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// lockstat.h
/**
* Copyright (C) 2008 10gen 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 "mongo/platform/atomic_word.h"
#include "mongo/util/timer.h"
namespace mongo {
class BSONObj;
class LockStat {
enum { N = 4 };
public:
void recordAcquireTimeMicros( char type , long long micros );
void recordLockTimeMicros( char type , long long micros );
void reset();
BSONObj report() const;
void report( StringBuilder& builder ) const;
long long getTimeLocked( char type ) const { return timeLocked[mapNo(type)].load(); }
private:
static void _append( BSONObjBuilder& builder, const AtomicInt64* data );
// RWrw
// in micros
AtomicInt64 timeAcquiring[N];
AtomicInt64 timeLocked[N];
static unsigned mapNo(char type);
static char nameFor(unsigned offset);
};
}
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