writev            278 os/unix/ngx_darwin_sendfile_chain.c             rc = writev(c->fd, header.elts, header.nelts);
writev            219 os/unix/ngx_files.c         n = writev(file->fd, vec.elts, vec.nelts);
writev            324 os/unix/ngx_freebsd_sendfile_chain.c             rc = writev(c->fd, header.elts, header.nelts);
writev            291 os/unix/ngx_linux_sendfile_chain.c             rc = writev(c->fd, header.elts, header.nelts);
writev            108 os/unix/ngx_writev_chain.c         n = writev(c->fd, vec.elts, vec.nelts);