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optimization for kick-starting sockets to download again after having been blocked by the disk

This commit is contained in:
Arvid Norberg 2011-03-20 07:43:57 +00:00
parent c1620de8d8
commit 54435a73b8
1 changed files with 11 additions and 3 deletions
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14
src/session_impl.cpp
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@ -2457,12 +2457,20 @@ namespace aux {
conns.push_back(p);
}
for (std::vector<peer_connection*>::iterator i = conns.begin()
, end(conns.end()); i != end; ++i)
// pick a random peer to start with, to evenly distribute
// the disk bandwidth
std::vector<peer_connection*>::iterator peer = conns.begin() + (rand() % conns.size());
for (int i = 0; i < conns.size(); ++i)
{
// if we can't write to disk anymore, no need
// to keep iterating
if (!can_write_to_disk()) break;
// setup_receive() may disconnect the connection
// and clear it out from the m_connections list
(*i)->on_disk();
(*peer)->on_disk();
++peer;
if (peer == conns.end()) peer = conns.begin();
}
}