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89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/* Definitions for POSIX memory map interface. Linux/HPPA version.
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Copyright (C) 1997-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_MMAN_H
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# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
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#endif
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/* These are taken from the kernel definitions. */
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/* Other flags. */
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#define __MAP_ANONYMOUS 0x10 /* Don't use a file */
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#ifdef __USE_MISC
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# define MAP_VARIABLE 0
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#endif
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/* These are Linux-specific. */
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#ifdef __USE_MISC
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# define MAP_DENYWRITE 0x0800 /* ETXTBSY */
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# define MAP_EXECUTABLE 0x1000 /* Mark it as an executable */
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# define MAP_LOCKED 0x2000 /* Pages are locked */
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# define MAP_NORESERVE 0x4000 /* Don't check for reservations */
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# define MAP_GROWSDOWN 0x8000 /* Stack-like segment */
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# define MAP_POPULATE 0x10000 /* Populate (prefault) pagetables */
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# define MAP_NONBLOCK 0x20000 /* Do not block on IO */
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# define MAP_STACK 0x40000 /* Create for process/thread stacks */
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# define MAP_HUGETLB 0x80000 /* Create a huge page mapping */
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# define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED but do not unmap
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underlying mapping. */
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#endif
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/* Advice to "madvise" */
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#ifdef __USE_MISC
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# define MADV_SOFT_OFFLINE 101 /* Soft offline page for testing. */
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#endif
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#include <bits/mman-linux.h>
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#ifdef __USE_MISC
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# undef MAP_TYPE
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# define MAP_TYPE 0x2b /* Mask for type of mapping */
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#endif
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#undef MAP_FIXED
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#define MAP_FIXED 0x04 /* Interpret addr exactly */
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/* Flags to "msync" */
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#undef MS_SYNC
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#define MS_SYNC 1 /* Synchronous memory sync */
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#undef MS_ASYNC
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#define MS_ASYNC 2 /* Sync memory asynchronously */
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#undef MS_INVALIDATE
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#define MS_INVALIDATE 4 /* Invalidate the caches */
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/* Advice to "madvise" */
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#ifdef __USE_MISC
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# undef MADV_MERGEABLE
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# define MADV_MERGEABLE 65 /* KSM may merge identical pages */
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# undef MADV_UNMERGEABLE
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# define MADV_UNMERGEABLE 66 /* KSM may not merge identical pages */
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# undef MADV_HUGEPAGE
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# define MADV_HUGEPAGE 67 /* Worth backing with hugepages */
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# undef MADV_NOHUGEPAGE
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# define MADV_NOHUGEPAGE 68 /* Not worth backing with hugepages */
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# undef MADV_DONTDUMP
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# define MADV_DONTDUMP 69 /* Explicity exclude from the core dump,
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overrides the coredump filter bits */
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# undef MADV_DODUMP
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# define MADV_DODUMP 70 /* Clear the MADV_NODUMP flag */
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# undef MADV_WIPEONFORK
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# define MADV_WIPEONFORK 71 /* Zero memory on fork, child only. */
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# undef MADV_KEEPONFORK
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# define MADV_KEEPONFORK 72 /* Undo MADV_WIPEONFORK. */
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#endif
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