/* * Copyright (C) 2013 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. ``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 * 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. */ #ifndef DFGOSRExitBase_h #define DFGOSRExitBase_h #if ENABLE(DFG_JIT) #include "CodeOrigin.h" #include "DFGExitProfile.h" namespace JSC { namespace DFG { struct BasicBlock; struct Node; // Provides for the OSR exit profiling functionality that is common between the DFG // and the FTL. struct OSRExitBase { OSRExitBase(ExitKind kind, CodeOrigin origin, CodeOrigin originForProfile) : m_kind(kind) , m_count(0) , m_codeOrigin(origin) , m_codeOriginForExitProfile(originForProfile) { ASSERT(m_codeOrigin.isSet()); ASSERT(m_codeOriginForExitProfile.isSet()); } ExitKind m_kind; uint32_t m_count; CodeOrigin m_codeOrigin; CodeOrigin m_codeOriginForExitProfile; protected: bool considerAddingAsFrequentExitSite(CodeBlock* profiledCodeBlock, ExitingJITType jitType) { if (!m_count) return false; return considerAddingAsFrequentExitSiteSlow(profiledCodeBlock, jitType); } private: bool considerAddingAsFrequentExitSiteSlow(CodeBlock* profiledCodeBlock, ExitingJITType); }; } } // namespace JSC::DFG #endif // ENABLE(DFG_JIT) #endif // DFGOSRExitBase_h