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mdbx: minor simplify page_get().

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Change-Id: I2a548ea008fad29da8382946dff3c7d9bffa1e85
This commit is contained in:
Leonid Yuriev
2021-02-03 23:58:44 +03:00
parent d78150de79
commit 0cc695e22e
1 changed files with 4 additions and 6 deletions
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10
src/core.c
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@@ -12452,20 +12452,18 @@ __hot static int mdbx_page_get(MDBX_cursor *mc, pgno_t pgno, MDBX_page **ret,
MDBX_txn *txn = mc->mc_txn;
if (unlikely(pgno >= txn->mt_next_pgno)) {
mdbx_error("page #%" PRIaPGNO " beyond next-pgno", pgno);
notfound:
*ret = nullptr;
txn->mt_flags |= MDBX_TXN_ERROR;
return MDBX_PAGE_NOTFOUND;
goto corrupted;
}
MDBX_env *const env = txn->mt_env;
MDBX_page *p = nullptr;
mdbx_assert(env, ((txn->mt_flags ^ env->me_flags) & MDBX_WRITEMAP) == 0);
mdbx_assert(env, pp_txnid >= MIN_TXNID && pp_txnid <= txn->mt_txnid);
const uint16_t illegal_bits =
(txn->mt_flags & MDBX_TXN_RDONLY)
? ~(P_BRANCH | P_LEAF | P_LEAF2 | P_OVERFLOW)
: ~(P_BRANCH | P_LEAF | P_LEAF2 | P_OVERFLOW | P_DIRTY);
MDBX_page *p;
int level;
if (unlikely((txn->mt_flags & (MDBX_TXN_RDONLY | MDBX_WRITEMAP)) == 0)) {
level = 1;
@@ -12498,7 +12496,7 @@ dirty:
bad_page(
p, "mismatch actual pgno (%" PRIaPGNO ") != expected (%" PRIaPGNO ")\n",
p->mp_pgno, pgno);
goto notfound;
goto corrupted;
}
if (unlikely(p->mp_flags & illegal_bits)) {
@@ -12529,7 +12527,7 @@ dirty:
corrupted:
mc->mc_txn->mt_flags |= MDBX_TXN_ERROR;
return MDBX_CORRUPTED;
return MDBX_PAGE_NOTFOUND;
}
/* Finish mdbx_page_search() / mdbx_page_search_lowest().