src/w32heap.h

/* Heap management routines (including unexec) for GNU Emacs on Windows NT.
   Copyright (C) 1994, 2001-2014 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
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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

   Geoff Voelker (voelker@cs.washington.edu)			     7-29-94
*/

#ifndef NTHEAP_H_
#define NTHEAP_H_

#include <windows.h>

/*
 * Heap related stuff.
 */

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;

extern void *mmap_realloc (void **, size_t);
extern void  mmap_free (void **);
extern void *mmap_alloc (void **, size_t);

extern void report_temacs_memory_usage (void);

/* Emulation of Unix sbrk().  */
extern void *sbrk (ptrdiff_t size);

/* Initialize heap structures for sbrk on startup.  */
extern void init_heap (void);

/* ----------------------------------------------------------------- */
/* 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_ */
Commit	Line	Data
	1	/* Heap management routines (including unexec) for GNU Emacs on Windows NT.
	2	Copyright (C) 1994, 2001-2014 Free Software Foundation, Inc.
	3
	4	This file is part of GNU Emacs.
	5
	6	GNU Emacs is free software: you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation, either version 3 of the License, or
	9	(at your option) any later version.
	10
	11	GNU Emacs is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
	18
	19	Geoff Voelker (voelker@cs.washington.edu) 7-29-94
	20	*/
	21
	22	#ifndef NTHEAP_H_
	23	#define NTHEAP_H_
	24
	25	#include <windows.h>
	26
	27	/*
	28	* Heap related stuff.
	29	*/
	30
	31	extern unsigned char *get_data_start (void);
	32	extern unsigned char *get_data_end (void);
	33	extern size_t reserved_heap_size;
	34	extern BOOL using_dynamic_heap;
	35
	36	extern void mmap_realloc (void *, size_t);
	37	extern void mmap_free (void **);
	38	extern void mmap_alloc (void *, size_t);
	39
	40	extern void report_temacs_memory_usage (void);
	41
	42	/* Emulation of Unix sbrk(). */
	43	extern void *sbrk (ptrdiff_t size);
	44
	45	/* Initialize heap structures for sbrk on startup. */
	46	extern void init_heap (void);
	47
	48	/* ----------------------------------------------------------------- */
	49	/* Useful routines for manipulating memory-mapped files. */
	50
	51	typedef struct file_data {
	52	char *name;
	53	unsigned long size;
	54	HANDLE file;
	55	HANDLE file_mapping;
	56	unsigned char *file_base;
	57	} file_data;
	58
	59	int open_input_file (file_data p_file, char name);
	60	int open_output_file (file_data p_file, char name, unsigned long size);
	61	void close_file_data (file_data *p_file);
	62
	63	/* Return pointer to section header for named section. */
	64	IMAGE_SECTION_HEADER * find_section (char * name, IMAGE_NT_HEADERS * nt_header);
	65
	66	/* Return pointer to section header for section containing the given
	67	relative virtual address. */
	68	IMAGE_SECTION_HEADER * rva_to_section (DWORD_PTR rva, IMAGE_NT_HEADERS * nt_header);
	69
	70	#endif /* NTHEAP_H_ */