event/BufferedSocket: move output buffer to FullyBufferedSocket

BufferedSocket has just an input buffer, and FullyBufferedSocket adds
the output buffer.

1 files changed, 63 insertions, 0 deletions

diff --git a/src/event/FullyBufferedSocket.hxx b/src/event/FullyBufferedSocket.hxx
new file mode 100644
index 000000000..c67c2c78d
--- /dev/null
+++ b/src/event/FullyBufferedSocket.hxx
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_FULLY_BUFFERED_SOCKET_HXX
+#define MPD_FULLY_BUFFERED_SOCKET_HXX
+
+#include "check.h"
+#include "BufferedSocket.hxx"
+#include "util/PeakBuffer.hxx"
+#include "gcc.h"
+
+/**
+ * A #BufferedSocket specialization that adds an output buffer.
+ */
+class FullyBufferedSocket : protected BufferedSocket {
+	PeakBuffer output;
+
+public:
+	FullyBufferedSocket(int _fd, EventLoop &_loop,
+			    size_t normal_size, size_t peak_size=0)
+		:BufferedSocket(_fd, _loop),
+		 output(normal_size, peak_size) {
+	}
+
+	using BufferedSocket::IsDefined;
+	using BufferedSocket::Close;
+
+private:
+	ssize_t DirectWrite(const void *data, size_t length);
+
+	/**
+	 * Send data from the output buffer to the socket.
+	 *
+	 * @return false if the socket has been closed
+	 */
+	bool WriteFromBuffer();
+
+protected:
+	/**
+	 * @return false if the socket has been closed
+	 */
+	bool Write(const void *data, size_t length);
+
+	virtual bool OnSocketReady(unsigned flags) override;
+};
+
+#endif