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Code Issues Releases Wiki Activity

ircd::server: Fix insertion/resolver reentrancy conflict.

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This commit is contained in:
Jason Volk 2019-03-22 21:00:34 -07:00
parent 2417d7ac7d
commit b72758f904
1 changed files with 21 additions and 25 deletions
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46
ircd/server.cc
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@ -21,7 +21,8 @@ namespace ircd::server
template<class F> size_t accumulate_tags(F&&);
// Internal control
std::unique_ptr<peer> create(const net::hostport &);
static decltype(ircd::server::peers)::iterator
create(const net::hostport &, decltype(peers)::iterator &);
}
decltype(ircd::server::log)
@ -123,40 +124,35 @@ ircd::server::get(const net::hostport &hostport)
auto it(peers.lower_bound(canonized));
if(it == peers.end() || it->first != canonized)
{
auto peer
{
create(hostport)
};
log::debug
{
log, "peer(%p) for %s created; adding...",
peer.get(),
canonized
};
assert(bool(peer));
assert(!empty(peer->hostcanon));
const string_view key{peer->hostcanon};
it = peers.emplace_hint(it, key, std::move(peer));
assert(it->second->hostcanon.data() == it->first.data());
assert(key == canonized);
}
it = create(hostport, it);
return *it->second;
}
std::unique_ptr<ircd::server::peer>
ircd::server::create(const net::hostport &hostport)
decltype(ircd::server::peers)::iterator
ircd::server::create(const net::hostport &hostport,
decltype(peers)::iterator &it)
{
auto peer
{
std::make_unique<server::peer>(hostport)
};
peer->resolve(peer->open_opts.hostport);
return peer;
log::debug
{
log, "peer(%p) for %s created; adding...",
peer.get(),
peer->hostcanon,
};
assert(bool(peer));
assert(!empty(peer->hostcanon));
const string_view key{peer->hostcanon};
it = peers.emplace_hint(it, key, std::move(peer));
assert(it->second->hostcanon.data() == it->first.data());
it->second->resolve(it->second->open_opts.hostport);
return it;
}
ircd::server::peer &