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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/>.
*/
#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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