[PATCH v3 05/15] reftable/iter: drop double-checking logic
- From
Patrick Steinhardt <ps@pks.im>
- Date
- Aug 22, 2024, 06:34 UTC
- Message-ID
- <cac08a934c58f9e31c2139251722fbff8fb84e1d.1724308389.git.ps@pks.im>
- In-Reply-To
- <cover.1724308389.git.ps@pks.im>
The filtering ref iterator can be used to only yield refs which are not in a specific skip list. This iterator has an option to double-check the results it returns, which causes us to seek the reference we are about to yield via a separate table such that we detect whether the reference that the first iterator has yielded actually exists.
The value of this is somewhat dubious, and I cannot think of any usecase where this functionality should be required. Furthermore, this option is never set in our codebase, which means that it is essentially untested. And last but not least, the `struct reftable_table` that is used to implement it is about to go away.
So while we could refactor the code to not use a `reftable_table`, it very much feels like a wasted effort. Let's just drop this code.
Signed-off-by: Patrick Steinhardt <ps@pks.im> --- reftable/iter.c | 20 -------------------- reftable/iter.h | 2 -- reftable/reader.c | 2 -- 3 files changed, 24 deletions(-)
diff --git a/reftable/iter.c b/reftable/iter.c index fddea31e517..a7484aba60d 100644 --- a/reftable/iter.c +++ b/reftable/iter.c @@ -42,26 +42,6 @@ static int filtering_ref_iterator_next(void *iter_arg, break; } - if (fri->double_check) { - struct reftable_iterator it = { NULL }; - - reftable_table_init_ref_iter(&fri->tab, &it); - - err = reftable_iterator_seek_ref(&it, ref->refname); - if (err == 0) - err = reftable_iterator_next_ref(&it, ref); - - reftable_iterator_destroy(&it); - - if (err < 0) { - break; - } - - if (err > 0) { - continue; - } - } - if (ref->value_type == REFTABLE_REF_VAL2 && (!memcmp(fri->oid.buf, ref->value.val2.target_value, fri->oid.len) || diff --git a/reftable/iter.h b/reftable/iter.h index 537431baba0..b75d7ac2ac0 100644 --- a/reftable/iter.h +++ b/reftable/iter.h @@ -18,8 +18,6 @@ license that can be found in the LICENSE file or at /* iterator that produces only ref records that point to `oid` */ struct filtering_ref_iterator { - int double_check; - struct reftable_table tab; struct strbuf oid; struct reftable_iterator it; }; diff --git a/reftable/reader.c b/reftable/reader.c index f7ae35da728..e3f58542297 100644 --- a/reftable/reader.c +++ b/reftable/reader.c @@ -735,8 +735,6 @@ static int reftable_reader_refs_for_unindexed(struct reftable_reader *r, *filter = empty; strbuf_add(&filter->oid, oid, oid_len); - reftable_table_from_reader(&filter->tab, r); - filter->double_check = 0; iterator_from_table_iter(&filter->it, ti); iterator_from_filtering_ref_iterator(it, filter);
-- 2.46.0.164.g477ce5ccd6.dirty