mirror of https://gitee.com/bigwinds/arangodb
159 lines
7.0 KiB
C
159 lines
7.0 KiB
C
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief multi-hash array implementation, using a linked-list for collisions
|
|
///
|
|
/// @file
|
|
///
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
|
|
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
|
|
///
|
|
/// 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.
|
|
///
|
|
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
|
|
///
|
|
/// @author Dr. Frank Celler
|
|
/// @author Dr. Oreste Costa-Panaia
|
|
/// @author Martin Schoenert
|
|
/// @author Jan Steemann
|
|
/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
|
|
/// @author Copyright 2006-2013, triAGENS GmbH, Cologne, Germany
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef ARANGODB_HASH_INDEX_HASH__ARRAY_MULTI_H
|
|
#define ARANGODB_HASH_INDEX_HASH__ARRAY_MULTI_H 1
|
|
|
|
#include "Basics/Common.h"
|
|
#include "Basics/vector.h"
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- forward declarations
|
|
// -----------------------------------------------------------------------------
|
|
|
|
struct TRI_hash_index_element_overflow_s;
|
|
struct TRI_hash_index_element_multi_s;
|
|
struct TRI_index_search_value_s;
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- public types
|
|
// -----------------------------------------------------------------------------
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief associative array
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
typedef struct TRI_hash_array_multi_s {
|
|
size_t _numFields; // the number of fields indexes
|
|
|
|
uint64_t _nrAlloc; // the size of the table
|
|
uint64_t _nrUsed; // the number of used entries
|
|
uint64_t _nrOverflowUsed; // the number of overflow entries used
|
|
uint64_t _nrOverflowAlloc; // the number of overflow entries allocated
|
|
|
|
struct TRI_hash_index_element_multi_s* _table; // the table itself, aligned to a cache line boundary
|
|
struct TRI_hash_index_element_multi_s* _tablePtr; // the table itself
|
|
|
|
struct TRI_hash_index_element_multi_s* _freelist;
|
|
|
|
TRI_vector_pointer_t _blocks;
|
|
}
|
|
TRI_hash_array_multi_t;
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- HASH ARRAY
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- constructors and destructors
|
|
// -----------------------------------------------------------------------------
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief initialises an array
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
int TRI_InitHashArrayMulti (TRI_hash_array_multi_t*,
|
|
size_t);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief destroys an array, but does not free the pointer
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void TRI_DestroyHashArrayMulti (TRI_hash_array_multi_t*);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief destroys an array and frees the pointer
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void TRI_FreeHashArrayMulti (TRI_hash_array_multi_t*);
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- public functions
|
|
// -----------------------------------------------------------------------------
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief get the hash array's memory usage
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
size_t TRI_MemoryUsageHashArrayMulti (TRI_hash_array_multi_t const*);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief resizes the hash table
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
int TRI_ResizeHashArrayMulti (TRI_hash_array_multi_t*,
|
|
size_t);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief lookups an element given a key
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TRI_vector_pointer_t TRI_LookupByKeyHashArrayMulti (TRI_hash_array_multi_t const*,
|
|
struct TRI_index_search_value_s const*);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief lookups an element given a key and a state
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
TRI_vector_pointer_t TRI_LookupByKeyHashArrayMulti (TRI_hash_array_multi_t const*,
|
|
struct TRI_index_search_value_s const*,
|
|
struct TRI_hash_index_element_multi_s*&,
|
|
size_t);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief adds an element to the array
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
int TRI_InsertElementHashArrayMulti (TRI_hash_array_multi_t*,
|
|
struct TRI_index_search_value_s const*,
|
|
struct TRI_hash_index_element_multi_s*,
|
|
bool);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief removes an element from the array
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
int TRI_RemoveElementHashArrayMulti (TRI_hash_array_multi_t*,
|
|
struct TRI_index_search_value_s const*,
|
|
struct TRI_hash_index_element_multi_s*);
|
|
|
|
#endif
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- END-OF-FILE
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Local Variables:
|
|
// mode: outline-minor
|
|
// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
|
|
// End:
|