ID_RESUME        3504 gc/os_dep.c        GC_mprotect_thread_notify(ID_RESUME);
ID_RESUME        3551 gc/os_dep.c                if(r == MACH_MSG_SUCCESS && (id == ID_STOP || id == ID_RESUME))
ID_RESUME        3569 gc/os_dep.c                case ID_RESUME: