1 /* 2 * Copyright 2008 The Android Open Source Project 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef _CUTILS_ASHMEM_H 9 #define _CUTILS_ASHMEM_H 10 11 #include <stddef.h> 12 13 #ifdef __cplusplus 14 extern "C" { 15 #endif 16 17 int ashmem_create_region(const char *name, size_t size); 18 int ashmem_set_prot_region(int fd, int prot); 19 int ashmem_pin_region(int fd, size_t offset, size_t len); 20 int ashmem_unpin_region(int fd, size_t offset, size_t len); 21 int ashmem_get_size_region(int fd); 22 23 #ifdef __cplusplus 24 } 25 #endif 26 27 #ifndef __ASHMEMIOC /* in case someone included <linux/ashmem.h> too */ 28 29 #define ASHMEM_NAME_LEN 256 30 31 #define ASHMEM_NAME_DEF "dev/ashmem" 32 33 /* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */ 34 #define ASHMEM_NOT_PURGED 0 35 #define ASHMEM_WAS_PURGED 1 36 37 /* Return values from ASHMEM_UNPIN: Is the mapping now pinned or unpinned? */ 38 #define ASHMEM_IS_UNPINNED 0 39 #define ASHMEM_IS_PINNED 1 40 41 #endif /* ! __ASHMEMIOC */ 42 43 #endif /* _CUTILS_ASHMEM_H */ 44
