1 files changed, 26 insertions, 0 deletions
diff --git a/src/rocksdb/utilities/transactions/transaction_db_mutex_impl.h b/src/rocksdb/utilities/transactions/transaction_db_mutex_impl.h
new file mode 100644
index 000000000..fbee92832
--- /dev/null
+++ b/src/rocksdb/utilities/transactions/transaction_db_mutex_impl.h
@@ -0,0 +1,26 @@
+//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+
+#pragma once
+#ifndef ROCKSDB_LITE
+
+#include "rocksdb/utilities/transaction_db_mutex.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+class TransactionDBMutex;
+class TransactionDBCondVar;
+
+// Default implementation of TransactionDBMutexFactory.  May be overridden
+// by TransactionDBOptions.custom_mutex_factory.
+class TransactionDBMutexFactoryImpl : public TransactionDBMutexFactory {
+ public:
+  std::shared_ptr<TransactionDBMutex> AllocateMutex() override;
+  std::shared_ptr<TransactionDBCondVar> AllocateCondVar() override;
+};
+
+}  // namespace ROCKSDB_NAMESPACE
+
+#endif  // ROCKSDB_LITE