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/*
* Copyright (C) 2009, 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef WorkerThreadableWebSocketChannel_h
#define WorkerThreadableWebSocketChannel_h
#if ENABLE(WEB_SOCKETS) && ENABLE(WORKERS)
#include "PlatformString.h"
#include "ThreadableWebSocketChannel.h"
#include "WebSocketChannelClient.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/Threading.h>
namespace WebCore {
class KURL;
class ScriptExecutionContext;
class ThreadableWebSocketChannelClientWrapper;
class WorkerContext;
class WorkerLoaderProxy;
class WorkerRunLoop;
class WorkerThreadableWebSocketChannel : public RefCounted<WorkerThreadableWebSocketChannel>, public ThreadableWebSocketChannel {
WTF_MAKE_FAST_ALLOCATED;
public:
static PassRefPtr<ThreadableWebSocketChannel> create(WorkerContext* workerContext, WebSocketChannelClient* client, const String& taskMode, const KURL& url, const String& protocol)
{
return adoptRef(new WorkerThreadableWebSocketChannel(workerContext, client, taskMode, url, protocol));
}
virtual ~WorkerThreadableWebSocketChannel();
virtual void connect();
virtual bool send(const String& message);
virtual unsigned long bufferedAmount() const;
virtual void close();
virtual void disconnect(); // Will suppress didClose().
virtual void suspend();
virtual void resume();
using RefCounted<WorkerThreadableWebSocketChannel>::ref;
using RefCounted<WorkerThreadableWebSocketChannel>::deref;
protected:
virtual void refThreadableWebSocketChannel() { ref(); }
virtual void derefThreadableWebSocketChannel() { deref(); }
private:
// Generated by the bridge. The Peer and its bridge should have identical
// lifetimes.
class Peer : public WebSocketChannelClient {
WTF_MAKE_NONCOPYABLE(Peer); WTF_MAKE_FAST_ALLOCATED;
public:
static Peer* create(RefPtr<ThreadableWebSocketChannelClientWrapper> clientWrapper, WorkerLoaderProxy& loaderProxy, ScriptExecutionContext* context, const String& taskMode, const KURL& url, const String& protocol)
{
return new Peer(clientWrapper, loaderProxy, context, taskMode, url, protocol);
}
~Peer();
void connect();
void send(const String& message);
void bufferedAmount();
void close();
void disconnect();
void suspend();
void resume();
virtual void didConnect();
virtual void didReceiveMessage(const String& message);
virtual void didClose(unsigned long unhandledBufferedAmount);
private:
Peer(RefPtr<ThreadableWebSocketChannelClientWrapper>, WorkerLoaderProxy&, ScriptExecutionContext*, const String& taskMode, const KURL&, const String& protocol);
RefPtr<ThreadableWebSocketChannelClientWrapper> m_workerClientWrapper;
WorkerLoaderProxy& m_loaderProxy;
RefPtr<ThreadableWebSocketChannel> m_mainWebSocketChannel;
String m_taskMode;
};
// Bridge for Peer. Running on the worker thread.
class Bridge : public RefCounted<Bridge> {
public:
static PassRefPtr<Bridge> create(PassRefPtr<ThreadableWebSocketChannelClientWrapper> workerClientWrapper, PassRefPtr<WorkerContext> workerContext, const String& taskMode, const KURL& url, const String& protocol)
{
return adoptRef(new Bridge(workerClientWrapper, workerContext, taskMode, url, protocol));
}
~Bridge();
void connect();
bool send(const String& message);
unsigned long bufferedAmount();
void close();
void disconnect();
void suspend();
void resume();
using RefCounted<Bridge>::ref;
using RefCounted<Bridge>::deref;
private:
Bridge(PassRefPtr<ThreadableWebSocketChannelClientWrapper>, PassRefPtr<WorkerContext>, const String& taskMode, const KURL&, const String& protocol);
static void setWebSocketChannel(ScriptExecutionContext*, Bridge* thisPtr, Peer*, RefPtr<ThreadableWebSocketChannelClientWrapper>);
// Executed on the main thread to create a Peer for this bridge.
static void mainThreadCreateWebSocketChannel(ScriptExecutionContext*, Bridge* thisPtr, RefPtr<ThreadableWebSocketChannelClientWrapper>, const String& taskMode, const KURL&, const String& protocol);
// Executed on the worker context's thread.
void clearClientWrapper();
void setMethodNotCompleted();
void waitForMethodCompletion();
RefPtr<ThreadableWebSocketChannelClientWrapper> m_workerClientWrapper;
RefPtr<WorkerContext> m_workerContext;
WorkerLoaderProxy& m_loaderProxy;
String m_taskMode;
Peer* m_peer;
};
WorkerThreadableWebSocketChannel(WorkerContext*, WebSocketChannelClient*, const String& taskMode, const KURL&, const String& protocol);
static void mainThreadConnect(ScriptExecutionContext*, Peer*);
static void mainThreadSend(ScriptExecutionContext*, Peer*, const String& message);
static void mainThreadBufferedAmount(ScriptExecutionContext*, Peer*);
static void mainThreadClose(ScriptExecutionContext*, Peer*);
static void mainThreadDestroy(ScriptExecutionContext*, Peer*);
static void mainThreadSuspend(ScriptExecutionContext*, Peer*);
static void mainThreadResume(ScriptExecutionContext*, Peer*);
RefPtr<WorkerContext> m_workerContext;
RefPtr<ThreadableWebSocketChannelClientWrapper> m_workerClientWrapper;
RefPtr<Bridge> m_bridge;
};
} // namespace WebCore
#endif // ENABLE(WEB_SOCKETS)
#endif // WorkerThreadableWebSocketChannel_h
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