From 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Mon, 19 Dec 2016 23:05:39 +0100 Subject: Reorganize source tree to use single autotools instance Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion --- src/vppinfra/bihash_8_8.h | 98 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 src/vppinfra/bihash_8_8.h (limited to 'src/vppinfra/bihash_8_8.h') diff --git a/src/vppinfra/bihash_8_8.h b/src/vppinfra/bihash_8_8.h new file mode 100644 index 00000000..a0d6df2e --- /dev/null +++ b/src/vppinfra/bihash_8_8.h @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed 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. + */ +#undef BIHASH_TYPE + +#define BIHASH_TYPE _8_8 +#define BIHASH_KVP_PER_PAGE 4 + +#ifndef __included_bihash_8_8_h__ +#define __included_bihash_8_8_h__ + +#include +#include +#include +#include + +#if __SSE4_2__ +#include +#endif + +/** 8 octet key, 8 octet key value pair */ +typedef struct +{ + u64 key; /**< the key */ + u64 value; /**< the value */ +} clib_bihash_kv_8_8_t; + +/** Decide if a clib_bihash_kv_8_8_t instance is free + @param v- pointer to the (key,value) pair +*/ +static inline int +clib_bihash_is_free_8_8 (clib_bihash_kv_8_8_t * v) +{ + if (v->key == ~0ULL && v->value == ~0ULL) + return 1; + return 0; +} + +/** Hash a clib_bihash_kv_8_8_t instance + @param v - pointer to the (key,value) pair, hash the key (only) +*/ +static inline u64 +clib_bihash_hash_8_8 (clib_bihash_kv_8_8_t * v) +{ +#if __SSE4_2__ + return _mm_crc32_u64 (0, v->key); +#else + return clib_xxhash (v->key); +#endif +} + +/** Format a clib_bihash_kv_8_8_t instance + @param s - u8 * vector under construction + @param args (vararg) - the (key,value) pair to format + @return s - the u8 * vector under construction +*/ +static inline u8 * +format_bihash_kvp_8_8 (u8 * s, va_list * args) +{ + clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *); + + s = format (s, "key %llu value %llu", v->key, v->value); + return s; +} + +/** Compare two clib_bihash_kv_8_8_t instances + @param a - first key + @param b - second key +*/ +static inline int +clib_bihash_key_compare_8_8 (u64 a, u64 b) +{ + return a == b; +} + +#undef __included_bihash_template_h__ +#include + +#endif /* __included_bihash_8_8_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg