#define BLOCKING 1024
-#define DEFINE_ALLOCATOR(name, type) \
-static unsigned int name##_allocs; \
-void *alloc_##name##_node(void) \
-{ \
- static int nr; \
- static type *block; \
- void *ret; \
- \
- if (!nr) { \
- nr = BLOCKING; \
- block = xmalloc(BLOCKING * sizeof(type)); \
- } \
- nr--; \
- name##_allocs++; \
- ret = block++; \
- memset(ret, 0, sizeof(type)); \
- return ret; \
-}
-
union any_object {
struct object object;
struct blob blob;
struct tag tag;
};
-DEFINE_ALLOCATOR(blob, struct blob)
-DEFINE_ALLOCATOR(tree, struct tree)
-DEFINE_ALLOCATOR(commit, struct commit)
-DEFINE_ALLOCATOR(tag, struct tag)
-DEFINE_ALLOCATOR(object, union any_object)
+struct alloc_state {
+ int count; /* total number of nodes allocated */
+ int nr; /* number of nodes left in current allocation */
+ void *p; /* first free node in current allocation */
+};
+
+static inline void *alloc_node(struct alloc_state *s, size_t node_size)
+{
+ void *ret;
+
+ if (!s->nr) {
+ s->nr = BLOCKING;
+ s->p = xmalloc(BLOCKING * node_size);
+ }
+ s->nr--;
+ s->count++;
+ ret = s->p;
+ s->p = (char *)s->p + node_size;
+ memset(ret, 0, node_size);
+ return ret;
+}
+
+static struct alloc_state blob_state;
+void *alloc_blob_node(void)
+{
+ struct blob *b = alloc_node(&blob_state, sizeof(struct blob));
+ b->object.type = OBJ_BLOB;
+ return b;
+}
+
+static struct alloc_state tree_state;
+void *alloc_tree_node(void)
+{
+ struct tree *t = alloc_node(&tree_state, sizeof(struct tree));
+ t->object.type = OBJ_TREE;
+ return t;
+}
+
+static struct alloc_state tag_state;
+void *alloc_tag_node(void)
+{
+ struct tag *t = alloc_node(&tag_state, sizeof(struct tag));
+ t->object.type = OBJ_TAG;
+ return t;
+}
+
+static struct alloc_state object_state;
+void *alloc_object_node(void)
+{
+ struct object *obj = alloc_node(&object_state, sizeof(union any_object));
+ obj->type = OBJ_NONE;
+ return obj;
+}
+
+static struct alloc_state commit_state;
+
+unsigned int alloc_commit_index(void)
+{
+ static unsigned int count;
+ return count++;
+}
+
+void *alloc_commit_node(void)
+{
+ struct commit *c = alloc_node(&commit_state, sizeof(struct commit));
+ c->object.type = OBJ_COMMIT;
+ c->index = alloc_commit_index();
+ return c;
+}
static void report(const char *name, unsigned int count, size_t size)
{
name, count, (uintmax_t) size);
}
-#define REPORT(name) \
- report(#name, name##_allocs, name##_allocs * sizeof(struct name) >> 10)
+#define REPORT(name, type) \
+ report(#name, name##_state.count, name##_state.count * sizeof(type) >> 10)
void alloc_report(void)
{
- REPORT(blob);
- REPORT(tree);
- REPORT(commit);
- REPORT(tag);
+ REPORT(blob, struct blob);
+ REPORT(tree, struct tree);
+ REPORT(commit, struct commit);
+ REPORT(tag, struct tag);
+ REPORT(object, union any_object);
}