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cryptonote_protocol: retry stale spans early

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Connections can be dropped by the net_node layer,
unbeknownst to cryptonote_protocol, which would then
not flush any spans scheduled to that connection,
which would cause it to be only downloaded again
once it becomes the next span (possibly after a small
delay if it had been requested less than 5 seconds
ago).
This commit is contained in:
moneromooo-monero 2017-07-11 21:48:54 +01:00
parent 90df52e12f
commit f57ee382b8
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GPG key ID: 686F07454D6CEFC3
3 changed files with 25 additions and 0 deletions
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16
src/cryptonote_protocol/block_queue.cpp
View file

@ -76,6 +76,22 @@ void block_queue::flush_spans(const boost::uuids::uuid &connection_id, bool all)
}
}
void block_queue::flush_stale_spans(const std::set<boost::uuids::uuid> &live_connections)
{
boost::unique_lock<boost::recursive_mutex> lock(mutex);
block_map::iterator i = blocks.begin();
if (i != blocks.end() && is_blockchain_placeholder(*i))
++i;
while (i != blocks.end())
{
block_map::iterator j = i++;
if (live_connections.find(j->connection_id) == live_connections.end() && j->blocks.size() == 0)
{
blocks.erase(j);
}
}
}
void block_queue::remove_span(uint64_t start_block_height)
{
boost::unique_lock<boost::recursive_mutex> lock(mutex);

1
src/cryptonote_protocol/block_queue.h
View file

@ -70,6 +70,7 @@ namespace cryptonote
void add_blocks(uint64_t height, std::list<cryptonote::block_complete_entry> bcel, const boost::uuids::uuid &connection_id, float rate, size_t size);
void add_blocks(uint64_t height, uint64_t nblocks, const boost::uuids::uuid &connection_id, boost::posix_time::ptime time = boost::date_time::min_date_time);
void flush_spans(const boost::uuids::uuid &connection_id, bool all = false);
void flush_stale_spans(const std::set<boost::uuids::uuid> &live_connections);
void remove_span(uint64_t start_block_height);
void remove_spans(const boost::uuids::uuid &connection_id, uint64_t start_block_height);
void mark_last_block(uint64_t last_block_height);

8
src/cryptonote_protocol/cryptonote_protocol_handler.inl
View file

@ -1189,6 +1189,14 @@ skip:
{
m_block_queue.mark_last_block(m_core.get_current_blockchain_height() - 1);
// flush stale spans
std::set<boost::uuids::uuid> live_connections;
m_p2p->for_each_connection([&](cryptonote_connection_context& context, nodetool::peerid_type peer_id, uint32_t support_flags)->bool{
live_connections.insert(context.m_connection_id);
return true;
});
m_block_queue.flush_stale_spans(live_connections);
// if we don't need to get next span, and the block queue is full enough, wait a bit
bool start_from_current_chain = false;
if (!force_next_span)