1 /* Static heap allocation for GNU Emacs.
2
3 Copyright 2016-2023 Free Software Foundation, Inc.
4
5 This file is part of GNU Emacs.
6
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
11
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
19
20 #include <stddef.h>
21 #include "lisp.h"
22
23 /* Size of the static heap. Guess a value that is probably too large,
24 by up to a factor of four or so. Typically the unused part is not
25 paged in and so does not cost much. */
26 enum { STATIC_HEAP_SIZE = sizeof (Lisp_Object) << 24 };
27
28 extern char bss_sbrk_buffer[STATIC_HEAP_SIZE];
29 extern char *max_bss_sbrk_ptr;
30 extern void *bss_sbrk (ptrdiff_t);