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mdbx: minor refine/optimize mdbx_page_new().

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Change-Id: Ie1b227cbeceec8b1fc64630b8d1c12210d98dc20
This commit is contained in:
Leonid Yuriev 2019-10-18 18:19:54 +03:00
parent 7878b2e31d
commit 36477ef408
1 changed files with 8 additions and 18 deletions
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26
src/elements/core.c
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@ -10580,35 +10580,25 @@ static int mdbx_page_new(MDBX_cursor *mc, unsigned flags, unsigned num,
if (unlikely((rc = mdbx_page_alloc(mc, num, &np, MDBX_ALLOC_ALL))))
return rc;
*mp = np;
mdbx_debug("allocated new page #%" PRIaPGNO ", size %u", np->mp_pgno,
mc->mc_txn->mt_env->me_psize);
np->mp_flags = (uint16_t)(flags | P_DIRTY);
np->mp_lower = 0;
np->mp_upper = (indx_t)(mc->mc_txn->mt_env->me_psize - PAGEHDRSZ);
if (IS_BRANCH(np))
mc->mc_db->md_branch_pages++;
else if (IS_LEAF(np))
mc->mc_db->md_leaf_pages++;
else {
mdbx_cassert(mc, IS_OVERFLOW(np));
mc->mc_db->md_branch_pages += IS_BRANCH(np);
mc->mc_db->md_leaf_pages += IS_LEAF(np);
if (unlikely(IS_OVERFLOW(np))) {
mc->mc_db->md_overflow_pages += num;
np->mp_pages = num;
}
if (unlikely(mc->mc_flags & C_SUB)) {
mdbx_cassert(mc, !(mc->mc_flags & C_SUB));
} else if (unlikely(mc->mc_flags & C_SUB)) {
MDBX_db *outer = mdbx_outer_db(mc);
if (IS_BRANCH(np))
outer->md_branch_pages++;
else if (IS_LEAF(np))
outer->md_leaf_pages++;
else {
mdbx_cassert(mc, IS_OVERFLOW(np));
outer->md_overflow_pages += num;
}
outer->md_branch_pages += IS_BRANCH(np);
outer->md_leaf_pages += IS_LEAF(np);
}
*mp = np;
return MDBX_SUCCESS;
}