Adds a modified copy of talk/base to webrtc/base. It is the first step in
migrating talk/base to webrtc/base.
BUG=N/A
R=niklas.enbom@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/17479005
git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@6129 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/base/socketpool.h b/base/socketpool.h
new file mode 100644
index 0000000..7bcaa06
--- /dev/null
+++ b/base/socketpool.h
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_BASE_SOCKETPOOL_H_
+#define WEBRTC_BASE_SOCKETPOOL_H_
+
+#include <deque>
+#include <list>
+#include "webrtc/base/logging.h"
+#include "webrtc/base/sigslot.h"
+#include "webrtc/base/socketaddress.h"
+
+namespace rtc {
+
+class AsyncSocket;
+class LoggingAdapter;
+class SocketFactory;
+class SocketStream;
+class StreamInterface;
+
+//////////////////////////////////////////////////////////////////////
+// StreamPool
+//////////////////////////////////////////////////////////////////////
+
+class StreamPool {
+public:
+ virtual ~StreamPool() { }
+
+ virtual StreamInterface* RequestConnectedStream(const SocketAddress& remote,
+ int* err) = 0;
+ virtual void ReturnConnectedStream(StreamInterface* stream) = 0;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// StreamCache - Caches a set of open streams, defers creation/destruction to
+// the supplied StreamPool.
+///////////////////////////////////////////////////////////////////////////////
+
+class StreamCache : public StreamPool, public sigslot::has_slots<> {
+public:
+ StreamCache(StreamPool* pool);
+ virtual ~StreamCache();
+
+ // StreamPool Interface
+ virtual StreamInterface* RequestConnectedStream(const SocketAddress& remote,
+ int* err);
+ virtual void ReturnConnectedStream(StreamInterface* stream);
+
+private:
+ typedef std::pair<SocketAddress, StreamInterface*> ConnectedStream;
+ typedef std::list<ConnectedStream> ConnectedList;
+
+ void OnStreamEvent(StreamInterface* stream, int events, int err);
+
+ // We delegate stream creation and deletion to this pool.
+ StreamPool* pool_;
+ // Streams that are in use (returned from RequestConnectedStream).
+ ConnectedList active_;
+ // Streams which were returned to us, but are still open.
+ ConnectedList cached_;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// NewSocketPool
+// Creates a new stream on every request
+///////////////////////////////////////////////////////////////////////////////
+
+class NewSocketPool : public StreamPool {
+public:
+ NewSocketPool(SocketFactory* factory);
+ virtual ~NewSocketPool();
+
+ // StreamPool Interface
+ virtual StreamInterface* RequestConnectedStream(const SocketAddress& remote,
+ int* err);
+ virtual void ReturnConnectedStream(StreamInterface* stream);
+
+private:
+ SocketFactory* factory_;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// ReuseSocketPool
+// Maintains a single socket at a time, and will reuse it without closing if
+// the destination address is the same.
+///////////////////////////////////////////////////////////////////////////////
+
+class ReuseSocketPool : public StreamPool, public sigslot::has_slots<> {
+public:
+ ReuseSocketPool(SocketFactory* factory);
+ virtual ~ReuseSocketPool();
+
+ // StreamPool Interface
+ virtual StreamInterface* RequestConnectedStream(const SocketAddress& remote,
+ int* err);
+ virtual void ReturnConnectedStream(StreamInterface* stream);
+
+private:
+ void OnStreamEvent(StreamInterface* stream, int events, int err);
+
+ SocketFactory* factory_;
+ SocketStream* stream_;
+ SocketAddress remote_;
+ bool checked_out_; // Whether the stream is currently checked out
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// LoggingPoolAdapter - Adapts a StreamPool to supply streams with attached
+// LoggingAdapters.
+///////////////////////////////////////////////////////////////////////////////
+
+class LoggingPoolAdapter : public StreamPool {
+public:
+ LoggingPoolAdapter(StreamPool* pool, LoggingSeverity level,
+ const std::string& label, bool binary_mode);
+ virtual ~LoggingPoolAdapter();
+
+ // StreamPool Interface
+ virtual StreamInterface* RequestConnectedStream(const SocketAddress& remote,
+ int* err);
+ virtual void ReturnConnectedStream(StreamInterface* stream);
+
+private:
+ StreamPool* pool_;
+ LoggingSeverity level_;
+ std::string label_;
+ bool binary_mode_;
+ typedef std::deque<LoggingAdapter*> StreamList;
+ StreamList recycle_bin_;
+};
+
+//////////////////////////////////////////////////////////////////////
+
+} // namespace rtc
+
+#endif // WEBRTC_BASE_SOCKETPOOL_H_