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Pull ref_counter out of btree.h

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This commit is contained in:
Joe Thornber 2013-03-13 12:58:05 +00:00
parent 7d18b08b91
commit 11a41c4cf4
2 changed files with 44 additions and 7 deletions
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8
persistent-data/data-structures/btree.h
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@ -21,6 +21,7 @@
#include "persistent-data/endian_utils.h" #include "persistent-data/endian_utils.h"
#include "persistent-data/transaction_manager.h" #include "persistent-data/transaction_manager.h"
#include "persistent-data/data-structures/ref_counter.h"
#include <boost/noncopyable.hpp> #include <boost/noncopyable.hpp>
#include <boost/optional.hpp> #include <boost/optional.hpp>
@ -29,13 +30,6 @@
//---------------------------------------------------------------- //----------------------------------------------------------------
namespace persistent_data { namespace persistent_data {
template <typename ValueType>
class no_op_ref_counter {
public:
void inc(ValueType const &v) {}
void dec(ValueType const &v) {}
};
struct uint64_traits { struct uint64_traits {
typedef base::__le64 disk_type; typedef base::__le64 disk_type;
typedef uint64_t value_type; typedef uint64_t value_type;

43
persistent-data/data-structures/ref_counter.h Normal file
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@ -0,0 +1,43 @@
// Copyright (C) 2013 Red Hat, Inc. All rights reserved.
//
// This file is part of the thin-provisioning-tools source.
//
// thin-provisioning-tools is free software: you can redistribute it
// and/or modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// thin-provisioning-tools 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with thin-provisioning-tools. If not, see
// <http://www.gnu.org/licenses/>.
#ifndef REF_COUNTER_H
#define REF_COUNTER_H
//----------------------------------------------------------------
namespace persistent_data {
template <typename ValueType>
class ref_counter {
public:
boost::shared_ptr<ref_counter<ValueType> > ptr;
virtual ~ref_counter() {}
virtual void set(ValueType const &v, uint32_t rc) {}
virtual void inc(ValueType const &v) {}
virtual void dec(ValueType const &v) {}
};
template <typename ValueType>
class no_op_ref_counter : public ref_counter<ValueType> {
};
}
//----------------------------------------------------------------
#endif