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| 1 // Copyright 2015 the V8 project 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 "src/inspector/V8ProfilerAgentImpl.h" | |
| 6 | |
| 7 #include "src/base/atomicops.h" | |
| 8 #include "src/inspector/StringUtil.h" | |
| 9 #include "src/inspector/V8Debugger.h" | |
| 10 #include "src/inspector/V8InspectorImpl.h" | |
| 11 #include "src/inspector/V8InspectorSessionImpl.h" | |
| 12 #include "src/inspector/V8StackTraceImpl.h" | |
| 13 #include "src/inspector/protocol/Protocol.h" | |
| 14 | |
| 15 #include "include/v8-profiler.h" | |
| 16 | |
| 17 #include <vector> | |
| 18 | |
| 19 namespace v8_inspector { | |
| 20 | |
| 21 namespace ProfilerAgentState { | |
| 22 static const char samplingInterval[] = "samplingInterval"; | |
| 23 static const char userInitiatedProfiling[] = "userInitiatedProfiling"; | |
| 24 static const char profilerEnabled[] = "profilerEnabled"; | |
| 25 } | |
| 26 | |
| 27 namespace { | |
| 28 | |
| 29 std::unique_ptr<protocol::Array<protocol::Profiler::PositionTickInfo>> | |
| 30 buildInspectorObjectForPositionTicks(const v8::CpuProfileNode* node) { | |
| 31 unsigned lineCount = node->GetHitLineCount(); | |
| 32 if (!lineCount) return nullptr; | |
| 33 auto array = protocol::Array<protocol::Profiler::PositionTickInfo>::create(); | |
| 34 std::vector<v8::CpuProfileNode::LineTick> entries(lineCount); | |
| 35 if (node->GetLineTicks(&entries[0], lineCount)) { | |
| 36 for (unsigned i = 0; i < lineCount; i++) { | |
| 37 std::unique_ptr<protocol::Profiler::PositionTickInfo> line = | |
| 38 protocol::Profiler::PositionTickInfo::create() | |
| 39 .setLine(entries[i].line) | |
| 40 .setTicks(entries[i].hit_count) | |
| 41 .build(); | |
| 42 array->addItem(std::move(line)); | |
| 43 } | |
| 44 } | |
| 45 return array; | |
| 46 } | |
| 47 | |
| 48 std::unique_ptr<protocol::Profiler::ProfileNode> buildInspectorObjectFor( | |
| 49 v8::Isolate* isolate, const v8::CpuProfileNode* node) { | |
| 50 v8::HandleScope handleScope(isolate); | |
| 51 auto callFrame = | |
| 52 protocol::Runtime::CallFrame::create() | |
| 53 .setFunctionName(toProtocolString(node->GetFunctionName())) | |
| 54 .setScriptId(String16::fromInteger(node->GetScriptId())) | |
| 55 .setUrl(toProtocolString(node->GetScriptResourceName())) | |
| 56 .setLineNumber(node->GetLineNumber() - 1) | |
| 57 .setColumnNumber(node->GetColumnNumber() - 1) | |
| 58 .build(); | |
| 59 auto result = protocol::Profiler::ProfileNode::create() | |
| 60 .setCallFrame(std::move(callFrame)) | |
| 61 .setHitCount(node->GetHitCount()) | |
| 62 .setId(node->GetNodeId()) | |
| 63 .build(); | |
| 64 | |
| 65 const int childrenCount = node->GetChildrenCount(); | |
| 66 if (childrenCount) { | |
| 67 auto children = protocol::Array<int>::create(); | |
| 68 for (int i = 0; i < childrenCount; i++) | |
| 69 children->addItem(node->GetChild(i)->GetNodeId()); | |
| 70 result->setChildren(std::move(children)); | |
| 71 } | |
| 72 | |
| 73 const char* deoptReason = node->GetBailoutReason(); | |
| 74 if (deoptReason && deoptReason[0] && strcmp(deoptReason, "no reason")) | |
| 75 result->setDeoptReason(deoptReason); | |
| 76 | |
| 77 auto positionTicks = buildInspectorObjectForPositionTicks(node); | |
| 78 if (positionTicks) result->setPositionTicks(std::move(positionTicks)); | |
| 79 | |
| 80 return result; | |
| 81 } | |
| 82 | |
| 83 std::unique_ptr<protocol::Array<int>> buildInspectorObjectForSamples( | |
| 84 v8::CpuProfile* v8profile) { | |
| 85 auto array = protocol::Array<int>::create(); | |
| 86 int count = v8profile->GetSamplesCount(); | |
| 87 for (int i = 0; i < count; i++) | |
| 88 array->addItem(v8profile->GetSample(i)->GetNodeId()); | |
| 89 return array; | |
| 90 } | |
| 91 | |
| 92 std::unique_ptr<protocol::Array<int>> buildInspectorObjectForTimestamps( | |
| 93 v8::CpuProfile* v8profile) { | |
| 94 auto array = protocol::Array<int>::create(); | |
| 95 int count = v8profile->GetSamplesCount(); | |
| 96 uint64_t lastTime = v8profile->GetStartTime(); | |
| 97 for (int i = 0; i < count; i++) { | |
| 98 uint64_t ts = v8profile->GetSampleTimestamp(i); | |
| 99 array->addItem(static_cast<int>(ts - lastTime)); | |
| 100 lastTime = ts; | |
| 101 } | |
| 102 return array; | |
| 103 } | |
| 104 | |
| 105 void flattenNodesTree(v8::Isolate* isolate, const v8::CpuProfileNode* node, | |
| 106 protocol::Array<protocol::Profiler::ProfileNode>* list) { | |
| 107 list->addItem(buildInspectorObjectFor(isolate, node)); | |
| 108 const int childrenCount = node->GetChildrenCount(); | |
| 109 for (int i = 0; i < childrenCount; i++) | |
| 110 flattenNodesTree(isolate, node->GetChild(i), list); | |
| 111 } | |
| 112 | |
| 113 std::unique_ptr<protocol::Profiler::Profile> createCPUProfile( | |
| 114 v8::Isolate* isolate, v8::CpuProfile* v8profile) { | |
| 115 auto nodes = protocol::Array<protocol::Profiler::ProfileNode>::create(); | |
| 116 flattenNodesTree(isolate, v8profile->GetTopDownRoot(), nodes.get()); | |
| 117 return protocol::Profiler::Profile::create() | |
| 118 .setNodes(std::move(nodes)) | |
| 119 .setStartTime(static_cast<double>(v8profile->GetStartTime())) | |
| 120 .setEndTime(static_cast<double>(v8profile->GetEndTime())) | |
| 121 .setSamples(buildInspectorObjectForSamples(v8profile)) | |
| 122 .setTimeDeltas(buildInspectorObjectForTimestamps(v8profile)) | |
| 123 .build(); | |
| 124 } | |
| 125 | |
| 126 std::unique_ptr<protocol::Debugger::Location> currentDebugLocation( | |
| 127 V8InspectorImpl* inspector) { | |
| 128 std::unique_ptr<V8StackTraceImpl> callStack = | |
| 129 inspector->debugger()->captureStackTrace(false /* fullStack */); | |
| 130 auto location = protocol::Debugger::Location::create() | |
| 131 .setScriptId(toString16(callStack->topScriptId())) | |
| 132 .setLineNumber(callStack->topLineNumber()) | |
| 133 .build(); | |
| 134 location->setColumnNumber(callStack->topColumnNumber()); | |
| 135 return location; | |
| 136 } | |
| 137 | |
| 138 volatile int s_lastProfileId = 0; | |
| 139 | |
| 140 } // namespace | |
| 141 | |
| 142 class V8ProfilerAgentImpl::ProfileDescriptor { | |
| 143 public: | |
| 144 ProfileDescriptor(const String16& id, const String16& title) | |
| 145 : m_id(id), m_title(title) {} | |
| 146 String16 m_id; | |
| 147 String16 m_title; | |
| 148 }; | |
| 149 | |
| 150 V8ProfilerAgentImpl::V8ProfilerAgentImpl( | |
| 151 V8InspectorSessionImpl* session, protocol::FrontendChannel* frontendChannel, | |
| 152 protocol::DictionaryValue* state) | |
| 153 : m_session(session), | |
| 154 m_isolate(m_session->inspector()->isolate()), | |
| 155 m_profiler(nullptr), | |
| 156 m_state(state), | |
| 157 m_frontend(frontendChannel), | |
| 158 m_enabled(false), | |
| 159 m_recordingCPUProfile(false) {} | |
| 160 | |
| 161 V8ProfilerAgentImpl::~V8ProfilerAgentImpl() { | |
| 162 if (m_profiler) m_profiler->Dispose(); | |
| 163 } | |
| 164 | |
| 165 void V8ProfilerAgentImpl::consoleProfile(const String16& title) { | |
| 166 if (!m_enabled) return; | |
| 167 String16 id = nextProfileId(); | |
| 168 m_startedProfiles.push_back(ProfileDescriptor(id, title)); | |
| 169 startProfiling(id); | |
| 170 m_frontend.consoleProfileStarted( | |
| 171 id, currentDebugLocation(m_session->inspector()), title); | |
| 172 } | |
| 173 | |
| 174 void V8ProfilerAgentImpl::consoleProfileEnd(const String16& title) { | |
| 175 if (!m_enabled) return; | |
| 176 String16 id; | |
| 177 String16 resolvedTitle; | |
| 178 // Take last started profile if no title was passed. | |
| 179 if (title.isEmpty()) { | |
| 180 if (m_startedProfiles.empty()) return; | |
| 181 id = m_startedProfiles.back().m_id; | |
| 182 resolvedTitle = m_startedProfiles.back().m_title; | |
| 183 m_startedProfiles.pop_back(); | |
| 184 } else { | |
| 185 for (size_t i = 0; i < m_startedProfiles.size(); i++) { | |
| 186 if (m_startedProfiles[i].m_title == title) { | |
| 187 resolvedTitle = title; | |
| 188 id = m_startedProfiles[i].m_id; | |
| 189 m_startedProfiles.erase(m_startedProfiles.begin() + i); | |
| 190 break; | |
| 191 } | |
| 192 } | |
| 193 if (id.isEmpty()) return; | |
| 194 } | |
| 195 std::unique_ptr<protocol::Profiler::Profile> profile = | |
| 196 stopProfiling(id, true); | |
| 197 if (!profile) return; | |
| 198 std::unique_ptr<protocol::Debugger::Location> location = | |
| 199 currentDebugLocation(m_session->inspector()); | |
| 200 m_frontend.consoleProfileFinished(id, std::move(location), std::move(profile), | |
| 201 resolvedTitle); | |
| 202 } | |
| 203 | |
| 204 void V8ProfilerAgentImpl::enable(ErrorString*) { | |
| 205 if (m_enabled) return; | |
| 206 m_enabled = true; | |
| 207 DCHECK(!m_profiler); | |
| 208 m_profiler = v8::CpuProfiler::New(m_isolate); | |
| 209 m_state->setBoolean(ProfilerAgentState::profilerEnabled, true); | |
| 210 } | |
| 211 | |
| 212 void V8ProfilerAgentImpl::disable(ErrorString* errorString) { | |
| 213 if (!m_enabled) return; | |
| 214 for (size_t i = m_startedProfiles.size(); i > 0; --i) | |
| 215 stopProfiling(m_startedProfiles[i - 1].m_id, false); | |
| 216 m_startedProfiles.clear(); | |
| 217 stop(nullptr, nullptr); | |
| 218 m_profiler->Dispose(); | |
| 219 m_profiler = nullptr; | |
| 220 m_enabled = false; | |
| 221 m_state->setBoolean(ProfilerAgentState::profilerEnabled, false); | |
| 222 } | |
| 223 | |
| 224 void V8ProfilerAgentImpl::setSamplingInterval(ErrorString* error, | |
| 225 int interval) { | |
| 226 if (m_recordingCPUProfile) { | |
| 227 *error = "Cannot change sampling interval when profiling."; | |
| 228 return; | |
| 229 } | |
| 230 m_state->setInteger(ProfilerAgentState::samplingInterval, interval); | |
| 231 m_profiler->SetSamplingInterval(interval); | |
| 232 } | |
| 233 | |
| 234 void V8ProfilerAgentImpl::restore() { | |
| 235 DCHECK(!m_enabled); | |
| 236 if (!m_state->booleanProperty(ProfilerAgentState::profilerEnabled, false)) | |
| 237 return; | |
| 238 m_enabled = true; | |
| 239 DCHECK(!m_profiler); | |
| 240 m_profiler = v8::CpuProfiler::New(m_isolate); | |
| 241 int interval = 0; | |
| 242 m_state->getInteger(ProfilerAgentState::samplingInterval, &interval); | |
| 243 if (interval) m_profiler->SetSamplingInterval(interval); | |
| 244 if (m_state->booleanProperty(ProfilerAgentState::userInitiatedProfiling, | |
| 245 false)) { | |
| 246 ErrorString error; | |
| 247 start(&error); | |
| 248 } | |
| 249 } | |
| 250 | |
| 251 void V8ProfilerAgentImpl::start(ErrorString* error) { | |
| 252 if (m_recordingCPUProfile) return; | |
| 253 if (!m_enabled) { | |
| 254 *error = "Profiler is not enabled"; | |
| 255 return; | |
| 256 } | |
| 257 m_recordingCPUProfile = true; | |
| 258 m_frontendInitiatedProfileId = nextProfileId(); | |
| 259 startProfiling(m_frontendInitiatedProfileId); | |
| 260 m_state->setBoolean(ProfilerAgentState::userInitiatedProfiling, true); | |
| 261 } | |
| 262 | |
| 263 void V8ProfilerAgentImpl::stop( | |
| 264 ErrorString* errorString, | |
| 265 std::unique_ptr<protocol::Profiler::Profile>* profile) { | |
| 266 if (!m_recordingCPUProfile) { | |
| 267 if (errorString) *errorString = "No recording profiles found"; | |
| 268 return; | |
| 269 } | |
| 270 m_recordingCPUProfile = false; | |
| 271 std::unique_ptr<protocol::Profiler::Profile> cpuProfile = | |
| 272 stopProfiling(m_frontendInitiatedProfileId, !!profile); | |
| 273 if (profile) { | |
| 274 *profile = std::move(cpuProfile); | |
| 275 if (!profile->get() && errorString) *errorString = "Profile is not found"; | |
| 276 } | |
| 277 m_frontendInitiatedProfileId = String16(); | |
| 278 m_state->setBoolean(ProfilerAgentState::userInitiatedProfiling, false); | |
| 279 } | |
| 280 | |
| 281 String16 V8ProfilerAgentImpl::nextProfileId() { | |
| 282 return String16::fromInteger( | |
| 283 v8::base::NoBarrier_AtomicIncrement(&s_lastProfileId, 1)); | |
| 284 } | |
| 285 | |
| 286 void V8ProfilerAgentImpl::startProfiling(const String16& title) { | |
| 287 v8::HandleScope handleScope(m_isolate); | |
| 288 m_profiler->StartProfiling(toV8String(m_isolate, title), true); | |
| 289 } | |
| 290 | |
| 291 std::unique_ptr<protocol::Profiler::Profile> V8ProfilerAgentImpl::stopProfiling( | |
| 292 const String16& title, bool serialize) { | |
| 293 v8::HandleScope handleScope(m_isolate); | |
| 294 v8::CpuProfile* profile = | |
| 295 m_profiler->StopProfiling(toV8String(m_isolate, title)); | |
| 296 if (!profile) return nullptr; | |
| 297 std::unique_ptr<protocol::Profiler::Profile> result; | |
| 298 if (serialize) result = createCPUProfile(m_isolate, profile); | |
| 299 profile->Delete(); | |
| 300 return result; | |
| 301 } | |
| 302 | |
| 303 bool V8ProfilerAgentImpl::isRecording() const { | |
| 304 return m_recordingCPUProfile || !m_startedProfiles.empty(); | |
| 305 } | |
| 306 | |
| 307 bool V8ProfilerAgentImpl::idleStarted() { | |
| 308 if (m_profiler) m_profiler->SetIdle(true); | |
| 309 return m_profiler; | |
| 310 } | |
| 311 | |
| 312 bool V8ProfilerAgentImpl::idleFinished() { | |
| 313 if (m_profiler) m_profiler->SetIdle(false); | |
| 314 return m_profiler; | |
| 315 } | |
| 316 | |
| 317 void V8ProfilerAgentImpl::collectSample() { | |
| 318 if (m_profiler) m_profiler->CollectSample(); | |
| 319 } | |
| 320 | |
| 321 } // namespace v8_inspector | |
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Chromium Code Reviews
Issue 2338413003:
[inspector] change implementation file extension from cpp to cc (Closed)
