| /* |
| * Copyright 2008 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef _CUTILS_ASHMEM_H |
| #define _CUTILS_ASHMEM_H |
| |
| #include <stddef.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| int ashmem_create_region(const char *name, size_t size); |
| int ashmem_set_prot_region(int fd, int prot); |
| |
| /** |
| * @return ASHMEM_NOT_PURGED if the memory was not purged. |
| * ASHMEM_WAS_PURGED if the memory was purged. |
| * -1 on error. |
| */ |
| int ashmem_pin_region(int fd, size_t offset, size_t len); |
| int ashmem_unpin_region(int fd, size_t offset, size_t len); |
| int ashmem_get_size_region(int fd); |
| int ashmem_purge_all_caches(int fd); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #ifndef __ASHMEMIOC /* in case someone included <linux/ashmem.h> too */ |
| |
| #define ASHMEM_NAME_LEN 256 |
| |
| #define ASHMEM_NAME_DEF "dev/ashmem" |
| |
| /* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */ |
| #define ASHMEM_NOT_PURGED 0 |
| #define ASHMEM_WAS_PURGED 1 |
| |
| /* Return values from ASHMEM_UNPIN: Is the mapping now pinned or unpinned? */ |
| #define ASHMEM_IS_UNPINNED 0 |
| #define ASHMEM_IS_PINNED 1 |
| |
| #endif /* ! __ASHMEMIOC */ |
| |
| #endif /* _CUTILS_ASHMEM_H */ |