[PATCH v5 15/30] fast-import.c: change update_branch to use ref transactions
Change update_branch() to use ref transactions for updates.
Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
---
fast-import.c | 21 +++++++++++++--------
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/fast-import.c b/fast-import.c
index fb4738d..35de36a 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -1678,36 +1678,41 @@ found_entry:
static int update_branch(struct branch *b)
{
static const char *msg = "fast-import";
- struct ref_lock *lock;
+ struct ref_transaction *transaction;
unsigned char old_sha1[20];
+ struct strbuf err = STRBUF_INIT;
if (is_null_sha1(b->sha1))
return 0;
if (read_ref(b->name, old_sha1))
hashclr(old_sha1);
- lock = lock_any_ref_for_update(b->name, old_sha1, 0, NULL);
- if (!lock)
- return error("Unable to lock %s", b->name);
if (!force_update && !is_null_sha1(old_sha1)) {
struct commit *old_cmit, *new_cmit;
old_cmit = lookup_commit_reference_gently(old_sha1, 0);
new_cmit = lookup_commit_reference_gently(b->sha1, 0);
if (!old_cmit || !new_cmit) {
- unlock_ref(lock);
return error("Branch %s is missing commits.", b->name);
}
if (!in_merge_bases(old_cmit, new_cmit)) {
- unlock_ref(lock);
warning("Not updating %s"
" (new tip %s does not contain %s)",
b->name, sha1_to_hex(b->sha1), sha1_to_hex(old_sha1));
return -1;
}
}
- if (write_ref_sha1(lock, b->sha1, msg) < 0)
- return error("Unable to update %s", b->name);
+ transaction = ref_transaction_begin();
+ if ((!transaction ||
+ ref_transaction_update(transaction, b->name, b->sha1, old_sha1,
+ 0, 1)) ||
+ (ref_transaction_commit(transaction, msg, &err) &&
+ !(transaction = NULL))) {
+ ref_transaction_rollback(transaction);
+ error("Unable to update branch %s: %s", b->name, err.buf);
+ strbuf_release(&err);
+ return -1;
+ }
return 0;
}
--
1.9.1.532.gf8485a6
Ronnie Sahlberg <sahlberg@google.com>