This commit was manufactured by cvs2svn to create branch 'chise-r21-4-18'.

[chise/xemacs-chise.git-] / src / ntheap.h

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+/* Heap management routines (including unexec) for XEmacs on Windows NT.
+   Copyright (C) 1994 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to the Free
+Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+
+   Geoff Voelker (voelker@cs.washington.edu) 7-29-94 */
+
+/* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
+/* Synced with FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
+
+#ifndef INCLUDED_ntheap_h_
+#define INCLUDED_ntheap_h_
+
+#include "syswindows.h"
+
+/*
+ * Heap related stuff.
+ */
+#define get_reserved_heap_size()       reserved_heap_size
+#define get_committed_heap_size()      (get_data_end () - get_data_start ())
+#define get_heap_start()               get_data_start ()
+#define get_heap_end()                 get_data_end ()
+#define get_page_size()                        sysinfo_cache.dwPageSize
+#define get_allocation_unit()          sysinfo_cache.dwAllocationGranularity
+#define get_processor_type()           sysinfo_cache.dwProcessorType
+#define get_nt_major_version()         nt_major_version
+#define get_nt_minor_version()         nt_minor_version
+
+extern unsigned char *get_data_start();
+extern unsigned char *get_data_end();
+extern unsigned long  data_region_size;
+extern unsigned long  reserved_heap_size;
+extern SYSTEM_INFO    sysinfo_cache;
+extern int           nt_major_version;
+extern int           nt_minor_version;
+
+/* To prevent zero-initialized variables from being placed into the bss
+   section, use non-zero values to represent an uninitialized state.  */
+#define UNINIT_PTR ((unsigned char*) 0xF0A0F0A0)
+#define UNINIT_LONG (0xF0A0F0A0L)
+
+/* Emulation of Unix sbrk().  */
+extern void *sbrk (unsigned long size);
+
+/* Recreate the heap created during dumping.  */
+extern void recreate_heap (char *executable_path);
+
+/* Round the heap to this size.  */
+extern void round_heap (unsigned long size);
+
+/* Load in the dumped .bss section.  */
+extern void read_in_bss (char *name);
+
+/* Map in the dumped heap.  */
+extern void map_in_heap (char *name);
+
+/* Cache system info, e.g., the NT page size.  */
+extern void cache_system_info (void);
+
+/* Round ADDRESS up to be aligned with ALIGN.  */
+extern unsigned char *round_to_next (unsigned char *address, 
+                                    unsigned long align);
+
+#endif /* INCLUDED_ntheap_h_ */