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Diffstat (limited to 'JavaScriptCore/wtf/PageBlock.h')
-rw-r--r-- | JavaScriptCore/wtf/PageBlock.h | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/JavaScriptCore/wtf/PageBlock.h b/JavaScriptCore/wtf/PageBlock.h deleted file mode 100644 index 07452b3..0000000 --- a/JavaScriptCore/wtf/PageBlock.h +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright (C) 2010 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. - */ - -#ifndef PageBlock_h -#define PageBlock_h - -namespace WTF { - -size_t pageSize(); -inline bool isPageAligned(void* address) { return !(reinterpret_cast<intptr_t>(address) & (pageSize() - 1)); } -inline bool isPageAligned(size_t size) { return !(size & (pageSize() - 1)); } -inline bool isPowerOfTwo(size_t size) { return !(size & (size - 1)); } - -class PageBlock { -public: - PageBlock(); - PageBlock(const PageBlock&); - PageBlock(void*, size_t); - - void* base() const { return m_base; } - size_t size() const { return m_size; } - - operator bool() const { return !!m_base; } - - bool contains(void* containedBase, size_t containedSize) - { - return containedBase >= m_base - && (static_cast<char*>(containedBase) + containedSize) <= (static_cast<char*>(m_base) + m_size); - } - -private: - void* m_base; - size_t m_size; -}; - -inline PageBlock::PageBlock() - : m_base(0) - , m_size(0) -{ -} - -inline PageBlock::PageBlock(const PageBlock& other) - : m_base(other.m_base) - , m_size(other.m_size) -{ -} - -inline PageBlock::PageBlock(void* base, size_t size) - : m_base(base) - , m_size(size) -{ -} - -} // namespace WTF - -using WTF::pageSize; -using WTF::isPageAligned; -using WTF::isPageAligned; -using WTF::isPowerOfTwo; - -#endif // PageBlock_h |