[babeltrace.git] / src / compat / mman.h

#ifndef _BABELTRACE_COMPAT_MMAN_H
#define _BABELTRACE_COMPAT_MMAN_H

/*
 * Copyright (C) 2015-2016  Michael Jeanson <mjeanson@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifdef __MINGW32__

#include <sys/types.h>

#define PROT_NONE	0x0
#define PROT_READ	0x1
#define PROT_WRITE	0x2
#define PROT_EXEC	0x4

#define MAP_FILE	0
#define MAP_SHARED	1
#define MAP_PRIVATE	2
#define MAP_TYPE	0xF
#define MAP_FIXED	0x10
#define MAP_ANONYMOUS	0x20
#define MAP_ANON	MAP_ANONYMOUS
#define MAP_FAILED	((void *) -1)

/*
 * Note that some platforms (e.g. Windows) do not allow read-only
 * mappings to exceed the file's size (even within a page).
 */
void *bt_mmap(void *addr, size_t length, int prot, int flags, int fd,
	off_t offset, int log_level);

int bt_munmap(void *addr, size_t length);

/*
 * On Windows the memory mapping offset must be aligned to the memory
 * allocator allocation granularity and not the page size.
 */
size_t bt_mmap_get_offset_align_size(int log_level);

#else /* __MINGW32__ */

#include <sys/mman.h>
#include "common/common.h"

static inline
void *bt_mmap(void *addr, size_t length, int prot, int flags, int fd,
	off_t offset, int log_level)
{
	return (void *) mmap(addr, length, prot, flags, fd, offset);
}

static inline
int bt_munmap(void *addr, size_t length)
{
	return munmap(addr, length);
}

/*
 * On other platforms the memory mapping offset must be aligned to the
 * page size.
 */
static inline
size_t bt_mmap_get_offset_align_size(int log_level)
{
	return bt_common_get_page_size(log_level);
}
#endif /* __MINGW32__ */

#ifndef MAP_ANONYMOUS
# ifdef MAP_ANON
#   define MAP_ANONYMOUS MAP_ANON
# endif
#endif

#endif /* _BABELTRACE_COMPAT_MMAN_H */
Commit	Line	Data
5d620f61 MJ	1	#ifndef _BABELTRACE_COMPAT_MMAN_H
	2	#define _BABELTRACE_COMPAT_MMAN_H
	3
	4	/*
8f76831a	5	* Copyright (C) 2015-2016 Michael Jeanson <mjeanson@efficios.com>
5d620f61 MJ	6	*
	7	* Permission is hereby granted, free of charge, to any person obtaining a copy
	8	* of this software and associated documentation files (the "Software"), to deal
	9	* in the Software without restriction, including without limitation the rights
	10	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	11	* copies of the Software, and to permit persons to whom the Software is
	12	* furnished to do so, subject to the following conditions:
	13	*
	14	* The above copyright notice and this permission notice shall be included in
	15	* all copies or substantial portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	18	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	19	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	20	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	21	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	22	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	23	* SOFTWARE.
	24	*/
	25
04394229	26	#ifdef __MINGW32__
8f76831a MJ	27
	28	#include <sys/types.h>
	29
	30	#define PROT_NONE 0x0
	31	#define PROT_READ 0x1
	32	#define PROT_WRITE 0x2
	33	#define PROT_EXEC 0x4
	34
	35	#define MAP_FILE 0
	36	#define MAP_SHARED 1
	37	#define MAP_PRIVATE 2
	38	#define MAP_TYPE 0xF
	39	#define MAP_FIXED 0x10
	40	#define MAP_ANONYMOUS 0x20
	41	#define MAP_ANON MAP_ANONYMOUS
	42	#define MAP_FAILED ((void *) -1)
	43
2f5a009b JG	44	/*
	45	* Note that some platforms (e.g. Windows) do not allow read-only
	46	* mappings to exceed the file's size (even within a page).
	47	*/
04394229	48	void bt_mmap(void addr, size_t length, int prot, int flags, int fd,
95c324a4	49	off_t offset, int log_level);
8f76831a	50
04394229 MJ	51	int bt_munmap(void *addr, size_t length);
04394229 MJ	52
3b16a19b MJ	53	/*
	54	* On Windows the memory mapping offset must be aligned to the memory
	55	* allocator allocation granularity and not the page size.
	56	*/
	57	size_t bt_mmap_get_offset_align_size(int log_level);
	58
04394229 MJ	59	#else /* __MINGW32__ */
	60
	61	#include <sys/mman.h>
3b16a19b	62	#include "common/common.h"
04394229 MJ	63
	64	static inline
	65	void bt_mmap(void addr, size_t length, int prot, int flags, int fd,
95c324a4	66	off_t offset, int log_level)
04394229 MJ	67	{
	68	return (void *) mmap(addr, length, prot, flags, fd, offset);
	69	}
	70
	71	static inline
	72	int bt_munmap(void *addr, size_t length)
	73	{
	74	return munmap(addr, length);
	75	}
3b16a19b MJ	76
	77	/*
	78	* On other platforms the memory mapping offset must be aligned to the
	79	* page size.
	80	*/
	81	static inline
	82	size_t bt_mmap_get_offset_align_size(int log_level)
	83	{
	84	return bt_common_get_page_size(log_level);
	85	}
8f76831a MJ	86	#endif /* __MINGW32__ */
8f76831a MJ	87
5d620f61 MJ	88	#ifndef MAP_ANONYMOUS
	89	# ifdef MAP_ANON
	90	# define MAP_ANONYMOUS MAP_ANON
	91	# endif
	92	#endif
	93
	94	#endif /* _BABELTRACE_COMPAT_MMAN_H */