/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #ifndef INCLUDED_STORE_SOURCE_STORCACH_HXX #define INCLUDED_STORE_SOURCE_STORCACH_HXX #include #include #include #include #include "object.hxx" namespace rtl { template class Reference; } namespace store { struct PageData; } namespace store { struct Entry; class PageCache : public store::OStoreObject { // Representation static size_t const theTableSize = 32; static_assert((theTableSize & (theTableSize-1)) == 0, "table size should be a power of 2"); Entry ** m_hash_table; Entry * m_hash_table_0[theTableSize] = {}; size_t m_hash_size; size_t m_hash_shift; size_t const m_page_shift; size_t m_hash_entries; // total number of entries in table. size_t m_nHit; size_t m_nMissed; static int hash_Impl(sal_uInt32 a, size_t s, size_t q, size_t m) { return static_cast(((a + (a >> s) + (a >> (s << 1))) >> q) & m); } int hash_index_Impl (sal_uInt32 nOffset) { return hash_Impl(nOffset, m_hash_shift, m_page_shift, m_hash_size - 1); } Entry * lookup_Impl (Entry * entry, sal_uInt32 nOffset); void rescale_Impl (std::size_t new_size); public: explicit PageCache (sal_uInt16 nPageSize); PageCache(const PageCache&) = delete; PageCache& operator=(const PageCache&) = delete; /** load. */ storeError lookupPageAt ( std::shared_ptr & rxPage, sal_uInt32 nOffset); /** insert. */ storeError insertPageAt ( std::shared_ptr const & rxPage, sal_uInt32 nOffset); /** update, or insert. */ storeError updatePageAt ( std::shared_ptr const & rxPage, sal_uInt32 nOffset); /** remove (invalidate). */ storeError removePageAt ( sal_uInt32 nOffset); protected: virtual ~PageCache() override; }; storeError PageCache_createInstance ( rtl::Reference< store::PageCache > & rxCache, sal_uInt16 nPageSize ); } // namespace store #endif // INCLUDED_STORE_SOURCE_STORCACH_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ 04.6'>distro/collabora/co-24.04.6 LibreOffice 核心代码仓库文档基金会

path: root/desktop/Executable_smath.mk

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