mirror of
git://git.musl-libc.org/musl
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d578c74e67
allows the os to free the marked pages lazily on memory pressure. expected to increase malloc performance. new in linux commit 854e9ed09dedf0c19ac8640e91bcc74bc3f9e5c9
119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
#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
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#include <features.h>
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#define __NEED_mode_t
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#define __NEED_size_t
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#define __NEED_off_t
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#if defined(_GNU_SOURCE)
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#define __NEED_ssize_t
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#endif
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#include <bits/alltypes.h>
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#define MAP_FAILED ((void *) -1)
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#define MAP_SHARED 0x01
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#define MAP_PRIVATE 0x02
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#define MAP_TYPE 0x0f
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#define MAP_FIXED 0x10
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#define MAP_ANON 0x20
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#define MAP_ANONYMOUS MAP_ANON
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#define MAP_NORESERVE 0x4000
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#define MAP_GROWSDOWN 0x0100
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#define MAP_DENYWRITE 0x0800
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#define MAP_EXECUTABLE 0x1000
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#define MAP_LOCKED 0x2000
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#define MAP_POPULATE 0x8000
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#define MAP_NONBLOCK 0x10000
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#define MAP_STACK 0x20000
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#define MAP_HUGETLB 0x40000
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#define MAP_FILE 0
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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 PROT_GROWSDOWN 0x01000000
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#define PROT_GROWSUP 0x02000000
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#define MS_ASYNC 1
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#define MS_INVALIDATE 2
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#define MS_SYNC 4
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#define MCL_CURRENT 1
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#define MCL_FUTURE 2
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#define MCL_ONFAULT 4
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#define POSIX_MADV_NORMAL 0
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#define POSIX_MADV_RANDOM 1
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#define POSIX_MADV_SEQUENTIAL 2
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#define POSIX_MADV_WILLNEED 3
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#define POSIX_MADV_DONTNEED 4
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define MADV_NORMAL 0
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#define MADV_RANDOM 1
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#define MADV_SEQUENTIAL 2
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#define MADV_WILLNEED 3
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#define MADV_DONTNEED 4
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#define MADV_FREE 8
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#define MADV_REMOVE 9
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#define MADV_DONTFORK 10
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#define MADV_DOFORK 11
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#define MADV_MERGEABLE 12
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#define MADV_UNMERGEABLE 13
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#define MADV_HUGEPAGE 14
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#define MADV_NOHUGEPAGE 15
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#define MADV_DONTDUMP 16
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#define MADV_DODUMP 17
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#define MADV_HWPOISON 100
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#define MADV_SOFT_OFFLINE 101
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#endif
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#include <bits/mman.h>
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void *mmap (void *, size_t, int, int, int, off_t);
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int munmap (void *, size_t);
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int mprotect (void *, size_t, int);
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int msync (void *, size_t, int);
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int posix_madvise (void *, size_t, int);
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int mlock (const void *, size_t);
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int munlock (const void *, size_t);
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int mlockall (int);
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int munlockall (void);
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#ifdef _GNU_SOURCE
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#define MREMAP_MAYMOVE 1
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#define MREMAP_FIXED 2
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void *mremap (void *, size_t, size_t, int, ...);
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int remap_file_pages (void *, size_t, int, size_t, int);
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#endif
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define MLOCK_ONFAULT 0x01
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int madvise (void *, size_t, int);
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int mincore (void *, size_t, unsigned char *);
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#endif
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int shm_open (const char *, int, mode_t);
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int shm_unlink (const char *);
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#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
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#define mmap64 mmap
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#define off64_t off_t
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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