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/*
* Copyright (C) 2012-2017 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UNIQUE_FILE_DESCRIPTOR_HXX
#define UNIQUE_FILE_DESCRIPTOR_HXX
#include "FileDescriptor.hxx"
#include <utility>
/**
* An OO wrapper for a UNIX file descriptor.
*/
class UniqueFileDescriptor : protected FileDescriptor {
public:
UniqueFileDescriptor():FileDescriptor(FileDescriptor::Undefined()) {}
protected:
explicit UniqueFileDescriptor(int _fd):FileDescriptor(_fd) {
assert(IsDefined());
}
public:
explicit UniqueFileDescriptor(FileDescriptor _fd)
:FileDescriptor(_fd) {}
UniqueFileDescriptor(UniqueFileDescriptor &&other)
:FileDescriptor(other.Steal()) {}
~UniqueFileDescriptor() {
Close();
}
UniqueFileDescriptor &operator=(UniqueFileDescriptor &&other) {
std::swap(fd, other.fd);
return *this;
}
/**
* Convert this object to its #FileDescriptor base type.
*/
const FileDescriptor &ToFileDescriptor() const {
return *this;
}
using FileDescriptor::IsDefined;
#ifndef _WIN32
using FileDescriptor::IsValid;
#endif
using FileDescriptor::Get;
using FileDescriptor::Steal;
protected:
void Set(int _fd) {
assert(!IsDefined());
assert(_fd >= 0);
FileDescriptor::Set(_fd);
}
public:
using FileDescriptor::Open;
using FileDescriptor::OpenReadOnly;
#ifndef _WIN32
using FileDescriptor::OpenNonBlocking;
static bool CreatePipe(UniqueFileDescriptor &r, UniqueFileDescriptor &w) {
return FileDescriptor::CreatePipe(r, w);
}
using FileDescriptor::SetNonBlocking;
using FileDescriptor::SetBlocking;
using FileDescriptor::EnableCloseOnExec;
using FileDescriptor::DisableCloseOnExec;
using FileDescriptor::Duplicate;
using FileDescriptor::CheckDuplicate;
static bool CreatePipe(FileDescriptor &r, FileDescriptor &w);
#endif
#ifdef USE_EVENTFD
using FileDescriptor::CreateEventFD;
#endif
#ifdef USE_SIGNALFD
using FileDescriptor::CreateSignalFD;
#endif
#ifdef HAVE_INOTIFY_INIT
using FileDescriptor::CreateInotify;
#endif
#ifdef HAVE_EVENTFD
using FileDescriptor::CreateEventFD;
#endif
#ifdef HAVE_SIGNALFD
using FileDescriptor::CreateSignalFD;
#endif
#ifdef HAVE_INOTIFY
using FileDescriptor::CreateInotify;
#endif
bool Close() {
return IsDefined() && FileDescriptor::Close();
}
using FileDescriptor::Rewind;
using FileDescriptor::Seek;
using FileDescriptor::Skip;
using FileDescriptor::Tell;
using FileDescriptor::GetSize;
using FileDescriptor::Read;
using FileDescriptor::Write;
#ifndef _WIN32
using FileDescriptor::Poll;
using FileDescriptor::WaitReadable;
using FileDescriptor::WaitWritable;
using FileDescriptor::IsReadyForWriting;
#endif
};
#endif
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