[PATCH v4 2/4] box: generalize memtx_multikey_tree methods
Kirill Shcherbatov
kshcherbatov at tarantool.org
Wed Jul 24 10:36:08 MSK 2019
Updated multikey memtx_tree methods a bit to make possible to
reuse them in case of functional indexes. The BPS_TREE_IDENTICAL
is only used in bps_tree_delete_identical (when BPS_TREE_NO_DEBUG
macro is defined) therefore it may be reused to delete an
identical entry in case of functional index in further patches.
Needed for #1260
---
src/box/memtx_tree.c | 29 ++++++++++++++++++-----------
1 file changed, 18 insertions(+), 11 deletions(-)
diff --git a/src/box/memtx_tree.c b/src/box/memtx_tree.c
index 3edf94044..5f5848c69 100644
--- a/src/box/memtx_tree.c
+++ b/src/box/memtx_tree.c
@@ -73,7 +73,7 @@ static bool
memtx_tree_data_identical(const struct memtx_tree_data *a,
const struct memtx_tree_data *b)
{
- return a->tuple == b->tuple && a->hint == b->hint;
+ return a->tuple == b->tuple;
}
#define BPS_TREE_NAME memtx_tree
@@ -85,6 +85,7 @@ memtx_tree_data_identical(const struct memtx_tree_data *a,
tuple_compare_with_key((&a)->tuple, (&a)->hint, (b)->key,\
(b)->part_count, (b)->hint, arg)
#define BPS_TREE_IDENTICAL(a, b) memtx_tree_data_identical(&a, &b)
+#define BPS_TREE_NO_DEBUG 1
#define bps_tree_elem_t struct memtx_tree_data
#define bps_tree_key_t struct memtx_tree_key_data *
#define bps_tree_arg_t struct key_def *
@@ -97,6 +98,7 @@ memtx_tree_data_identical(const struct memtx_tree_data *a,
#undef BPS_TREE_COMPARE
#undef BPS_TREE_COMPARE_KEY
#undef BPS_TREE_IDENTICAL
+#undef BPS_TREE_NO_DEBUG
#undef bps_tree_elem_t
#undef bps_tree_key_t
#undef bps_tree_arg_t
@@ -591,13 +593,15 @@ memtx_tree_index_replace(struct index *base, struct tuple *old_tuple,
static int
memtx_tree_index_replace_multikey_one(struct memtx_tree_index *index,
struct tuple *old_tuple, struct tuple *new_tuple,
- enum dup_replace_mode mode, int multikey_idx,
- struct tuple **replaced_tuple)
+ enum dup_replace_mode mode, hint_t hint,
+ struct memtx_tree_data *replaced_data,
+ bool *is_multikey_conflict)
{
struct memtx_tree_data new_data, dup_data;
new_data.tuple = new_tuple;
- new_data.hint = multikey_idx;
+ new_data.hint = hint;
dup_data.tuple = NULL;
+ *is_multikey_conflict = false;
if (memtx_tree_insert(&index->tree, new_data, &dup_data) != 0) {
diag_set(OutOfMemory, MEMTX_EXTENT_SIZE, "memtx_tree_index",
"replace");
@@ -610,7 +614,7 @@ memtx_tree_index_replace_multikey_one(struct memtx_tree_index *index,
* times, the previous key occurrence is pushed
* out of the index.
*/
- dup_data.tuple = NULL;
+ *is_multikey_conflict = true;
} else if ((errcode = replace_check_dup(old_tuple, dup_data.tuple,
mode)) != 0) {
/* Rollback replace. */
@@ -624,7 +628,7 @@ memtx_tree_index_replace_multikey_one(struct memtx_tree_index *index,
}
return -1;
}
- *replaced_tuple = dup_data.tuple;
+ *replaced_data = dup_data;
return 0;
}
@@ -681,16 +685,19 @@ memtx_tree_index_replace_multikey(struct index *base, struct tuple *old_tuple,
tuple_multikey_count(new_tuple, cmp_def);
for (; (uint32_t) multikey_idx < multikey_count;
multikey_idx++) {
- struct tuple *replaced_tuple;
+ bool is_multikey_conflict;
+ struct memtx_tree_data replaced_data;
err = memtx_tree_index_replace_multikey_one(index,
old_tuple, new_tuple, mode,
- multikey_idx, &replaced_tuple);
+ multikey_idx, &replaced_data,
+ &is_multikey_conflict);
if (err != 0)
break;
- if (replaced_tuple != NULL) {
+ if (replaced_data.tuple != NULL &&
+ !is_multikey_conflict) {
assert(*result == NULL ||
- *result == replaced_tuple);
- *result = replaced_tuple;
+ *result == replaced_data.tuple);
+ *result = replaced_data.tuple;
}
}
if (err != 0) {
--
2.22.0
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