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Merge #12639: Reduce cs_main lock in listunspent

Browse source 
a59dac3 refactor: Avoid extra lookups of mapAddressBook in listunspent RPC (João Barbosa)
d76962e rpc: Reduce cs_main lock in listunspent (João Barbosa)

Pull request description:

  On my system, where the wallet has 10000 unspents, the `cs_main` lock duration changed from 191ms to 36ms. The loop that generates the response takes around 155ms. So, the lock duration is reduced to around 20%.

Tree-SHA512: ddaae591f39da59a9d1a8e9ffe773d857687789476f566ca273d310ad531da6dacff80cac69f3334c601c251ac7c5ed4136656c725aa3d611c6bbf734111946e
This commit is contained in:
Wladimir J. van der Laan 2018-05-03 14:43:19 +02:00
parent b62b437acd a59dac35ab
commit 7eb7076f70
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GPG key ID: 1E4AED62986CD25D
1 changed files with 10 additions and 5 deletions
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15
src/wallet/rpcwallet.cpp
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@ -3149,9 +3149,13 @@ UniValue listunspent(const JSONRPCRequest& request)
UniValue results(UniValue::VARR);
std::vector<COutput> vecOutputs;
LOCK2(cs_main, pwallet->cs_wallet);
{
LOCK2(cs_main, pwallet->cs_wallet);
pwallet->AvailableCoins(vecOutputs, !include_unsafe, nullptr, nMinimumAmount, nMaximumAmount, nMinimumSumAmount, nMaximumCount, nMinDepth, nMaxDepth);
}
LOCK(pwallet->cs_wallet);
pwallet->AvailableCoins(vecOutputs, !include_unsafe, nullptr, nMinimumAmount, nMaximumAmount, nMinimumSumAmount, nMaximumCount, nMinDepth, nMaxDepth);
for (const COutput& out : vecOutputs) {
CTxDestination address;
const CScript& scriptPubKey = out.tx->tx->vout[out.i].scriptPubKey;
@ -3167,10 +3171,11 @@ UniValue listunspent(const JSONRPCRequest& request)
if (fValidAddress) {
entry.pushKV("address", EncodeDestination(address));
if (pwallet->mapAddressBook.count(address)) {
entry.pushKV("label", pwallet->mapAddressBook[address].name);
auto i = pwallet->mapAddressBook.find(address);
if (i != pwallet->mapAddressBook.end()) {
entry.pushKV("label", i->second.name);
if (IsDeprecatedRPCEnabled("accounts")) {
entry.pushKV("account", pwallet->mapAddressBook[address].name);
entry.pushKV("account", i->second.name);
}
}