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