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refactor: net: avoid duplicate map lookups to mapLocalHost

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This commit is contained in:
Sebastian Falbesoner 2021-09-06 00:10:31 +02:00
parent 0ebd88fe0b
commit 330d3aa1a2
1 changed files with 10 additions and 12 deletions
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22
src/net.cpp
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@ -190,8 +190,8 @@ CAddress GetLocalAddress(const CNetAddr *paddrPeer, ServiceFlags nLocalServices)
static int GetnScore(const CService& addr)
{
LOCK(cs_mapLocalHost);
if (mapLocalHost.count(addr) == 0) return 0;
return mapLocalHost[addr].nScore;
const auto it = mapLocalHost.find(addr);
return (it != mapLocalHost.end()) ? it->second.nScore : 0;
}
// Is our peer's addrLocal potentially useful as an external IP source?
@ -243,10 +243,10 @@ bool AddLocal(const CService& addr, int nScore)
{
LOCK(cs_mapLocalHost);
bool fAlready = mapLocalHost.count(addr) > 0;
LocalServiceInfo &info = mapLocalHost[addr];
if (!fAlready || nScore >= info.nScore) {
info.nScore = nScore + (fAlready ? 1 : 0);
const auto [it, is_newly_added] = mapLocalHost.emplace(addr, LocalServiceInfo());
LocalServiceInfo &info = it->second;
if (is_newly_added || nScore >= info.nScore) {
info.nScore = nScore + (is_newly_added ? 0 : 1);
info.nPort = addr.GetPort();
}
}
@ -288,12 +288,10 @@ bool IsReachable(const CNetAddr &addr)
/** vote for a local address */
bool SeenLocal(const CService& addr)
{
{
LOCK(cs_mapLocalHost);
if (mapLocalHost.count(addr) == 0)
return false;
mapLocalHost[addr].nScore++;
}
LOCK(cs_mapLocalHost);
const auto it = mapLocalHost.find(addr);
if (it == mapLocalHost.end()) return false;
++it->second.nScore;
return true;
}