/* sysselect.h - System-dependent definitions for the select function. Copyright (C) 1995 Free Software Foundation, Inc. This file is part of GNU Emacs. GNU Emacs 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, or (at your option) any later version. GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_SYS_SELECT #include <sys/select.h> #endif #ifdef FD_SET #ifdef FD_SETSIZE #define MAXDESC FD_SETSIZE #else #define MAXDESC 64 #endif #define SELECT_TYPE fd_set #else /* no FD_SET */ #define MAXDESC 32 #define SELECT_TYPE int /* Define the macros to access a single-int bitmap of descriptors. */ #define FD_SET(n, p) (*(p) |= (1 << (n))) #define FD_CLR(n, p) (*(p) &= ~(1 << (n))) #define FD_ISSET(n, p) (*(p) & (1 << (n))) #define FD_ZERO(p) (*(p) = 0) #endif /* no FD_SET */ #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) #define select sys_select #endif