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The Android Open Source Project9066cfe2009-03-03 19:31:44 -08001/* utils/ashmem.h
2 **
3 ** Copyright 2008 The Android Open Source Project
4 **
5 ** This file is dual licensed. It may be redistributed and/or modified
6 ** under the terms of the Apache 2.0 License OR version 2 of the GNU
7 ** General Public License.
8 */
9
10#ifndef _UTILS_ASHMEM_H
11#define _UTILS_ASHMEM_H
12
13#include <linux/limits.h>
14#include <linux/ioctl.h>
15
16#define ASHMEM_NAME_LEN 256
17
18#define ASHMEM_NAME_DEF "dev/ashmem"
19
20/* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */
21#define ASHMEM_NOT_REAPED 0
22#define ASHMEM_WAS_REAPED 1
23
24/* Return values from ASHMEM_UNPIN: Is the mapping now pinned or unpinned? */
25#define ASHMEM_NOW_UNPINNED 0
26#define ASHMEM_NOW_PINNED 1
27
28#define __ASHMEMIOC 0x77
29
30#define ASHMEM_SET_NAME _IOW(__ASHMEMIOC, 1, char[ASHMEM_NAME_LEN])
31#define ASHMEM_GET_NAME _IOR(__ASHMEMIOC, 2, char[ASHMEM_NAME_LEN])
32#define ASHMEM_SET_SIZE _IOW(__ASHMEMIOC, 3, size_t)
33#define ASHMEM_GET_SIZE _IO(__ASHMEMIOC, 4)
34#define ASHMEM_SET_PROT_MASK _IOW(__ASHMEMIOC, 5, unsigned long)
35#define ASHMEM_GET_PROT_MASK _IO(__ASHMEMIOC, 6)
36#define ASHMEM_PIN _IO(__ASHMEMIOC, 7)
37#define ASHMEM_UNPIN _IO(__ASHMEMIOC, 8)
38#define ASHMEM_ISPINNED _IO(__ASHMEMIOC, 9)
39#define ASHMEM_PURGE_ALL_CACHES _IO(__ASHMEMIOC, 10)
40
41#endif /* _UTILS_ASHMEM_H */