homework-jianmu/source/libs/tdb/src/db/tdbTxn.c

48 lines
1.3 KiB
C

/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "tdbInt.h"
int tdbTxnOpen(TXN *pTxn, int64_t txnid, void *(*xMalloc)(void *, size_t), void (*xFree)(void *, void *), void *xArg,
int flags) {
// not support read-committed version at the moment
ASSERT(flags == 0 || flags == (TDB_TXN_WRITE | TDB_TXN_READ_UNCOMMITTED));
pTxn->flags = flags;
pTxn->txnId = txnid;
pTxn->xMalloc = xMalloc;
pTxn->xFree = xFree;
pTxn->xArg = xArg;
return 0;
}
int tdbTxnCloseImpl(TXN *pTxn) {
if (pTxn) {
if (pTxn->jPageSet) {
hashset_destroy(pTxn->jPageSet);
pTxn->jPageSet = NULL;
}
if (pTxn->jfd) {
tdbOsClose(pTxn->jfd);
ASSERT(pTxn->jfd == NULL);
}
tdbOsFree(pTxn);
}
return 0;
}