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/* -*- 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_SAL_RTL_ALLOC_CACHE_HXX
#define INCLUDED_SAL_RTL_ALLOC_CACHE_HXX
#include <sal/types.h>
#include <rtl/alloc.h>
#include "alloc_impl.hxx"
/**
@internal
*/
struct rtl_cache_stat_type
{
sal_uInt64 m_alloc;
sal_uInt64 m_free;
sal_Size m_mem_total;
sal_Size m_mem_alloc;
};
/**
@internal
*/
struct rtl_cache_bufctl_type
{
rtl_cache_bufctl_type * m_next; /* linkage */
sal_uIntPtr m_addr; /* buffer address */
sal_uIntPtr m_slab; /* parent slab address */
};
/**
@internal
*/
struct rtl_cache_slab_type
{
rtl_cache_slab_type * m_slab_next; /* slab linkage */
rtl_cache_slab_type * m_slab_prev; /* slab linkage */
sal_Size m_ntypes; /* number of buffers used */
sal_uIntPtr m_data; /* buffer start addr */
sal_uIntPtr m_bp; /* free buffer linkage 'base pointer' */
rtl_cache_bufctl_type * m_sp; /* free buffer linkage 'stack pointer' */
};
/**
@internal
*/
#define RTL_CACHE_MAGAZINE_SIZE 61
struct rtl_cache_magazine_type
{
rtl_cache_magazine_type * m_mag_next; /* depot linkage */
sal_Size m_mag_size;
sal_Size m_mag_used;
void * m_objects[RTL_CACHE_MAGAZINE_SIZE];
};
/**
@internal
*/
struct rtl_cache_depot_type
{
/* magazine list */
rtl_cache_magazine_type * m_mag_next; /* linkage */
sal_Size m_mag_count; /* count */
/* working set parameters */
sal_Size m_curr_min;
sal_Size m_prev_min;
};
/**
@internal
*/
#define RTL_CACHE_HASH_SIZE 8
#define RTL_CACHE_FEATURE_HASH 1
#define RTL_CACHE_FEATURE_BULKDESTROY 2
#define RTL_CACHE_FEATURE_RESCALE 4 /* within hash rescale operation */
struct rtl_cache_st
{
/* linkage */
rtl_cache_type * m_cache_next;
rtl_cache_type * m_cache_prev;
/* properties */
char m_name[RTL_CACHE_NAME_LENGTH + 1];
long m_features;
sal_Size m_type_size; /* const */
sal_Size m_type_align; /* const */
sal_Size m_type_shift; /* log2(m_type_size); const */
int (SAL_CALL * m_constructor)(void * obj, void * userarg); /* const */
void (SAL_CALL * m_destructor) (void * obj, void * userarg); /* const */
void * m_userarg;
/* slab layer */
rtl_memory_lock_type m_slab_lock;
rtl_cache_stat_type m_slab_stats;
rtl_arena_type * m_source; /* slab supplier; const */
sal_Size m_slab_size; /* const */
sal_Size m_ntypes; /* number of buffers per slab; const */
sal_Size m_ncolor; /* next slab color */
sal_Size m_ncolor_max; /* max. slab color */
rtl_cache_slab_type m_free_head;
rtl_cache_slab_type m_used_head;
rtl_cache_bufctl_type ** m_hash_table;
rtl_cache_bufctl_type * m_hash_table_0[RTL_CACHE_HASH_SIZE];
sal_Size m_hash_size; /* m_hash_mask + 1 */
sal_Size m_hash_shift; /* log2(m_hash_size) */
/* depot layer */
rtl_memory_lock_type m_depot_lock;
rtl_cache_depot_type m_depot_empty;
rtl_cache_depot_type m_depot_full;
rtl_cache_type * m_magazine_cache; /* magazine supplier; const */
/* cpu layer */
rtl_cache_magazine_type * m_cpu_curr;
rtl_cache_magazine_type * m_cpu_prev;
rtl_cache_stat_type m_cpu_stats;
};
#endif // INCLUDED_SAL_RTL_ALLOC_CACHE_HXX
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