fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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29 lines
770 B
29 lines
770 B
7 years ago
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#include "rocksdb/types.h"
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namespace rocksdb {
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class WritePreparedTxnDB;
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// Callback class created by WritePreparedTxnDB to check if a key
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// is visible by a snapshot.
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class SnapshotChecker {
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public:
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explicit SnapshotChecker(WritePreparedTxnDB* txn_db);
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bool IsInSnapshot(SequenceNumber sequence,
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SequenceNumber snapshot_sequence) const;
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private:
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#ifndef ROCKSDB_LITE
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const WritePreparedTxnDB* const txn_db_;
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#endif // !ROCKSDB_LITE
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};
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} // namespace rocksdb
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