88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright 2011 LunarG, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sub license, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
* of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
|
|
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
|
|
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
**************************************************************************/
|
|
|
|
/**
|
|
* @file
|
|
* OS independent memory mapping (with large file support).
|
|
*
|
|
* @author Chia-I Wu <olvaffe@gmail.com>
|
|
*/
|
|
|
|
#ifndef _OS_MMAN_H_
|
|
#define _OS_MMAN_H_
|
|
|
|
|
|
#include "pipe/p_config.h"
|
|
#include "pipe/p_compiler.h"
|
|
|
|
#if defined(PIPE_OS_UNIX)
|
|
# ifndef _FILE_OFFSET_BITS
|
|
# error _FILE_OFFSET_BITS must be defined to 64
|
|
# endif
|
|
# include <sys/mman.h>
|
|
#else
|
|
# error Unsupported OS
|
|
#endif
|
|
|
|
#if defined(PIPE_OS_ANDROID)
|
|
# include <errno.h> /* for EINVAL */
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
#if defined(PIPE_OS_ANDROID)
|
|
|
|
extern void *__mmap2(void *, size_t, int, int, int, size_t);
|
|
|
|
static INLINE void *os_mmap(void *addr, size_t length, int prot, int flags, int fd, loff_t offset)
|
|
{
|
|
/* offset must be aligned to 4096 (not necessarily the page size) */
|
|
if (unlikely(offset & 4095)) {
|
|
errno = EINVAL;
|
|
return MAP_FAILED;
|
|
}
|
|
|
|
return __mmap2(addr, length, prot, flags, fd, (size_t) (offset >> 12));
|
|
}
|
|
|
|
#else
|
|
/* assume large file support exists */
|
|
# define os_mmap(addr, length, prot, flags, fd, offset) mmap(addr, length, prot, flags, fd, offset)
|
|
#endif
|
|
|
|
#define os_munmap(addr, length) munmap(addr, length)
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _OS_MMAN_H_ */
|