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Reusing prepared statements is slower.

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This commit is contained in:
JoelKatz
2013-04-01 20:24:01 -07:00
parent 2e21391c93
commit 78d1a93e69
2 changed files with 6 additions and 19 deletions
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19
src/cpp/ripple/Ledger.cpp
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@@ -538,14 +538,13 @@ Ledger::pointer Ledger::loadByIndex(uint32 ledgerIndex)
Database* db = theApp->getLedgerDB()->getDB();
ScopedLock sl(theApp->getLedgerDB()->getDBLock());
static SqliteStatement pSt(db->getSqliteDB(), "SELECT "
SqliteStatement pSt(db->getSqliteDB(), "SELECT "
"LedgerHash,PrevHash,AccountSetHash,TransSetHash,TotalCoins,"
"ClosingTime,PrevClosingTime,CloseTimeRes,CloseFlags,LedgerSeq"
" from Ledgers WHERE LedgerSeq = ?;");
pSt.bind(1, ledgerIndex);
ledger = getSQL1(&pSt);
pSt.reset();
}
if (ledger)
Ledger::getSQL2(ledger);
@@ -559,14 +558,13 @@ Ledger::pointer Ledger::loadByHash(const uint256& ledgerHash)
Database* db = theApp->getLedgerDB()->getDB();
ScopedLock sl(theApp->getLedgerDB()->getDBLock());
static SqliteStatement pSt(db->getSqliteDB(), "SELECT "
SqliteStatement pSt(db->getSqliteDB(), "SELECT "
"LedgerHash,PrevHash,AccountSetHash,TransSetHash,TotalCoins,"
"ClosingTime,PrevClosingTime,CloseTimeRes,CloseFlags,LedgerSeq"
" from Ledgers WHERE LedgerHash = ?;");
pSt.bind(1, ledgerHash.GetHex());
ledger = getSQL1(&pSt);
pSt.reset();
}
if (ledger)
{
@@ -730,7 +728,7 @@ bool Ledger::getHashesByIndex(uint32 ledgerIndex, uint256& ledgerHash, uint256&
DatabaseCon *con = theApp->getLedgerDB();
ScopedLock sl(con->getDBLock());
static SqliteStatement pSt(con->getDB()->getSqliteDB(),
SqliteStatement pSt(con->getDB()->getSqliteDB(),
"SELECT LedgerHash,PrevHash FROM Ledgers INDEXED BY SeqLedger Where LedgerSeq = ?;");
pSt.bind(1, ledgerIndex);
@@ -738,13 +736,11 @@ bool Ledger::getHashesByIndex(uint32 ledgerIndex, uint256& ledgerHash, uint256&
int ret = pSt.step();
if (pSt.isDone(ret))
{
pSt.reset();
cLog(lsTRACE) << "Don't have ledger " << ledgerIndex;
return false;
}
if (!pSt.isRow(ret))
{
pSt.reset();
assert(false);
cLog(lsFATAL) << "Unexpected statement result " << ret;
return false;
@@ -752,7 +748,6 @@ bool Ledger::getHashesByIndex(uint32 ledgerIndex, uint256& ledgerHash, uint256&
ledgerHash.SetHex(pSt.peekString(0), true);
parentHash.SetHex(pSt.peekString(1), true);
pSt.reset();
return true;
@@ -790,7 +785,7 @@ std::map< uint32, std::pair<uint256, uint256> > Ledger::getHashesByIndex(uint32
DatabaseCon *con = theApp->getLedgerDB();
ScopedLock sl(con->getDBLock());
static SqliteStatement pSt(con->getDB()->getSqliteDB(),
SqliteStatement pSt(con->getDB()->getSqliteDB(),
"SELECT LedgerSeq,LedgerHash,PrevHash FROM Ledgers INDEXED BY SeqLedger "
"WHERE LedgerSeq >= ? AND LedgerSeq <= ?;");
@@ -803,15 +798,9 @@ std::map< uint32, std::pair<uint256, uint256> > Ledger::getHashesByIndex(uint32
{
int r = pSt.step();
if (pSt.isDone(r))
{
pSt.reset();
return ret;
}
if (!pSt.isRow(r))
{
pSt.reset();
return ret;
}
hashes.first.SetHex(pSt.peekString(1), true);
hashes.second.SetHex(pSt.peekString(2), true);
ret[pSt.getUInt32(0)] = hashes;