concurrent root iterator
*** 131,140 **** --- 131,141 ---- // Marking bool is_object_live(uintptr_t addr) const; bool is_object_strongly_live(uintptr_t addr) const; template <bool finalizable, bool publish> void mark_object(uintptr_t addr); void mark_start(); + void mark_concurrent_roots(); void mark(); void mark_flush_and_free(Thread* thread); bool mark_end(); // Post-marking & Pre-relocation