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51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
// @file rs_optime.h
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/*
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* Copyright (C) 2010 10gen Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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namespace mongo {
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const string rsoplog = "local.oplog.rs";
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struct RSOpTime {
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unsigned long long ord;
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RSOpTime() : ord(0) { }
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bool initiated() const { return ord > 0; }
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void initiate() {
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assert( !initiated() );
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ord = 1000000;
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}
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ReplTime inc() {
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DEV assertInWriteLock();
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return ++ord;
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}
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string toString() const { return str::stream() << ord; }
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/* query the oplog and set the highest value herein. acquires a db read lock. throws. */
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void load();
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};
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extern RSOpTime rsOpTime;
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}
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