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mdbx: minor refine mdbx_page_search() internals.

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Леонид Юрьев (Leonid Yuriev) 2022-02-19 13:18:03 +03:00
parent 7ade182d64
commit bfea3ca9fb
1 changed files with 11 additions and 9 deletions
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20
src/core.c
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@ -13682,15 +13682,17 @@ __hot static int mdbx_page_search(MDBX_cursor *mc, const MDBX_val *key,
pp_txnid = /* mc->mc_db->md_mod_txnid maybe zero in a legacy DB */ pp_txnid pp_txnid = /* mc->mc_db->md_mod_txnid maybe zero in a legacy DB */ pp_txnid
? pp_txnid ? pp_txnid
: mc->mc_txn->mt_txnid; : mc->mc_txn->mt_txnid;
MDBX_txn *scan = mc->mc_txn; if ((mc->mc_txn->mt_flags & MDBX_TXN_RDONLY) == 0) {
do MDBX_txn *scan = mc->mc_txn;
if ((scan->mt_flags & MDBX_TXN_DIRTY) && do
(mc->mc_dbi == MAIN_DBI || if ((scan->mt_flags & MDBX_TXN_DIRTY) &&
(scan->mt_dbistate[mc->mc_dbi] & DBI_DIRTY))) { (mc->mc_dbi == MAIN_DBI ||
pp_txnid = scan->mt_front; (scan->mt_dbistate[mc->mc_dbi] & DBI_DIRTY))) {
break; pp_txnid = scan->mt_front;
} break;
while (unlikely((scan = scan->mt_parent) != nullptr)); }
while (unlikely((scan = scan->mt_parent) != nullptr));
}
if (unlikely((rc = mdbx_page_get(mc, root, &mc->mc_pg[0], pp_txnid)) != 0)) if (unlikely((rc = mdbx_page_get(mc, root, &mc->mc_pg[0], pp_txnid)) != 0))
return rc; return rc;
} }