92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
// -*- C++ -*-
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//
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// Copyright (C) 2024, Vaclav Haisman. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modifica-
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// tion, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
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// DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef LOG4CPLUS_HELPERS_EVENTCOUNTER_H
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#define LOG4CPLUS_HELPERS_EVENTCOUNTER_H
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#include <log4cplus/config.hxx>
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#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
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#pragma once
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#endif
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#include <log4cplus/thread/syncprims.h>
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#include <cstddef>
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#include <atomic>
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#include <chrono>
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namespace log4cplus {
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namespace helpers {
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class LOG4CPLUS_EXPORT BaseEventCounter
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{
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public:
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BaseEventCounter ();
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virtual ~BaseEventCounter ();
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virtual std::size_t record_event ();
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protected:
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std::atomic<std::size_t> event_count {0};
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};
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class LOG4CPLUS_EXPORT SteadyClockGate
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: public BaseEventCounter
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{
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public:
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using Clock = std::chrono::steady_clock;
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using Duration = Clock::duration;
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using TimePoint = std::chrono::time_point<Clock>;
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struct LOG4CPLUS_EXPORT Info
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{
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~Info ();
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std::size_t count;
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Duration time_span;
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};
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SteadyClockGate (SteadyClockGate::Duration pause_duraiton);
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virtual ~SteadyClockGate ();
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bool latch_open (Info &);
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private:
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log4cplus::thread::SimpleMutex mtx;
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Duration const pause_duration;
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TimePoint timeout_point;
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TimePoint prev_timeout_point;
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};
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} // namespace helpers
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} // namespace log4cplus
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#endif // LOG4CPLUS_HELPERS_EVENTCOUNTER_H
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