1 /**************************************************************************
3 * Copyright 2011 LunarG, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * OS independent memory mapping (with large file support).
32 * @author Chia-I Wu <olvaffe@gmail.com>
39 #include "pipe/p_config.h"
40 #include "pipe/p_compiler.h"
42 #if defined(PIPE_OS_UNIX)
43 # include <sys/mman.h>
45 # error Unsupported OS
53 #if defined(PIPE_OS_ANDROID) && !defined(__LP64__)
54 /* 32-bit needs mmap64 for 64-bit offsets */
55 # define os_mmap(addr, length, prot, flags, fd, offset) \
56 mmap64(addr, length, prot, flags, fd, offset)
58 # define os_munmap(addr, length) \
62 /* assume large file support exists */
63 # define os_mmap(addr, length, prot, flags, fd, offset) \
64 mmap(addr, length, prot, flags, fd, offset)
66 static inline int os_munmap(void *addr
, size_t length
)
68 /* Copied from configure code generated by AC_SYS_LARGEFILE */
69 #define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + \
70 (((off_t) 1 << 31) << 31))
71 STATIC_ASSERT(LARGE_OFF_T
% 2147483629 == 721 &&
72 LARGE_OFF_T
% 2147483647 == 1);
75 return munmap(addr
, length
);
84 #endif /* _OS_MMAN_H_ */