mirror of
https://github.com/meizu-m86/twrp_multirom_m86
synced 2025-11-04 06:15:41 +08:00
63b089e3aa
It turns out the standard explicitly states that if the pointer is null, the deleter function won't be called. So it doesn't matter that fclose(3) doesn't accept null. Change-Id: I10e6e0d62209ec03ac60e673edd46f32ba279a04
63 lines
1.3 KiB
C++
63 lines
1.3 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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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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#ifndef UNIQUE_FD_H
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#define UNIQUE_FD_H
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#include <stdio.h>
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#include <memory>
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class unique_fd {
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public:
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unique_fd(int fd) : fd_(fd) { }
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unique_fd(unique_fd&& uf) {
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fd_ = uf.fd_;
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uf.fd_ = -1;
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}
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~unique_fd() {
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if (fd_ != -1) {
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close(fd_);
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}
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}
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int get() {
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return fd_;
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}
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// Movable.
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unique_fd& operator=(unique_fd&& uf) {
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fd_ = uf.fd_;
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uf.fd_ = -1;
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return *this;
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}
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explicit operator bool() const {
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return fd_ != -1;
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}
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private:
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int fd_;
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// Non-copyable.
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unique_fd(const unique_fd&) = delete;
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unique_fd& operator=(const unique_fd&) = delete;
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};
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#endif // UNIQUE_FD_H
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