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More cursor_init cleanup

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This commit is contained in:
Howard Chu 2011-09-11 23:57:17 -07:00
parent 8acb755034
commit 25529a4c36
1 changed files with 25 additions and 36 deletions
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61
libraries/libmdb/mdb.c
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@ -839,7 +839,7 @@ static int mdb_cursor_set(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_curso
static int mdb_cursor_first(MDB_cursor *mc, MDB_val *key, MDB_val *data);
static int mdb_cursor_last(MDB_cursor *mc, MDB_val *key, MDB_val *data);
static void mdb_cursor_init(MDB_cursor *mc, MDB_txn *txn, MDB_dbi dbi);
static void mdb_cursor_init(MDB_cursor *mc, MDB_txn *txn, MDB_dbi dbi, MDB_xcursor *mx);
static void mdb_xcursor_init0(MDB_cursor *mc);
static void mdb_xcursor_init1(MDB_cursor *mc, MDB_node *node);
@ -967,7 +967,7 @@ mdb_alloc_page(MDB_cursor *mc, int num)
MDB_node *leaf;
txnid_t *kptr, oldest;
mdb_cursor_init(&m2, txn, FREE_DBI);
mdb_cursor_init(&m2, txn, FREE_DBI, NULL);
mdb_search_page(&m2, NULL, 0);
leaf = NODEPTR(m2.mc_pg[m2.mc_top], 0);
kptr = (txnid_t *)NODEKEY(leaf);
@ -1340,7 +1340,7 @@ mdb_txn_commit(MDB_txn *txn)
DPRINTF("committing txn %zu %p on mdbenv %p, root page %zu",
txn->mt_txnid, (void *)txn, (void *)env, txn->mt_dbs[MAIN_DBI].md_root);
mdb_cursor_init(&mc, txn, FREE_DBI);
mdb_cursor_init(&mc, txn, FREE_DBI, NULL);
/* should only be one record now */
if (env->me_pghead) {
@ -1410,7 +1410,7 @@ mdb_txn_commit(MDB_txn *txn)
MDB_val data;
data.mv_size = sizeof(MDB_db);
mdb_cursor_init(&mc, txn, MAIN_DBI);
mdb_cursor_init(&mc, txn, MAIN_DBI, NULL);
for (i = 2; i < txn->mt_numdbs; i++) {
if (txn->mt_dbxs[i].md_dirty) {
data.mv_data = &txn->mt_dbs[i];
@ -2619,7 +2619,7 @@ mdb_search_page(MDB_cursor *mc, MDB_val *key, int modify)
/* For sub-databases, update main root first */
if (mc->mc_dbi > MAIN_DBI && !mc->mc_dbx->md_dirty) {
MDB_cursor mc2;
mdb_cursor_init(&mc2, mc->mc_txn, MAIN_DBI);
mdb_cursor_init(&mc2, mc->mc_txn, MAIN_DBI, NULL);
rc = mdb_search_page(&mc2, &mc->mc_dbx->md_name, 1);
if (rc)
return rc;
@ -2681,13 +2681,7 @@ mdb_get(MDB_txn *txn, MDB_dbi dbi,
return EINVAL;
}
mdb_cursor_init(&mc, txn, dbi);
if (txn->mt_dbs[dbi].md_flags & MDB_DUPSORT) {
mc.mc_xcursor = &mx;
mdb_xcursor_init0(&mc);
} else {
mc.mc_xcursor = NULL;
}
mdb_cursor_init(&mc, txn, dbi, &mx);
return mdb_cursor_set(&mc, key, data, MDB_SET, &exact);
}
@ -3010,9 +3004,8 @@ set3:
}
} else {
if (mc->mc_db->md_flags & MDB_DUPSORT) {
mc->mc_xcursor->mx_cursor.mc_flags &= ~C_INITIALIZED;
}
if (mc->mc_xcursor)
mc->mc_xcursor->mx_cursor.mc_flags = 0;
if ((rc = mdb_read_data(mc->mc_txn, leaf, data)) != MDB_SUCCESS)
return rc;
}
@ -3100,6 +3093,8 @@ mdb_cursor_last(MDB_cursor *mc, MDB_val *key, MDB_val *data)
if (rc)
return rc;
} else {
if (mc->mc_xcursor)
mc->mc_xcursor->mx_cursor.mc_flags = 0;
if ((rc = mdb_read_data(mc->mc_txn, leaf, data)) != MDB_SUCCESS)
return rc;
}
@ -3229,7 +3224,7 @@ mdb_cursor_touch(MDB_cursor *mc)
if (mc->mc_dbi > MAIN_DBI && !mc->mc_dbx->md_dirty) {
MDB_cursor mc2;
mdb_cursor_init(&mc2, mc->mc_txn, MAIN_DBI);
mdb_cursor_init(&mc2, mc->mc_txn, MAIN_DBI, NULL);
rc = mdb_search_page(&mc2, &mc->mc_dbx->md_name, 1);
if (rc)
return rc;
@ -3747,7 +3742,7 @@ mdb_xcursor_init1(MDB_cursor *mc, MDB_node *node)
}
static void
mdb_cursor_init(MDB_cursor *mc, MDB_txn *txn, MDB_dbi dbi)
mdb_cursor_init(MDB_cursor *mc, MDB_txn *txn, MDB_dbi dbi, MDB_xcursor *mx)
{
mc->mc_dbi = dbi;
mc->mc_txn = txn;
@ -3755,12 +3750,20 @@ mdb_cursor_init(MDB_cursor *mc, MDB_txn *txn, MDB_dbi dbi)
mc->mc_dbx = &txn->mt_dbxs[dbi];
mc->mc_snum = 0;
mc->mc_flags = 0;
if (txn->mt_dbs[dbi].md_flags & MDB_DUPSORT) {
assert(mx != NULL);
mc->mc_xcursor = mx;
mdb_xcursor_init0(mc);
} else {
mc->mc_xcursor = NULL;
}
}
int
mdb_cursor_open(MDB_txn *txn, MDB_dbi dbi, MDB_cursor **ret)
{
MDB_cursor *mc;
MDB_xcursor *mx = NULL;
size_t size = sizeof(MDB_cursor);
if (txn == NULL || ret == NULL || !dbi || dbi >= txn->mt_numdbs)
@ -3770,12 +3773,10 @@ mdb_cursor_open(MDB_txn *txn, MDB_dbi dbi, MDB_cursor **ret)
size += sizeof(MDB_xcursor);
if ((mc = malloc(size)) != NULL) {
mdb_cursor_init(mc, txn, dbi);
if (txn->mt_dbs[dbi].md_flags & MDB_DUPSORT) {
MDB_xcursor *mx = (MDB_xcursor *)(mc + 1);
mc->mc_xcursor = mx;
mdb_xcursor_init0(mc);
mx = (MDB_xcursor *)(mc + 1);
}
mdb_cursor_init(mc, txn, dbi, mx);
} else {
return ENOMEM;
}
@ -4203,13 +4204,7 @@ mdb_del(MDB_txn *txn, MDB_dbi dbi,
return EINVAL;
}
mdb_cursor_init(&mc, txn, dbi);
if (txn->mt_dbs[dbi].md_flags & MDB_DUPSORT) {
mc.mc_xcursor = &mx;
mdb_xcursor_init0(&mc);
} else {
mc.mc_xcursor = NULL;
}
mdb_cursor_init(&mc, txn, dbi, &mx);
exact = 0;
if (data) {
@ -4524,13 +4519,7 @@ mdb_put(MDB_txn *txn, MDB_dbi dbi,
if ((flags & (MDB_NOOVERWRITE|MDB_NODUPDATA)) != flags)
return EINVAL;
mdb_cursor_init(&mc, txn, dbi);
if (txn->mt_dbs[dbi].md_flags & MDB_DUPSORT) {
mc.mc_xcursor = &mx;
mdb_xcursor_init0(&mc);
} else {
mc.mc_xcursor = NULL;
}
mdb_cursor_init(&mc, txn, dbi, &mx);
return mdb_cursor_put(&mc, key, data, flags);
}
@ -4673,7 +4662,7 @@ int mdb_open(MDB_txn *txn, const char *name, unsigned int flags, MDB_dbi *dbi)
memset(&dummy, 0, sizeof(dummy));
dummy.md_root = P_INVALID;
dummy.md_flags = flags & 0xffff;
mdb_cursor_init(&mc, txn, MAIN_DBI);
mdb_cursor_init(&mc, txn, MAIN_DBI, NULL);
rc = mdb_cursor_put(&mc, &key, &data, F_SUBDATA);
dirty = 1;
}