95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/* sys/mman.h
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _SYS_MMAN_H_
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#define _SYS_MMAN_H_
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#include <stddef.h>
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#include <sys/types.h>
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#define PROT_NONE 0
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#define PROT_READ 1
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#define PROT_WRITE 2
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#define PROT_EXEC 4
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#define MAP_FILE 0
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#define MAP_SHARED 1
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#define MAP_PRIVATE 2
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#define MAP_TYPE 0xF
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#define MAP_FIXED 0x10
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#define MAP_ANONYMOUS 0x20
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#define MAP_ANON MAP_ANONYMOUS
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/* Non-standard flag */
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#define MAP_NORESERVE 0x4000 /* Don't reserve swap space for this mapping.
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Page protection must be set explicitely
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to access page. Only supported for anonymous
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private mappings. */
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#define MAP_AUTOGROW 0x8000 /* Grow underlying object to mapping size.
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File must be opened for writing. */
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#define MAP_FAILED ((void *)-1)
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/*
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* Flags for msync.
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*/
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#define MS_ASYNC 1
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#define MS_SYNC 2
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#define MS_INVALIDATE 4
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/*
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* Flags for posix_madvise.
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*/
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#define POSIX_MADV_NORMAL 0
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#define POSIX_MADV_SEQUENTIAL 1
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#define POSIX_MADV_RANDOM 2
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#define POSIX_MADV_WILLNEED 3
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#define POSIX_MADV_DONTNEED 4
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/*
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* Flags for madvise. BSD/Linux-specific.
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*/
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#define MADV_NORMAL 0
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#define MADV_SEQUENTIAL 1
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#define MADV_RANDOM 2
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#define MADV_WILLNEED 3
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#define MADV_DONTNEED 4
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/* Deliberately don't define these Linux-specific flags. An application
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expecting them to behave as defined would be in for a surprise. */
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#if 0
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#define MADV_REMOVE 5
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#define MADV_DONTFORK 6
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#define MADV_DOFORK 7
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#define MADV_HWPOISON 8
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#define MADV_SOFT_OFFLINE 9
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#define MADV_MERGEABLE 10
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#define MADV_UNMERGEABLE 11
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#endif
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extern void *mmap (void *__addr, size_t __len, int __prot, int __flags, int __fd, off_t __off);
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extern int munmap (void *__addr, size_t __len);
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extern int mprotect (void *__addr, size_t __len, int __prot);
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extern int msync (void *__addr, size_t __len, int __flags);
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extern int mlock (const void *__addr, size_t __len);
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extern int munlock (const void *__addr, size_t __len);
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extern int posix_madvise (void *__addr, size_t __len, int __advice);
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extern int madvise (void *__addr, size_t __len, int __advice);
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extern int shm_open (const char *__name, int __oflag, mode_t __mode);
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extern int shm_unlink (const char *__name);
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#ifdef __cplusplus
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};
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#endif /* __cplusplus */
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#endif /* _SYS_MMAN_H_ */
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