X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=object.c;h=9adc87479bde2a0b2a0a0335aed12a9f485facff;hb=e968751573a4ded76201a0e4414ec36649a92dda;hp=1577f74281be776082fecebdf8947bcb8c7c6802;hpb=8fc11b5aa98540f7caab87e22e5aae63512893a2;p=git.git

diff --git a/object.c b/object.c
index 1577f742..9adc8747 100644
--- a/object.c
+++ b/object.c
@@ -6,30 +6,34 @@
 #include "tag.h"
 
 struct object **objs;
-int nr_objs;
-static int obj_allocs;
+static int nr_objs;
+int obj_allocs;
 
-int track_object_refs = 1;
+int track_object_refs = 0;
+
+static int hashtable_index(const unsigned char *sha1)
+{
+	unsigned int i;
+	memcpy(&i, sha1, sizeof(unsigned int));
+	return (int)(i % obj_allocs);
+}
 
 static int find_object(const unsigned char *sha1)
 {
-	int first = 0, last = nr_objs;
-
-        while (first < last) {
-                int next = (first + last) / 2;
-                struct object *obj = objs[next];
-                int cmp;
-
-                cmp = memcmp(sha1, obj->sha1, 20);
-                if (!cmp)
-                        return next;
-                if (cmp < 0) {
-                        last = next;
-                        continue;
-                }
-                first = next+1;
-        }
-        return -first-1;
+	int i;
+
+	if (!objs)
+		return -1;
+
+	i = hashtable_index(sha1);
+	while (objs[i]) {
+		if (memcmp(sha1, objs[i]->sha1, 20) == 0)
+			return i;
+		i++;
+		if (i == obj_allocs)
+			i = 0;
+	}
+	return -1 - i;
 }
 
 struct object *lookup_object(const unsigned char *sha1)
@@ -42,7 +46,7 @@ struct object *lookup_object(const unsigned char *sha1)
 
 void created_object(const unsigned char *sha1, struct object *obj)
 {
-	int pos = find_object(sha1);
+	int pos;
 
 	obj->parsed = 0;
 	memcpy(obj->sha1, sha1, 20);
@@ -50,18 +54,27 @@ void created_object(const unsigned char *sha1, struct object *obj)
 	obj->refs = NULL;
 	obj->used = 0;
 
-	if (pos >= 0)
-		die("Inserting %s twice\n", sha1_to_hex(sha1));
-	pos = -pos-1;
-
-	if (obj_allocs == nr_objs) {
-		obj_allocs = alloc_nr(obj_allocs);
+	if (obj_allocs - 1 <= nr_objs * 2) {
+		int i, count = obj_allocs;
+		obj_allocs = (obj_allocs < 32 ? 32 : 2 * obj_allocs);
 		objs = xrealloc(objs, obj_allocs * sizeof(struct object *));
+		memset(objs + count, 0, (obj_allocs - count)
+				* sizeof(struct object *));
+		for (i = 0; i < obj_allocs; i++)
+			if (objs[i]) {
+				int j = find_object(objs[i]->sha1);
+				if (j != i) {
+					j = -1 - j;
+					objs[j] = objs[i];
+					objs[i] = NULL;
+				}
+			}
 	}
 
-	/* Insert it into the right place */
-	memmove(objs + pos + 1, objs + pos, (nr_objs - pos) * 
-		sizeof(struct object *));
+	pos = find_object(sha1);
+	if (pos >= 0)
+		die("Inserting %s twice\n", sha1_to_hex(sha1));
+	pos = -pos-1;
 
 	objs[pos] = obj;
 	nr_objs++;
@@ -72,8 +85,7 @@ struct object_refs *alloc_object_refs(unsigned count)
 	struct object_refs *refs;
 	size_t size = sizeof(*refs) + count*sizeof(struct object *);
 
-	refs = xmalloc(size);
-	memset(refs, 0, size);
+	refs = xcalloc(1, size);
 	refs->count = count;
 	return refs;
 }
@@ -165,8 +177,7 @@ struct object *lookup_unknown_object(const unsigned char *sha1)
 {
 	struct object *obj = lookup_object(sha1);
 	if (!obj) {
-		union any_object *ret = xmalloc(sizeof(*ret));
-		memset(ret, 0, sizeof(*ret));
+		union any_object *ret = xcalloc(1, sizeof(*ret));
 		created_object(sha1, &ret->object);
 		ret->object.type = NULL;
 		return &ret->object;
@@ -183,15 +194,18 @@ struct object *parse_object(const unsigned char *sha1)
 		struct object *obj;
 		if (check_sha1_signature(sha1, buffer, size, type) < 0)
 			printf("sha1 mismatch %s\n", sha1_to_hex(sha1));
-		if (!strcmp(type, "blob")) {
+		if (!strcmp(type, blob_type)) {
 			struct blob *blob = lookup_blob(sha1);
 			parse_blob_buffer(blob, buffer, size);
 			obj = &blob->object;
-		} else if (!strcmp(type, "tree")) {
+		} else if (!strcmp(type, tree_type)) {
 			struct tree *tree = lookup_tree(sha1);
-			parse_tree_buffer(tree, buffer, size);
 			obj = &tree->object;
-		} else if (!strcmp(type, "commit")) {
+			if (!tree->object.parsed) {
+				parse_tree_buffer(tree, buffer, size);
+				buffer = NULL;
+			}
+		} else if (!strcmp(type, commit_type)) {
 			struct commit *commit = lookup_commit(sha1);
 			parse_commit_buffer(commit, buffer, size);
 			if (!commit->buffer) {
@@ -199,7 +213,7 @@ struct object *parse_object(const unsigned char *sha1)
 				buffer = NULL;
 			}
 			obj = &commit->object;
-		} else if (!strcmp(type, "tag")) {
+		} else if (!strcmp(type, tag_type)) {
 			struct tag *tag = lookup_tag(sha1);
 			parse_tag_buffer(tag, buffer, size);
 			obj = &tag->object;