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558b914c64
* Rename unity files * Move some modules to new subdirectories * Remove obsolete Visual Studio project files * Remove obsolete coding style and TODO list
101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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ContentBodyBuffer::ContentBodyBuffer (size_type blocksize)
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: m_blocksize (blocksize)
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, m_size (0)
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{
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}
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ContentBodyBuffer::~ContentBodyBuffer ()
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{
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for (Handles::iterator iter (m_handles.begin());
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iter != m_handles.end(); ++iter)
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{
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void* const buffer (*iter);
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std::free (buffer);
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}
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}
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void ContentBodyBuffer::swapWith (ContentBodyBuffer& other)
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{
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std::swap (m_blocksize, other.m_blocksize);
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std::swap (m_size, other.m_size);
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m_handles.swap (other.m_handles);
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}
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void ContentBodyBuffer::commit (size_type n)
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{
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m_size += n;
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bassert (m_size <= m_handles.size () * m_blocksize);
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}
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ConstBuffers ContentBodyBuffer::data () const
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{
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size_type n (m_size);
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std::vector <ConstBuffer> v;
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v.reserve ((m_size + m_blocksize - 1) / m_blocksize);
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for (Handles::const_iterator iter (m_handles.begin());
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iter != m_handles.end() && n > 0; ++iter)
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{
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size_type const amount (std::min (n, m_blocksize));
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v.push_back (MutableBuffer (*iter, amount));
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n -= amount;
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}
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return ConstBuffers (v);
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}
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ContentBodyBuffer::size_type ContentBodyBuffer::size () const
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{
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return m_size;
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}
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MutableBuffers ContentBodyBuffer::prepare (size_type n)
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{
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reserve (n);
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std::vector <MutableBuffer> v;
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size_type offset (m_size % m_blocksize);
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for (Handles::iterator iter = m_handles.begin () + (m_size / m_blocksize);
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iter != m_handles.end () && n > 0; ++iter)
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{
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size_type const amount (std::min (n, m_blocksize - offset));
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v.push_back (MutableBuffer (*iter, amount));
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n -= amount;
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offset = 0;
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}
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return MutableBuffers (v);
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}
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void ContentBodyBuffer::reserve (size_type n)
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{
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size_type count ((m_size + n + m_blocksize - 1) / m_blocksize);
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if (count > m_handles.size ())
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for (count -= m_handles.size (); count-- > 0;)
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m_handles.push_back (std::malloc (m_blocksize));
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}
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void ContentBodyBuffer::shrink_to_fit ()
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{
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size_type const count ((m_size + m_blocksize - 1) / m_blocksize);
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while (m_handles.size () > count)
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{
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std::free (m_handles.back ());
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m_handles.erase (m_handles.end () - 1);
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}
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} |