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+// Copyright (c) 2023, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of
+// conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice,
+// this list
+// of conditions and the following disclaimer in the documentation and/or
+// other materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors
+// may be
+// used to endorse or promote products derived from this software without
+// specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+#include <memory>
+
+#include "blockchain.h"
+#include "tx_pool.h"
+
+namespace cryptonote
+{
+/**
+ * @brief Container for safely constructing Blockchain and tx_memory_pool classes
+ *
+ * The reason for this class existing is that the constructors for both Blockchain and
+ * tx_memory_pool take a reference for tx_memory_pool and Blockchain, respectively. Because of this
+ * circular reference, it is annoying/unsafe to construct these normally. This class guarantees that
+ * we don't make any silly mistakes with pointers / dangling references.
+ */
+struct BlockchainAndPool
+{
+ Blockchain blockchain;
+ tx_memory_pool tx_pool;
+
+ BlockchainAndPool(): blockchain(tx_pool), tx_pool(blockchain) {}
+};
+}