jiigen666/libtorrent
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

improve torrent file ordering optimization

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

24
src/file_storage.cpp
View File

@@ -465,20 +465,26 @@ namespace libtorrent
if (pad_file_limit >= 0 && pad_file_limit < alignment) if (pad_file_limit >= 0 && pad_file_limit < alignment)
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; size_type off = 0;
int padding_file = 0; int padding_file = 0;
for (std::vector<internal_file_entry>::iterator i = m_files.begin(); for (std::vector<internal_file_entry>::iterator i = m_files.begin();
i != m_files.end(); ++i) 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 && (off & (alignment-1)) != 0
&& i->size > pad_file_limit && i->size > pad_file_limit
&& i->pad_file == false) && i->pad_file == false)