/* * Copyright (C) 2018 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. */ #pragma once #if ENABLE(JIT) #include "CodeLocation.h" #include <wtf/StdLibExtras.h> #include <wtf/Vector.h> namespace JSC { class JITCodeMap { private: struct Entry { Entry() { } Entry(unsigned bytecodeIndex, CodeLocationLabel<JSEntryPtrTag> codeLocation) : m_bytecodeIndex(bytecodeIndex) , m_codeLocation(codeLocation) { } inline unsigned bytecodeIndex() const { return m_bytecodeIndex; } inline CodeLocationLabel<JSEntryPtrTag> codeLocation() { return m_codeLocation; } private: unsigned m_bytecodeIndex; CodeLocationLabel<JSEntryPtrTag> m_codeLocation; }; public: void append(unsigned bytecodeIndex, CodeLocationLabel<JSEntryPtrTag> codeLocation) { m_entries.append({ bytecodeIndex, codeLocation }); } void finish() { m_entries.shrinkToFit(); } CodeLocationLabel<JSEntryPtrTag> find(unsigned bytecodeIndex) const { auto* entry = binarySearch<Entry, unsigned>(m_entries, m_entries.size(), bytecodeIndex, [] (Entry* entry) { return entry->bytecodeIndex(); }); if (!entry) return CodeLocationLabel<JSEntryPtrTag>(); return entry->codeLocation(); } explicit operator bool() const { return m_entries.size(); } private: Vector<Entry> m_entries; }; } // namespace JSC #endif // ENABLE(JIT)