// fd_set.cc // robert - programme du robot 2005. {{{ // // Copyright (C) 2005 Nicolas Schodet // // Robot APB Team/Efrei 2005. // Web: http://assos.efrei.fr/robot/ // Email: robot AT efrei DOT fr // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // // }}} #include "fd_set.hh" #include "utils/errno_exception.hh" /// Wait for an read event or timeout in milliseconds, return true on read /// event. bool FdSet::wait (int timeout/*-1*/) { int r; if (timeout == -1) { // Without timeout. r = select (FD_SETSIZE, get (), 0, 0, 0); } else { // With timeout. struct timeval tv; tv.tv_sec = timeout / 1000; tv.tv_usec = (timeout % 1000) * 1000; r = select (FD_SETSIZE, get (), 0, 0, &tv); } if (r == -1) // Error. throw errno_exception (errno); else return r != 0; }