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65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
/*
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* Copyright 2016-present Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#ifndef _WIN32
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#include <sys/mman.h>
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// MAP_ANONYMOUS is named MAP_ANON on OSX/BSD.
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#if defined(__APPLE__) || defined(__FreeBSD__)
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#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
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#define MAP_ANONYMOUS MAP_ANON
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#endif
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#endif
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#else
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#include <cstdint>
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#include <sys/types.h>
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#define MAP_ANONYMOUS 1
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#define MAP_ANON MAP_ANONYMOUS
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#define MAP_SHARED 2
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#define MAP_PRIVATE 4
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#define MAP_POPULATE 8
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#define MAP_NORESERVE 16
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#define MAP_FIXED 32
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#define MAP_FAILED ((void*)-1)
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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 MADV_NORMAL 0
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#define MADV_DONTNEED 0
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#define MADV_SEQUENTIAL 0
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extern "C" {
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int madvise(const void* addr, size_t len, int advise);
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int mlock(const void* addr, size_t len);
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void* mmap(void* addr, size_t length, int prot, int flags, int fd, off_t off);
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int mprotect(void* addr, size_t size, int prot);
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int munlock(const void* addr, size_t length);
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int munmap(void* addr, size_t length);
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}
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#endif
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