LCOV - app.info - js/src/yarr/PageBlock.h

LCOV - code coverage report
| Current view: | directory - js/src/yarr - PageBlock.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 14 | 14 | 100.0 %
| Date: | 2012-04-07 | Functions: | 8 | 8 | 100.0 %

           1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
           2                 :  * vim: set ts=8 sw=4 et tw=99 ft=cpp:
           3                 :  *
           4                 :  * ***** BEGIN LICENSE BLOCK *****
           5                 :  * Copyright (C) 2010 Apple Inc. All rights reserved.
           6                 :  *
           7                 :  * Redistribution and use in source and binary forms, with or without
           8                 :  * modification, are permitted provided that the following conditions
           9                 :  * are met:
          10                 :  * 1. Redistributions of source code must retain the above copyright
          11                 :  *    notice, this list of conditions and the following disclaimer.
          12                 :  * 2. Redistributions in binary form must reproduce the above copyright
          13                 :  *    notice, this list of conditions and the following disclaimer in the
          14                 :  *    documentation and/or other materials provided with the distribution.
          15                 :  *
          16                 :  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
          17                 :  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
          18                 :  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
          19                 :  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
          20                 :  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
          21                 :  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
          22                 :  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
          23                 :  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
          24                 :  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
          25                 :  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
          26                 :  * THE POSSIBILITY OF SUCH DAMAGE.
          27                 :  *
          28                 :  * ***** END LICENSE BLOCK ***** */
          29                 :
          30                 : #ifndef PageBlock_h
          31                 : #define PageBlock_h
          32                 :
          33                 : #include "mozilla/StandardInteger.h"
          34                 :
          35                 : #include <stdlib.h>
          36                 : #include "assembler/wtf/Platform.h"
          37                 :
          38                 : namespace WTF {
          39                 :
          40                 : size_t pageSize();
          41                 : inline bool isPageAligned(void* address) { return !(reinterpret_cast<intptr_t>(address) & (pageSize() - 1)); }
          42           31104 : inline bool isPageAligned(size_t size) { return !(size & (pageSize() - 1)); }
          43           31104 : inline bool isPowerOfTwo(size_t size) { return !(size & (size - 1)); }
          44                 :
          45                 : class PageBlock {
          46                 : public:
          47                 :     PageBlock();
          48                 :     PageBlock(const PageBlock&);
          49                 :     PageBlock(void*, size_t);
          50                 :
          51          124416 :     void* base() const { return m_base; }
          52           93312 :     size_t size() const { return m_size; }
          53                 :
          54           93312 :     operator bool() const { return !!m_base; }
          55                 :
          56                 :     bool contains(void* containedBase, size_t containedSize)
          57                 :     {
          58                 :         return containedBase >= m_base
          59                 :             && (static_cast<char*>(containedBase) + containedSize) <= (static_cast<char*>(m_base) + m_size);
          60                 :     }
          61                 :
          62                 : private:
          63                 :     void* m_base;
          64                 :     size_t m_size;
          65                 : };
          66                 :
          67           31104 : inline PageBlock::PageBlock()
          68                 :     : m_base(0)
          69           31104 :     , m_size(0)
          70                 : {
          71           31104 : }
          72                 :
          73           62208 : inline PageBlock::PageBlock(const PageBlock& other)
          74                 :     : m_base(other.m_base)
          75           62208 :     , m_size(other.m_size)
          76                 : {
          77           62208 : }
          78                 :
          79           31104 : inline PageBlock::PageBlock(void* base, size_t size)
          80                 :     : m_base(base)
          81           31104 :     , m_size(size)
          82                 : {
          83           31104 : }
          84                 :
          85                 : } // namespace WTF
          86                 :
          87                 : using WTF::pageSize;
          88                 : using WTF::isPageAligned;
          89                 : using WTF::isPageAligned;
          90                 : using WTF::isPowerOfTwo;
          91                 :
          92                 : #endif // PageBlock_h

Generated by: LCOV version 1.7