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[PATCH 05/13] reftable/reader: inline `reader_seek_internal()`

From
Patrick Steinhardt <ps@pks.im>
Date
May 8, 2024, 11:03 UTC
Message-ID
<4d498ef3426877c703bababaa743dd5613ba5839.1715166175.git.ps@pks.im>
In-Reply-To
<cover.1715166175.git.ps@pks.im>

We have both `reader_seek()` and `reader_seek_internal()`, where the former function only exists so that we can exit early in case the given table has no records of the sought-after type.

Merge these two functions into one.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
 reftable/reader.c | 34 ++++++++++++----------------------
 1 file changed, 12 insertions(+), 22 deletions(-)
diff --git a/reftable/reader.c b/reftable/reader.c
index b210753441..c3541e2c43 100644
--- a/reftable/reader.c
+++ b/reftable/reader.c
@@ -573,21 +573,25 @@ static int table_iter_seek_indexed(struct table_iter *ti,
 	return err;
 }
 
-static int reader_seek_internal(struct reftable_reader *r,
-				struct reftable_iterator *it,
-				struct reftable_record *rec)
+static int reader_seek(struct reftable_reader *r, struct reftable_iterator *it,
+		       struct reftable_record *rec)
 {
-	struct reftable_reader_offsets *offs =
-		reader_offsets_for(r, reftable_record_type(rec));
-	uint64_t idx = offs->index_offset;
+	uint8_t typ = reftable_record_type(rec);
+	struct reftable_reader_offsets *offs = reader_offsets_for(r, typ);
 	struct table_iter ti = TABLE_ITER_INIT, *p;
 	int err;
 
-	err = table_iter_seek_start(&ti, r, reftable_record_type(rec), !!idx);
+	if (!offs->is_present) {
+		iterator_set_empty(it);
+		return 0;
+	}
+
+	err = table_iter_seek_start(&ti, r, reftable_record_type(rec),
+				    !!offs->index_offset);
 	if (err < 0)
 		goto out;
 
-	if (idx)
+	if (offs->index_offset)
 		err = table_iter_seek_indexed(&ti, rec);
 	else
 		err = table_iter_seek_linear(&ti, rec);
@@ -604,20 +608,6 @@ static int reader_seek_internal(struct reftable_reader *r,
 	return err;
 }
 
-static int reader_seek(struct reftable_reader *r, struct reftable_iterator *it,
-		       struct reftable_record *rec)
-{
-	uint8_t typ = reftable_record_type(rec);
-
-	struct reftable_reader_offsets *offs = reader_offsets_for(r, typ);
-	if (!offs->is_present) {
-		iterator_set_empty(it);
-		return 0;
-	}
-
-	return reader_seek_internal(r, it, rec);
-}
-
 int reftable_reader_seek_ref(struct reftable_reader *r,
 			     struct reftable_iterator *it, const char *name)
 {
-- 
2.45.0
Previous: Patrick SteinhardtNext: Patrick Steinhardt
Message 6 of 50 in “reftable: prepare for re-seekable iterators”
  1. 00/13 reftable: prepare for re-seekable iteratorsPatrick Steinhardt, May 8, 2024
  2. 01/13 reftable/block: use `size_t` to track restart point indexPatrick Steinhardt, May 8, 2024
  3. 02/13 reftable/reader: avoid copying index iteratorPatrick Steinhardt, May 8, 2024
  4. 03/13 reftable/reader: unify indexed and linear seekingPatrick Steinhardt, May 8, 2024
  5. 04/13 reftable/reader: separate concerns of table iter and reftable readerPatrick Steinhardt, May 8, 2024
  6. 05/13 reftable/reader: inline `reader_seek_internal()`Patrick Steinhardt, May 8, 2024
  7. 06/13 reftable/reader: set up the reader when initializing table iteratorPatrick Steinhardt, May 8, 2024
  8. 07/13 reftable/merged: split up initialization and seeking of recordsPatrick Steinhardt, May 8, 2024
  9. Justin ToblerMay 10, 2024
  10. Patrick SteinhardtMay 13, 2024
  11. 08/13 reftable/merged: simplify indices for subiteratorsPatrick Steinhardt, May 8, 2024
  12. Justin ToblerMay 10, 2024
  13. Patrick SteinhardtMay 13, 2024
  14. 09/13 reftable/generic: move seeking of records into the iteratorPatrick Steinhardt, May 8, 2024
  15. Justin ToblerMay 10, 2024
  16. Patrick SteinhardtMay 13, 2024
  17. 10/13 reftable/generic: adapt interface to allow reuse of iteratorsPatrick Steinhardt, May 8, 2024
  18. 11/13 reftable/reader: adapt interface to allow reuse of iteratorsPatrick Steinhardt, May 8, 2024
  19. Justin ToblerMay 10, 2024
  20. Patrick SteinhardtMay 13, 2024
  21. 12/13 reftable/stack: provide convenience functions to create iteratorsPatrick Steinhardt, May 8, 2024
  22. 13/13 reftable/merged: adapt interface to allow reuse of iteratorsPatrick Steinhardt, May 8, 2024
  23. Junio C HamanoMay 8, 2024
  24. Junio C HamanoMay 9, 2024
  25. Patrick SteinhardtMay 10, 2024
  26. Junio C HamanoMay 10, 2024
  27. Patrick SteinhardtMay 10, 2024
  28. Junio C HamanoMay 10, 2024
  29. 00/13 reftable: prepare for re-seekable iteratorsPatrick Steinhardt, May 13, 2024
  30. 01/13 reftable/block: use `size_t` to track restart point indexPatrick Steinhardt, May 13, 2024
  31. Karthik NayakMay 21, 2024
  32. Patrick SteinhardtMay 22, 2024
  33. 02/13 reftable/reader: avoid copying index iteratorPatrick Steinhardt, May 13, 2024
  34. 03/13 reftable/reader: unify indexed and linear seekingPatrick Steinhardt, May 13, 2024
  35. Karthik NayakMay 21, 2024
  36. Patrick SteinhardtMay 22, 2024
  37. Karthik NayakMay 22, 2024
  38. 04/13 reftable/reader: separate concerns of table iter and reftable readerPatrick Steinhardt, May 13, 2024
  39. 05/13 reftable/reader: inline `reader_seek_internal()`Patrick Steinhardt, May 13, 2024
  40. 06/13 reftable/reader: set up the reader when initializing table iteratorPatrick Steinhardt, May 13, 2024
  41. 07/13 reftable/merged: split up initialization and seeking of recordsPatrick Steinhardt, May 13, 2024
  42. 08/13 reftable/merged: simplify indices for subiteratorsPatrick Steinhardt, May 13, 2024
  43. 09/13 reftable/generic: move seeking of records into the iteratorPatrick Steinhardt, May 13, 2024
  44. 10/13 reftable/generic: adapt interface to allow reuse of iteratorsPatrick Steinhardt, May 13, 2024
  45. 11/13 reftable/reader: adapt interface to allow reuse of iteratorsPatrick Steinhardt, May 13, 2024
  46. 12/13 reftable/stack: provide convenience functions to create iteratorsPatrick Steinhardt, May 13, 2024
  47. 13/13 reftable/merged: adapt interface to allow reuse of iteratorsPatrick Steinhardt, May 13, 2024
  48. Justin ToblerMay 15, 2024
  49. Karthik NayakMay 21, 2024
  50. Patrick SteinhardtMay 22, 2024

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