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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "components/tracing/child/child_trace_message_filter.h" | 5 #include "components/tracing/child/child_trace_message_filter.h" |
6 | 6 |
7 #include <memory> | 7 #include <memory> |
8 | 8 |
9 #include "base/memory/ref_counted_memory.h" | 9 #include "base/memory/ref_counted_memory.h" |
10 #include "base/metrics/statistics_recorder.h" | 10 #include "base/metrics/statistics_recorder.h" |
11 #include "base/trace_event/memory_dump_manager.h" | |
12 #include "base/trace_event/trace_event.h" | 11 #include "base/trace_event/trace_event.h" |
13 #include "components/tracing/common/process_metrics_memory_dump_provider.h" | 12 #include "components/tracing/child/child_memory_dump_manager_delegate_impl.h" |
14 #include "components/tracing/common/tracing_messages.h" | 13 #include "components/tracing/common/tracing_messages.h" |
15 #include "ipc/ipc_channel.h" | 14 #include "ipc/ipc_channel.h" |
16 | 15 |
17 using base::trace_event::MemoryDumpManager; | |
18 using base::trace_event::TraceLog; | 16 using base::trace_event::TraceLog; |
19 | 17 |
20 namespace tracing { | 18 namespace tracing { |
21 | 19 |
22 namespace { | 20 namespace { |
23 | 21 |
24 const int kMinTimeBetweenHistogramChangesInSeconds = 10; | 22 const int kMinTimeBetweenHistogramChangesInSeconds = 10; |
25 | 23 |
26 } // namespace | 24 } // namespace |
27 | 25 |
28 ChildTraceMessageFilter::ChildTraceMessageFilter( | 26 ChildTraceMessageFilter::ChildTraceMessageFilter( |
29 base::SingleThreadTaskRunner* ipc_task_runner) | 27 base::SingleThreadTaskRunner* ipc_task_runner) |
30 : sender_(NULL), ipc_task_runner_(ipc_task_runner) {} | 28 : sender_(NULL), |
| 29 ipc_task_runner_(ipc_task_runner), |
| 30 pending_memory_dump_guid_(0) { |
| 31 } |
31 | 32 |
32 void ChildTraceMessageFilter::OnFilterAdded(IPC::Channel* channel) { | 33 void ChildTraceMessageFilter::OnFilterAdded(IPC::Channel* channel) { |
33 sender_ = channel; | 34 sender_ = channel; |
34 sender_->Send(new TracingHostMsg_ChildSupportsTracing()); | 35 sender_->Send(new TracingHostMsg_ChildSupportsTracing()); |
35 | 36 ChildMemoryDumpManagerDelegateImpl::GetInstance()->SetChildTraceMessageFilter( |
36 #if !defined(OS_LINUX) && !defined(OS_NACL) | 37 this); |
37 // On linux the browser process takes care of dumping process metrics. | |
38 // The child process is not allowed to do so due to BPF sandbox. | |
39 tracing::ProcessMetricsMemoryDumpProvider::RegisterForProcess( | |
40 base::kNullProcessId); | |
41 #endif | |
42 } | 38 } |
43 | 39 |
44 void ChildTraceMessageFilter::SetSenderForTesting(IPC::Sender* sender) { | 40 void ChildTraceMessageFilter::SetSenderForTesting(IPC::Sender* sender) { |
45 sender_ = sender; | 41 sender_ = sender; |
46 } | 42 } |
47 | 43 |
48 void ChildTraceMessageFilter::OnFilterRemoved() { | 44 void ChildTraceMessageFilter::OnFilterRemoved() { |
| 45 ChildMemoryDumpManagerDelegateImpl::GetInstance()->SetChildTraceMessageFilter( |
| 46 nullptr); |
49 sender_ = NULL; | 47 sender_ = NULL; |
50 } | 48 } |
51 | 49 |
52 bool ChildTraceMessageFilter::OnMessageReceived(const IPC::Message& message) { | 50 bool ChildTraceMessageFilter::OnMessageReceived(const IPC::Message& message) { |
53 bool handled = true; | 51 bool handled = true; |
54 IPC_BEGIN_MESSAGE_MAP(ChildTraceMessageFilter, message) | 52 IPC_BEGIN_MESSAGE_MAP(ChildTraceMessageFilter, message) |
55 IPC_MESSAGE_HANDLER(TracingMsg_BeginTracing, OnBeginTracing) | 53 IPC_MESSAGE_HANDLER(TracingMsg_BeginTracing, OnBeginTracing) |
56 IPC_MESSAGE_HANDLER(TracingMsg_EndTracing, OnEndTracing) | 54 IPC_MESSAGE_HANDLER(TracingMsg_EndTracing, OnEndTracing) |
57 IPC_MESSAGE_HANDLER(TracingMsg_CancelTracing, OnCancelTracing) | 55 IPC_MESSAGE_HANDLER(TracingMsg_CancelTracing, OnCancelTracing) |
58 IPC_MESSAGE_HANDLER(TracingMsg_GetTraceLogStatus, OnGetTraceLogStatus) | 56 IPC_MESSAGE_HANDLER(TracingMsg_GetTraceLogStatus, OnGetTraceLogStatus) |
| 57 IPC_MESSAGE_HANDLER(TracingMsg_ProcessMemoryDumpRequest, |
| 58 OnProcessMemoryDumpRequest) |
| 59 IPC_MESSAGE_HANDLER(TracingMsg_GlobalMemoryDumpResponse, |
| 60 OnGlobalMemoryDumpResponse) |
59 IPC_MESSAGE_HANDLER(TracingMsg_SetUMACallback, OnSetUMACallback) | 61 IPC_MESSAGE_HANDLER(TracingMsg_SetUMACallback, OnSetUMACallback) |
60 IPC_MESSAGE_HANDLER(TracingMsg_ClearUMACallback, OnClearUMACallback) | 62 IPC_MESSAGE_HANDLER(TracingMsg_ClearUMACallback, OnClearUMACallback) |
61 IPC_MESSAGE_UNHANDLED(handled = false) | 63 IPC_MESSAGE_UNHANDLED(handled = false) |
62 IPC_END_MESSAGE_MAP() | 64 IPC_END_MESSAGE_MAP() |
63 return handled; | 65 return handled; |
64 } | 66 } |
65 | 67 |
66 ChildTraceMessageFilter::~ChildTraceMessageFilter() {} | 68 ChildTraceMessageFilter::~ChildTraceMessageFilter() {} |
67 | 69 |
68 void ChildTraceMessageFilter::OnBeginTracing( | 70 void ChildTraceMessageFilter::OnBeginTracing( |
69 const std::string& trace_config_str, | 71 const std::string& trace_config_str, |
70 base::TimeTicks browser_time, | 72 base::TimeTicks browser_time, |
71 uint64_t tracing_process_id) { | 73 uint64_t tracing_process_id) { |
72 #if defined(__native_client__) | 74 #if defined(__native_client__) |
73 // NaCl and system times are offset by a bit, so subtract some time from | 75 // NaCl and system times are offset by a bit, so subtract some time from |
74 // the captured timestamps. The value might be off by a bit due to messaging | 76 // the captured timestamps. The value might be off by a bit due to messaging |
75 // latency. | 77 // latency. |
76 base::TimeDelta time_offset = base::TimeTicks::Now() - browser_time; | 78 base::TimeDelta time_offset = base::TimeTicks::Now() - browser_time; |
77 TraceLog::GetInstance()->SetTimeOffset(time_offset); | 79 TraceLog::GetInstance()->SetTimeOffset(time_offset); |
78 #endif | 80 #endif |
79 MemoryDumpManager::GetInstance()->set_tracing_process_id(tracing_process_id); | 81 ChildMemoryDumpManagerDelegateImpl::GetInstance()->set_tracing_process_id( |
| 82 tracing_process_id); |
80 TraceLog::GetInstance()->SetEnabled( | 83 TraceLog::GetInstance()->SetEnabled( |
81 base::trace_event::TraceConfig(trace_config_str), | 84 base::trace_event::TraceConfig(trace_config_str), |
82 base::trace_event::TraceLog::RECORDING_MODE); | 85 base::trace_event::TraceLog::RECORDING_MODE); |
83 } | 86 } |
84 | 87 |
85 void ChildTraceMessageFilter::OnEndTracing() { | 88 void ChildTraceMessageFilter::OnEndTracing() { |
86 TraceLog::GetInstance()->SetDisabled(); | 89 TraceLog::GetInstance()->SetDisabled(); |
87 | 90 |
88 // Flush will generate one or more callbacks to OnTraceDataCollected | 91 // Flush will generate one or more callbacks to OnTraceDataCollected |
89 // synchronously or asynchronously. EndTracingAck will be sent in the last | 92 // synchronously or asynchronously. EndTracingAck will be sent in the last |
90 // OnTraceDataCollected. We are already on the IO thread, so the | 93 // OnTraceDataCollected. We are already on the IO thread, so the |
91 // OnTraceDataCollected calls will not be deferred. | 94 // OnTraceDataCollected calls will not be deferred. |
92 TraceLog::GetInstance()->Flush( | 95 TraceLog::GetInstance()->Flush( |
93 base::Bind(&ChildTraceMessageFilter::OnTraceDataCollected, this)); | 96 base::Bind(&ChildTraceMessageFilter::OnTraceDataCollected, this)); |
94 | 97 |
95 MemoryDumpManager::GetInstance()->set_tracing_process_id( | 98 ChildMemoryDumpManagerDelegateImpl::GetInstance()->set_tracing_process_id( |
96 MemoryDumpManager::kInvalidTracingProcessId); | 99 base::trace_event::MemoryDumpManager::kInvalidTracingProcessId); |
97 } | 100 } |
98 | 101 |
99 void ChildTraceMessageFilter::OnCancelTracing() { | 102 void ChildTraceMessageFilter::OnCancelTracing() { |
100 TraceLog::GetInstance()->CancelTracing( | 103 TraceLog::GetInstance()->CancelTracing( |
101 base::Bind(&ChildTraceMessageFilter::OnTraceDataCollected, this)); | 104 base::Bind(&ChildTraceMessageFilter::OnTraceDataCollected, this)); |
102 } | 105 } |
103 | 106 |
104 void ChildTraceMessageFilter::OnGetTraceLogStatus() { | 107 void ChildTraceMessageFilter::OnGetTraceLogStatus() { |
105 sender_->Send(new TracingHostMsg_TraceLogStatusReply( | 108 sender_->Send(new TracingHostMsg_TraceLogStatusReply( |
106 TraceLog::GetInstance()->GetStatus())); | 109 TraceLog::GetInstance()->GetStatus())); |
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119 sender_->Send(new TracingHostMsg_TraceDataCollected( | 122 sender_->Send(new TracingHostMsg_TraceDataCollected( |
120 events_str_ptr->data())); | 123 events_str_ptr->data())); |
121 } | 124 } |
122 if (!has_more_events) { | 125 if (!has_more_events) { |
123 std::vector<std::string> category_groups; | 126 std::vector<std::string> category_groups; |
124 TraceLog::GetInstance()->GetKnownCategoryGroups(&category_groups); | 127 TraceLog::GetInstance()->GetKnownCategoryGroups(&category_groups); |
125 sender_->Send(new TracingHostMsg_EndTracingAck(category_groups)); | 128 sender_->Send(new TracingHostMsg_EndTracingAck(category_groups)); |
126 } | 129 } |
127 } | 130 } |
128 | 131 |
| 132 // Sent by the Browser's MemoryDumpManager when coordinating a global dump. |
| 133 void ChildTraceMessageFilter::OnProcessMemoryDumpRequest( |
| 134 const base::trace_event::MemoryDumpRequestArgs& args) { |
| 135 ChildMemoryDumpManagerDelegateImpl::GetInstance()->CreateProcessDump( |
| 136 args, |
| 137 base::Bind(&ChildTraceMessageFilter::OnProcessMemoryDumpDone, this)); |
| 138 } |
| 139 |
| 140 void ChildTraceMessageFilter::OnProcessMemoryDumpDone(uint64_t dump_guid, |
| 141 bool success) { |
| 142 sender_->Send( |
| 143 new TracingHostMsg_ProcessMemoryDumpResponse(dump_guid, success)); |
| 144 } |
| 145 |
| 146 // Initiates a dump request, asking the Browser's MemoryDumpManager to |
| 147 // coordinate a global memory dump. The Browser's MDM will answer back with a |
| 148 // MemoryDumpResponse when all the child processes (including this one) have |
| 149 // dumped, or with a NACK (|success| == false) if the dump failed (e.g., due to |
| 150 // a collision with a concurrent request from another child process). |
| 151 void ChildTraceMessageFilter::SendGlobalMemoryDumpRequest( |
| 152 const base::trace_event::MemoryDumpRequestArgs& args, |
| 153 const base::trace_event::MemoryDumpCallback& callback) { |
| 154 // If there is already another dump request pending from this child process, |
| 155 // there is no point bothering the Browser's MemoryDumpManager. |
| 156 if (pending_memory_dump_guid_) { |
| 157 if (!callback.is_null()) |
| 158 callback.Run(args.dump_guid, false); |
| 159 return; |
| 160 } |
| 161 |
| 162 pending_memory_dump_guid_ = args.dump_guid; |
| 163 pending_memory_dump_callback_ = callback; |
| 164 sender_->Send(new TracingHostMsg_GlobalMemoryDumpRequest(args)); |
| 165 } |
| 166 |
| 167 // Sent by the Browser's MemoryDumpManager in response of a dump request |
| 168 // initiated by this child process. |
| 169 void ChildTraceMessageFilter::OnGlobalMemoryDumpResponse(uint64_t dump_guid, |
| 170 bool success) { |
| 171 DCHECK_NE(0U, pending_memory_dump_guid_); |
| 172 pending_memory_dump_guid_ = 0; |
| 173 if (pending_memory_dump_callback_.is_null()) |
| 174 return; |
| 175 pending_memory_dump_callback_.Run(dump_guid, success); |
| 176 } |
| 177 |
129 void ChildTraceMessageFilter::OnHistogramChanged( | 178 void ChildTraceMessageFilter::OnHistogramChanged( |
130 const std::string& histogram_name, | 179 const std::string& histogram_name, |
131 base::Histogram::Sample reference_lower_value, | 180 base::Histogram::Sample reference_lower_value, |
132 base::Histogram::Sample reference_upper_value, | 181 base::Histogram::Sample reference_upper_value, |
133 bool repeat, | 182 bool repeat, |
134 base::Histogram::Sample actual_value) { | 183 base::Histogram::Sample actual_value) { |
135 if (actual_value < reference_lower_value || | 184 if (actual_value < reference_lower_value || |
136 actual_value > reference_upper_value) { | 185 actual_value > reference_upper_value) { |
137 if (!repeat) { | 186 if (!repeat) { |
138 ipc_task_runner_->PostTask( | 187 ipc_task_runner_->PostTask( |
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218 } | 267 } |
219 } | 268 } |
220 | 269 |
221 void ChildTraceMessageFilter::OnClearUMACallback( | 270 void ChildTraceMessageFilter::OnClearUMACallback( |
222 const std::string& histogram_name) { | 271 const std::string& histogram_name) { |
223 histogram_last_changed_ = base::Time(); | 272 histogram_last_changed_ = base::Time(); |
224 base::StatisticsRecorder::ClearCallback(histogram_name); | 273 base::StatisticsRecorder::ClearCallback(histogram_name); |
225 } | 274 } |
226 | 275 |
227 } // namespace tracing | 276 } // namespace tracing |
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