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authortpearson <tpearson@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2010-01-20 02:37:40 +0000
committertpearson <tpearson@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2010-01-20 02:37:40 +0000
commit9ad5c7b5e23b4940e7a3ea3ca3a6fb77e6a8fab0 (patch)
treed088b5210e77d9fa91d954d8550e00e372b47378 /libktorrent/net/circularbuffer.h
downloadktorrent-9ad5c7b5e23b4940e7a3ea3ca3a6fb77e6a8fab0.tar.gz
ktorrent-9ad5c7b5e23b4940e7a3ea3ca3a6fb77e6a8fab0.zip
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
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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