CTEST(txn, begin_with_no_parent)
{
int r;
struct txn *tx1;
struct txn *tx2;
struct txn *tx3;
struct txnmgr *tm = txnmgr_new();
LOGGER *logger = logger_new(NULL, tm);
/* transaction 1 */
r = txn_begin(NULL, logger, TXN_ISO_REPEATABLE, &tx1);
ASSERT_EQUAL(1, r);
ASSERT_EQUAL(0, tx1->txnid);
ASSERT_EQUAL(1, tm->live_root_txnids->used);
ASSERT_EQUAL(tx1->txnid, tm->live_root_txnids->txnids[0]);
/* transaction 2 */
r = txn_begin(NULL, logger, TXN_ISO_REPEATABLE, &tx2);
ASSERT_EQUAL(1, r);
ASSERT_EQUAL(1, tx2->txnid);
ASSERT_EQUAL(tx1->txnid, tx2->txnid_clone->txnids[0]);
ASSERT_EQUAL(tx2->txnid, tx2->txnid_clone->txnids[1]);
/* transaction 3 */
r = txn_begin(NULL, logger, TXN_ISO_SERIALIZABLE, &tx3);
ASSERT_EQUAL(1, r);
ASSERT_EQUAL(2, tx3->txnid);
ASSERT_NULL(tx3->txnid_clone);
logger_free(logger);
txnmgr_free(tm);
}
struct env *env_open(const char *home, uint32_t flags) {
LOG;
struct env *e;
e = xcalloc(1, sizeof(*e));
e->flags = flags;
/* tree */
e->inner_node_fanout = 16;
e->inner_default_node_size = 4 << 20; /* 4MB */
e->leaf_default_node_size = 4 << 20; /* 4MB */
e->leaf_default_basement_size = 128 << 10; /* 128KB */
/* cache */
e->cache_limits_bytes = 1024 << 20;
e->cache_high_watermark = 80; /* 80% */
e->cache_flush_period_ms = 100; /* 0.1s */
e->cache_checkpoint_period_ms = 600000; /* 60s */
/* IO */
e->use_directio = 1;
e->redo_path = "./dbbench";
e->enable_redo_log = 1;
if (!home)
home = ".";
e->dir = xcalloc(1, strlen(home) + 1);
xmemcpy(e->dir, (void*)home, strlen(home));
ness_check_dir(e->dir);
/* compress */
e->compress_method = NESS_SNAPPY_METHOD;
/* callback */
e->bt_compare_func = bt_compare_func_builtin;
/* internal */
e->cache = cache_new(e);
/* e->cache->cf_first->hdr->blocksize */
nassert(e->cache);
e->txnmgr = txnmgr_new();
nassert(e->txnmgr);
e->status = status_new();
nassert(e->status);
return e;
}
CTEST(txn, begin_with_parent)
{
int r;
struct txn *tx1;
struct txn *tx2;
struct txn *tx3;
struct txn *tx4;
struct txnmgr *tm = txnmgr_new();
LOGGER *logger = logger_new(NULL, tm);
/* tx1: snapshot */
r = txn_begin(NULL, logger, TXN_ISO_REPEATABLE, &tx1);
ASSERT_EQUAL(1, r);
ASSERT_EQUAL(0, tx1->txnid);
ASSERT_EQUAL(1, tm->live_root_txnids->used);
ASSERT_EQUAL(1, tx1->txnid_clone->used);
ASSERT_EQUAL(tx1->txnid, tm->live_root_txnids->txnids[0]);
/* tx2: snapshot */
r = txn_begin(NULL, logger, TXN_ISO_REPEATABLE, &tx2);
ASSERT_EQUAL(1, r);
ASSERT_EQUAL(1, tx2->txnid);
ASSERT_EQUAL(2, tx2->txnid_clone->used);
ASSERT_EQUAL(tx1->txnid, tx2->txnid_clone->txnids[0]);
ASSERT_EQUAL(tx2->txnid, tx2->txnid_clone->txnids[1]);
/* tx3: not snapshot */
r = txn_begin(NULL, logger, TXN_ISO_SERIALIZABLE, &tx3);
ASSERT_EQUAL(1, r);
ASSERT_EQUAL(2, tx3->txnid);
ASSERT_NULL(tx3->txnid_clone);
/* tx4: not snapshot with parent tx2 */
r = txn_begin(tx2, logger, TXN_ISO_REPEATABLE, &tx4);
ASSERT_EQUAL(1, r);
ASSERT_EQUAL(3, tx4->txnid);
ASSERT_EQUAL(2, tx4->txnid_clone->used);
ASSERT_EQUAL(tx1->txnid, tx4->txnid_clone->txnids[0]);
ASSERT_EQUAL(tx2->txnid, tx4->txnid_clone->txnids[1]);
logger_free(logger);
txnmgr_free(tm);
}
