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premiere-libtorrent
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improve torrent file ordering optimization

This commit is contained in:
Arvid Norberg 2011-03-22 02:27:54 +00:00
parent d3f0875ed5
commit 283b34c439
1 changed files with 15 additions and 9 deletions
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24
src/file_storage.cpp
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@ -465,20 +465,26 @@ namespace libtorrent
if (pad_file_limit >= 0 && pad_file_limit < alignment)
pad_file_limit = alignment;
// put the largest file at the front, to make sure
// it's aligned
std::vector<internal_file_entry>::iterator i = std::max_element(m_files.begin(), m_files.end()
, &compare_file_entry_size);
int index = file_index(*i);
reorder_file(index, 0);
size_type off = 0;
int padding_file = 0;
for (std::vector<internal_file_entry>::iterator i = m_files.begin();
i != m_files.end(); ++i)
{
if (pad_file_limit >= 0
if ((off & (alignment-1)) == 0)
{
// this file position is aligned, pick the largest
// available file to put here
std::vector<internal_file_entry>::iterator best_match
= std::max_element(i, m_files.end()
, &compare_file_entry_size);
if (best_match != i)
{
int index = file_index(*best_match);
reorder_file(index, file_index(*i));
}
}
else if (pad_file_limit >= 0
&& (off & (alignment-1)) != 0
&& i->size > pad_file_limit
&& i->pad_file == false)