mirror of https://gitee.com/bigwinds/arangodb
91 lines
3.0 KiB
C++
91 lines
3.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2014-2016 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
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef ARANGOD_VOC_BASE_MASTER_POINTERS_H
|
|
#define ARANGOD_VOC_BASE_MASTER_POINTERS_H 1
|
|
|
|
#include "Basics/Common.h"
|
|
|
|
struct TRI_doc_mptr_t;
|
|
|
|
namespace arangodb {
|
|
|
|
class MasterPointers {
|
|
MasterPointers(MasterPointers const&) = delete;
|
|
MasterPointers& operator=(MasterPointers const&) = delete;
|
|
|
|
public:
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
/// @brief creates the headers
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
MasterPointers();
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
/// @brief destroys the headers
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
~MasterPointers();
|
|
|
|
public:
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
/// @brief returns the number of allocated headers
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
uint64_t numAllocated() const { return _nrAllocated; }
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
/// @brief returns the memory usage
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
uint64_t memory() const;
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
/// @brief request a new header
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
TRI_doc_mptr_t* request();
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
/// @brief release/free an existing header, putting it back onto the freelist
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
void release(TRI_doc_mptr_t*);
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
/// @brief return the total size of linked headers
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
private:
|
|
|
|
TRI_doc_mptr_t* _freelist; // free headers
|
|
|
|
uint64_t _nrAllocated; // number of allocated headers
|
|
|
|
std::vector<TRI_doc_mptr_t*> _blocks;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|