82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/*
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* Copyright (C) 2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <wtf/TimingScope.h>
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#include <wtf/HashMap.h>
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#include <wtf/Lock.h>
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namespace WTF {
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namespace {
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class State {
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WTF_MAKE_NONCOPYABLE(State);
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WTF_MAKE_FAST_ALLOCATED;
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public:
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struct CallData {
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Seconds totalDuration;
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unsigned callCount { 0 };
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Seconds maxDuration;
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Seconds meanDuration() const { return totalDuration / callCount; }
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};
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State() = default;
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const CallData& addToTotal(const char* name, Seconds duration)
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{
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Locker locker { lock };
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auto& result = totals.add(name, CallData()).iterator->value;
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++result.callCount;
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result.maxDuration = std::max(result.maxDuration, duration);
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result.totalDuration += duration;
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return result;
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}
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private:
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HashMap<const char*, CallData> totals WTF_GUARDED_BY_LOCK(lock);
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Lock lock;
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};
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State& state()
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{
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static Atomic<State*> s_state;
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return ensurePointer(s_state, [] { return new State(); });
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}
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} // anonymous namespace
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void TimingScope::scopeDidEnd()
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{
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const auto& data = state().addToTotal(m_name, MonotonicTime::now() - m_startTime);
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if (!(data.callCount % m_logIterationInterval))
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WTFLogAlways("%s: %u calls, mean duration: %.6fms, total duration: %.6fms, max duration %.6fms", m_name, data.callCount, data.meanDuration().milliseconds(), data.totalDuration.milliseconds(), data.maxDuration.milliseconds());
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}
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} // namespace WebCore
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