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// counters.h
/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/db/jsobj.h"
#include "mongo/platform/atomic_word.h"
#include "mongo/platform/basic.h"
#include "mongo/rpc/message.h"
#include "mongo/util/concurrency/spin_lock.h"
#include "mongo/util/processinfo.h"
#include "mongo/util/with_alignment.h"
namespace mongo {
/**
* for storing operation counters
* note: not thread safe. ok with that for speed
*/
class OpCounters {
public:
OpCounters() = default;
void gotInserts(int n) {
_checkWrap(&OpCounters::_insert, n);
}
void gotInsert() {
_checkWrap(&OpCounters::_insert, 1);
}
void gotQuery() {
_checkWrap(&OpCounters::_query, 1);
}
void gotUpdate() {
_checkWrap(&OpCounters::_update, 1);
}
void gotDelete() {
_checkWrap(&OpCounters::_delete, 1);
}
void gotGetMore() {
_checkWrap(&OpCounters::_getmore, 1);
}
void gotCommand() {
_checkWrap(&OpCounters::_command, 1);
}
void gotOp(int op, bool isCommand);
BSONObj getObj() const;
// thse are used by snmp, and other things, do not remove
const AtomicWord<long long>* getInsert() const {
return &_insert;
}
const AtomicWord<long long>* getQuery() const {
return &_query;
}
const AtomicWord<long long>* getUpdate() const {
return &_update;
}
const AtomicWord<long long>* getDelete() const {
return &_delete;
}
const AtomicWord<long long>* getGetMore() const {
return &_getmore;
}
const AtomicWord<long long>* getCommand() const {
return &_command;
}
private:
// Increment member `counter` by `n`, resetting all counters if it was > 2^60.
void _checkWrap(CacheAligned<AtomicWord<long long>> OpCounters::*counter, int n);
CacheAligned<AtomicWord<long long>> _insert;
CacheAligned<AtomicWord<long long>> _query;
CacheAligned<AtomicWord<long long>> _update;
CacheAligned<AtomicWord<long long>> _delete;
CacheAligned<AtomicWord<long long>> _getmore;
CacheAligned<AtomicWord<long long>> _command;
};
extern OpCounters globalOpCounters;
extern OpCounters replOpCounters;
class NetworkCounter {
public:
// Increment the counters for the number of bytes read directly off the wire
void hitPhysicalIn(long long bytes);
void hitPhysicalOut(long long bytes);
// Increment the counters for the number of bytes passed out of the TransportLayer to the
// server
void hitLogicalIn(long long bytes);
void hitLogicalOut(long long bytes);
void append(BSONObjBuilder& b);
private:
CacheAligned<AtomicWord<long long>> _physicalBytesIn{0};
CacheAligned<AtomicWord<long long>> _physicalBytesOut{0};
// These two counters are always incremented at the same time, so
// we place them on the same cache line.
struct Together {
AtomicWord<long long> logicalBytesIn{0};
AtomicWord<long long> requests{0};
};
CacheAligned<Together> _together{};
static_assert(sizeof(decltype(_together)) <= stdx::hardware_constructive_interference_size,
"cache line spill");
CacheAligned<AtomicWord<long long>> _logicalBytesOut{0};
};
extern NetworkCounter networkCounter;
}
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