NGX_THREAD_EXIT  1172 os/unix/ngx_process_cycle.c             if (ngx_threads[i].state < NGX_THREAD_EXIT) {
NGX_THREAD_EXIT  1181 os/unix/ngx_process_cycle.c             if (ngx_threads[i].state == NGX_THREAD_EXIT) {
NGX_THREAD_EXIT  1255 os/unix/ngx_process_cycle.c             thr->state = NGX_THREAD_EXIT;