Implement reference counting for git_objects

All `git_object` instances looked up from the repository are reference
counted. User is expected to use the new `git_object_close` when an
object is no longer needed to force freeing it.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/src/repository.h b/src/repository.h
index c8e4186b3..2e8d187b0 100644
--- a/src/repository.h
+++ b/src/repository.h
@@ -15,6 +15,8 @@
 #define GIT_OBJECTS_DIR "objects/"
 #define GIT_INDEX_FILE "index"
 
+#define GIT_OBJECT_INCREF(ob) ++(((git_object *)(ob))->refcount)
+
 typedef struct {
 	git_rawobj raw;
 	void *write_ptr;
@@ -26,13 +28,16 @@ struct git_object {
 	git_oid id;
 	git_repository *repo;
 	git_odb_source source;
-	int in_memory:1, modified:1;
+	unsigned short refcount;
+	short in_memory:1, modified:1;
 };
 
 struct git_repository {
 	git_odb *db;
 	git_index *index;
+
 	git_hashtable *objects;
+	git_vector memory_objects;
 
 	git_refcache references;
 
@@ -47,6 +52,10 @@ struct git_repository {
 int git_object__source_open(git_object *object);
 void git_object__source_close(git_object *object);
 
+/* fully free the object; internal method, do not
+ * export */
+void git_object__free(git_object *object);
+
 int git__source_printf(git_odb_source *source, const char *format, ...);
 int git__source_write(git_odb_source *source, const void *bytes, size_t len);