52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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// Copyright (c) Facebook, Inc. and its affiliates. 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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// This header establishes compile-time pluggable implementations of hashed
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// container structures, so that deployments have the option of minimal
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// dependencies with ok performance (e.g. std::unordered_map) or more
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// dependencies with optimized performance (e.g. folly::F14FastMap).
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#pragma once
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#include "rocksdb/rocksdb_namespace.h"
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#ifdef USE_FOLLY
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#include <folly/container/F14Map.h>
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#include <folly/container/F14Set.h>
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namespace ROCKSDB_NAMESPACE {
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template <typename K, typename V>
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using UnorderedMap = folly::F14FastMap<K, V>;
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template <typename K, typename V, typename H>
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using UnorderedMapH = folly::F14FastMap<K, V, H>;
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template <typename K>
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using UnorderedSet = folly::F14FastSet<K>;
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} // namespace ROCKSDB_NAMESPACE
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#else
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#include <unordered_map>
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#include <unordered_set>
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namespace ROCKSDB_NAMESPACE {
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template <typename K, typename V>
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using UnorderedMap = std::unordered_map<K, V>;
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template <typename K, typename V, typename H>
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using UnorderedMapH = std::unordered_map<K, V, H>;
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template <typename K>
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using UnorderedSet = std::unordered_set<K>;
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} // namespace ROCKSDB_NAMESPACE
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#endif
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