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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5563 | serge | 1 | /************************************************************************** |
| 2 | * |
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| 3 | * Copyright 2011 LunarG, Inc. |
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| 4 | * All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the |
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| 8 | * "Software"), to deal in the Software without restriction, including |
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| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 11 | * permit persons to whom the Software is furnished to do so, subject to |
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| 12 | * the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice (including the |
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| 15 | * next paragraph) shall be included in all copies or substantial portions |
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| 16 | * of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 21 | * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | **************************************************************************/ |
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| 27 | |||
| 28 | /** |
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| 29 | * @file |
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| 30 | * OS independent memory mapping (with large file support). |
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| 31 | * |
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| 32 | * @author Chia-I Wu |
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| 33 | */ |
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| 34 | |||
| 35 | #ifndef _OS_MMAN_H_ |
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| 36 | #define _OS_MMAN_H_ |
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| 37 | |||
| 38 | |||
| 39 | #include "pipe/p_config.h" |
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| 40 | #include "pipe/p_compiler.h" |
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| 41 | |||
| 42 | #if defined(PIPE_OS_UNIX) |
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| 43 | # ifndef _FILE_OFFSET_BITS |
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| 44 | # error _FILE_OFFSET_BITS must be defined to 64 |
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| 45 | # endif |
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| 46 | # include |
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| 47 | #else |
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| 48 | # error Unsupported OS |
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| 49 | #endif |
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| 50 | |||
| 51 | #if defined(PIPE_OS_ANDROID) |
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| 52 | # include |
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| 53 | #endif |
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| 54 | |||
| 55 | #ifdef __cplusplus |
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| 56 | extern "C" { |
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| 57 | #endif |
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| 58 | |||
| 59 | |||
| 60 | #if defined(PIPE_OS_ANDROID) |
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| 61 | |||
| 62 | extern void *__mmap2(void *, size_t, int, int, int, size_t); |
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| 63 | |||
| 64 | static INLINE void *os_mmap(void *addr, size_t length, int prot, int flags, int fd, loff_t offset) |
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| 65 | { |
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| 66 | /* offset must be aligned to 4096 (not necessarily the page size) */ |
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| 67 | if (unlikely(offset & 4095)) { |
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| 68 | errno = EINVAL; |
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| 69 | return MAP_FAILED; |
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| 70 | } |
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| 71 | |||
| 72 | return __mmap2(addr, length, prot, flags, fd, (size_t) (offset >> 12)); |
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| 73 | } |
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| 74 | |||
| 75 | #else |
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| 76 | /* assume large file support exists */ |
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| 77 | # define os_mmap(addr, length, prot, flags, fd, offset) mmap(addr, length, prot, flags, fd, offset) |
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| 78 | #endif |
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| 79 | |||
| 80 | #define os_munmap(addr, length) munmap(addr, length) |
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| 81 | |||
| 82 | |||
| 83 | #ifdef __cplusplus |
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| 84 | } |
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| 85 | #endif |
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| 86 | |||
| 87 | #endif /* _OS_MMAN_H_ */ |