/* * Copyright (C) 2017 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include "ConstraintVolatility.h" #include "VisitingTimeout.h" #include #include #include #include #include namespace JSC { class MarkingConstraintSet; class SlotVisitor; class MarkingConstraint { WTF_MAKE_NONCOPYABLE(MarkingConstraint); WTF_MAKE_FAST_ALLOCATED; public: JS_EXPORT_PRIVATE MarkingConstraint( CString abbreviatedName, CString name, ::Function, ConstraintVolatility); JS_EXPORT_PRIVATE MarkingConstraint( CString abbreviatedName, CString name, ::Function, ::Function, ConstraintVolatility); JS_EXPORT_PRIVATE ~MarkingConstraint(); unsigned index() const { return m_index; } const char* abbreviatedName() const { return m_abbreviatedName.data(); } const char* name() const { return m_name.data(); } void resetStats(); size_t lastVisitCount() const { return m_lastVisitCount; } void execute(SlotVisitor&, bool& didVisitSomething, MonotonicTime timeout); double quickWorkEstimate(SlotVisitor& visitor) { if (!m_quickWorkEstimateFunction) return 0; return m_quickWorkEstimateFunction(visitor); } double workEstimate(SlotVisitor& visitor) { return lastVisitCount() + quickWorkEstimate(visitor); } ConstraintVolatility volatility() const { return m_volatility; } private: friend class MarkingConstraintSet; // So it can set m_index. unsigned m_index { UINT_MAX }; CString m_abbreviatedName; CString m_name; ::Function m_executeFunction; ::Function m_quickWorkEstimateFunction; ConstraintVolatility m_volatility; size_t m_lastVisitCount { 0 }; }; } // namespace JSC