82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
/*
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* Copyright (C) 2016 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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#ifndef Object_h
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#define Object_h
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#include <cstddef>
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namespace bmalloc {
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class Chunk;
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class SmallLine;
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class SmallPage;
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class Object {
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public:
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Object(void*);
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Object(Chunk*, void*);
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Object(Chunk* chunk, size_t offset)
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: m_chunk(chunk)
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, m_offset(offset)
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{
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}
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Chunk* chunk() { return m_chunk; }
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size_t offset() { return m_offset; }
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char* address();
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SmallLine* line();
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SmallPage* page();
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Object operator+(size_t);
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Object operator-(size_t);
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bool operator<=(const Object&);
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private:
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Chunk* m_chunk;
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size_t m_offset;
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};
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inline Object Object::operator+(size_t offset)
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{
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return Object(m_chunk, m_offset + offset);
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}
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inline Object Object::operator-(size_t offset)
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{
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return Object(m_chunk, m_offset - offset);
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}
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inline bool Object::operator<=(const Object& other)
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{
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BASSERT(m_chunk == other.m_chunk);
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return m_offset <= other.m_offset;
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}
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}; // namespace bmalloc
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#endif // Object_h
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