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+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. 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 __NEURUN_COMPILER_BACKEND_RESOLVER_H__
+#define __NEURUN_COMPILER_BACKEND_RESOLVER_H__
+
+#include <set>
+#include <unordered_map>
+#include <typeindex>
+
+#include "util/logging.h"
+#include "util/config/ConfigManager.h"
+#include "backend/BackendManager.h"
+#include "backend/interface/IStageGenerator.h"
+
+namespace neurun
+{
+namespace compiler
+{
+
+class BackendResolver
+{
+public:
+ BackendResolver(const neurun::model::operand::Set &operands)
+ {
+ _backend_manager = std::make_shared<backend::BackendManager>(operands);
+
+ const auto backend_all_str =
+ config::ConfigManager::instance().get<std::string>("OP_BACKEND_ALLOPS");
+ if (backend_all_str.compare("none") != 0)
+ {
+ VERBOSE(BackendResolver) << "Use backend for all ops: " << backend_all_str << std::endl;
+#define OP(InternalName, IsNnApi, NnApiName) \
+ if (IsNnApi) \
+ { \
+ auto backend = _backend_manager->get(backend_all_str); \
+ _gen_map[typeid(model::operation::InternalName)] = backend; \
+ }
+#include "model/operation/Op.lst"
+#undef OP
+ }
+ else
+ {
+#define OP(InternalName, IsNnApi, NnApiName) \
+ if (IsNnApi) \
+ { \
+ const auto &backend_str = \
+ config::ConfigManager::instance().get<std::string>("OP_BACKEND_" #NnApiName); \
+ auto backend = _backend_manager->get(backend_str); \
+ VERBOSE(BackendResolver) << "backend for " << #NnApiName << ": " << backend_str << std::endl; \
+ _gen_map[typeid(model::operation::InternalName)] = backend; \
+ }
+
+#include "model/operation/Op.lst"
+#undef OP
+ }
+ }
+
+public:
+ const backend::Backend *getBackend(const std::type_index &type) { return _gen_map[type]; }
+ const backend::Backend *getDefaultBackend() const
+ {
+ backend::Backend *default_backend = _backend_manager->get("cpu");
+ return default_backend;
+ }
+
+private:
+ std::unordered_map<std::type_index, backend::Backend *> _gen_map;
+ std::shared_ptr<backend::BackendManager> _backend_manager;
+};
+
+} // namespace compiler
+} // namespace neurun
+
+#endif // __NEURUN_COMPILER_BACKEND_RESOLVER_H__