102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/*
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Copyright (c) 2012-2016, Arvid Norberg, Daniel Wallin
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All rights reserved.
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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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* 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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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "libtorrent/stat_cache.hpp"
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#include "libtorrent/assert.hpp"
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namespace libtorrent
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{
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stat_cache::stat_cache() {}
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stat_cache::~stat_cache() {}
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// TODO: 4 improve this interface by fall back to the actual stat() call internally. Don't
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// expose low-level functions to query the cache and set cache state. Also, we should
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// probably cache the error_code too
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void stat_cache::set_cache(int i, boost::int64_t size, time_t time)
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{
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TORRENT_ASSERT(i >= 0);
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if (i >= int(m_stat_cache.size()))
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m_stat_cache.resize(i + 1, not_in_cache);
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m_stat_cache[i].file_size = size;
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m_stat_cache[i].file_time = time;
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}
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void stat_cache::set_dirty(int i)
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{
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TORRENT_ASSERT(i >= 0);
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if (i >= int(m_stat_cache.size())) return;
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m_stat_cache[i].file_size = not_in_cache;
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}
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void stat_cache::set_noexist(int i)
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{
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TORRENT_ASSERT(i >= 0);
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if (i >= int(m_stat_cache.size()))
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m_stat_cache.resize(i + 1, not_in_cache);
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m_stat_cache[i].file_size = no_exist;
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}
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void stat_cache::set_error(int i)
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{
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TORRENT_ASSERT(i >= 0);
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if (i >= int(m_stat_cache.size()))
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m_stat_cache.resize(i + 1, not_in_cache);
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m_stat_cache[i].file_size = cache_error;
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}
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boost::int64_t stat_cache::get_filesize(int i) const
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{
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if (i >= int(m_stat_cache.size())) return not_in_cache;
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return m_stat_cache[i].file_size;
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}
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// TODO: 4 file_time can probably be removed from the cache now
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time_t stat_cache::get_filetime(int i) const
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{
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if (i >= int(m_stat_cache.size())) return not_in_cache;
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if (m_stat_cache[i].file_size < 0) return m_stat_cache[i].file_size;
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return m_stat_cache[i].file_time;
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}
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void stat_cache::init(int num_files)
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{
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m_stat_cache.resize(num_files, not_in_cache);
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}
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void stat_cache::clear()
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{
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std::vector<stat_cache_t>().swap(m_stat_cache);
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}
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}
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