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