76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/*
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* Copyright 2003-2020 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_FULLY_BUFFERED_SOCKET_HXX
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#define MPD_FULLY_BUFFERED_SOCKET_HXX
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#include "BufferedSocket.hxx"
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#include "IdleMonitor.hxx"
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#include "util/PeakBuffer.hxx"
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/**
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* A #BufferedSocket specialization that adds an output buffer.
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*/
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class FullyBufferedSocket : protected BufferedSocket, private IdleMonitor {
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PeakBuffer output;
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public:
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FullyBufferedSocket(SocketDescriptor _fd, EventLoop &_loop,
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size_t normal_size, size_t peak_size=0) noexcept
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:BufferedSocket(_fd, _loop), IdleMonitor(_loop),
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output(normal_size, peak_size) {
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}
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using BufferedSocket::GetEventLoop;
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using BufferedSocket::IsDefined;
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void Close() noexcept {
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IdleMonitor::Cancel();
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BufferedSocket::Close();
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}
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private:
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/**
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* @return the number of bytes written to the socket, 0 if the
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* socket isn't ready for writing, -1 on error (the socket has
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* been closed and probably destructed)
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*/
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ssize_t DirectWrite(const void *data, size_t length) noexcept;
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protected:
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/**
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* Send data from the output buffer to the socket.
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*
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* @return false if the socket has been closed
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*/
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bool Flush() noexcept;
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/**
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* @return false if the socket has been closed
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*/
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bool Write(const void *data, size_t length) noexcept;
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/* virtual methods from class SocketMonitor */
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bool OnSocketReady(unsigned flags) noexcept override;
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void OnIdle() noexcept override;
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};
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#endif
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