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/* Heap management routines (including unexec) for GNU Emacs on Windows NT.
Copyright (C) 1994, 2001-2015 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <>.
Geoff Voelker ( 7-29-94
#ifndef NTHEAP_H_
#define NTHEAP_H_
#include <windows.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 ()
extern unsigned char *get_data_start (void);
extern unsigned char *get_data_end (void);
extern size_t reserved_heap_size;
extern BOOL using_dynamic_heap;
/* Emulation of Unix sbrk(). */
extern void *sbrk (ptrdiff_t size);
/* Initialize heap structures for sbrk on startup. */
extern void init_heap (void);
/* Round the heap to this size. */
extern void round_heap (size_t size);
/* ----------------------------------------------------------------- */
/* Useful routines for manipulating memory-mapped files. */
typedef struct file_data {
char *name;
unsigned long size;
HANDLE file;
HANDLE file_mapping;
unsigned char *file_base;
} file_data;
int open_input_file (file_data *p_file, char *name);
int open_output_file (file_data *p_file, char *name, unsigned long size);
void close_file_data (file_data *p_file);
/* Return pointer to section header for named section. */
IMAGE_SECTION_HEADER * find_section (char * name, IMAGE_NT_HEADERS * nt_header);
/* Return pointer to section header for section containing the given
relative virtual address. */
IMAGE_SECTION_HEADER * rva_to_section (DWORD_PTR rva, IMAGE_NT_HEADERS * nt_header);
#endif /* NTHEAP_H_ */
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