Factor out some vars, simplify.

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index c4a80ad..53568dc 100644 (file)
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -1993,7 +1993,7 @@ mdb_txn_reset0(MDB_txn *txn, const char *act)
 
        DPRINTF("%s txn %zu%c %p on mdbenv %p, root page %zu",
                act, txn->mt_txnid, (txn->mt_flags & MDB_TXN_RDONLY) ? 'r' : 'w',
-               (void *) txn, (void *)txn->mt_env, txn->mt_dbs[MAIN_DBI].md_root);
+               (void *) txn, (void *)env, txn->mt_dbs[MAIN_DBI].md_root);
 
        if (F_ISSET(txn->mt_flags, MDB_TXN_RDONLY)) {
                if (txn->mt_u.reader) {
@@ -2537,7 +2537,7 @@ mdb_env_read_header(MDB_env *env, MDB_meta *meta)
                }
 
                if (off == 0 || m->mm_txnid > meta->mm_txnid)
-                       memcpy(meta, m, sizeof(*m));
+                       *meta = *m;
        }
        return 0;
 }
@@ -2551,7 +2551,6 @@ static int
 mdb_env_init_meta(MDB_env *env, MDB_meta *meta)
 {
        MDB_page *p, *q;
-       MDB_meta *m;
        int rc;
        unsigned int     psize;
 
@@ -2572,17 +2571,12 @@ mdb_env_init_meta(MDB_env *env, MDB_meta *meta)
        p = calloc(2, psize);
        p->mp_pgno = 0;
        p->mp_flags = P_META;
-
-       m = METADATA(p);
-       memcpy(m, meta, sizeof(*meta));
+       *(MDB_meta *)METADATA(p) = *meta;
 
        q = (MDB_page *)((char *)p + psize);
-
        q->mp_pgno = 1;
        q->mp_flags = P_META;
-
-       m = METADATA(q);
-       memcpy(m, meta, sizeof(*meta));
+       *(MDB_meta *)METADATA(q) = *meta;
 
 #ifdef _WIN32
        {
@@ -4218,6 +4212,7 @@ mdb_ovpage_free(MDB_cursor *mc, MDB_page *mp)
        MDB_txn *txn = mc->mc_txn;
        pgno_t pg = mp->mp_pgno;
        unsigned i, ovpages = mp->mp_pages;
+       MDB_env *env = txn->mt_env;
        int rc;
 
        DPRINTF("free ov page %zu (%d)", pg, ovpages);
@@ -4226,11 +4221,11 @@ mdb_ovpage_free(MDB_cursor *mc, MDB_page *mp)
         * Not currently supported in nested txns.
         * Otherwise put it onto the list of pages we freed in this txn.
         */
-       if ((mp->mp_flags & P_DIRTY) && !txn->mt_parent && txn->mt_env->me_pghead) {
+       if ((mp->mp_flags & P_DIRTY) && !txn->mt_parent && env->me_pghead) {
                unsigned j, x;
                pgno_t *mop;
                MDB_ID2 *dl, ix, iy;
-               rc = mdb_midl_need(&txn->mt_env->me_pghead, ovpages);
+               rc = mdb_midl_need(&env->me_pghead, ovpages);
                if (rc)
                        return rc;
                /* Remove from dirty list */
@@ -4247,7 +4242,7 @@ mdb_ovpage_free(MDB_cursor *mc, MDB_page *mp)
                        }
                }
                /* Insert in me_pghead */
-               mop = txn->mt_env->me_pghead;
+               mop = env->me_pghead;
                j = mop[0] + ovpages;
                for (i = mop[0]; i && mop[i] < pg; i--)
                        mop[j--] = mop[i];
@@ -7406,7 +7401,7 @@ int mdb_drop(MDB_txn *txn, MDB_dbi dbi, int del)
 
        rc = mdb_drop0(mc, mc->mc_db->md_flags & MDB_DUPSORT);
        /* Invalidate the dropped DB's cursors */
-       for (m2 = mc->mc_txn->mt_cursors[dbi]; m2; m2 = m2->mc_next)
+       for (m2 = txn->mt_cursors[dbi]; m2; m2 = m2->mc_next)
                m2->mc_flags &= ~C_INITIALIZED;
        if (rc)
                goto leave;