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arangodb/lib/Basics/PerformanceLogScope.h

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Jan Steemann
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGODB_BASICS_PERFORMANCE_LOG_SCOPE_H
#define ARANGODB_BASICS_PERFORMANCE_LOG_SCOPE_H 1
#include "Basics/Common.h"
#include "Logger/Logger.h"
namespace arangodb {
class PerformanceLogScope {
public:
PerformanceLogScope(PerformanceLogScope const&) = delete;
PerformanceLogScope& operator=(PerformanceLogScope const&) = delete;
explicit PerformanceLogScope(std::string const& message, double minElapsedTime = 0.0)
: _message(message), _start(TRI_microtime()), _minElapsedTime(minElapsedTime) {
LOG_TOPIC("f2a96", TRACE, Logger::PERFORMANCE) << _message;
}
~PerformanceLogScope() {
double const elapsed = TRI_microtime() - _start;
if (elapsed >= _minElapsedTime) {
LOG_TOPIC("4ada1", TRACE, Logger::PERFORMANCE)
<< "[timer] " << Logger::FIXED(elapsed) << " s, " << _message;
}
}
private:
std::string const _message;
double const _start;
double const _minElapsedTime;
};
} // namespace arangodb
#endif