| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the 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 */ |