[PATCH 12/31] refs.c: track the refnames we are deleting in the transaction structure

[Ronnie Sahlberg <sahlberg@google.com>]

Track the names of the refs we are deleting in the ref_transaction structure
instead of building an array of names during _commit.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
---
 refs.c | 35 +++++++++++++++++++++++------------
 1 file changed, 23 insertions(+), 12 deletions(-)

diff --git a/refs.c b/refs.c
index 58bbf1b..cc31efe 100644
--- a/refs.c
+++ b/refs.c
@@ -3299,6 +3299,8 @@ struct ref_transaction {
 	size_t alloc;
 	size_t nr;
 	enum ref_transaction_status status;
+	const char **delnames;
+	int delnum;
 };
 
 struct ref_transaction *transaction_begin(void)
@@ -3306,6 +3308,15 @@ struct ref_transaction *transaction_begin(void)
 	return xcalloc(1, sizeof(struct ref_transaction));
 }
 
+static void add_delname(struct ref_transaction *transaction,
+			const char *refname)
+{
+	transaction->delnames = xrealloc(transaction->delnames,
+					 ++transaction->delnum *
+					 sizeof(const char *));
+	transaction->delnames[transaction->delnum - 1] = xstrdup(refname);
+}
+
 void transaction_free(struct ref_transaction *transaction)
 {
 	int i;
@@ -3319,6 +3330,9 @@ void transaction_free(struct ref_transaction *transaction)
 		free(transaction->updates[i]);
 	}
 	free(transaction->updates);
+	for (i = 0; i < transaction->delnum; i++)
+		free((char *)transaction->delnames[i]);
+	free((char *)transaction->delnames);
 	free(transaction);
 }
 
@@ -3518,8 +3532,7 @@ static int ref_update_reject_duplicates(struct ref_update **updates, int n,
 int transaction_commit(struct ref_transaction *transaction,
 			   struct strbuf *err)
 {
-	int ret = 0, delnum = 0, i;
-	const char **delnames;
+	int ret = 0, i;
 	int n = transaction->nr;
 	struct ref_update **updates = transaction->updates;
 
@@ -3531,9 +3544,6 @@ int transaction_commit(struct ref_transaction *transaction,
 		return 0;
 	}
 
-	/* Allocate work space */
-	delnames = xmalloc(sizeof(*delnames) * n);
-
 	/* Copy, sort, and reject duplicate refs */
 	qsort(updates, n, sizeof(*updates), ref_update_compare);
 	ret = ref_update_reject_duplicates(updates, n, err);
@@ -3546,7 +3556,7 @@ int transaction_commit(struct ref_transaction *transaction,
 		if (update->update_type != UPDATE_SHA1)
 			continue;
 		if (update->flags & REF_ISPACKONLY)
-			delnames[delnum++] = update->refname;
+			add_delname(transaction, update->refname);
 	}
 
 	/* Acquire all ref locks while verifying old values */
@@ -3564,7 +3574,8 @@ int transaction_commit(struct ref_transaction *transaction,
 						    NULL),
 						   update->flags,
 						   &update->type,
-						   delnames, delnum);
+						   transaction->delnames,
+						   transaction->delnum);
 		if (!update->lock) {
 			if (err)
 				strbuf_addf(err, "Cannot lock the ref '%s'.",
@@ -3631,7 +3642,8 @@ int transaction_commit(struct ref_transaction *transaction,
 		if (update->lock) {
 			ret |= delete_ref_loose(update->lock, update->type);
 			if (!(update->flags & REF_ISPRUNING))
-				delnames[delnum++] = update->lock->ref_name;
+				add_delname(transaction,
+					    update->lock->ref_name);
 		}
 	}
 
@@ -3677,9 +3689,9 @@ int transaction_commit(struct ref_transaction *transaction,
 		}
 	}
 
-	ret |= repack_without_refs(delnames, delnum);
-	for (i = 0; i < delnum; i++)
-		unlink_or_warn(git_path("logs/%s", delnames[i]));
+	ret |= repack_without_refs(transaction->delnames, transaction->delnum);
+	for (i = 0; i < transaction->delnum; i++)
+		unlink_or_warn(git_path("logs/%s", transaction->delnames[i]));
 	clear_loose_ref_cache(&ref_cache);
 
 cleanup:
@@ -3701,7 +3713,6 @@ cleanup:
 	for (i = 0; i < n; i++)
 		if (updates[i]->lock)
 			unlock_ref(updates[i]->lock);
-	free(delnames);
 	return ret;
 }
 
-- 
2.0.0.rc3.506.g3739a35