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55ba8c022b
Redo src/*.h so that each include file is idempotent (that is, can be included multiple times with the latter inclusions having no effect) and standalone (that is, can be included by itself, with no include file other than config.h needed as a prerequisite). This is standard practice in GNU programs nowadays. * lwlib/lwlib-widget.h, src/buffer.h, src/category.h, src/character.h: * src/charset.h, src/coding.h, src/commands.h, src/disptab.h: * src/fontset.h, src/gnutls.h, src/indent.h, src/keymap.h, src/macros.h: * src/regex.h [emacs]: * src/syntax.h, src/systty.h, src/termhooks.h: Include lisp.h, for Lisp_Object. * src/buffer.h, src/category.h, src/cm.h, src/commands.h, src/disptab.h: * src/indent.h, src/intervals.h, src/keyboard.h, src/macros.h: * src/process.h, src/puresize.h, src/region-cache.h, src/syntax.h: * src/syssignal.h, src/sysstdio.h, src/systty.h, src/termchar.h: * src/termopts.h, src/tparam.h, src/unexec.h: Protect against multiple inclusion. * src/buffer.h: Include character.h, for STRING_CHAR. * src/emacsgtkfixed.h (struct frame): * src/fontset.h (struct face): * src/region-cache.h (struct buffer): * src/termhooks.h (struct glyph): * src/xsettings.h (struct x_display_info): Add possibly-forward decl. * src/syntax.h: Include buffer.h, for BVAR. * src/sysselect.h: Include lisp.h, for eassume. * src/termchar.h: Include <stdio.h>, for FILE. * src/widget.h: Include <X11/IntrinsicP.h>, for Widget. * src/xsettings.h: Include <X11/Xlib.h>, for XEvent.
93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/* sysselect.h - System-dependent definitions for the select function.
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Copyright (C) 1995, 2001-2015 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 SYSSELECT_H
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#define SYSSELECT_H 1
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#ifndef DOS_NT
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#include <sys/select.h>
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#endif
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#include "lisp.h"
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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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#ifndef WINDOWSNT
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INLINE_HEADER_BEGIN
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/* Check for out-of-range errors if ENABLE_CHECKING is defined. */
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INLINE void
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fd_CLR (int fd, fd_set *set)
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{
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eassume (0 <= fd && fd < FD_SETSIZE);
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FD_CLR (fd, set);
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}
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INLINE bool
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fd_ISSET (int fd, fd_set *set)
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{
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eassume (0 <= fd && fd < FD_SETSIZE);
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return FD_ISSET (fd, set) != 0;
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}
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INLINE void
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fd_SET (int fd, fd_set *set)
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{
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eassume (0 <= fd && fd < FD_SETSIZE);
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FD_SET (fd, set);
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}
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#undef FD_CLR
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#undef FD_ISSET
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#undef FD_SET
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#define FD_CLR(fd, set) fd_CLR (fd, set)
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#define FD_ISSET(fd, set) fd_ISSET (fd, set)
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#define FD_SET(fd, set) fd_SET (fd, set)
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INLINE_HEADER_END
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#endif /* !WINDOWSNT */
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#endif
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