1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef COMPONENTS_TRACING_CHILD_TRACE_MESSAGE_FILTER_H_ 6#define COMPONENTS_TRACING_CHILD_TRACE_MESSAGE_FILTER_H_ 7 8#include "base/bind.h" 9#include "base/memory/ref_counted_memory.h" 10#include "ipc/message_filter.h" 11 12namespace base { 13class MessageLoopProxy; 14} 15 16namespace tracing { 17 18// This class sends and receives trace messages on child processes. 19class ChildTraceMessageFilter : public IPC::MessageFilter { 20 public: 21 explicit ChildTraceMessageFilter(base::MessageLoopProxy* ipc_message_loop); 22 23 // IPC::MessageFilter implementation. 24 virtual void OnFilterAdded(IPC::Sender* sender) OVERRIDE; 25 virtual void OnFilterRemoved() OVERRIDE; 26 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 27 28 protected: 29 virtual ~ChildTraceMessageFilter(); 30 31 private: 32 // Message handlers. 33 void OnBeginTracing(const std::string& category_filter_str, 34 base::TimeTicks browser_time, 35 int options); 36 void OnEndTracing(); 37 void OnEnableMonitoring(const std::string& category_filter_str, 38 base::TimeTicks browser_time, 39 int options); 40 void OnDisableMonitoring(); 41 void OnCaptureMonitoringSnapshot(); 42 void OnGetTraceBufferPercentFull(); 43 void OnSetWatchEvent(const std::string& category_name, 44 const std::string& event_name); 45 void OnCancelWatchEvent(); 46 void OnWatchEventMatched(); 47 48 // Callback from trace subsystem. 49 void OnTraceDataCollected( 50 const scoped_refptr<base::RefCountedString>& events_str_ptr, 51 bool has_more_events); 52 53 void OnMonitoringTraceDataCollected( 54 const scoped_refptr<base::RefCountedString>& events_str_ptr, 55 bool has_more_events); 56 57 IPC::Sender* sender_; 58 base::MessageLoopProxy* ipc_message_loop_; 59 60 DISALLOW_COPY_AND_ASSIGN(ChildTraceMessageFilter); 61}; 62 63} // namespace tracing 64 65#endif // COMPONENTS_TRACING_CHILD_TRACE_MESSAGE_FILTER_H_ 66