listen            622 modules/generators/mod_cgid.c     if (listen(sd, DEFAULT_CGID_LISTENBACKLOG) < 0) {
listen            156 srclib/apr/network_io/os2/sockets.c     if (listen(sock->socketdes, backlog) == -1)
listen            170 srclib/apr/network_io/unix/sockets.c     if (listen(sock->socketdes, backlog) == -1)
listen            218 srclib/apr/network_io/win32/sockets.c     if (listen(sock->socketdes, backlog) == SOCKET_ERROR)