git/list[1] front-page[2] threads[3] people[4] search[5] about
 

[PATCH v3 11/30] lock_packed_refs(): take a `packed_ref_store *` parameter

From
Michael Haggerty <mhagger@alum.mit.edu>
Date
Jul 1, 2017, 18:30 UTC
Message-ID
<f459f865a71462d9ddac20c9d01fbb80470c24e7.1498933362.git.mhagger@alum.mit.edu>
In-Reply-To
<cover.1498933362.git.mhagger@alum.mit.edu>
It only cares about the packed-refs part of the reference store.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs/files-backend.c | 31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index 4943207098..0d8f39089f 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -80,6 +80,19 @@ static struct packed_ref_store *packed_ref_store_create(
 	return refs;
 }
 
+/*
+ * Die if refs is not the main ref store. caller is used in any
+ * necessary error messages.
+ */
+static void packed_assert_main_repository(struct packed_ref_store *refs,
+					  const char *caller)
+{
+	if (refs->store_flags & REF_STORE_MAIN)
+		return;
+
+	die("BUG: operation %s only allowed for main ref store", caller);
+}
+
 /*
  * Future: need to be in "struct repository"
  * when doing a full libification.
@@ -1334,13 +1347,13 @@ static void write_packed_entry(FILE *fh, const char *refname,
  * hold_lock_file_for_update(). Return 0 on success. On errors, set
  * errno appropriately and return a nonzero value.
  */
-static int lock_packed_refs(struct files_ref_store *refs, int flags)
+static int lock_packed_refs(struct packed_ref_store *refs, int flags)
 {
 	static int timeout_configured = 0;
 	static int timeout_value = 1000;
 	struct packed_ref_cache *packed_ref_cache;
 
-	files_assert_main_repository(refs, "lock_packed_refs");
+	packed_assert_main_repository(refs, "lock_packed_refs");
 
 	if (!timeout_configured) {
 		git_config_get_int("core.packedrefstimeout", &timeout_value);
@@ -1348,8 +1361,8 @@ static int lock_packed_refs(struct files_ref_store *refs, int flags)
 	}
 
 	if (hold_lock_file_for_update_timeout(
-			    &refs->packed_ref_store->lock,
-			    refs->packed_ref_store->path,
+			    &refs->lock,
+			    refs->path,
 			    flags, timeout_value) < 0)
 		return -1;
 
@@ -1361,9 +1374,9 @@ static int lock_packed_refs(struct files_ref_store *refs, int flags)
 	 * cache is still valid. We've just locked the file, but it
 	 * might have changed the moment *before* we locked it.
 	 */
-	validate_packed_ref_cache(refs->packed_ref_store);
+	validate_packed_ref_cache(refs);
 
-	packed_ref_cache = get_packed_ref_cache(refs->packed_ref_store);
+	packed_ref_cache = get_packed_ref_cache(refs);
 	/* Increment the reference count to prevent it from being freed: */
 	acquire_packed_ref_cache(packed_ref_cache);
 	return 0;
@@ -1560,7 +1573,7 @@ static int files_pack_refs(struct ref_store *ref_store, unsigned int flags)
 	int ok;
 	struct ref_to_prune *refs_to_prune = NULL;
 
-	lock_packed_refs(refs, LOCK_DIE_ON_ERROR);
+	lock_packed_refs(refs->packed_ref_store, LOCK_DIE_ON_ERROR);
 
 	iter = cache_ref_iterator_begin(get_loose_ref_cache(refs), NULL, 0);
 	while ((ok = ref_iterator_advance(iter)) == ITER_OK) {
@@ -1629,7 +1642,7 @@ static int repack_without_refs(struct files_ref_store *refs,
 	if (!needs_repacking)
 		return 0; /* no refname exists in packed refs */
 
-	if (lock_packed_refs(refs, 0)) {
+	if (lock_packed_refs(refs->packed_ref_store, 0)) {
 		unable_to_lock_message(refs->packed_ref_store->path, errno, err);
 		return -1;
 	}
@@ -3198,7 +3211,7 @@ static int files_initial_transaction_commit(struct ref_store *ref_store,
 		}
 	}
 
-	if (lock_packed_refs(refs, 0)) {
+	if (lock_packed_refs(refs->packed_ref_store, 0)) {
 		strbuf_addf(err, "unable to lock packed-refs file: %s",
 			    strerror(errno));
 		ret = TRANSACTION_GENERIC_ERROR;
-- 
2.11.0
Previous: Michael HaggertyNext: Michael Haggerty
Message 13 of 52 in “Create a reference backend for packed refs”
  1. 00/30 Create a reference backend for packed refsMichael Haggerty, Jul 1, 2017
  2. 01/30 t1408: add a test of stale packed refs covered by loose refsMichael Haggerty, Jul 1, 2017
  3. 03/30 packed_ref_store: new structMichael Haggerty, Jul 1, 2017
  4. 04/30 packed_ref_store: move `packed_refs_path` hereMichael Haggerty, Jul 1, 2017
  5. 02/30 add_packed_ref(): teach function to overwrite existing refsMichael Haggerty, Jul 1, 2017
  6. 06/30 clear_packed_ref_cache(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  7. 05/30 packed_ref_store: move `packed_refs_lock` member hereMichael Haggerty, Jul 1, 2017
  8. 09/30 get_packed_refs(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  9. 07/30 validate_packed_ref_cache(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  10. 12/30 commit_packed_refs(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  11. 08/30 get_packed_ref_cache(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  12. 10/30 add_packed_ref(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  13. 11/30 lock_packed_refs(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  14. 16/30 packed_peel_ref(): new function, extracted from `files_peel_ref()`Michael Haggerty, Jul 1, 2017
  15. 15/30 repack_without_refs(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  16. 14/30 get_packed_ref(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  17. 17/30 packed_ref_store: support iterationMichael Haggerty, Jul 1, 2017
  18. 19/30 packed-backend: new module for handling packed referencesMichael Haggerty, Jul 1, 2017
  19. 18/30 packed_read_raw_ref(): new function, replacing `resolve_packed_ref()`Michael Haggerty, Jul 1, 2017
  20. 22/30 commit_packed_refs(): use a staging file separate from the lockfileMichael Haggerty, Jul 1, 2017
  21. 20/30 packed_ref_store: make class into a subclass of `ref_store`Michael Haggerty, Jul 1, 2017
  22. 13/30 rollback_packed_refs(): take a `packed_ref_store *` parameterMichael Haggerty, Jul 1, 2017
  23. 23/30 packed_refs_lock(): function renamed from lock_packed_refs()Michael Haggerty, Jul 1, 2017
  24. 28/30 repack_without_refs(): don't lock or unlock the packed refsMichael Haggerty, Jul 1, 2017
  25. 29/30 t3210: add some tests of bogus packed-refs file contentsMichael Haggerty, Jul 1, 2017
  26. 26/30 clear_packed_ref_cache(): don't protest if the lock is heldMichael Haggerty, Jul 1, 2017
  27. 30/30 read_packed_refs(): die if `packed-refs` contains bogus dataMichael Haggerty, Jul 1, 2017
  28. 27/30 commit_packed_refs(): remove call to `packed_refs_unlock()`Michael Haggerty, Jul 1, 2017
  29. 21/30 commit_packed_refs(): report errors rather than dyingMichael Haggerty, Jul 1, 2017
  30. 25/30 packed_refs_unlock(), packed_refs_is_locked(): new functionsMichael Haggerty, Jul 1, 2017
  31. 24/30 packed_refs_lock(): report errors via a `struct strbuf *err`Michael Haggerty, Jul 1, 2017
  32. Jeff KingJul 5, 2017
  33. Stefan BellerJul 20, 2017
  34. Jonathan NiederJul 20, 2017
  35. packed_ref_store: handle a packed-refs file that is a symlinkMichael Haggerty, Jul 26, 2017
  36. Stefan BellerJul 27, 2017
  37. Jonathan NiederJul 27, 2017
  38. Michael HaggertyJul 27, 2017
  39. Junio C HamanoJul 27, 2017
  40. Jeff KingJul 27, 2017
  41. Junio C HamanoJul 27, 2017
  42. Michael HaggertyJul 28, 2017
  43. Ævar Arnfjörð BjarmasonMay 31, 2021
  44. Jeff KingJun 3, 2021
  45. t: use portable wrapper for readlink(1)Jeff King, Jun 3, 2021
  46. Ævar Arnfjörð BjarmasonJun 4, 2021
  47. Felipe ContrerasJun 3, 2021
  48. Jeff KingJun 3, 2021
  49. Felipe ContrerasJun 3, 2021
  50. Ævar Arnfjörð BjarmasonJun 4, 2021
  51. Felipe ContrerasJun 5, 2021
  52. Ævar Arnfjörð BjarmasonJun 4, 2021

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.