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Optimisation: Store transaction list order in memory rather than compute it every need

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Huge performance improvement (450%) for zapwallettxes
This commit is contained in:
Luke Dashjr
2015-10-19 09:19:38 +00:00
parent eac53ec992
commit 3e7c89196c
6 changed files with 44 additions and 52 deletions
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12
src/wallet/rpcwallet.cpp
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@@ -835,7 +835,7 @@ UniValue movecmd(const UniValue& params, bool fHelp)
debit.nTime = nNow;
debit.strOtherAccount = strTo;
debit.strComment = strComment;
walletdb.WriteAccountingEntry(debit);
pwalletMain->AddAccountingEntry(debit, walletdb);
// Credit
CAccountingEntry credit;
@@ -845,7 +845,7 @@ UniValue movecmd(const UniValue& params, bool fHelp)
credit.nTime = nNow;
credit.strOtherAccount = strFrom;
credit.strComment = strComment;
walletdb.WriteAccountingEntry(credit);
pwalletMain->AddAccountingEntry(credit, walletdb);
if (!walletdb.TxnCommit())
throw JSONRPCError(RPC_DATABASE_ERROR, "database error");
@@ -1470,11 +1470,10 @@ UniValue listtransactions(const UniValue& params, bool fHelp)
UniValue ret(UniValue::VARR);
std::list<CAccountingEntry> acentries;
CWallet::TxItems txOrdered = pwalletMain->OrderedTxItems(acentries, strAccount);
const CWallet::TxItems & txOrdered = pwalletMain->wtxOrdered;
// iterate backwards until we have nCount items to return:
for (CWallet::TxItems::reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
for (CWallet::TxItems::const_reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
{
CWalletTx *const pwtx = (*it).second.first;
if (pwtx != 0)
@@ -1579,8 +1578,7 @@ UniValue listaccounts(const UniValue& params, bool fHelp)
}
}
list<CAccountingEntry> acentries;
CWalletDB(pwalletMain->strWalletFile).ListAccountCreditDebit("*", acentries);
const list<CAccountingEntry> & acentries = pwalletMain->laccentries;
BOOST_FOREACH(const CAccountingEntry& entry, acentries)
mapAccountBalances[entry.strAccount] += entry.nCreditDebit;