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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.
101 lines
3 KiB
C
101 lines
3 KiB
C
/* How much read-only Lisp storage a dumped Emacs needs.
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Copyright (C) 1993, 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 EMACS_PURESIZE_H
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#define EMACS_PURESIZE_H
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#include "lisp.h"
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INLINE_HEADER_BEGIN
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/* Define PURESIZE, the number of bytes of pure Lisp code to leave space for.
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At one point, this was defined in config.h, meaning that changing
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PURESIZE would make Make recompile all of Emacs. But only a few
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files actually use PURESIZE, so we split it out to its own .h file.
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Make sure to include this file after config.h, since that tells us
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whether we are running X windows, which tells us how much pure
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storage to allocate. */
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/* First define a measure of the amount of data we have. */
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/* A system configuration file may set this to request a certain extra
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amount of storage. This is a lot more update-robust that defining
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BASE_PURESIZE or even PURESIZE directly. */
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#ifndef SYSTEM_PURESIZE_EXTRA
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#define SYSTEM_PURESIZE_EXTRA 0
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#endif
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#ifndef SITELOAD_PURESIZE_EXTRA
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#define SITELOAD_PURESIZE_EXTRA 0
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#endif
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#ifndef BASE_PURESIZE
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#define BASE_PURESIZE (1800000 + SYSTEM_PURESIZE_EXTRA + SITELOAD_PURESIZE_EXTRA)
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#endif
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/* Increase BASE_PURESIZE by a ratio depending on the machine's word size. */
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#ifndef PURESIZE_RATIO
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#if EMACS_INT_MAX >> 31 != 0
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#if PTRDIFF_MAX >> 31 != 0
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#define PURESIZE_RATIO 10 / 6 /* Don't surround with `()'. */
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#else
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#define PURESIZE_RATIO 8 / 6 /* Don't surround with `()'. */
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#endif
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#else
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#define PURESIZE_RATIO 1
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#endif
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#endif
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#ifdef ENABLE_CHECKING
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/* ENABLE_CHECKING somehow increases the purespace used, probably because
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it tends to cause some macro arguments to be evaluated twice. This is
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a bug, but it's difficult to track it down. */
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#define PURESIZE_CHECKING_RATIO 12 / 10 /* Don't surround with `()'. */
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#else
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#define PURESIZE_CHECKING_RATIO 1
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#endif
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/* This is the actual size in bytes to allocate. */
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#ifndef PURESIZE
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#define PURESIZE (BASE_PURESIZE * PURESIZE_RATIO * PURESIZE_CHECKING_RATIO)
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#endif
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extern _Noreturn void pure_write_error (Lisp_Object);
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extern EMACS_INT pure[];
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/* True if PTR is pure. */
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INLINE bool
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PURE_P (void *ptr)
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{
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return (uintptr_t) (ptr) - (uintptr_t) pure <= PURESIZE;
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}
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/* Signal an error if OBJ is pure. PTR is OBJ untagged. */
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INLINE void
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CHECK_IMPURE (Lisp_Object obj, void *ptr)
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{
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if (PURE_P (ptr))
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pure_write_error (obj);
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}
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INLINE_HEADER_END
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#endif /* EMACS_PURESIZE_H */
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