bmckwm/lmdbal
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some more transaction thought on cache

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This commit is contained in:
Blue 2023-04-03 21:48:13 +03:00
parent f0779ae2aa
commit 8be63d7551
Signed by untrusted user: blue
GPG key ID: 9B203B252A63EE38
6 changed files with 241 additions and 58 deletions

44
src/storage.cpp
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@ -31,31 +31,20 @@ LMDBAL::iStorage::~iStorage() {}
void LMDBAL::iStorage::drop() {
ensureOpened(dropMethodName);
MDB_txn *txn;
int rc = mdb_txn_begin(db->environment, NULL, 0, &txn);
if (rc) {
mdb_txn_abort(txn);
throw Unknown(db->name, mdb_strerror(rc), name);
}
rc = drop(txn);
if (rc) {
mdb_txn_abort(txn);
TransactionID txn = db->beginTransaction();
int rc = drop(txn);
if (rc != MDB_SUCCESS) {
abortTransaction(txn);
throw Unknown(db->name, mdb_strerror(rc), name);
}
mdb_txn_commit(txn);
db->commitTransaction(txn);
}
int LMDBAL::iStorage::drop(MDB_txn* transaction) {
int LMDBAL::iStorage::drop(TransactionID transaction) {
return mdb_drop(transaction, dbi, 0);
}
const std::string & LMDBAL::iStorage::dbName() const {
return db->name;}
bool LMDBAL::iStorage::isDBOpened() const {
return db->opened;}
void LMDBAL::iStorage::ensureOpened(const std::string& methodName) const {
if (!db->opened)
throw Closed(methodName, db->name, name);
@ -80,10 +69,8 @@ LMDBAL::SizeType LMDBAL::iStorage::count() const {
LMDBAL::SizeType LMDBAL::iStorage::count(TransactionID txn) const {
MDB_stat stat;
int rc = mdb_stat(txn, dbi, &stat);
if (rc) {
mdb_txn_abort(txn);
if (rc != MDB_SUCCESS)
throw Unknown(db->name, mdb_strerror(rc), name);
}
return stat.ms_entries;
}
@ -117,6 +104,12 @@ void LMDBAL::iStorage::throwUnknown(int rc, LMDBAL::TransactionID txn) const {
throwUnknown(rc);
}
const std::string & LMDBAL::iStorage::dbName() const {
return db->name;}
bool LMDBAL::iStorage::isDBOpened() const {
return db->opened;}
void LMDBAL::iStorage::throwUnknown(int rc) const {
throw Unknown(db->name, mdb_strerror(rc), name);}
@ -135,19 +128,18 @@ LMDBAL::TransactionID LMDBAL::iStorage::beginTransaction() const {
void LMDBAL::iStorage::abortTransaction(LMDBAL::TransactionID id) const {
db->abortPrivateTransaction(id, name);}
void LMDBAL::iStorage::commitTransaction(LMDBAL::TransactionID id) const {
void LMDBAL::iStorage::commitTransaction(LMDBAL::TransactionID id) {
db->commitPrivateTransaction(id, name);}
void LMDBAL::iStorage::transactionStarted(LMDBAL::TransactionID txn, bool readOnly) const {
UNUSED(txn);
UNUSED(readOnly);
}
void LMDBAL::iStorage::transactionCommited(LMDBAL::TransactionID txn) const {
UNUSED(txn);
}
void LMDBAL::iStorage::transactionCommited(LMDBAL::TransactionID txn) {
UNUSED(txn);}
void LMDBAL::iStorage::transactionAborted(LMDBAL::TransactionID txn) const {
UNUSED(txn);
}
UNUSED(txn);}