Current File : //glibc-2.29/sysdeps/unix/sysv/linux/hppa/bits/mman.h
/* Definitions for POSIX memory map interface. Linux/HPPA version.
Copyright (C) 1997-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_MMAN_H
# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
#endif
/* These are taken from the kernel definitions. */
/* Other flags. */
#define __MAP_ANONYMOUS 0x10 /* Don't use a file */
#ifdef __USE_MISC
# define MAP_VARIABLE 0
#endif
/* These are Linux-specific. */
#ifdef __USE_MISC
# define MAP_DENYWRITE 0x0800 /* ETXTBSY */
# define MAP_EXECUTABLE 0x1000 /* Mark it as an executable */
# define MAP_LOCKED 0x2000 /* Pages are locked */
# define MAP_NORESERVE 0x4000 /* Don't check for reservations */
# define MAP_GROWSDOWN 0x8000 /* Stack-like segment */
# define MAP_POPULATE 0x10000 /* Populate (prefault) pagetables */
# define MAP_NONBLOCK 0x20000 /* Do not block on IO */
# define MAP_STACK 0x40000 /* Create for process/thread stacks */
# define MAP_HUGETLB 0x80000 /* Create a huge page mapping */
# define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED but do not unmap
underlying mapping. */
#endif
/* Advice to "madvise" */
#ifdef __USE_MISC
# define MADV_SOFT_OFFLINE 101 /* Soft offline page for testing. */
#endif
#include <bits/mman-linux.h>
#ifdef __USE_MISC
# undef MAP_TYPE
# define MAP_TYPE 0x2b /* Mask for type of mapping */
#endif
#undef MAP_FIXED
#define MAP_FIXED 0x04 /* Interpret addr exactly */
/* Flags to "msync" */
#undef MS_SYNC
#define MS_SYNC 1 /* Synchronous memory sync */
#undef MS_ASYNC
#define MS_ASYNC 2 /* Sync memory asynchronously */
#undef MS_INVALIDATE
#define MS_INVALIDATE 4 /* Invalidate the caches */
/* Advice to "madvise" */
#ifdef __USE_MISC
# undef MADV_MERGEABLE
# define MADV_MERGEABLE 65 /* KSM may merge identical pages */
# undef MADV_UNMERGEABLE
# define MADV_UNMERGEABLE 66 /* KSM may not merge identical pages */
# undef MADV_HUGEPAGE
# define MADV_HUGEPAGE 67 /* Worth backing with hugepages */
# undef MADV_NOHUGEPAGE
# define MADV_NOHUGEPAGE 68 /* Not worth backing with hugepages */
# undef MADV_DONTDUMP
# define MADV_DONTDUMP 69 /* Explicity exclude from the core dump,
overrides the coredump filter bits */
# undef MADV_DODUMP
# define MADV_DODUMP 70 /* Clear the MADV_NODUMP flag */
# undef MADV_WIPEONFORK
# define MADV_WIPEONFORK 71 /* Zero memory on fork, child only. */
# undef MADV_KEEPONFORK
# define MADV_KEEPONFORK 72 /* Undo MADV_WIPEONFORK. */
#endif
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