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d486344e6f
Like EMACS_TIME, this portability layer is no longer needed, since Emacs has been using fd_set as a portability layer for some time. * sysselect.h (FD_SETSIZE): Rename from MAXDESC. All uses changed. (SELECT_TYPE): Remove. All uses changed to fd_set. (fd_set) [!FD_SET]: New typedef.
49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/* sysselect.h - System-dependent definitions for the select function.
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Copyright (C) 1995, 2001-2013 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef DOS_NT
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#include <sys/select.h>
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#endif
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/* The w32 build defines select stuff in w32.h, which is included
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where w32 needs it, but not where sysselect.h is included. The w32
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definitions in w32.h are incompatible with the below. */
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#ifndef WINDOWSNT
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#ifdef FD_SET
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#ifndef FD_SETSIZE
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#define FD_SETSIZE 64
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#endif
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#else /* no FD_SET */
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#define FD_SETSIZE 32
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typedef int fd_set;
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/* Define the macros to access a single-int bitmap of descriptors. */
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#define FD_SET(n, p) (*(p) |= (1 << (n)))
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#define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
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#define FD_ISSET(n, p) (*(p) & (1 << (n)))
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#define FD_ZERO(p) (*(p) = 0)
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#endif /* no FD_SET */
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#endif /* not WINDOWSNT */
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#if !defined (HAVE_SELECT)
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#define select sys_select
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#endif
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#ifdef MSDOS
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#define pselect sys_select
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#endif
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