156 lines
4.6 KiB
C++
156 lines
4.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SAL_RTL_ALLOC_CACHE_HXX
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#define INCLUDED_SAL_RTL_ALLOC_CACHE_HXX
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#include <sal/types.h>
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#include <rtl/alloc.h>
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#include "alloc_impl.hxx"
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/**
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@internal
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*/
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struct rtl_cache_stat_type
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{
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sal_uInt64 m_alloc;
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sal_uInt64 m_free;
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sal_Size m_mem_total;
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sal_Size m_mem_alloc;
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};
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/**
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@internal
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*/
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struct rtl_cache_bufctl_type
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{
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rtl_cache_bufctl_type * m_next; /* linkage */
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sal_uIntPtr m_addr; /* buffer address */
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sal_uIntPtr m_slab; /* parent slab address */
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};
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/**
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@internal
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*/
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struct rtl_cache_slab_type
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{
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rtl_cache_slab_type * m_slab_next; /* slab linkage */
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rtl_cache_slab_type * m_slab_prev; /* slab linkage */
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sal_Size m_ntypes; /* number of buffers used */
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sal_uIntPtr m_data; /* buffer start addr */
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sal_uIntPtr m_bp; /* free buffer linkage 'base pointer' */
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rtl_cache_bufctl_type * m_sp; /* free buffer linkage 'stack pointer' */
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};
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/**
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@internal
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*/
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#define RTL_CACHE_MAGAZINE_SIZE 61
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struct rtl_cache_magazine_type
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{
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rtl_cache_magazine_type * m_mag_next; /* depot linkage */
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sal_Size m_mag_size;
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sal_Size m_mag_used;
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void * m_objects[RTL_CACHE_MAGAZINE_SIZE];
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};
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/**
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@internal
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*/
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struct rtl_cache_depot_type
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{
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/* magazine list */
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rtl_cache_magazine_type * m_mag_next; /* linkage */
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sal_Size m_mag_count; /* count */
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/* working set parameters */
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sal_Size m_curr_min;
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sal_Size m_prev_min;
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};
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/**
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@internal
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*/
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#define RTL_CACHE_HASH_SIZE 8
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#define RTL_CACHE_FEATURE_HASH 1
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#define RTL_CACHE_FEATURE_BULKDESTROY 2
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#define RTL_CACHE_FEATURE_RESCALE 4 /* within hash rescale operation */
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struct rtl_cache_st
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{
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/* linkage */
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rtl_cache_type * m_cache_next;
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rtl_cache_type * m_cache_prev;
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/* properties */
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char m_name[RTL_CACHE_NAME_LENGTH + 1];
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long m_features;
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sal_Size m_type_size; /* const */
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sal_Size m_type_align; /* const */
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sal_Size m_type_shift; /* log2(m_type_size); const */
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int (SAL_CALL * m_constructor)(void * obj, void * userarg); /* const */
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void (SAL_CALL * m_destructor) (void * obj, void * userarg); /* const */
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void * m_userarg;
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/* slab layer */
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rtl_memory_lock_type m_slab_lock;
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rtl_cache_stat_type m_slab_stats;
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rtl_arena_type * m_source; /* slab supplier; const */
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sal_Size m_slab_size; /* const */
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sal_Size m_ntypes; /* number of buffers per slab; const */
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sal_Size m_ncolor; /* next slab color */
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sal_Size m_ncolor_max; /* max. slab color */
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rtl_cache_slab_type m_free_head;
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rtl_cache_slab_type m_used_head;
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rtl_cache_bufctl_type ** m_hash_table;
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rtl_cache_bufctl_type * m_hash_table_0[RTL_CACHE_HASH_SIZE];
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sal_Size m_hash_size; /* m_hash_mask + 1 */
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sal_Size m_hash_shift; /* log2(m_hash_size) */
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/* depot layer */
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rtl_memory_lock_type m_depot_lock;
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rtl_cache_depot_type m_depot_empty;
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rtl_cache_depot_type m_depot_full;
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rtl_cache_type * m_magazine_cache; /* magazine supplier; const */
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/* cpu layer */
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rtl_cache_magazine_type * m_cpu_curr;
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rtl_cache_magazine_type * m_cpu_prev;
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rtl_cache_stat_type m_cpu_stats;
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};
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#endif // INCLUDED_SAL_RTL_ALLOC_CACHE_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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