mirror of https://gitee.com/bigwinds/arangodb
168 lines
7.0 KiB
C
168 lines
7.0 KiB
C
////////////////////////////////////////////////////////////////////////////////
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/// @brief associative multi array implementation
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2011 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Martin Schoenert
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/// @author Copyright 2006-2011, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_PHILADELPHIA_BASICS_ASSOCIATIVE_MULTI_H
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#define TRIAGENS_PHILADELPHIA_BASICS_ASSOCIATIVE_MULTI_H 1
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#include <Basics/Common.h>
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#include <Basics/locks.h>
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#include <Basics/vector.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- public types
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Collections
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief associative multi array of pointers
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_multi_pointer_s {
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uint64_t (*hashKey) (struct TRI_multi_pointer_s*, void const*);
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uint64_t (*hashElement) (struct TRI_multi_pointer_s*, void const*);
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bool (*isEqualKeyElement) (struct TRI_multi_pointer_s*, void const*, void const*);
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bool (*isEqualElementElement) (struct TRI_multi_pointer_s*, void const*, void const*);
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uint64_t _nrAlloc; // the size of the table
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uint64_t _nrUsed; // the number of used entries
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void** _table; // the table itself
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uint64_t _nrFinds; // statistics: number of lookup calls
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uint64_t _nrAdds; // statistics: number of insert calls
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uint64_t _nrRems; // statistics: number of remove calls
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uint64_t _nrResizes; // statistics: number of resizes
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uint64_t _nrProbesF; // statistics: number of misses while looking up
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uint64_t _nrProbesA; // statistics: number of misses while inserting
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uint64_t _nrProbesD; // statistics: number of misses while removing
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uint64_t _nrProbesR; // statistics: number of misses while adding
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}
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TRI_multi_pointer_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- MULTI ASSOCIATIVE POINTERS
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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// --SECTION-- constructors and destructors
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Collections
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief initialises an array
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////////////////////////////////////////////////////////////////////////////////
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void TRI_InitMultiPointer (TRI_multi_pointer_t* array,
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uint64_t (*hashKey) (TRI_multi_pointer_t*, void const*),
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uint64_t (*hashElement) (TRI_multi_pointer_t*, void const*),
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bool (*isEqualKeyElement) (TRI_multi_pointer_t*, void const*, void const*),
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bool (*isEqualElementElement) (TRI_multi_pointer_t*, void const*, void const*));
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys an array, but does not free the pointer
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////////////////////////////////////////////////////////////////////////////////
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void TRI_DestroyMultiPointer (TRI_multi_pointer_t*);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys an array and frees the pointer
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////////////////////////////////////////////////////////////////////////////////
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void TRI_FreeMultiPointer (TRI_multi_pointer_t*);
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Collections
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief lookups an element given a key
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////////////////////////////////////////////////////////////////////////////////
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TRI_vector_pointer_t TRI_LookupByKeyMultiPointer (TRI_multi_pointer_t*, void const* key);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief lookups an element given an element
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////////////////////////////////////////////////////////////////////////////////
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void* TRI_LookupByElementMultiPointer (TRI_multi_pointer_t*, void const* element);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief adds an key/element to the array
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////////////////////////////////////////////////////////////////////////////////
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void* TRI_InsertElementMultiPointer (TRI_multi_pointer_t*, void* element, bool overwrite);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief removes an element from the array
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////////////////////////////////////////////////////////////////////////////////
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void* TRI_RemoveElementMultiPointer (TRI_multi_pointer_t*, void const* element);
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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#ifdef __cplusplus
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}
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#endif
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#endif
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// @addtogroup\\|// --SECTION--\\)"
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// End:
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