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Fix mnodeman.cs vs cs_vPendingMasternodes vs cs_main deadlock (#2200)

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Decouple cs_vPendingMasternodes from mnodeman.cs to fix the issue. Also drop deprecated/unused stuff in mnv preparation while at it.
This commit is contained in:
UdjinM6 2018-10-11 17:32:05 +03:00 committed by GitHub
parent eaef902025
commit b3fc236af5
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2 changed files with 22 additions and 19 deletions
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38
src/masternodeman.cpp
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@ -1186,9 +1186,10 @@ void CMasternodeMan::DoFullVerificationStep(CConnman& connman)
rank_pair_vec_t vecMasternodeRanks;
GetMasternodeRanks(vecMasternodeRanks, nCachedBlockHeight - 1, MIN_POSE_PROTO_VERSION);
LOCK(cs);
std::vector<CAddress> vAddr;
int nCount = 0;
{
LOCK(cs);
int nMyRank = -1;
int nRanksTotal = (int)vecMasternodeRanks.size();
@ -1216,13 +1217,6 @@ void CMasternodeMan::DoFullVerificationStep(CConnman& connman)
int nOffset = MAX_POSE_RANK + nMyRank - 1;
if(nOffset >= (int)vecMasternodeRanks.size()) return;
std::vector<const CMasternode*> vSortedByAddr;
for (const auto& mnpair : mapMasternodes) {
vSortedByAddr.push_back(&mnpair.second);
}
sort(vSortedByAddr.begin(), vSortedByAddr.end(), CompareByAddr());
auto it = vecMasternodeRanks.begin() + nOffset;
while(it != vecMasternodeRanks.end()) {
if(it->second.IsPoSeVerified() || it->second.IsPoSeBanned()) {
@ -1238,16 +1232,22 @@ void CMasternodeMan::DoFullVerificationStep(CConnman& connman)
}
LogPrint("masternode", "CMasternodeMan::DoFullVerificationStep -- Verifying masternode %s rank %d/%d address %s\n",
it->second.outpoint.ToStringShort(), it->first, nRanksTotal, it->second.addr.ToString());
if(SendVerifyRequest(CAddress(it->second.addr, NODE_NETWORK), vSortedByAddr, connman)) {
nCount++;
if(nCount >= MAX_POSE_CONNECTIONS) break;
CAddress addr = CAddress(it->second.addr, NODE_NETWORK);
if(CheckVerifyRequestAddr(addr, connman)) {
vAddr.push_back(addr);
if((int)vAddr.size() >= MAX_POSE_CONNECTIONS) break;
}
nOffset += MAX_POSE_CONNECTIONS;
if(nOffset >= (int)vecMasternodeRanks.size()) break;
it += MAX_POSE_CONNECTIONS;
}
} // cs
LogPrint("masternode", "CMasternodeMan::DoFullVerificationStep -- Sent verification requests to %d masternodes\n", nCount);
for (const auto& addr : vAddr) {
PrepareVerifyRequest(addr, connman);
}
LogPrint("masternode", "CMasternodeMan::DoFullVerificationStep -- Prepared verification requests for %d masternodes\n", vAddr.size());
}
// This function tries to find masternodes with the same addr,
@ -1311,26 +1311,28 @@ void CMasternodeMan::CheckSameAddr()
}
}
bool CMasternodeMan::SendVerifyRequest(const CAddress& addr, const std::vector<const CMasternode*>& vSortedByAddr, CConnman& connman)
bool CMasternodeMan::CheckVerifyRequestAddr(const CAddress& addr, CConnman& connman)
{
if (deterministicMNManager->IsDeterministicMNsSporkActive())
return false;
if(netfulfilledman.HasFulfilledRequest(addr, strprintf("%s", NetMsgType::MNVERIFY)+"-request")) {
// we already asked for verification, not a good idea to do this too often, skip it
LogPrint("masternode", "CMasternodeMan::SendVerifyRequest -- too many requests, skipping... addr=%s\n", addr.ToString());
LogPrint("masternode", "CMasternodeMan::%s -- too many requests, skipping... addr=%s\n", __func__, addr.ToString());
return false;
}
if (connman.IsMasternodeOrDisconnectRequested(addr)) return false;
return !connman.IsMasternodeOrDisconnectRequested(addr);
}
void CMasternodeMan::PrepareVerifyRequest(const CAddress& addr, CConnman& connman)
{
connman.AddPendingMasternode(addr);
// use random nonce, store it and require node to reply with correct one later
CMasternodeVerification mnv(addr, GetRandInt(999999), nCachedBlockHeight - 1);
LOCK(cs_mapPendingMNV);
mapPendingMNV.insert(std::make_pair(addr, std::make_pair(GetTime(), mnv)));
LogPrintf("CMasternodeMan::SendVerifyRequest -- verifying node using nonce %d addr=%s\n", mnv.nonce, addr.ToString());
return true;
LogPrintf("CMasternodeMan::%s -- verifying node using nonce %d addr=%s\n", __func__, mnv.nonce, addr.ToString());
}
void CMasternodeMan::ProcessPendingMnvRequests(CConnman& connman)

3
src/masternodeman.h
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@ -197,7 +197,8 @@ public:
void DoFullVerificationStep(CConnman& connman);
void CheckSameAddr();
bool SendVerifyRequest(const CAddress& addr, const std::vector<const CMasternode*>& vSortedByAddr, CConnman& connman);
bool CheckVerifyRequestAddr(const CAddress& addr, CConnman& connman);
void PrepareVerifyRequest(const CAddress& addr, CConnman& connman);
void ProcessPendingMnvRequests(CConnman& connman);
void SendVerifyReply(CNode* pnode, CMasternodeVerification& mnv, CConnman& connman);
void ProcessVerifyReply(CNode* pnode, CMasternodeVerification& mnv);