wr                 66 http/modules/ngx_http_stub_status_module.c     ngx_atomic_int_t   ap, hn, ac, rq, rd, wr;
wr                108 http/modules/ngx_http_stub_status_module.c     wr = *ngx_stat_writing;
wr                118 http/modules/ngx_http_stub_status_module.c                           rd, wr, ac - (rd + wr));