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mdbx: support keys and dupsort values upto maxnode (half of a page) size.

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Change-Id: I7717d55a0d6a7fdc4dc3caba8f8d3ad46a132f61
This commit is contained in:
Leonid Yuriev 2019-10-05 22:07:41 +03:00
parent d9e1d7f23a
commit 8291de71cb
1 changed files with 14 additions and 5 deletions
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19
src/elements/core.c
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@ -6285,7 +6285,7 @@ int __cold mdbx_env_get_maxkeysize(MDBX_env *env) {
#define mdbx_nodemax(pagesize) \
(((((pagesize)-PAGEHDRSZ) / MDBX_MINKEYS) & ~(uintptr_t)1) - sizeof(indx_t))
#define mdbx_maxkey(nodemax) (((nodemax)-NODESIZE - sizeof(MDBX_db)) / 2)
#define mdbx_maxkey(nodemax) ((nodemax)-NODESIZE - sizeof(MDBX_db))
#define mdbx_maxgc_ov1page(pagesize) \
(((pagesize)-PAGEHDRSZ) / sizeof(pgno_t) - 1)
@ -9329,6 +9329,11 @@ int mdbx_cursor_put(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data,
return rc;
flags -= MDBX_CURRENT;
}
} else if (unlikely(LEAFSIZE(key, data) > env->me_nodemax)) {
rc = mdbx_cursor_del(mc, 0);
if (rc != MDBX_SUCCESS)
return rc;
flags -= MDBX_CURRENT;
}
}
}
@ -9560,18 +9565,21 @@ int mdbx_cursor_put(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data,
/* Was a single item before, must convert now */
if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) {
/* Just overwrite the current item */
if (flags & MDBX_CURRENT) {
mdbx_cassert(mc, LEAFSIZE(key, data) <= env->me_nodemax);
goto current;
}
/* does data match? */
if (!mc->mc_dbx->md_dcmp(data, &olddata)) {
if (unlikely(flags & (MDBX_NODUPDATA | MDBX_APPENDDUP)))
return MDBX_KEYEXIST;
/* overwrite it */
mdbx_cassert(mc, LEAFSIZE(key, data) <= env->me_nodemax);
goto current;
}
/* Just overwrite the current item */
if (flags & MDBX_CURRENT)
goto current;
/* Back up original data item */
dupdata_flag = 1;
dkey.iov_len = olddata.iov_len;
@ -10218,6 +10226,7 @@ static int __must_check_result mdbx_node_add_leaf(MDBX_cursor *mc,
node_size += sizeof(pgno_t);
} else if (unlikely(node_size + data->iov_len >
mc->mc_txn->mt_env->me_nodemax)) {
mdbx_cassert(mc, !F_ISSET(mc->mc_db->md_flags, MDBX_DUPSORT));
const pgno_t ovpages = OVPAGES(mc->mc_txn->mt_env, data->iov_len);
/* Put data on overflow page. */
mdbx_debug("data size is %" PRIuPTR ", node would be %" PRIuPTR