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67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
// service_stats.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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#ifndef DB_STATS_SERVICE_STATS_HEADER
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#define DB_STATS_SERVICE_STATS_HEADER
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#include <string>
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#include "../../util/concurrency/spin_lock.h"
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namespace mongo {
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using std::string;
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class Histogram;
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/**
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* ServiceStats keeps track of the time a request/response message
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* took inside a service as well as the size of the response
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* generated.
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*/
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class ServiceStats {
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public:
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ServiceStats();
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~ServiceStats();
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/**
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* Record the 'duration' in microseconds a request/response
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* message took and the size in bytes of the generated
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* response.
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*/
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void logResponse( uint64_t duration, uint64_t bytes );
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/**
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* Render the histogram as string that can be used inside an
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* HTML doc.
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*/
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string toHTML() const;
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private:
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SpinLock _spinLock; // protects state below
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Histogram* _timeHistogram;
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Histogram* _spaceHistogram;
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ServiceStats( const ServiceStats& );
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ServiceStats operator=( const ServiceStats& );
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};
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} // namespace mongo
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#endif // DB_STATS_SERVICE_STATS_HEADER
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