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| 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 #include "content/browser/trace_message_filter.h" | |
| 6 | |
| 7 #include "components/tracing/tracing_messages.h" | |
| 8 #include "content/browser/trace_controller_impl.h" | |
| 9 | |
| 10 namespace content { | |
| 11 | |
| 12 TraceMessageFilter::TraceMessageFilter() : | |
| 13 has_child_(false), | |
| 14 is_awaiting_end_ack_(false), | |
| 15 is_awaiting_buffer_percent_full_ack_(false) { | |
| 16 } | |
| 17 | |
| 18 void TraceMessageFilter::OnFilterAdded(IPC::Channel* channel) { | |
| 19 // Always on IO thread (BrowserMessageFilter guarantee). | |
| 20 BrowserMessageFilter::OnFilterAdded(channel); | |
| 21 } | |
| 22 | |
| 23 void TraceMessageFilter::OnChannelClosing() { | |
| 24 // Always on IO thread (BrowserMessageFilter guarantee). | |
| 25 BrowserMessageFilter::OnChannelClosing(); | |
| 26 | |
| 27 if (has_child_) { | |
| 28 if (is_awaiting_end_ack_) | |
| 29 OnEndTracingAck(std::vector<std::string>()); | |
| 30 | |
| 31 if (is_awaiting_buffer_percent_full_ack_) | |
| 32 OnTraceBufferPercentFullReply(0.0f); | |
| 33 | |
| 34 TraceControllerImpl::GetInstance()->RemoveFilter(this); | |
| 35 } | |
| 36 } | |
| 37 | |
| 38 bool TraceMessageFilter::OnMessageReceived(const IPC::Message& message, | |
| 39 bool* message_was_ok) { | |
| 40 // Always on IO thread (BrowserMessageFilter guarantee). | |
| 41 bool handled = true; | |
| 42 IPC_BEGIN_MESSAGE_MAP_EX(TraceMessageFilter, message, *message_was_ok) | |
| 43 IPC_MESSAGE_HANDLER(TracingHostMsg_ChildSupportsTracing, | |
| 44 OnChildSupportsTracing) | |
| 45 IPC_MESSAGE_HANDLER(TracingHostMsg_EndTracingAck, OnEndTracingAck) | |
| 46 IPC_MESSAGE_HANDLER(TracingHostMsg_TraceDataCollected, | |
| 47 OnTraceDataCollected) | |
| 48 IPC_MESSAGE_HANDLER(TracingHostMsg_TraceNotification, | |
| 49 OnTraceNotification) | |
| 50 IPC_MESSAGE_HANDLER(TracingHostMsg_TraceBufferPercentFullReply, | |
| 51 OnTraceBufferPercentFullReply) | |
| 52 IPC_MESSAGE_UNHANDLED(handled = false) | |
| 53 IPC_END_MESSAGE_MAP_EX() | |
| 54 return handled; | |
| 55 } | |
| 56 | |
| 57 void TraceMessageFilter::SendBeginTracing( | |
| 58 const std::vector<std::string>& included_categories, | |
| 59 const std::vector<std::string>& excluded_categories) { | |
| 60 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 61 Send(new TracingMsg_BeginTracing(included_categories, | |
| 62 excluded_categories, | |
| 63 base::TimeTicks::NowFromSystemTraceTime())); | |
| 64 } | |
| 65 | |
| 66 void TraceMessageFilter::SendEndTracing() { | |
| 67 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 68 DCHECK(!is_awaiting_end_ack_); | |
| 69 is_awaiting_end_ack_ = true; | |
| 70 Send(new TracingMsg_EndTracing); | |
| 71 } | |
| 72 | |
| 73 void TraceMessageFilter::SendGetTraceBufferPercentFull() { | |
| 74 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 75 DCHECK(!is_awaiting_buffer_percent_full_ack_); | |
| 76 is_awaiting_buffer_percent_full_ack_ = true; | |
| 77 Send(new TracingMsg_GetTraceBufferPercentFull); | |
| 78 } | |
| 79 | |
| 80 void TraceMessageFilter::SendSetWatchEvent(const std::string& category_name, | |
| 81 const std::string& event_name) { | |
| 82 Send(new TracingMsg_SetWatchEvent(category_name, event_name)); | |
| 83 } | |
| 84 | |
| 85 void TraceMessageFilter::SendCancelWatchEvent() { | |
| 86 Send(new TracingMsg_CancelWatchEvent); | |
| 87 } | |
| 88 | |
| 89 TraceMessageFilter::~TraceMessageFilter() {} | |
| 90 | |
| 91 void TraceMessageFilter::OnChildSupportsTracing() { | |
| 92 has_child_ = true; | |
| 93 TraceControllerImpl::GetInstance()->AddFilter(this); | |
| 94 } | |
| 95 | |
| 96 void TraceMessageFilter::OnEndTracingAck( | |
| 97 const std::vector<std::string>& known_categories) { | |
| 98 // is_awaiting_end_ack_ should always be true here, but check in case the | |
| 99 // child process is compromised. | |
| 100 if (is_awaiting_end_ack_) { | |
| 101 is_awaiting_end_ack_ = false; | |
| 102 TraceControllerImpl::GetInstance()->OnEndTracingAck(known_categories); | |
| 103 } else { | |
| 104 NOTREACHED(); | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 void TraceMessageFilter::OnTraceDataCollected(const std::string& data) { | |
| 109 scoped_refptr<base::RefCountedString> data_ptr(new base::RefCountedString()); | |
| 110 data_ptr->data() = data; | |
| 111 TraceControllerImpl::GetInstance()->OnTraceDataCollected(data_ptr); | |
| 112 } | |
| 113 | |
| 114 void TraceMessageFilter::OnTraceNotification(int notification) { | |
| 115 TraceControllerImpl::GetInstance()->OnTraceNotification(notification); | |
| 116 } | |
| 117 | |
| 118 void TraceMessageFilter::OnTraceBufferPercentFullReply(float percent_full) { | |
| 119 if (is_awaiting_buffer_percent_full_ack_) { | |
| 120 is_awaiting_buffer_percent_full_ack_ = false; | |
| 121 TraceControllerImpl::GetInstance()->OnTraceBufferPercentFullReply( | |
| 122 percent_full); | |
| 123 } else { | |
| 124 NOTREACHED(); | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 } // namespace content | |
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Chromium Code Reviews
Issue 12149003:
Move tracing code in content\browser to content\browser\tracing now that there's a separate directo… (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/