1 /* Heap management routines (including unexec) for XEmacs on Windows NT.
2 Copyright (C) 1994 Free Software Foundation, Inc.
4 This file is part of XEmacs.
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to the Free
18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
21 Geoff Voelker (voelker@cs.washington.edu) 7-29-94 */
23 /* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
24 /* Synced with FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
26 #ifndef INCLUDED_ntheap_h_
27 #define INCLUDED_ntheap_h_
29 #include "syswindows.h"
34 #define get_reserved_heap_size() reserved_heap_size
35 #define get_committed_heap_size() (get_data_end () - get_data_start ())
36 #define get_heap_start() get_data_start ()
37 #define get_heap_end() get_data_end ()
38 #define get_page_size() sysinfo_cache.dwPageSize
39 #define get_allocation_unit() sysinfo_cache.dwAllocationGranularity
40 #define get_processor_type() sysinfo_cache.dwProcessorType
41 #define get_nt_major_version() nt_major_version
42 #define get_nt_minor_version() nt_minor_version
44 extern unsigned char *get_data_start();
45 extern unsigned char *get_data_end();
46 extern unsigned long data_region_size;
47 extern unsigned long reserved_heap_size;
48 extern SYSTEM_INFO sysinfo_cache;
49 extern int nt_major_version;
50 extern int nt_minor_version;
52 /* To prevent zero-initialized variables from being placed into the bss
53 section, use non-zero values to represent an uninitialized state. */
54 #define UNINIT_PTR ((unsigned char*) 0xF0A0F0A0)
55 #define UNINIT_LONG (0xF0A0F0A0L)
57 /* Emulation of Unix sbrk(). */
58 extern void *sbrk (unsigned long size);
60 /* Recreate the heap created during dumping. */
61 extern void recreate_heap (char *executable_path);
63 /* Round the heap to this size. */
64 extern void round_heap (unsigned long size);
66 /* Load in the dumped .bss section. */
67 extern void read_in_bss (char *name);
69 /* Map in the dumped heap. */
70 extern void map_in_heap (char *name);
72 /* Cache system info, e.g., the NT page size. */
73 extern void cache_system_info (void);
75 /* Round ADDRESS up to be aligned with ALIGN. */
76 extern unsigned char *round_to_next (unsigned char *address,
79 #endif /* INCLUDED_ntheap_h_ */