747eb149d0
Bug: 116614593 Test: build with WITH_TIDY=1 Change-Id: I5a7461386946ca623ab509609092aa0ac8418b80
80 lines
1.8 KiB
C++
80 lines
1.8 KiB
C++
/*
|
|
* Copyright (C) 2016 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef LIBMEMUNREACHABLE_SCOPED_PIPE_H_
|
|
#define LIBMEMUNREACHABLE_SCOPED_PIPE_H_
|
|
|
|
#include <unistd.h>
|
|
|
|
#include "log.h"
|
|
|
|
namespace android {
|
|
|
|
class ScopedPipe {
|
|
public:
|
|
ScopedPipe() : pipefd_{-1, -1} {
|
|
int ret = pipe2(pipefd_, O_CLOEXEC);
|
|
if (ret < 0) {
|
|
MEM_LOG_ALWAYS_FATAL("failed to open pipe");
|
|
}
|
|
}
|
|
~ScopedPipe() { Close(); }
|
|
|
|
ScopedPipe(ScopedPipe&& other) noexcept {
|
|
SetReceiver(other.ReleaseReceiver());
|
|
SetSender(other.ReleaseSender());
|
|
}
|
|
|
|
ScopedPipe& operator=(ScopedPipe&& other) noexcept {
|
|
SetReceiver(other.ReleaseReceiver());
|
|
SetSender(other.ReleaseSender());
|
|
return *this;
|
|
}
|
|
|
|
void CloseReceiver() { close(ReleaseReceiver()); }
|
|
|
|
void CloseSender() { close(ReleaseSender()); }
|
|
|
|
void Close() {
|
|
CloseReceiver();
|
|
CloseSender();
|
|
}
|
|
|
|
int Receiver() { return pipefd_[0]; }
|
|
int Sender() { return pipefd_[1]; }
|
|
|
|
int ReleaseReceiver() {
|
|
int ret = Receiver();
|
|
SetReceiver(-1);
|
|
return ret;
|
|
}
|
|
|
|
int ReleaseSender() {
|
|
int ret = Sender();
|
|
SetSender(-1);
|
|
return ret;
|
|
}
|
|
|
|
private:
|
|
void SetReceiver(int fd) { pipefd_[0] = fd; };
|
|
void SetSender(int fd) { pipefd_[1] = fd; };
|
|
|
|
int pipefd_[2];
|
|
};
|
|
|
|
} // namespace android
|
|
|
|
#endif
|