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.
 */
#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_ */
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	#define get_reserved_heap_size() reserved_heap_size
	31	#define get_committed_heap_size() (get_data_end () - get_data_start ())
	32	#define get_heap_start() get_data_start ()
	33	#define get_heap_end() get_data_end ()
	34
	35	extern unsigned char *get_data_start (void);
	36	extern unsigned char *get_data_end (void);
	37	extern size_t reserved_heap_size;
	38	extern BOOL using_dynamic_heap;
	39
	40	/* Emulation of Unix sbrk(). */
	41	extern void *sbrk (ptrdiff_t size);
	42
	43	/* Initialize heap structures for sbrk on startup. */
	44	extern void init_heap (void);
	45
	46	/* Round the heap to this size. */
	47	extern void round_heap (size_t size);
	48
	49	/* ----------------------------------------------------------------- */
	50	/* Useful routines for manipulating memory-mapped files. */
	51
	52	typedef struct file_data {
	53	char *name;
	54	unsigned long size;
	55	HANDLE file;
	56	HANDLE file_mapping;
	57	unsigned char *file_base;
	58	} file_data;
	59
	60	int open_input_file (file_data p_file, char name);
	61	int open_output_file (file_data p_file, char name, unsigned long size);
	62	void close_file_data (file_data *p_file);
	63
	64	/* Return pointer to section header for named section. */
	65	IMAGE_SECTION_HEADER * find_section (char * name, IMAGE_NT_HEADERS * nt_header);
	66
	67	/* Return pointer to section header for section containing the given
	68	relative virtual address. */
	69	IMAGE_SECTION_HEADER * rva_to_section (DWORD_PTR rva, IMAGE_NT_HEADERS * nt_header);
	70
	71	#endif /* NTHEAP_H_ */