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bandwidth limiter mutex fix

This commit is contained in:
Arvid Norberg 2008-01-10 06:19:20 +00:00
parent c047c4dd71
commit 9fca960d3c
1 changed files with 18 additions and 10 deletions
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28
include/libtorrent/bandwidth_manager.hpp
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@ -124,6 +124,12 @@ struct bandwidth_manager
bool is_queued(PeerConnection const* peer) const
{
mutex_t::scoped_lock l(m_mutex);
return is_queued(peer);
}
bool is_queued(PeerConnection const* peer, boost::mutex::scoped_lock& l) const
{
TORRENT_ASSERT(l.locked());
for (typename queue_t::const_iterator i = m_queue.begin()
, end(m_queue.end()); i != end; ++i)
{
@ -135,6 +141,12 @@ struct bandwidth_manager
bool is_in_history(PeerConnection const* peer) const
{
mutex_t::scoped_lock l(m_mutex);
return is_in_history(peer, l);
}
bool is_in_history(PeerConnection const* peer, boost::mutex::scoped_lock& l) const
{
TORRENT_ASSERT(l.locked());
for (typename history_t::const_iterator i
= m_history.begin(), end(m_history.end()); i != end; ++i)
{
@ -152,11 +164,11 @@ struct bandwidth_manager
, int blk
, bool non_prioritized) throw()
{
mutex_t::scoped_lock l(m_mutex);
INVARIANT_CHECK;
TORRENT_ASSERT(blk > 0);
TORRENT_ASSERT(!is_queued(peer.get()));
TORRENT_ASSERT(!is_queued(peer.get(), l));
mutex_t::scoped_lock l(m_mutex);
TORRENT_ASSERT(!peer->ignore_bandwidth_limits());
// make sure this peer isn't already in line
@ -226,13 +238,12 @@ private:
void on_history_expire(asio::error_code const& e) throw()
{
INVARIANT_CHECK;
if (e) return;
mutex_t::scoped_lock l(m_mutex);
INVARIANT_CHECK;
TORRENT_ASSERT(!m_history.empty());
mutex_t::scoped_lock l(m_mutex);
ptime now(time_now());
while (!m_history.empty() && m_history.back().expires_at <= now)
{
@ -264,6 +275,7 @@ private:
void hand_out_bandwidth(boost::mutex::scoped_lock& l)
{
TORRENT_ASSERT(l.locked());
// if we're already handing out bandwidth, just return back
// to the loop further down on the callstack
if (m_in_hand_out_bandwidth) return;
@ -296,7 +308,6 @@ private:
m_queue.swap(q);
while (!q.empty() && amount > 0)
{
TORRENT_ASSERT(amount == limit - m_current_quota);
bw_queue_entry<PeerConnection> qe = q.front();
TORRENT_ASSERT(qe.max_block_size > 0);
q.pop_front();
@ -308,7 +319,6 @@ private:
l.unlock();
t->expire_bandwidth(m_channel, qe.max_block_size);
l.lock();
amount = limit - m_current_quota;
continue;
}
@ -318,7 +328,7 @@ private:
int max_assignable = qe.peer->max_assignable_bandwidth(m_channel);
if (max_assignable == 0)
{
TORRENT_ASSERT(is_in_history(qe.peer.get()));
TORRENT_ASSERT(is_in_history(qe.peer.get(), l));
tmp.push_back(qe);
continue;
}
@ -374,7 +384,6 @@ private:
int hand_out_amount = (std::min)((std::min)(block_size, max_assignable)
, amount);
TORRENT_ASSERT(hand_out_amount > 0);
TORRENT_ASSERT(amount == limit - m_current_quota);
amount -= hand_out_amount;
TORRENT_ASSERT(hand_out_amount <= qe.max_block_size);
l.unlock();
@ -383,7 +392,6 @@ private:
l.lock();
add_history_entry(history_entry<PeerConnection, Torrent>(
qe.peer, t, hand_out_amount, now + bw_window_size));
amount = limit - m_current_quota;
}
if (!q.empty()) m_queue.insert(m_queue.begin(), q.begin(), q.end());
if (!tmp.empty()) m_queue.insert(m_queue.begin(), tmp.begin(), tmp.end());