Updated to final KDE3 ktorrent release (2.2.6)

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/ktorrent@1077377 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 89 insertions, 0 deletions

diff --git a/libktorrent/net/circularbuffer.h b/libktorrent/net/circularbuffer.h
new file mode 100644
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--- /dev/null
+++ b/libktorrent/net/circularbuffer.h
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+/***************************************************************************
+ *   Copyright (C) 2005 by Joris Guisson                                   *
+ *   joris.guisson@gmail.com                                               *
+ *                                                                         *
+ *   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 NETCIRCULARBUFFER_H
+#define NETCIRCULARBUFFER_H
+
+#include <qmutex.h> 
+#include <util/constants.h>
+
+namespace net
+{
+	using bt::Uint8;
+	using bt::Uint32;
+	
+	class BufferedSocket;
+
+	/**
+	 * @author Joris Guisson <joris.guisson@gmail.com>
+	 * 
+	 * Simple circular buffer, to simulate a queue.
+	 * Writes happen at the end, reads at the beginning.
+	 * The buffer is protected by a mutex.
+	 */
+	class CircularBuffer
+	{
+		Uint8* buf;
+		Uint32 max_size;
+		Uint32 first; // index of first byte in the buffer
+		Uint32 size; // number of bytes in use
+		mutable QMutex mutex;
+	public:
+		/**
+		 * Create the buffer.
+		 * @param max_size Maximum size of the buffer.
+		 */
+		CircularBuffer(Uint32 max_size);
+		virtual ~CircularBuffer();
+
+		/// How much capacity does the buffer have
+		Uint32 capacity() const {return max_size;}
+		
+		/// How much free space is there 
+		Uint32 freeSpace() const;
+		
+		
+		/**
+		 * Write a bunch of data at the back of the buffer.
+		 * @param data Data to write
+		 * @param size How many bytes to write
+		 * @return The number of bytes written in the buffer
+		 */
+		Uint32 write(const Uint8* data,Uint32 size);
+		
+		/**
+		 * Read from the buffer.
+		 * @param data Buffer to store read data
+		 * @param max_to_read Maximum amount of bytes to read
+		 * @return The number of bytes read
+		 */
+		Uint32 read(Uint8* data,Uint32 max_to_read);
+		
+		/**
+		 * Send the data in the buffer over the socket
+		 * @param s THe socket
+		 * @param max Maximum bytes to send
+		 * @return The number of bytes written
+		 */
+		Uint32 send(BufferedSocket* s,Uint32 max);
+	};
+
+}
+
+#endif