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https://github.com/scylladb/scylladb.git
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19ffc9455d
" The range_tombstone_list provides an abstraction to work with sorted list of range tombstones with methods to add/retrive them. However, there's a tombstones() method that just returns modifiable reference to the used collection (boost::intrusive_set) which makes it hard to track the exact usage of it. This set encapsulates the collaction of range tombstones inside the mentioned ..._list class. tests: unit(dev) " * 'br-range-tombstone-encapsulate-collection' of https://github.com/xemul/scylla: range_tombstone_list: Do not expose internal collection range_tombstone_list: Introduce and use pop-and-lock helper range_tombstone_list: Introduce and use pop_as<>() flat_mutation_reader: Use range_tombstone_list begin/end API repair: Mark some partition_hasher methods noexcept hashers: Mark hash updates noexcept
77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
/*
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* Copyright (C) 2018 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "bytes.hh"
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#include "utils/serialization.hh"
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Warray-bounds"
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#include <xxhash.h>
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#pragma GCC diagnostic pop
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#include <array>
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class xx_hasher {
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static constexpr size_t digest_size = 16;
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XXH64_state_t _state;
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public:
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explicit xx_hasher(uint64_t seed = 0) noexcept {
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XXH64_reset(&_state, seed);
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}
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void update(const char* ptr, size_t length) noexcept {
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XXH64_update(&_state, ptr, length);
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}
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bytes finalize() {
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bytes digest{bytes::initialized_later(), digest_size};
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serialize_to(digest.begin());
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return digest;
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}
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std::array<uint8_t, digest_size> finalize_array() {
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std::array<uint8_t, digest_size> digest;
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serialize_to(digest.begin());
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return digest;
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}
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uint64_t finalize_uint64() {
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return XXH64_digest(&_state);
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}
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private:
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template<typename OutIterator>
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void serialize_to(OutIterator&& out) {
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serialize_int64(out, 0);
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serialize_int64(out, finalize_uint64());
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}
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};
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// Used to specialize templates in order to fix a bug
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// in handling null values: #4567
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class legacy_xx_hasher_without_null_digest : public xx_hasher {
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public:
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explicit legacy_xx_hasher_without_null_digest(uint64_t seed = 0) noexcept : xx_hasher(seed) {}
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};
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