93 lines
3.2 KiB
C++
93 lines
3.2 KiB
C++
/* Copyright (c) 2018, 2021, Alibaba and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL/PolarDB-X Engine hereby grant you an
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additional permission to link the program and your derivative works with the
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separately licensed software that they have included with
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MySQL/PolarDB-X Engine.
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This program 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, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/** @file include/lizard0ut.h
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Lizard utility
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Created 2020-06-04 by Jianwei.zhao
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*******************************************************/
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#include "lizard0ut.h"
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#include "univ.i"
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#include "lizard0cleanout.h"
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namespace lizard {
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template <typename Element_type, typename Object_type, std::size_t Prealloc>
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Partition<Element_type, Object_type, Prealloc>::Partition()
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: m_size(Prealloc), m_counter(0), m_parts() {
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Element_type *elem;
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for (std::size_t i = 0; i < m_size; i++) {
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elem = static_cast<Element_type *>(ut_zalloc_nokey(sizeof(Element_type)));
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new (elem) Element_type();
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m_parts.push_back(elem);
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}
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}
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template <typename Element_type, typename Object_type, std::size_t Prealloc>
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Partition<Element_type, Object_type, Prealloc>::~Partition() {
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Element_type *elem;
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for (std::size_t i = 0; i < m_size; i++) {
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elem = m_parts.at(i);
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elem->~Element_type();
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ut_free(elem);
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}
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m_parts.clear();
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m_size = 0;
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m_counter = 0;
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}
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template <typename Element_type, typename Object_type, std::size_t Prealloc>
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bool Partition<Element_type, Object_type, Prealloc>::insert(
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Object_type object) {
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Element_type *elem;
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bool res;
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std::size_t i;
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for (i = 0; i < m_size; i++) {
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elem = m_parts.at(i);
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res = elem->insert(object);
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if (res == false) break;
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}
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ut_ad(i == 0 || i == m_size);
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return res;
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}
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template <typename Element_type, typename Object_type, std::size_t Prealloc>
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bool Partition<Element_type, Object_type, Prealloc>::exist(Object_type object) {
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Element_type *elem;
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m_counter++;
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elem = m_parts.at(m_counter.load() % m_size);
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return elem->exist(object);
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}
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template Partition<Undo_logs, Undo_hdr, TXN_UNDO_HASH_PARTITIONS>::Partition();
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template Partition<Undo_logs, Undo_hdr, TXN_UNDO_HASH_PARTITIONS>::~Partition();
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template bool Partition<Undo_logs, Undo_hdr, TXN_UNDO_HASH_PARTITIONS>::insert(
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Undo_hdr object);
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template bool Partition<Undo_logs, Undo_hdr, TXN_UNDO_HASH_PARTITIONS>::exist(
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Undo_hdr object);
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} // namespace lizard
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