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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_FILTER_H_
#define CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_FILTER_H_
#include <set>
#include <string>
#include "ipc/message_filter.h"
struct DevToolsMessageData;
namespace base {
class MessageLoop;
class MessageLoopProxy;
}
namespace content {
// DevToolsAgentFilter is registered as an IPC filter in order to be able to
// dispatch messages while on the IO thread. The reason for that is that while
// debugging, Render thread is being held by the v8 and hence no messages
// are being dispatched there. While holding the thread in a tight loop,
// v8 provides thread-safe Api for controlling debugger. In our case v8's Api
// is being used from this communication agent on the IO thread.
class DevToolsAgentFilter : public IPC::MessageFilter {
public:
// There is a single instance of this class instantiated by the RenderThread.
DevToolsAgentFilter();
static void SendRpcMessage(const DevToolsMessageData& data);
// IPC::MessageFilter override. Called on IO thread.
bool OnMessageReceived(const IPC::Message& message) override;
// Called on the main thread.
void AddEmbeddedWorkerRouteOnMainThread(int32 routing_id);
void RemoveEmbeddedWorkerRouteOnMainThread(int32 routing_id);
protected:
~DevToolsAgentFilter() override;
private:
void OnDispatchOnInspectorBackend(const std::string& message);
// Called on IO thread
void AddEmbeddedWorkerRoute(int32 routing_id);
void RemoveEmbeddedWorkerRoute(int32 routing_id);
base::MessageLoop* render_thread_loop_;
// Proxy to the IO message loop.
scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
int current_routing_id_;
std::set<int32> embedded_worker_routes_;
DISALLOW_COPY_AND_ASSIGN(DevToolsAgentFilter);
};
} // namespace content
#endif // CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_FILTER_H_
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