302b25a00e
Type: improvement this save the cache miss on the protect structure. Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: I867d5e49df5edfd6b368f17a34747f32840080e4
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#undef BIHASH_TYPE
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#undef BIHASH_KVP_PER_PAGE
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#undef BIHASH_32_64_SVM
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#undef BIHASH_ENABLE_STATS
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#undef BIHASH_KVP_AT_BUCKET_LEVEL
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#undef BIHASH_LAZY_INSTANTIATE
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#undef BIHASH_BUCKET_PREFETCH_CACHE_LINES
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#undef BIHASH_USE_HEAP
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#define BIHASH_TYPE _8_16
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#define BIHASH_KVP_PER_PAGE 7
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#define BIHASH_KVP_AT_BUCKET_LEVEL 1
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#define BIHASH_LAZY_INSTANTIATE 0
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#define BIHASH_BUCKET_PREFETCH_CACHE_LINES 2
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#define BIHASH_USE_HEAP 1
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#ifndef __included_bihash_8_16_h__
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#define __included_bihash_8_16_h__
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#include <vppinfra/heap.h>
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#include <vppinfra/format.h>
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#include <vppinfra/pool.h>
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#include <vppinfra/xxhash.h>
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#include <vppinfra/crc32.h>
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/** 8 octet key, 8 octet key value pair */
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typedef struct
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{
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u64 key; /**< the key */
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u64 value[2]; /**< the value */
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} clib_bihash_kv_8_16_t;
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/** Decide if a clib_bihash_kv_8_16_t instance is free
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@param v- pointer to the (key,value) pair
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*/
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static inline int
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clib_bihash_is_free_8_16 (clib_bihash_kv_8_16_t * v)
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{
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if (v->key == ~0ULL && v->value[0] == ~0ULL && v->value[1] == ~0ULL)
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return 1;
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return 0;
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}
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/** Hash a clib_bihash_kv_8_16_t instance
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@param v - pointer to the (key,value) pair, hash the key (only)
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*/
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static inline u64
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clib_bihash_hash_8_16 (clib_bihash_kv_8_16_t * v)
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{
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/* Note: to torture-test linear scan, make this fn return a constant */
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#ifdef clib_crc32c_uses_intrinsics
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return clib_crc32c ((u8 *) & v->key, 8);
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#else
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return clib_xxhash (v->key);
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#endif
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}
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/** Format a clib_bihash_kv_8_16_t instance
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@param s - u8 * vector under construction
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@param args (vararg) - the (key,value) pair to format
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@return s - the u8 * vector under construction
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*/
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static inline u8 *
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format_bihash_kvp_8_16 (u8 * s, va_list * args)
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{
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clib_bihash_kv_8_16_t *v = va_arg (*args, clib_bihash_kv_8_16_t *);
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s =
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format (s, "key %llu value [%ll,%llx]u", v->key, v->value[0],
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v->value[1]);
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return s;
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}
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/** Compare two clib_bihash_kv_8_16_t instances
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@param a - first key
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@param b - second key
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*/
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static inline int
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clib_bihash_key_compare_8_16 (u64 a, u64 b)
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{
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return a == b;
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}
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#undef __included_bihash_template_h__
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#include <vppinfra/bihash_template.h>
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#endif /* __included_bihash_8_16_h__ */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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