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authorDamjan Marion <damarion@cisco.com>2016-12-19 23:05:39 +0100
committerDamjan Marion <damarion@cisco.com>2016-12-28 12:25:14 +0100
commit7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 (patch)
tree5de62f8dbd3a752f5a676ca600e43d2652d1ff1a /vppinfra/vppinfra/bihash_template.h
parent696f1adec0df3b8f161862566dd9c86174302658 (diff)
Reorganize source tree to use single autotools instance
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'vppinfra/vppinfra/bihash_template.h')
-rw-r--r--vppinfra/vppinfra/bihash_template.h214
1 files changed, 0 insertions, 214 deletions
diff --git a/vppinfra/vppinfra/bihash_template.h b/vppinfra/vppinfra/bihash_template.h
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-/*
- Copyright (c) 2014 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.
-*/
-
-/** @cond DOCUMENTATION_IS_IN_BIHASH_DOC_H */
-
-/*
- * Note: to instantiate the template multiple times in a single file,
- * #undef __included_bihash_template_h__...
- */
-#ifndef __included_bihash_template_h__
-#define __included_bihash_template_h__
-
-#include <vppinfra/heap.h>
-#include <vppinfra/format.h>
-#include <vppinfra/pool.h>
-
-#ifndef BIHASH_TYPE
-#error BIHASH_TYPE not defined
-#endif
-
-#define _bv(a,b) a##b
-#define __bv(a,b) _bv(a,b)
-#define BV(a) __bv(a,BIHASH_TYPE)
-
-#define _bvt(a,b) a##b##_t
-#define __bvt(a,b) _bvt(a,b)
-#define BVT(a) __bvt(a,BIHASH_TYPE)
-
-typedef struct BV (clib_bihash_value)
-{
- union
- {
- BVT (clib_bihash_kv) kvp[BIHASH_KVP_PER_PAGE];
- struct BV (clib_bihash_value) * next_free;
- };
-} BVT (clib_bihash_value);
-
-/*
- * This is shared across all uses of the template, so it needs
- * a "personal" #include recursion block
- */
-#ifndef __defined_clib_bihash_bucket_t__
-#define __defined_clib_bihash_bucket_t__
-typedef struct
-{
- union
- {
- struct
- {
- u32 offset;
- u8 pad[3];
- u8 log2_pages;
- };
- u64 as_u64;
- };
-} clib_bihash_bucket_t;
-#endif /* __defined_clib_bihash_bucket_t__ */
-
-typedef struct
-{
- BVT (clib_bihash_value) * values;
- clib_bihash_bucket_t *buckets;
- volatile u32 *writer_lock;
-
- BVT (clib_bihash_value) ** working_copies;
- clib_bihash_bucket_t saved_bucket;
-
- u32 nbuckets;
- u32 log2_nbuckets;
- u8 *name;
-
- BVT (clib_bihash_value) ** freelists;
- void *mheap;
-
-} BVT (clib_bihash);
-
-
-static inline void *BV (clib_bihash_get_value) (const BVT (clib_bihash) * h,
- uword offset)
-{
- u8 *hp = h->mheap;
- u8 *vp = hp + offset;
-
- return (void *) vp;
-}
-
-static inline uword BV (clib_bihash_get_offset) (const BVT (clib_bihash) * h,
- void *v)
-{
- u8 *hp, *vp;
-
- hp = (u8 *) h->mheap;
- vp = (u8 *) v;
-
- ASSERT ((vp - hp) < 0x100000000ULL);
- return vp - hp;
-}
-
-void BV (clib_bihash_init)
- (BVT (clib_bihash) * h, char *name, u32 nbuckets, uword memory_size);
-
-void BV (clib_bihash_free) (BVT (clib_bihash) * h);
-
-int BV (clib_bihash_add_del) (BVT (clib_bihash) * h,
- BVT (clib_bihash_kv) * add_v, int is_add);
-int BV (clib_bihash_search) (const BVT (clib_bihash) * h,
- BVT (clib_bihash_kv) * search_v,
- BVT (clib_bihash_kv) * return_v);
-
-void BV (clib_bihash_foreach_key_value_pair) (BVT (clib_bihash) * h,
- void *callback, void *arg);
-
-format_function_t BV (format_bihash);
-format_function_t BV (format_bihash_kvp);
-
-
-static inline int BV (clib_bihash_search_inline)
- (const BVT (clib_bihash) * h, BVT (clib_bihash_kv) * kvp)
-{
- u64 hash;
- u32 bucket_index;
- uword value_index;
- BVT (clib_bihash_value) * v;
- clib_bihash_bucket_t *b;
- int i;
-
- hash = BV (clib_bihash_hash) (kvp);
-
- bucket_index = hash & (h->nbuckets - 1);
- b = &h->buckets[bucket_index];
-
- if (b->offset == 0)
- return -1;
-
- hash >>= h->log2_nbuckets;
-
- v = BV (clib_bihash_get_value) (h, b->offset);
- value_index = hash & ((1 << b->log2_pages) - 1);
- v += value_index;
-
- for (i = 0; i < BIHASH_KVP_PER_PAGE; i++)
- {
- if (BV (clib_bihash_key_compare) (v->kvp[i].key, kvp->key))
- {
- *kvp = v->kvp[i];
- return 0;
- }
- }
- return -1;
-}
-
-static inline int BV (clib_bihash_search_inline_2)
- (const BVT (clib_bihash) * h,
- BVT (clib_bihash_kv) * search_key, BVT (clib_bihash_kv) * valuep)
-{
- u64 hash;
- u32 bucket_index;
- uword value_index;
- BVT (clib_bihash_value) * v;
- clib_bihash_bucket_t *b;
- int i;
-
- ASSERT (valuep);
-
- hash = BV (clib_bihash_hash) (search_key);
-
- bucket_index = hash & (h->nbuckets - 1);
- b = &h->buckets[bucket_index];
-
- if (b->offset == 0)
- return -1;
-
- hash >>= h->log2_nbuckets;
-
- v = BV (clib_bihash_get_value) (h, b->offset);
- value_index = hash & ((1 << b->log2_pages) - 1);
- v += value_index;
-
- for (i = 0; i < BIHASH_KVP_PER_PAGE; i++)
- {
- if (BV (clib_bihash_key_compare) (v->kvp[i].key, search_key->key))
- {
- *valuep = v->kvp[i];
- return 0;
- }
- }
- return -1;
-}
-
-
-#endif /* __included_bihash_template_h__ */
-
-/** @endcond */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */