e412dd12e8
Currently, there are some useless includes in the codebase. We can use a tool named include-what-you-use to optimize these includes. By using a strict include-what-you-use policy, we can get lots of benefits from it.
75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// This file is copied from
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// https://github.com/ClickHouse/ClickHouse/blob/master/base/base/mremap.h
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// and modified by Doris
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#pragma once
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#if !defined(_MSC_VER)
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#include <sys/mman.h>
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#endif
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#ifdef MREMAP_MAYMOVE
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#define HAS_MREMAP 1
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#else
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#define HAS_MREMAP 0
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#endif
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/// You can forcely disable mremap by defining DISABLE_MREMAP to 1 before including this file.
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#ifndef DISABLE_MREMAP
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#if HAS_MREMAP
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#define DISABLE_MREMAP 0
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#else
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#define DISABLE_MREMAP 1
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#endif
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#endif
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/// Implement mremap with mmap/memcpy/munmap.
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void* mremap_fallback(void* old_address, size_t old_size, size_t new_size, int flags, int mmap_prot,
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int mmap_flags, int mmap_fd, off_t mmap_offset);
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#if !HAS_MREMAP
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#define MREMAP_MAYMOVE 1
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inline void* mremap(void* old_address, size_t old_size, size_t new_size, int flags = 0,
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int mmap_prot = 0, int mmap_flags = 0, int mmap_fd = -1,
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off_t mmap_offset = 0) {
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return mremap_fallback(old_address, old_size, new_size, flags, mmap_prot, mmap_flags, mmap_fd,
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mmap_offset);
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}
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#endif
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inline void* clickhouse_mremap(void* old_address, size_t old_size, size_t new_size, int flags = 0,
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[[maybe_unused]] int mmap_prot = 0,
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[[maybe_unused]] int mmap_flags = 0,
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[[maybe_unused]] int mmap_fd = -1,
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[[maybe_unused]] off_t mmap_offset = 0) {
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#if DISABLE_MREMAP
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return mremap_fallback(old_address, old_size, new_size, flags, mmap_prot, mmap_flags, mmap_fd,
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mmap_offset);
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#else
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return mremap(old_address, old_size, new_size, flags
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#if !defined(MREMAP_FIXED)
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,
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mmap_prot, mmap_flags, mmap_fd, mmap_offset
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#endif
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);
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#endif
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}
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