Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2015 Cisco and/or its affiliates.
       3             :  * Licensed under the Apache License, Version 2.0 (the "License");
       4             :  * you may not use this file except in compliance with the License.
       5             :  * You may obtain a copy of the License at:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       9             :  * Unless required by applicable law or agreed to in writing, software
      10             :  * distributed under the License is distributed on an "AS IS" BASIS,
      11             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             :  * See the License for the specific language governing permissions and
      13             :  * limitations under the License.
      14             :  */
      15             : #undef BIHASH_TYPE
      16             : #undef BIHASH_KVP_PER_PAGE
      17             : #undef BIHASH_32_64_SVM
      18             : #undef BIHASH_ENABLE_STATS
      19             : #undef BIHASH_KVP_AT_BUCKET_LEVEL
      20             : #undef BIHASH_LAZY_INSTANTIATE
      21             : #undef BIHASH_BUCKET_PREFETCH_CACHE_LINES
      22             : #undef BIHASH_USE_HEAP
      23             : 
      24             : #define BIHASH_TYPE _8_16
      25             : #define BIHASH_KVP_PER_PAGE 7
      26             : #define BIHASH_KVP_AT_BUCKET_LEVEL 1
      27             : #define BIHASH_LAZY_INSTANTIATE 0
      28             : #define BIHASH_BUCKET_PREFETCH_CACHE_LINES 2
      29             : #define BIHASH_USE_HEAP 1
      30             : 
      31             : #ifndef __included_bihash_8_16_h__
      32             : #define __included_bihash_8_16_h__
      33             : 
      34             : #include <vppinfra/heap.h>
      35             : #include <vppinfra/format.h>
      36             : #include <vppinfra/pool.h>
      37             : #include <vppinfra/xxhash.h>
      38             : #include <vppinfra/crc32.h>
      39             : 
      40             : /** 8 octet key, 8 octet key value pair */
      41             : typedef struct
      42             : {
      43             :   u64 key;                      /**< the key */
      44             :   u64 value[2];                 /**< the value */
      45             : } clib_bihash_kv_8_16_t;
      46             : 
      47             : static inline void
      48   263783000 : clib_bihash_mark_free_8_16 (clib_bihash_kv_8_16_t *v)
      49             : {
      50   263783000 :   v->value[0] = 0xFEEDFACE8BADF00DULL;
      51   263783000 : }
      52             : 
      53             : /** Decide if a clib_bihash_kv_8_16_t instance is free
      54             :     @param v- pointer to the (key,value) pair
      55             : */
      56             : static inline int
      57        3222 : clib_bihash_is_free_8_16 (clib_bihash_kv_8_16_t * v)
      58             : {
      59        3222 :   if (v->value[0] == 0xFEEDFACE8BADF00DULL)
      60        2324 :     return 1;
      61         898 :   return 0;
      62             : }
      63             : 
      64             : /** Hash a clib_bihash_kv_8_16_t instance
      65             :     @param v - pointer to the (key,value) pair, hash the key (only)
      66             : */
      67             : static inline u64
      68        1956 : clib_bihash_hash_8_16 (clib_bihash_kv_8_16_t * v)
      69             : {
      70             :   /* Note: to torture-test linear scan, make this fn return a constant */
      71             : #ifdef clib_crc32c_uses_intrinsics
      72        1956 :   return clib_crc32c ((u8 *) & v->key, 8);
      73             : #else
      74             :   return clib_xxhash (v->key);
      75             : #endif
      76             : }
      77             : 
      78             : /** Format a clib_bihash_kv_8_16_t instance
      79             :     @param s - u8 * vector under construction
      80             :     @param args (vararg) - the (key,value) pair to format
      81             :     @return s - the u8 * vector under construction
      82             : */
      83             : static inline u8 *
      84           0 : format_bihash_kvp_8_16 (u8 * s, va_list * args)
      85             : {
      86           0 :   clib_bihash_kv_8_16_t *v = va_arg (*args, clib_bihash_kv_8_16_t *);
      87             : 
      88             :   s =
      89           0 :     format (s, "key %llx value [%llx,%llx]", v->key, v->value[0], v->value[1]);
      90           0 :   return s;
      91             : }
      92             : 
      93             : /** Compare two clib_bihash_kv_8_16_t instances
      94             :     @param a - first key
      95             :     @param b - second key
      96             : */
      97             : static inline int
      98         574 : clib_bihash_key_compare_8_16 (u64 a, u64 b)
      99             : {
     100         574 :   return a == b;
     101             : }
     102             : 
     103             : #undef __included_bihash_template_h__
     104             : #include <vppinfra/bihash_template.h>
     105             : 
     106             : #endif /* __included_bihash_8_16_h__ */
     107             : 
     108             : /*
     109             :  * fd.io coding-style-patch-verification: ON
     110             :  *
     111             :  * Local Variables:
     112             :  * eval: (c-set-style "gnu")
     113             :  * End:
     114             :  */