From: Michael Haggerty <mhagger@alum.mit.edu>
To: Junio C Hamano <gitster@pobox.com>
Cc: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
"Stefan Beller" <sbeller@google.com>, "Jeff King" <peff@peff.net>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"David Turner" <novalis@novalis.org>,
"Brandon Williams" <bmwill@google.com>,
git@vger.kernel.org, "Michael Haggerty" <mhagger@alum.mit.edu>
Subject: [PATCH v3 02/30] add_packed_ref(): teach function to overwrite existing refs
Date: Sat, 1 Jul 2017 20:30:40 +0200 [thread overview]
Message-ID: <7f88f3ecbbaccc6d5f517494a1c33c063967b8ba.1498933362.git.mhagger@alum.mit.edu> (raw)
In-Reply-To: <cover.1498933362.git.mhagger@alum.mit.edu>
Teach `add_packed_ref()` to overwrite an existing entry if one already
exists for the specified `refname`. This means that we can call it
from `files_pack_refs()`, thereby reducing the amount that the latter
function needs to know about the internals of packed-reference
handling.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
refs/files-backend.c | 40 ++++++++++++++++++----------------------
1 file changed, 18 insertions(+), 22 deletions(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index b040bb3b0a..87cecde231 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -413,15 +413,16 @@ static struct ref_dir *get_packed_refs(struct files_ref_store *refs)
}
/*
- * Add a reference to the in-memory packed reference cache. This may
- * only be called while the packed-refs file is locked (see
- * lock_packed_refs()). To actually write the packed-refs file, call
- * commit_packed_refs().
+ * Add or overwrite a reference in the in-memory packed reference
+ * cache. This may only be called while the packed-refs file is locked
+ * (see lock_packed_refs()). To actually write the packed-refs file,
+ * call commit_packed_refs().
*/
static void add_packed_ref(struct files_ref_store *refs,
const char *refname, const struct object_id *oid)
{
- struct packed_ref_cache *packed_ref_cache = get_packed_ref_cache(refs);
+ struct ref_dir *packed_refs;
+ struct ref_entry *packed_entry;
if (!is_lock_file_locked(&refs->packed_refs_lock))
die("BUG: packed refs not locked");
@@ -429,8 +430,17 @@ static void add_packed_ref(struct files_ref_store *refs,
if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL))
die("Reference has invalid format: '%s'", refname);
- add_ref_entry(get_packed_ref_dir(packed_ref_cache),
- create_ref_entry(refname, oid, REF_ISPACKED));
+ packed_refs = get_packed_refs(refs);
+ packed_entry = find_ref_entry(packed_refs, refname);
+ if (packed_entry) {
+ /* Overwrite the existing entry: */
+ oidcpy(&packed_entry->u.value.oid, oid);
+ packed_entry->flag = REF_ISPACKED;
+ oidclr(&packed_entry->u.value.peeled);
+ } else {
+ packed_entry = create_ref_entry(refname, oid, REF_ISPACKED);
+ add_ref_entry(packed_refs, packed_entry);
+ }
}
/*
@@ -1526,12 +1536,10 @@ static int files_pack_refs(struct ref_store *ref_store, unsigned int flags)
files_downcast(ref_store, REF_STORE_WRITE | REF_STORE_ODB,
"pack_refs");
struct ref_iterator *iter;
- struct ref_dir *packed_refs;
int ok;
struct ref_to_prune *refs_to_prune = NULL;
lock_packed_refs(refs, LOCK_DIE_ON_ERROR);
- packed_refs = get_packed_refs(refs);
iter = cache_ref_iterator_begin(get_loose_ref_cache(refs), NULL, 0);
while ((ok = ref_iterator_advance(iter)) == ITER_OK) {
@@ -1540,8 +1548,6 @@ static int files_pack_refs(struct ref_store *ref_store, unsigned int flags)
* in the packed ref cache. If the reference should be
* pruned, also add it to refs_to_prune.
*/
- struct ref_entry *packed_entry;
-
if (!should_pack_ref(iter->refname, iter->oid, iter->flags,
flags))
continue;
@@ -1552,17 +1558,7 @@ static int files_pack_refs(struct ref_store *ref_store, unsigned int flags)
* we don't copy the peeled status, because we want it
* to be re-peeled.
*/
- packed_entry = find_ref_entry(packed_refs, iter->refname);
- if (packed_entry) {
- /* Overwrite existing packed entry with info from loose entry */
- packed_entry->flag = REF_ISPACKED;
- oidcpy(&packed_entry->u.value.oid, iter->oid);
- } else {
- packed_entry = create_ref_entry(iter->refname, iter->oid,
- REF_ISPACKED);
- add_ref_entry(packed_refs, packed_entry);
- }
- oidclr(&packed_entry->u.value.peeled);
+ add_packed_ref(refs, iter->refname, iter->oid);
/* Schedule the loose reference for pruning if requested. */
if ((flags & PACK_REFS_PRUNE)) {
--
2.11.0
next prev parent reply other threads:[~2017-07-01 18:31 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-01 18:30 [PATCH v3 00/30] Create a reference backend for packed refs Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 01/30] t1408: add a test of stale packed refs covered by loose refs Michael Haggerty
2017-07-01 18:30 ` Michael Haggerty [this message]
2017-07-01 18:30 ` [PATCH v3 03/30] packed_ref_store: new struct Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 04/30] packed_ref_store: move `packed_refs_path` here Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 05/30] packed_ref_store: move `packed_refs_lock` member here Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 06/30] clear_packed_ref_cache(): take a `packed_ref_store *` parameter Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 07/30] validate_packed_ref_cache(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 08/30] get_packed_ref_cache(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 09/30] get_packed_refs(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 10/30] add_packed_ref(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 11/30] lock_packed_refs(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 12/30] commit_packed_refs(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 13/30] rollback_packed_refs(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 14/30] get_packed_ref(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 15/30] repack_without_refs(): " Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 16/30] packed_peel_ref(): new function, extracted from `files_peel_ref()` Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 17/30] packed_ref_store: support iteration Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 18/30] packed_read_raw_ref(): new function, replacing `resolve_packed_ref()` Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 19/30] packed-backend: new module for handling packed references Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 20/30] packed_ref_store: make class into a subclass of `ref_store` Michael Haggerty
2017-07-01 18:30 ` [PATCH v3 21/30] commit_packed_refs(): report errors rather than dying Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 22/30] commit_packed_refs(): use a staging file separate from the lockfile Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 23/30] packed_refs_lock(): function renamed from lock_packed_refs() Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 24/30] packed_refs_lock(): report errors via a `struct strbuf *err` Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 25/30] packed_refs_unlock(), packed_refs_is_locked(): new functions Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 26/30] clear_packed_ref_cache(): don't protest if the lock is held Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 27/30] commit_packed_refs(): remove call to `packed_refs_unlock()` Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 28/30] repack_without_refs(): don't lock or unlock the packed refs Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 29/30] t3210: add some tests of bogus packed-refs file contents Michael Haggerty
2017-07-01 18:31 ` [PATCH v3 30/30] read_packed_refs(): die if `packed-refs` contains bogus data Michael Haggerty
2017-07-05 9:12 ` [PATCH v3 00/30] Create a reference backend for packed refs Jeff King
2017-07-20 23:05 ` Stefan Beller
2017-07-20 23:20 ` Jonathan Nieder
2017-07-26 23:39 ` [PATCH] packed_ref_store: handle a packed-refs file that is a symlink Michael Haggerty
2017-07-27 0:15 ` Stefan Beller
2017-07-27 0:18 ` Jonathan Nieder
2017-07-27 11:12 ` Michael Haggerty
2017-07-27 17:19 ` Junio C Hamano
2017-07-27 18:28 ` Jeff King
2017-07-27 19:40 ` Junio C Hamano
2017-07-28 6:07 ` Michael Haggerty
2021-05-31 14:18 ` Ævar Arnfjörð Bjarmason
2021-06-03 19:39 ` Jeff King
2021-06-03 19:58 ` [PATCH] t: use portable wrapper for readlink(1) Jeff King
2021-06-04 21:09 ` Ævar Arnfjörð Bjarmason
2021-06-03 20:23 ` [PATCH] packed_ref_store: handle a packed-refs file that is a symlink Felipe Contreras
2021-06-03 21:08 ` Jeff King
2021-06-03 22:25 ` Felipe Contreras
2021-06-04 21:37 ` Ævar Arnfjörð Bjarmason
2021-06-05 1:07 ` Felipe Contreras
2021-06-04 21:12 ` Ævar Arnfjörð Bjarmason
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