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diff --git a/runtime/contrib/mlapse/tfl/mlapse/multicast_observer.h b/runtime/contrib/mlapse/tfl/mlapse/multicast_observer.h
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+/*
+ * Copyright (c) 2019 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 __MLAPSE_MULTICAST_OBSERER_H__
+#define __MLAPSE_MULTICAST_OBSERER_H__
+
+#include "mlapse/benchmark_observer.h"
+
+#include <memory>
+#include <vector>
+
+namespace mlapse
+{
+
+class MulticastObserver final : public BenchmarkObserver
+{
+public:
+ MulticastObserver() = default;
+
+public:
+ void append(std::unique_ptr<BenchmarkObserver> &&o) { _observers.emplace_back(std::move(o)); }
+
+public:
+ void notify(const NotificationArg<PhaseBegin> &arg) final
+ {
+ for (const auto &o : _observers)
+ {
+ o->notify(arg);
+ }
+ }
+
+ void notify(const NotificationArg<PhaseEnd> &arg) final
+ {
+ for (const auto &o : _observers)
+ {
+ o->notify(arg);
+ }
+ }
+
+ void notify(const NotificationArg<IterationBegin> &arg) final
+ {
+ for (const auto &o : _observers)
+ {
+ o->notify(arg);
+ }
+ }
+
+ void notify(const NotificationArg<IterationEnd> &arg) final
+ {
+ for (const auto &o : _observers)
+ {
+ o->notify(arg);
+ }
+ }
+
+private:
+ std::vector<std::unique_ptr<BenchmarkObserver>> _observers;
+};
+
+} // namespace mlapse
+
+#endif // __MLAPSE_MULTICAST_OBSERER_H__