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91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_CORE_LOADEVENT_H_INCLUDED
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#define RIPPLE_CORE_LOADEVENT_H_INCLUDED
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#include <chrono>
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#include <memory>
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#include <string>
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namespace ripple {
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class LoadMonitor;
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// VFALCO NOTE What is the difference between a LoadEvent and a LoadMonitor?
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// VFALCO TODO Rename LoadEvent to ScopedLoadSample
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//
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// This looks like a scoped elapsed time measuring class
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//
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class LoadEvent
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{
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public:
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// VFALCO TODO remove the dependency on LoadMonitor. Is that possible?
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LoadEvent(LoadMonitor& monitor, std::string const& name, bool shouldStart);
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LoadEvent(LoadEvent const&) = delete;
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~LoadEvent();
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std::string const&
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name() const;
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// The time spent waiting.
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std::chrono::steady_clock::duration
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waitTime() const;
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// The time spent running.
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std::chrono::steady_clock::duration
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runTime() const;
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void
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setName(std::string const& name);
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// Start the measurement. If already started, then
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// restart, assigning the elapsed time to the "waiting"
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// state.
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void
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start();
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// Stop the measurement and report the results. The
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// time reported is measured from the last call to
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// start.
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void
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stop();
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private:
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LoadMonitor& monitor_;
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// Represents our current state
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bool running_;
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// The name associated with this event, if any.
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std::string name_;
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// Represents the time we last transitioned states
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std::chrono::steady_clock::time_point mark_;
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// The time we spent waiting and running respectively
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std::chrono::steady_clock::duration timeWaiting_;
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std::chrono::steady_clock::duration timeRunning_;
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};
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} // namespace ripple
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#endif
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