src/dynamic_fusion/sketch/gpu/GpuWorkloadSourceCode.h"
+
+namespace arm_compute
+{
+namespace experimental
+{
+namespace dynamic_fusion
+{
+class GpuComponentServices;
+class IGpuKernelComponent;
+
+/** A linear sequence of component groups serialized from the @ref GpuKernelComponentGraph
+ * Each component group in the stream denotes a complete kernel that may consist of multiple components
+ *
+ * The main purposes of this class are:
+ * - Facilitate component fusion algorithm by allowing insertions of new component groups into the stream
+ * - Invoke kernel writer and assemble the final @ref GpuWorkloadSourceCode
+ */
+class GpuKernelComponentStream
+{
+public:
+ /** Constructor
+ *
+ * @param[in] context @ref GpuWorkloadContext to be used throughout the stream
+ * @param[in] services @ref GpuComponentServices to be used throughout the stream
+ * @param[in] mem_map @ref MemoryDescriptor map used to assemble the @ref GpuWorkloadSourceCode
+ */
+ GpuKernelComponentStream(GpuWorkloadContext *context,
+ GpuComponentServices *services,
+ const MemoryDescriptorMap &mem_map);
+ /** Allow instances of this class to be copy constructed */
+ GpuKernelComponentStream(const GpuKernelComponentStream &stream) = default;
+ /** Allow instances of this class to be copied */
+ GpuKernelComponentStream &operator=(const GpuKernelComponentStream &stream) = default;
+ /** Allow instances of this class to be move constructed */
+ GpuKernelComponentStream(GpuKernelComponentStream &&stream) = default;
+ /** Allow instances of this class to be moved */
+ GpuKernelComponentStream &operator=(GpuKernelComponentStream &&stream) = default;
+ /** Generate and assemble @ref GpuWorkloadSourceCode from the stream */
+ GpuWorkloadSourceCode write_workload_code();
+ /** Insert a new component group in the stream.
+ * Subsequent components are added to this group until end of stream or the next new_component_group is called
+ */
+ void new_component_group();
+ /** Add a component to the previously created component group
+ * Throw an error if no component group is present in the stream
+ *
+ * @param[in] component Component to be inserted
+ *
+ * @return true If the operation is successful
+ * @return false Otherwise
+ */
+ bool add_component(IGpuKernelComponent *component);
+
+private:
+ GpuWorkloadContext *_context;
+ GpuComponentServices *_services;
+ std::vector<GpuKernelComponentGroup> _component_groups{};
+ MemoryDescriptorMap _mem_map{};
+};
+} // namespace dynamic_fusion
+} // namespace experimental
+} // namespace arm_compute
+#endif /* SRC_DYNAMIC_FUSION_SKETCH_GPU_GPUKERNELCOMPONENTSTREAM */