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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: alloc_cache.h,v $
* $Revision: 1.3 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef INCLUDED_RTL_ALLOC_CACHE_H
#define INCLUDED_RTL_ALLOC_CACHE_H
#include "sal/types.h"
#include "rtl/alloc.h"
#include "alloc_impl.h"
#ifdef __cplusplus
extern "C" {
#endif
/** rtl_cache_stat_type
* @internal
*/
typedef struct rtl_cache_stat_st rtl_cache_stat_type;
struct rtl_cache_stat_st
{
sal_uInt64 m_alloc;
sal_uInt64 m_free;
sal_Size m_mem_total;
sal_Size m_mem_alloc;
};
/** rtl_cache_bufctl_type
* @internal
*/
typedef struct rtl_cache_bufctl_st rtl_cache_bufctl_type;
struct rtl_cache_bufctl_st
{
rtl_cache_bufctl_type * m_next; /* linkage */
sal_uIntPtr m_addr; /* buffer address */
sal_uIntPtr m_slab; /* parent slab address */
};
/** rtl_cache_slab_type
* @internal
*/
typedef struct rtl_cache_slab_st rtl_cache_slab_type;
struct rtl_cache_slab_st
{
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' */
};
/** rtl_cache_magazine_type
* @internal
*/
#define RTL_CACHE_MAGAZINE_SIZE 61
typedef struct rtl_cache_magazine_st rtl_cache_magazine_type;
struct rtl_cache_magazine_st
{
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];
};
/** rtl_cache_depot_type
* @internal
*/
typedef struct rtl_cache_depot_st rtl_cache_depot_type;
struct rtl_cache_depot_st
{
/* 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;
};
/** rtl_cache_type
* @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 (SAL_CALL * m_reclaim) (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;
};
#ifdef __cplusplus
}
#endif
#endif /* INCLUDED_RTL_ALLOC_CACHE_H */
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