1 /* cutils/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 _CUTILS_ASHMEM_H 11 #define _CUTILS_ASHMEM_H 12 13 #include <stddef.h> 14 15 #ifdef __cplusplus 16 extern "C" { 17 #endif 18 19 int ashmem_create_region(const char *name, size_t size); 20 int ashmem_set_prot_region(int fd, int prot); 21 int ashmem_pin_region(int fd, size_t offset, size_t len); 22 int ashmem_unpin_region(int fd, size_t offset, size_t len); 23 int ashmem_get_size_region(int fd); 24 25 #ifdef __cplusplus 26 } 27 #endif 28 29 #ifndef __ASHMEMIOC /* in case someone included <linux/ashmem.h> too */ 30 31 #define ASHMEM_NAME_LEN 256 32 33 #define ASHMEM_NAME_DEF "dev/ashmem" 34 35 /* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */ 36 #define ASHMEM_NOT_PURGED 0 37 #define ASHMEM_WAS_PURGED 1 38 39 /* Return values from ASHMEM_UNPIN: Is the mapping now pinned or unpinned? */ 40 #define ASHMEM_IS_UNPINNED 0 41 #define ASHMEM_IS_PINNED 1 42 43 #endif /* ! __ASHMEMIOC */ 44 45 #endif /* _CUTILS_ASHMEM_H */ 46