1/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
3#ident "$Id$"
4/*======
5This file is part of PerconaFT.
6
7
8Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
9
10 PerconaFT is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License, version 2,
12 as published by the Free Software Foundation.
13
14 PerconaFT is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
21
22----------------------------------------
23
24 PerconaFT is free software: you can redistribute it and/or modify
25 it under the terms of the GNU Affero General Public License, version 3,
26 as published by the Free Software Foundation.
27
28 PerconaFT is distributed in the hope that it will be useful,
29 but WITHOUT ANY WARRANTY; without even the implied warranty of
30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31 GNU Affero General Public License for more details.
32
33 You should have received a copy of the GNU Affero General Public License
34 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
35======= */
36
37#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
38
39#pragma once
40
41#include "ft/txn/txn.h"
42
43#include "util/omt.h"
44
45namespace toku {
46
47class txnid_set {
48public:
49 // effect: Creates an empty set. Does not malloc space for
50 // any entries yet. That is done lazily on add().
51 void create(void);
52
53 // effect: Destroy the set's internals.
54 void destroy(void);
55
56 // returns: True if the given txnid is a member of the set.
57 bool contains(TXNID id) const;
58
59 // effect: Adds a given txnid to the set if it did not exist
60 void add(TXNID txnid);
61
62 // effect: Deletes a txnid from the set if it exists.
63 void remove(TXNID txnid);
64
65 // returns: Size of the set
66 size_t size(void) const;
67
68 // returns: The "i'th" id in the set, as if it were sorted.
69 TXNID get(size_t i) const;
70
71private:
72 toku::omt<TXNID> m_txnids;
73
74 friend class txnid_set_unit_test;
75};
76ENSURE_POD(txnid_set);
77
78} /* namespace toku */
79