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[PATCH v3 3/3] reftable/stack: make segment end inclusive

From
Justin Tobler via GitGitGadget <gitgitgadget@gmail.com>
Date
Mar 29, 2024, 04:16 UTC
Message-ID
<9a33914c852a0487dbd90c83f53fa0e36414fda1.1711685809.git.gitgitgadget@gmail.com>
In-Reply-To
<pull.1683.v3.git.1711685809.gitgitgadget@gmail.com>
From: Justin Tobler <jltobler@gmail.com>

For a reftable segment, the start of the range is inclusive and the end is exclusive. In practice we increment the end when creating the compaction segment only to decrement the segment end when using it.

Simplify by making the segment end inclusive. The corresponding test, `test_suggest_compaction_segment()`, is updated to show that the segment end is now inclusive.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
---
 reftable/stack.c      | 4 ++--
 reftable/stack_test.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/reftable/stack.c b/reftable/stack.c
index e7b9a1de5a4..0973c47dd92 100644
--- a/reftable/stack.c
+++ b/reftable/stack.c
@@ -1237,7 +1237,7 @@ struct segment suggest_compaction_segment(uint64_t *sizes, size_t n)
 	 */
 	for (i = n - 1; i > 0; i--) {
 		if (sizes[i - 1] < sizes[i] * 2) {
-			seg.end = i + 1;
+			seg.end = i;
 			bytes = sizes[i];
 			break;
 		}
@@ -1291,7 +1291,7 @@ int reftable_stack_auto_compact(struct reftable_stack *st)
 		suggest_compaction_segment(sizes, st->merged->stack_len);
 	reftable_free(sizes);
 	if (segment_size(&seg) > 0)
-		return stack_compact_range_stats(st, seg.start, seg.end - 1,
+		return stack_compact_range_stats(st, seg.start, seg.end,
 						 NULL);
 
 	return 0;
diff --git a/reftable/stack_test.c b/reftable/stack_test.c
index 21541742fe5..4d7305623a0 100644
--- a/reftable/stack_test.c
+++ b/reftable/stack_test.c
@@ -723,7 +723,7 @@ static void test_suggest_compaction_segment(void)
 	struct segment min =
 		suggest_compaction_segment(sizes, ARRAY_SIZE(sizes));
 	EXPECT(min.start == 1);
-	EXPECT(min.end == 10);
+	EXPECT(min.end == 9);
 }
 
 static void test_suggest_compaction_segment_nothing(void)
-- 
gitgitgadget
Previous: Junio C HamanoNext: Junio C Hamano
Message 23 of 52 in “reftable/stack: use geometric table compaction”
  1. reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Mar 5, 2024
  2. Patrick SteinhardtMar 6, 2024
  3. Patrick SteinhardtMar 6, 2024
  4. Justin ToblerMar 21, 2024
  5. 0/3 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Mar 21, 2024
  6. 1/3 reftable/stack: add env to disable autocompactionJustin Tobler via GitGitGadget, Mar 21, 2024
  7. Patrick SteinhardtMar 22, 2024
  8. 2/3 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Mar 21, 2024
  9. Patrick SteinhardtMar 22, 2024
  10. Karthik NayakMar 27, 2024
  11. 3/3 reftable/segment: make segment end inclusiveJustin Tobler via GitGitGadget, Mar 21, 2024
  12. Patrick SteinhardtMar 22, 2024
  13. Han-Wen NienhuysApr 3, 2024
  14. Patrick SteinhardtApr 3, 2024
  15. Justin ToblerApr 3, 2024
  16. Junio C HamanoApr 3, 2024
  17. 0/3 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Mar 29, 2024
  18. 1/3 reftable/stack: add env to disable autocompactionJustin Tobler via GitGitGadget, Mar 29, 2024
  19. Junio C HamanoMar 29, 2024
  20. Junio C HamanoMar 29, 2024
  21. Patrick SteinhardtApr 2, 2024
  22. Junio C HamanoApr 2, 2024
  23. 3/3 reftable/stack: make segment end inclusiveJustin Tobler via GitGitGadget, Mar 29, 2024
  24. Junio C HamanoMar 29, 2024
  25. Patrick SteinhardtApr 2, 2024
  26. 2/3 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Mar 29, 2024
  27. Patrick SteinhardtApr 2, 2024
  28. 0/2 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Apr 3, 2024
  29. 1/2 reftable/stack: add env to disable autocompactionJustin Tobler via GitGitGadget, Apr 3, 2024
  30. 2/2 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Apr 3, 2024
  31. Patrick SteinhardtApr 3, 2024
  32. Karthik NayakApr 3, 2024
  33. Junio C HamanoApr 3, 2024
  34. 0/3 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Apr 4, 2024
  35. 1/3 reftable/stack: allow disabling of auto-compactionJustin Tobler via GitGitGadget, Apr 4, 2024
  36. Patrick SteinhardtApr 8, 2024
  37. 2/3 reftable/stack: add env to disable autocompactionJustin Tobler via GitGitGadget, Apr 4, 2024
  38. Patrick SteinhardtApr 8, 2024
  39. Junio C HamanoApr 8, 2024
  40. 3/3 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Apr 4, 2024
  41. Patrick SteinhardtApr 8, 2024
  42. Justin ToblerApr 8, 2024
  43. 0/3 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Apr 8, 2024
  44. 1/3 reftable/stack: expose option to disable auto-compactionJustin Tobler via GitGitGadget, Apr 8, 2024
  45. 2/3 reftable/stack: add env to disable autocompactionJustin Tobler via GitGitGadget, Apr 8, 2024
  46. 3/3 reftable/stack: use geometric table compactionJustin Tobler via GitGitGadget, Apr 8, 2024
  47. Patrick SteinhardtApr 8, 2024
  48. Junio C HamanoApr 8, 2024
  49. Junio C HamanoApr 3, 2024
  50. Patrick SteinhardtApr 3, 2024
  51. Patrick SteinhardtApr 4, 2024
  52. Justin ToblerApr 4, 2024

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