Revision ebcc8ae1d3875aa9529b05b31c3da396cdf0c7bc authored by Siying Dong on 02 April 2019, 16:57:35 UTC, committed by Facebook Github Bot on 02 April 2019, 17:00:38 UTC
Summary: This reverts commit f29dc1b90641e7f44b14f932e3866c5840391cd5. In BlockBasedTableIterator, index_iter_->key() is sometimes a user key, so it is wrong to call ExtractUserKey() against it. This is a bug introduced by #5101. Temporarily revert the diff to keep the branch clean. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5132 Differential Revision: D14718584 Pulled By: siying fbshipit-source-id: 0ac55dc9b5dbc18c7809092146bdf7eb9364b9ad
1 parent fa1b558
memory_usage.h
// 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
#include <unordered_map>
namespace rocksdb {
// Helper methods to estimate memroy usage by std containers.
template <class Key, class Value, class Hash>
size_t ApproximateMemoryUsage(
const std::unordered_map<Key, Value, Hash>& umap) {
typedef std::unordered_map<Key, Value, Hash> Map;
return sizeof(umap) +
// Size of all items plus a next pointer for each item.
(sizeof(typename Map::value_type) + sizeof(void*)) * umap.size() +
// Size of hash buckets.
umap.bucket_count() * sizeof(void*);
}
} // namespace rocksdb
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