mirror of https://gitee.com/bigwinds/arangodb
103 lines
2.5 KiB
C++
103 lines
2.5 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 Jan Steemann
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef ARANGOD_VOCBASE_COMPACTION_LOCKER_H
|
|
#define ARANGOD_VOCBASE_COMPACTION_LOCKER_H 1
|
|
|
|
#include "Basics/Common.h"
|
|
#include "VocBase/LogicalCollection.h"
|
|
|
|
namespace arangodb {
|
|
|
|
class CompactionPreventer {
|
|
public:
|
|
explicit CompactionPreventer(LogicalCollection* collection)
|
|
: _collection(collection) {
|
|
_collection->preventCompaction();
|
|
}
|
|
|
|
~CompactionPreventer() { _collection->allowCompaction(); }
|
|
|
|
private:
|
|
LogicalCollection* _collection;
|
|
};
|
|
|
|
class TryCompactionPreventer {
|
|
public:
|
|
explicit TryCompactionPreventer(LogicalCollection* collection)
|
|
: _collection(collection), _isLocked(false) {
|
|
_isLocked = _collection->tryPreventCompaction();
|
|
}
|
|
|
|
~TryCompactionPreventer() {
|
|
if (_isLocked) {
|
|
_collection->allowCompaction();
|
|
}
|
|
}
|
|
|
|
bool isLocked() const { return _isLocked; }
|
|
|
|
private:
|
|
LogicalCollection* _collection;
|
|
bool _isLocked;
|
|
};
|
|
|
|
class CompactionLocker {
|
|
public:
|
|
explicit CompactionLocker(LogicalCollection* collection)
|
|
: _collection(collection) {
|
|
_collection->lockForCompaction();
|
|
}
|
|
|
|
~CompactionLocker() {
|
|
_collection->finishCompaction();
|
|
}
|
|
|
|
private:
|
|
LogicalCollection* _collection;
|
|
};
|
|
|
|
class TryCompactionLocker {
|
|
public:
|
|
explicit TryCompactionLocker(LogicalCollection* collection)
|
|
: _collection(collection), _isLocked(false) {
|
|
_isLocked = _collection->tryLockForCompaction();
|
|
}
|
|
|
|
~TryCompactionLocker() {
|
|
if (_isLocked) {
|
|
_collection->finishCompaction();
|
|
}
|
|
}
|
|
|
|
bool isLocked() const { return _isLocked; }
|
|
|
|
private:
|
|
LogicalCollection* _collection;
|
|
bool _isLocked;
|
|
};
|
|
|
|
} // namespace arangodb
|
|
|
|
#endif
|