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[PATCH v2 14/14] repository.c: free the "path cache" in repo_clear()

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
Mar 4, 2022, 18:32 UTC
Message-ID
<patch-v2-14.14-d70a4394f2b-20220304T182902Z-avarab@gmail.com>
In-Reply-To
<cover-v2-00.14-00000000000-20220304T182902Z-avarab@gmail.com>

The "struct path_cache" added in 102de880d24 (path.c: migrate global git_path_* to take a repository argument, 2018-05-17) is only used directly by code in repository.[ch] (but populated in path.[ch]).

Let's move this code to repository.[ch], and stop leaking this memory when we run repo_clear(). To avoid the cast change it from a "const char *" to a "char *".

This also removes the "PATH_CACHE_INIT" macro, which has never been used for anything. For the "struct repository" we already make a hard assumption that it (and "the_repository") can be identically initialized by making it a "static" variable, so making use of a "PATH_CACHE_INIT" somewhere would have been confusing.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 path.h       | 14 --------------
 repository.c | 16 ++++++++++++++++
 repository.h | 14 +++++++++++++-
 3 files changed, 29 insertions(+), 15 deletions(-)
diff --git a/path.h b/path.h
index b68691a86b8..0a59c85a62e 100644
--- a/path.h
+++ b/path.h
@@ -169,20 +169,6 @@ void report_linked_checkout_garbage(void);
 		return r->cached_paths.var; \
 	}
 
-struct path_cache {
-	const char *squash_msg;
-	const char *merge_msg;
-	const char *merge_rr;
-	const char *merge_mode;
-	const char *merge_head;
-	const char *merge_autostash;
-	const char *auto_merge;
-	const char *fetch_head;
-	const char *shallow;
-};
-
-#define PATH_CACHE_INIT { 0 }
-
 const char *git_path_squash_msg(struct repository *r);
 const char *git_path_merge_msg(struct repository *r);
 const char *git_path_merge_rr(struct repository *r);
diff --git a/repository.c b/repository.c
index 34610c5a33e..9b86f3f1214 100644
--- a/repository.c
+++ b/repository.c
@@ -240,6 +240,20 @@ int repo_submodule_init(struct repository *subrepo,
 	return ret;
 }
 
+static void repo_clear_path_cache(struct repo_path_cache *cache)
+{
+	FREE_AND_NULL(cache->squash_msg);
+	FREE_AND_NULL(cache->squash_msg);
+	FREE_AND_NULL(cache->merge_msg);
+	FREE_AND_NULL(cache->merge_rr);
+	FREE_AND_NULL(cache->merge_mode);
+	FREE_AND_NULL(cache->merge_head);
+	FREE_AND_NULL(cache->merge_autostash);
+	FREE_AND_NULL(cache->auto_merge);
+	FREE_AND_NULL(cache->fetch_head);
+	FREE_AND_NULL(cache->shallow);
+}
+
 void repo_clear(struct repository *repo)
 {
 	FREE_AND_NULL(repo->gitdir);
@@ -280,6 +294,8 @@ void repo_clear(struct repository *repo)
 		remote_state_clear(repo->remote_state);
 		FREE_AND_NULL(repo->remote_state);
 	}
+
+	repo_clear_path_cache(&repo->cached_paths);
 }
 
 int repo_read_index(struct repository *repo)
diff --git a/repository.h b/repository.h
index ca837cb9e91..e29f361703d 100644
--- a/repository.h
+++ b/repository.h
@@ -44,6 +44,18 @@ struct repo_settings {
 	int core_multi_pack_index;
 };
 
+struct repo_path_cache {
+	char *squash_msg;
+	char *merge_msg;
+	char *merge_rr;
+	char *merge_mode;
+	char *merge_head;
+	char *merge_autostash;
+	char *auto_merge;
+	char *fetch_head;
+	char *shallow;
+};
+
 struct repository {
 	/* Environment */
 	/*
@@ -82,7 +94,7 @@ struct repository {
 	/*
 	 * Contains path to often used file names.
 	 */
-	struct path_cache cached_paths;
+	struct repo_path_cache cached_paths;
 
 	/*
 	 * Path to the repository's graft file.
-- 
2.35.1.1248.gb68c9165ad8
Previous: Ævar Arnfjörð BjarmasonNext: Ævar Arnfjörð Bjarmason
Message 34 of 37 in “tree-wide: small fixes for memory leaks”
  1. 00/14 tree-wide: small fixes for memory leaksÆvar Arnfjörð Bjarmason, Mar 2, 2022
  2. 01/14 index-pack: fix memory leaksÆvar Arnfjörð Bjarmason, Mar 2, 2022
  3. Derrick StoleeMar 2, 2022
  4. Ævar Arnfjörð BjarmasonMar 3, 2022
  5. 02/14 merge-base: free() allocated "struct commit **" listÆvar Arnfjörð Bjarmason, Mar 2, 2022
  6. 03/14 diff.c: free "buf" in diff_words_flush()Ævar Arnfjörð Bjarmason, Mar 2, 2022
  7. 05/14 remote-curl.c: free memory in cmd_main()Ævar Arnfjörð Bjarmason, Mar 2, 2022
  8. 04/14 urlmatch.c: add and use a *_release() functionÆvar Arnfjörð Bjarmason, Mar 2, 2022
  9. 06/14 bundle: call strvec_clear() on allocated strvecÆvar Arnfjörð Bjarmason, Mar 2, 2022
  10. 08/14 submodule--helper: fix trivial leak in module_add()Ævar Arnfjörð Bjarmason, Mar 2, 2022
  11. 07/14 transport: stop needlessly copying bundle header referencesÆvar Arnfjörð Bjarmason, Mar 2, 2022
  12. Derrick StoleeMar 2, 2022
  13. Ævar Arnfjörð BjarmasonMar 3, 2022
  14. 09/14 commit-graph: fix memory leak in misused string_list APIÆvar Arnfjörð Bjarmason, Mar 2, 2022
  15. 10/14 commit-graph: stop fill_oids_from_packs() progress on error and free()Ævar Arnfjörð Bjarmason, Mar 2, 2022
  16. 11/14 lockfile API users: simplify and don't leak "path"Ævar Arnfjörð Bjarmason, Mar 2, 2022
  17. 12/14 range-diff: plug memory leak in common invocationÆvar Arnfjörð Bjarmason, Mar 2, 2022
  18. 14/14 repository.c: free the "path cache" in repo_clear()Ævar Arnfjörð Bjarmason, Mar 2, 2022
  19. 13/14 range-diff: plug memory leak in read_patches()Ævar Arnfjörð Bjarmason, Mar 2, 2022
  20. Derrick StoleeMar 2, 2022
  21. 00/14 tree-wide: small fixes for memory leaksÆvar Arnfjörð Bjarmason, Mar 4, 2022
  22. 01/14 index-pack: fix memory leaksÆvar Arnfjörð Bjarmason, Mar 4, 2022
  23. 02/14 merge-base: free() allocated "struct commit **" listÆvar Arnfjörð Bjarmason, Mar 4, 2022
  24. 03/14 diff.c: free "buf" in diff_words_flush()Ævar Arnfjörð Bjarmason, Mar 4, 2022
  25. 04/14 urlmatch.c: add and use a *_release() functionÆvar Arnfjörð Bjarmason, Mar 4, 2022
  26. 05/14 remote-curl.c: free memory in cmd_main()Ævar Arnfjörð Bjarmason, Mar 4, 2022
  27. 06/14 bundle: call strvec_clear() on allocated strvecÆvar Arnfjörð Bjarmason, Mar 4, 2022
  28. 07/14 transport: stop needlessly copying bundle header referencesÆvar Arnfjörð Bjarmason, Mar 4, 2022
  29. Derrick StoleeMar 4, 2022
  30. 09/14 commit-graph: fix memory leak in misused string_list APIÆvar Arnfjörð Bjarmason, Mar 4, 2022
  31. 12/14 range-diff: plug memory leak in common invocationÆvar Arnfjörð Bjarmason, Mar 4, 2022
  32. 13/14 range-diff: plug memory leak in read_patches()Ævar Arnfjörð Bjarmason, Mar 4, 2022
  33. 11/14 lockfile API users: simplify and don't leak "path"Ævar Arnfjörð Bjarmason, Mar 4, 2022
  34. 14/14 repository.c: free the "path cache" in repo_clear()Ævar Arnfjörð Bjarmason, Mar 4, 2022
  35. 10/14 commit-graph: stop fill_oids_from_packs() progress on error and free()Ævar Arnfjörð Bjarmason, Mar 4, 2022
  36. 08/14 submodule--helper: fix trivial leak in module_add()Ævar Arnfjörð Bjarmason, Mar 4, 2022
  37. Derrick StoleeMar 4, 2022

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