1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
// wiredtiger_size_storer.h
/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <map>
#include <string>
#include <boost/thread/mutex.hpp>
#include "mongo/base/string_data.h"
namespace mongo {
class WiredTigerRecordStore;
class WiredTigerSession;
class WiredTigerSizeStorer {
public:
WiredTigerSizeStorer();
~WiredTigerSizeStorer();
void onCreate( WiredTigerRecordStore* rs, long long nr, long long ds );
void onDestroy( WiredTigerRecordStore* rs );
void store( StringData uri,
long long numRecords, long long dataSize );
void load( StringData uri,
long long* numRecords, long long* dataSize ) const;
void loadFrom( WiredTigerSession* cursor, const std::string& uri );
void storeInto( WiredTigerSession* cursor, const std::string& uri );
private:
void _checkMagic() const;
struct Entry {
Entry() : numRecords(0), dataSize(0), dirty(false), rs(NULL){}
long long numRecords;
long long dataSize;
bool dirty;
WiredTigerRecordStore* rs; // not owned
};
int _magic;
typedef std::map<std::string,Entry> Map;
Map _entries;
mutable boost::mutex _entriesMutex;
};
}
|