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[PATCH v2 27/29] pack-objects: fix buggy warning about threads

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
May 13, 2017, 23:15 UTC
Message-ID
<20170513231509.7834-28-avarab@gmail.com>
In-Reply-To
<20170513231509.7834-1-avarab@gmail.com>

Fix a buggy warning about threads under NO_PTHREADS=YesPlease. Due to re-using the delta_search_threads variable for both the state of the "pack.threads" config & the --threads option, setting "pack.threads" but not supplying --threads would trigger the warning for both "pack.threads" & --threads.

Solve this bug by resetting the delta_search_threads variable in git_pack_config(), it might then be set by --threads again and be subsequently warned about, as the test I'm changing here asserts.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 builtin/pack-objects.c | 4 +++-
 t/t5300-pack-object.sh | 3 +--
 2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 0fe35d1b5a..f1baf05dfe 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -2472,8 +2472,10 @@ static int git_pack_config(const char *k, const char *v, void *cb)
 			die("invalid number of threads specified (%d)",
 			    delta_search_threads);
 #ifdef NO_PTHREADS
-		if (delta_search_threads != 1)
+		if (delta_search_threads != 1) {
 			warning("no threads support, ignoring %s", k);
+			delta_search_threads = 0;
+		}
 #endif
 		return 0;
 	}
diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh
index 1629fa80b0..0ec25c4966 100755
--- a/t/t5300-pack-object.sh
+++ b/t/t5300-pack-object.sh
@@ -445,8 +445,7 @@ test_expect_success !PTHREADS,C_LOCALE_OUTPUT 'pack-objects --threads=N or pack.
 	git -c pack.threads=2 pack-objects --stdout --all </dev/null >/dev/null 2>err &&
 	cat err &&
 	grep ^warning: err >warnings &&
-	test_line_count = 2 warnings &&
-	grep -F "no threads support, ignoring --threads" err &&
+	test_line_count = 1 warnings &&
 	grep -F "no threads support, ignoring pack.threads" err &&
 	git -c pack.threads=2 pack-objects --threads=4 --stdout --all </dev/null >/dev/null 2>err &&
 	grep ^warning: err >warnings &&

-- 
2.11.0
Previous: Ævar Arnfjörð BjarmasonNext: Junio C Hamano
Message 37 of 42 in “Easy to review grep & pre-PCRE changes”
  1. 00/29 Easy to review grep & pre-PCRE changesÆvar Arnfjörð Bjarmason, May 13, 2017
  2. 01/29 Makefile & configure: reword inaccurate comment about PCREÆvar Arnfjörð Bjarmason, May 13, 2017
  3. 02/29 grep & rev-list doc: stop promising libpcre for --perl-regexpÆvar Arnfjörð Bjarmason, May 13, 2017
  4. 04/29 log: add exhaustive tests for pattern style options & configÆvar Arnfjörð Bjarmason, May 13, 2017
  5. Junio C HamanoMay 15, 2017
  6. Ævar Arnfjörð BjarmasonMay 15, 2017
  7. Junio C HamanoMay 16, 2017
  8. 05/29 grep: add a test asserting that --perl-regexp dies when !PCREÆvar Arnfjörð Bjarmason, May 13, 2017
  9. 03/29 test-lib: rename the LIBPCRE prerequisite to PCREÆvar Arnfjörð Bjarmason, May 13, 2017
  10. 06/29 grep: add a test for backreferences in PCRE patternsÆvar Arnfjörð Bjarmason, May 13, 2017
  11. 07/29 grep: change non-ASCII -i test to stop using --debugÆvar Arnfjörð Bjarmason, May 13, 2017
  12. 08/29 grep: add tests for --threads=N and grep.threadsÆvar Arnfjörð Bjarmason, May 13, 2017
  13. 09/29 grep: amend submodule recursion test for regex engine testingÆvar Arnfjörð Bjarmason, May 13, 2017
  14. 10/29 grep: add tests for grep pattern types being passed to submodulesÆvar Arnfjörð Bjarmason, May 13, 2017
  15. 11/29 grep: add a test helper function for less verbose -f \0 testsÆvar Arnfjörð Bjarmason, May 13, 2017
  16. 12/29 grep: prepare for testing binary regexes containing rx metacharactersÆvar Arnfjörð Bjarmason, May 13, 2017
  17. 13/29 grep: add tests to fix blind spots with \0 patternsÆvar Arnfjörð Bjarmason, May 13, 2017
  18. 14/29 perf: add a GIT_PERF_MAKE_COMMAND for when *_MAKE_OPTS won't doÆvar Arnfjörð Bjarmason, May 13, 2017
  19. 15/29 perf: emit progress output when unpacking & buildingÆvar Arnfjörð Bjarmason, May 13, 2017
  20. 16/29 perf: add a performance comparison test of grep -G, -E and -PÆvar Arnfjörð Bjarmason, May 13, 2017
  21. 18/29 grep: catch a missing enum in switch statementÆvar Arnfjörð Bjarmason, May 13, 2017
  22. Junio C HamanoMay 15, 2017
  23. Ævar Arnfjörð BjarmasonMay 15, 2017
  24. 17/29 perf: add a performance comparison of fixed-string grepÆvar Arnfjörð Bjarmason, May 13, 2017
  25. 20/29 grep: remove redundant `regflags &= ~REG_EXTENDED` assignmentsÆvar Arnfjörð Bjarmason, May 13, 2017
  26. Junio C HamanoMay 15, 2017
  27. Ævar Arnfjörð BjarmasonMay 15, 2017
  28. 19/29 grep: remove redundant regflags assignment under PCREÆvar Arnfjörð Bjarmason, May 13, 2017
  29. 21/29 grep: factor test for \0 in grep patterns into a functionÆvar Arnfjörð Bjarmason, May 13, 2017
  30. Junio C HamanoMay 15, 2017
  31. Ævar Arnfjörð BjarmasonMay 15, 2017
  32. 22/29 grep: change the internal PCRE macro names to be PCRE1Ævar Arnfjörð Bjarmason, May 13, 2017
  33. 23/29 grep: change internal *pcre* variable & function names to be *pcre1*Ævar Arnfjörð Bjarmason, May 13, 2017
  34. 25/29 test-lib: add a PTHREADS prerequisiteÆvar Arnfjörð Bjarmason, May 13, 2017
  35. 26/29 pack-objects & index-pack: add test for --threads warningÆvar Arnfjörð Bjarmason, May 13, 2017
  36. 24/29 grep: move is_fixed() earlier to avoid forward declarationÆvar Arnfjörð Bjarmason, May 13, 2017
  37. 27/29 pack-objects: fix buggy warning about threadsÆvar Arnfjörð Bjarmason, May 13, 2017
  38. Junio C HamanoMay 15, 2017
  39. Ævar Arnfjörð BjarmasonMay 15, 2017
  40. 28/29 grep: given --threads with NO_PTHREADS=YesPlease, warnÆvar Arnfjörð Bjarmason, May 13, 2017
  41. 29/29 grep: assert that threading is enabled when calling grep_{lock,unlock}Ævar Arnfjörð Bjarmason, May 13, 2017
  42. Junio C HamanoMay 15, 2017

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