rd 66 http/modules/ngx_http_stub_status_module.c ngx_atomic_int_t ap, hn, ac, rq, rd, wr; rd 107 http/modules/ngx_http_stub_status_module.c rd = *ngx_stat_reading; rd 118 http/modules/ngx_http_stub_status_module.c rd, wr, ac - (rd + wr));