X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=object-refs.c;h=98ea10005a851c3879c6e65929e3e34068dc9e8b;hb=bd45fec8397f1f0804db1d18af7193be323b0326;hp=a7d49c60d7176fbc90635e07dc2ce658125edafc;hpb=160a59f326d55970f8a038ef635c662b9c648c75;p=git.git

diff --git a/object-refs.c b/object-refs.c
index a7d49c60d..98ea10005 100644
--- a/object-refs.c
+++ b/object-refs.c
@@ -12,38 +12,36 @@ static unsigned int hash_obj(struct object *obj, unsigned int n)
 	return hash % n;
 }
 
+static void insert_ref_hash(struct object_refs *ref, struct object_refs **hash, unsigned int size)
+{
+	int j = hash_obj(ref->base, size);
+
+	while (hash[j]) {
+		j++;
+		if (j >= size)
+			j = 0;
+	}
+	hash[j] = ref;
+}
+
 static void grow_refs_hash(void)
 {
 	int i;
 	int new_hash_size = (refs_hash_size + 1000) * 3 / 2;
 	struct object_refs **new_hash;
 
-	new_hash = calloc(new_hash_size, sizeof(struct object_refs *));
+	new_hash = xcalloc(new_hash_size, sizeof(struct object_refs *));
 	for (i = 0; i < refs_hash_size; i++) {
-		int j;
 		struct object_refs *ref = refs_hash[i];
 		if (!ref)
 			continue;
-		j = hash_obj(ref->base, new_hash_size);
-		new_hash[j] = ref;
+		insert_ref_hash(ref, new_hash, new_hash_size);
 	}
 	free(refs_hash);
 	refs_hash = new_hash;
 	refs_hash_size = new_hash_size;
 }
 
-static void insert_ref_hash(struct object_refs *ref)
-{
-	int j = hash_obj(ref->base, refs_hash_size);
-
-	while (refs_hash[j]) {
-		j++;
-		if (j >= refs_hash_size)
-			j = 0;
-	}
-	refs_hash[j] = ref;
-}
-
 static void add_object_refs(struct object *obj, struct object_refs *ref)
 {
 	int nr = nr_object_refs + 1;
@@ -51,15 +49,19 @@ static void add_object_refs(struct object *obj, struct object_refs *ref)
 	if (nr > refs_hash_size * 2 / 3)
 		grow_refs_hash();
 	ref->base = obj;
-	insert_ref_hash(ref);
+	insert_ref_hash(ref, refs_hash, refs_hash_size);
 	nr_object_refs = nr;
 }
 
 struct object_refs *lookup_object_refs(struct object *obj)
 {
-	int j = hash_obj(obj, refs_hash_size);
 	struct object_refs *ref;
+	int j;
 
+	/* nothing to lookup */
+	if (!refs_hash_size)
+		return NULL;
+	j = hash_obj(obj, refs_hash_size);
 	while ((ref = refs_hash[j]) != NULL) {
 		if (ref->base == obj)
 			break;
@@ -127,9 +129,6 @@ void mark_reachable(struct object *obj, unsigned int mask)
 
 	if (!track_object_refs)
 		die("cannot do reachability with object refs turned off");
-	/* nothing to lookup */
-	if (!refs_hash_size)
-		return;
 	/* If we've been here already, don't bother */
 	if (obj->flags & mask)
 		return;