op_hash.h

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/* This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/>.
 */

/* Code: */

#ifndef OPIC_HASH_OP_HASH_H
#define OPIC_HASH_OP_HASH_H 1

#include "opic/common/op_macros.h"
#include "cityhash.h"

OP_BEGIN_DECLS

typedef uint64_t(*OPHash)(void* key, size_t size);

typedef void(*OPHashIterator)(void* key, void* value,
                              size_t keysize, size_t valsize,
                              void* context);

static inline
uint64_t OPDefaultHash(void* key, size_t size)
{
  return cityhash64((const uint8_t*)key, size);
}

typedef void(*OPFunnelUpsertCB)(void* key,
                                void* table_value,
                                void* funnel_value,
                                void* ctx,
                                size_t keysize, size_t valsize,
                                size_t ctxsize, bool is_duplicate);

typedef void(*OPFunnelGetCB)(void* key, void* value, void* ctx,
                             size_t keysize, size_t valsize,
                             size_t ctxsize);

typedef void(*OPFunnelDeleteCB)(void* key, void* value, void* ctx,
                                size_t keysize, size_t valsize,
                                size_t ctxsize);

#ifndef DOXYGEN_SKIP

typedef union FunnelCB
{
  OPFunnelUpsertCB upsertcb;
  OPFunnelGetCB getcb;
  OPFunnelDeleteCB deletecb;
} FunnelCB __attribute__((__transparent_union__));

#endif

OP_END_DECLS

#endif
/* op_hash.h ends here */