Rearrange files to prepare to merge into Ray.

src/common/state/object_table.h

@@ -0,0 +1,25 @@
+#include "common.h"
+#include "db.h"
+
+/* The callback that is called when the result of a lookup
+ * in the object table comes back. The callback should free
+ * the manager_vector array, but NOT the strings they are pointing to. */
+typedef void (*lookup_callback)(object_id object_id,
+                                int manager_count,
+                                const char *manager_vector[],
+                                void *context);
+
+/* Register a new object with the directory. */
+/* TODO(pcm): Retry, print for each attempt. */
+void object_table_add(db_handle *db, object_id object_id);
+
+/* Remove object from the directory. */
+void object_table_remove(db_handle *db,
+                         object_id object_id,
+                         const char *manager);
+
+/* Look up entry from the directory */
+void object_table_lookup(db_handle *db,
+                         object_id object_id,
+                         lookup_callback callback,
+                         void *context);