127 lines
3.0 KiB
C++
Executable File
127 lines
3.0 KiB
C++
Executable File
/*
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* Copyright (C) 2018 Fuzhou Rockchip Electronics Co.Ltd.
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*
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* Modification based on code covered by the Apache License, Version 2.0 (the "License").
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* You may not use this software 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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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS TO YOU ON AN "AS IS" BASIS
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* AND ANY AND ALL WARRANTIES AND REPRESENTATIONS WITH RESPECT TO SUCH SOFTWARE, WHETHER EXPRESS,
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* IMPLIED, STATUTORY OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF TITLE,
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* NON-INFRINGEMENT, MERCHANTABILITY, SATISFACTROY QUALITY, ACCURACY OR FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED.
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*
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* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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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 ANDROID_AUTO_FD_H_
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#define ANDROID_AUTO_FD_H_
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#include <unistd.h>
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namespace android {
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class UniqueFd {
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public:
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UniqueFd() = default;
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UniqueFd(int fd) : fd_(fd) {
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}
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UniqueFd(UniqueFd &&rhs) {
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fd_ = rhs.fd_;
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rhs.fd_ = -1;
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}
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UniqueFd &operator=(UniqueFd &&rhs) {
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Set(rhs.Release());
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return *this;
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}
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~UniqueFd() {
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if (fd_ >= 0)
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close(fd_);
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}
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int Release() {
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int old_fd = fd_;
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fd_ = -1;
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return old_fd;
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}
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int Set(int fd) {
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if (fd_ >= 0)
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close(fd_);
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fd_ = fd;
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return fd_;
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}
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void Close() {
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if (fd_ >= 0)
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close(fd_);
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fd_ = -1;
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}
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int get() const {
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return fd_;
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}
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private:
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int fd_ = -1;
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};
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struct OutputFd {
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OutputFd() = default;
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OutputFd(int *fd) : fd_(fd) {
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}
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OutputFd(OutputFd &&rhs) {
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fd_ = rhs.fd_;
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rhs.fd_ = NULL;
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}
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OutputFd &operator=(OutputFd &&rhs) {
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fd_ = rhs.fd_;
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rhs.fd_ = NULL;
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return *this;
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}
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int Set(int fd) {
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if (*fd_ >= 0)
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close(*fd_);
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*fd_ = fd;
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return fd;
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}
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int get() {
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return *fd_;
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}
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operator bool() const {
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return fd_ != NULL;
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}
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private:
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int *fd_ = NULL;
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};
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}
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#endif
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