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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/inspector/Atomics.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 #include <v8-profiler.h> | |
| 15 | |
| 16 #include <vector> | |
| 17 | |
| 18 #define ENSURE_V8_VERSION(major, minor) \ | |
| 19 (V8_MAJOR_VERSION * 1000 + V8_MINOR_VERSION >= (major) * 1000 + (minor)) | |
| 20 | |
| 21 namespace v8_inspector { | |
| 22 | |
| 23 namespace ProfilerAgentState { | |
| 24 static const char samplingInterval[] = "samplingInterval"; | |
| 25 static const char userInitiatedProfiling[] = "userInitiatedProfiling"; | |
| 26 static const char profilerEnabled[] = "profilerEnabled"; | |
| 27 } | |
| 28 | |
| 29 namespace { | |
| 30 | |
| 31 std::unique_ptr<protocol::Array<protocol::Profiler::PositionTickInfo>> buildInsp
ectorObjectForPositionTicks(const v8::CpuProfileNode* node) | |
| 32 { | |
| 33 unsigned lineCount = node->GetHitLineCount(); | |
| 34 if (!lineCount) | |
| 35 return nullptr; | |
| 36 auto array = protocol::Array<protocol::Profiler::PositionTickInfo>::create()
; | |
| 37 std::vector<v8::CpuProfileNode::LineTick> entries(lineCount); | |
| 38 if (node->GetLineTicks(&entries[0], lineCount)) { | |
| 39 for (unsigned i = 0; i < lineCount; i++) { | |
| 40 std::unique_ptr<protocol::Profiler::PositionTickInfo> line = protoco
l::Profiler::PositionTickInfo::create() | |
| 41 .setLine(entries[i].line) | |
| 42 .setTicks(entries[i].hit_count).build(); | |
| 43 array->addItem(std::move(line)); | |
| 44 } | |
| 45 } | |
| 46 return array; | |
| 47 } | |
| 48 | |
| 49 std::unique_ptr<protocol::Profiler::ProfileNode> buildInspectorObjectFor(v8::Iso
late* isolate, const v8::CpuProfileNode* node) | |
| 50 { | |
| 51 v8::HandleScope handleScope(isolate); | |
| 52 auto callFrame = 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()).build(); | |
| 63 | |
| 64 const int childrenCount = node->GetChildrenCount(); | |
| 65 if (childrenCount) { | |
| 66 auto children = protocol::Array<int>::create(); | |
| 67 for (int i = 0; i < childrenCount; i++) | |
| 68 children->addItem(node->GetChild(i)->GetNodeId()); | |
| 69 result->setChildren(std::move(children)); | |
| 70 } | |
| 71 | |
| 72 const char* deoptReason = node->GetBailoutReason(); | |
| 73 if (deoptReason && deoptReason[0] && strcmp(deoptReason, "no reason")) | |
| 74 result->setDeoptReason(deoptReason); | |
| 75 | |
| 76 auto positionTicks = buildInspectorObjectForPositionTicks(node); | |
| 77 if (positionTicks) | |
| 78 result->setPositionTicks(std::move(positionTicks)); | |
| 79 | |
| 80 return result; | |
| 81 } | |
| 82 | |
| 83 std::unique_ptr<protocol::Array<int>> buildInspectorObjectForSamples(v8::CpuProf
ile* v8profile) | |
| 84 { | |
| 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(v8::CpuP
rofile* v8profile) | |
| 93 { | |
| 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, prot
ocol::Array<protocol::Profiler::ProfileNode>* list) | |
| 106 { | |
| 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(v8::Isolate* isola
te, v8::CpuProfile* v8profile) | |
| 114 { | |
| 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)).build(); | |
| 123 } | |
| 124 | |
| 125 std::unique_ptr<protocol::Debugger::Location> currentDebugLocation(V8InspectorIm
pl* inspector) | |
| 126 { | |
| 127 std::unique_ptr<V8StackTraceImpl> callStack = inspector->debugger()->capture
StackTrace(false /* fullStack */); | |
| 128 auto location = protocol::Debugger::Location::create() | |
| 129 .setScriptId(toString16(callStack->topScriptId())) | |
| 130 .setLineNumber(callStack->topLineNumber()).build(); | |
| 131 location->setColumnNumber(callStack->topColumnNumber()); | |
| 132 return location; | |
| 133 } | |
| 134 | |
| 135 volatile int s_lastProfileId = 0; | |
| 136 | |
| 137 } // namespace | |
| 138 | |
| 139 class V8ProfilerAgentImpl::ProfileDescriptor { | |
| 140 public: | |
| 141 ProfileDescriptor(const String16& id, const String16& title) | |
| 142 : m_id(id) | |
| 143 , m_title(title) { } | |
| 144 String16 m_id; | |
| 145 String16 m_title; | |
| 146 }; | |
| 147 | |
| 148 V8ProfilerAgentImpl::V8ProfilerAgentImpl(V8InspectorSessionImpl* session, protoc
ol::FrontendChannel* frontendChannel, protocol::DictionaryValue* state) | |
| 149 : m_session(session) | |
| 150 , m_isolate(m_session->inspector()->isolate()) | |
| 151 , m_profiler(nullptr) | |
| 152 , m_state(state) | |
| 153 , m_frontend(frontendChannel) | |
| 154 , m_enabled(false) | |
| 155 , m_recordingCPUProfile(false) | |
| 156 { | |
| 157 } | |
| 158 | |
| 159 V8ProfilerAgentImpl::~V8ProfilerAgentImpl() | |
| 160 { | |
| 161 #if ENSURE_V8_VERSION(5, 4) | |
| 162 if (m_profiler) | |
| 163 m_profiler->Dispose(); | |
| 164 #endif | |
| 165 } | |
| 166 | |
| 167 void V8ProfilerAgentImpl::consoleProfile(const String16& title) | |
| 168 { | |
| 169 if (!m_enabled) | |
| 170 return; | |
| 171 String16 id = nextProfileId(); | |
| 172 m_startedProfiles.push_back(ProfileDescriptor(id, title)); | |
| 173 startProfiling(id); | |
| 174 m_frontend.consoleProfileStarted(id, currentDebugLocation(m_session->inspect
or()), title); | |
| 175 } | |
| 176 | |
| 177 void V8ProfilerAgentImpl::consoleProfileEnd(const String16& title) | |
| 178 { | |
| 179 if (!m_enabled) | |
| 180 return; | |
| 181 String16 id; | |
| 182 String16 resolvedTitle; | |
| 183 // Take last started profile if no title was passed. | |
| 184 if (title.isEmpty()) { | |
| 185 if (m_startedProfiles.empty()) | |
| 186 return; | |
| 187 id = m_startedProfiles.back().m_id; | |
| 188 resolvedTitle = m_startedProfiles.back().m_title; | |
| 189 m_startedProfiles.pop_back(); | |
| 190 } else { | |
| 191 for (size_t i = 0; i < m_startedProfiles.size(); i++) { | |
| 192 if (m_startedProfiles[i].m_title == title) { | |
| 193 resolvedTitle = title; | |
| 194 id = m_startedProfiles[i].m_id; | |
| 195 m_startedProfiles.erase(m_startedProfiles.begin() + i); | |
| 196 break; | |
| 197 } | |
| 198 } | |
| 199 if (id.isEmpty()) | |
| 200 return; | |
| 201 } | |
| 202 std::unique_ptr<protocol::Profiler::Profile> profile = stopProfiling(id, tru
e); | |
| 203 if (!profile) | |
| 204 return; | |
| 205 std::unique_ptr<protocol::Debugger::Location> location = currentDebugLocatio
n(m_session->inspector()); | |
| 206 m_frontend.consoleProfileFinished(id, std::move(location), std::move(profile
), resolvedTitle); | |
| 207 } | |
| 208 | |
| 209 void V8ProfilerAgentImpl::enable(ErrorString*) | |
| 210 { | |
| 211 if (m_enabled) | |
| 212 return; | |
| 213 m_enabled = true; | |
| 214 #if ENSURE_V8_VERSION(5, 4) | |
| 215 DCHECK(!m_profiler); | |
| 216 m_profiler = v8::CpuProfiler::New(m_isolate); | |
| 217 #endif | |
| 218 m_state->setBoolean(ProfilerAgentState::profilerEnabled, true); | |
| 219 } | |
| 220 | |
| 221 void V8ProfilerAgentImpl::disable(ErrorString* errorString) | |
| 222 { | |
| 223 if (!m_enabled) | |
| 224 return; | |
| 225 for (size_t i = m_startedProfiles.size(); i > 0; --i) | |
| 226 stopProfiling(m_startedProfiles[i - 1].m_id, false); | |
| 227 m_startedProfiles.clear(); | |
| 228 stop(nullptr, nullptr); | |
| 229 #if ENSURE_V8_VERSION(5, 4) | |
| 230 m_profiler->Dispose(); | |
| 231 m_profiler = nullptr; | |
| 232 #endif | |
| 233 m_enabled = false; | |
| 234 m_state->setBoolean(ProfilerAgentState::profilerEnabled, false); | |
| 235 } | |
| 236 | |
| 237 void V8ProfilerAgentImpl::setSamplingInterval(ErrorString* error, int interval) | |
| 238 { | |
| 239 if (m_recordingCPUProfile) { | |
| 240 *error = "Cannot change sampling interval when profiling."; | |
| 241 return; | |
| 242 } | |
| 243 m_state->setInteger(ProfilerAgentState::samplingInterval, interval); | |
| 244 profiler()->SetSamplingInterval(interval); | |
| 245 } | |
| 246 | |
| 247 void V8ProfilerAgentImpl::restore() | |
| 248 { | |
| 249 DCHECK(!m_enabled); | |
| 250 if (!m_state->booleanProperty(ProfilerAgentState::profilerEnabled, false)) | |
| 251 return; | |
| 252 m_enabled = true; | |
| 253 #if ENSURE_V8_VERSION(5, 4) | |
| 254 DCHECK(!m_profiler); | |
| 255 m_profiler = v8::CpuProfiler::New(m_isolate); | |
| 256 #endif | |
| 257 int interval = 0; | |
| 258 m_state->getInteger(ProfilerAgentState::samplingInterval, &interval); | |
| 259 if (interval) | |
| 260 profiler()->SetSamplingInterval(interval); | |
| 261 if (m_state->booleanProperty(ProfilerAgentState::userInitiatedProfiling, fal
se)) { | |
| 262 ErrorString error; | |
| 263 start(&error); | |
| 264 } | |
| 265 } | |
| 266 | |
| 267 void V8ProfilerAgentImpl::start(ErrorString* error) | |
| 268 { | |
| 269 if (m_recordingCPUProfile) | |
| 270 return; | |
| 271 if (!m_enabled) { | |
| 272 *error = "Profiler is not enabled"; | |
| 273 return; | |
| 274 } | |
| 275 m_recordingCPUProfile = true; | |
| 276 m_frontendInitiatedProfileId = nextProfileId(); | |
| 277 startProfiling(m_frontendInitiatedProfileId); | |
| 278 m_state->setBoolean(ProfilerAgentState::userInitiatedProfiling, true); | |
| 279 } | |
| 280 | |
| 281 void V8ProfilerAgentImpl::stop(ErrorString* errorString, std::unique_ptr<protoco
l::Profiler::Profile>* profile) | |
| 282 { | |
| 283 if (!m_recordingCPUProfile) { | |
| 284 if (errorString) | |
| 285 *errorString = "No recording profiles found"; | |
| 286 return; | |
| 287 } | |
| 288 m_recordingCPUProfile = false; | |
| 289 std::unique_ptr<protocol::Profiler::Profile> cpuProfile = stopProfiling(m_fr
ontendInitiatedProfileId, !!profile); | |
| 290 if (profile) { | |
| 291 *profile = std::move(cpuProfile); | |
| 292 if (!profile->get() && errorString) | |
| 293 *errorString = "Profile is not found"; | |
| 294 } | |
| 295 m_frontendInitiatedProfileId = String16(); | |
| 296 m_state->setBoolean(ProfilerAgentState::userInitiatedProfiling, false); | |
| 297 } | |
| 298 | |
| 299 String16 V8ProfilerAgentImpl::nextProfileId() | |
| 300 { | |
| 301 return String16::fromInteger(atomicIncrement(&s_lastProfileId)); | |
| 302 } | |
| 303 | |
| 304 void V8ProfilerAgentImpl::startProfiling(const String16& title) | |
| 305 { | |
| 306 v8::HandleScope handleScope(m_isolate); | |
| 307 profiler()->StartProfiling(toV8String(m_isolate, title), true); | |
| 308 } | |
| 309 | |
| 310 std::unique_ptr<protocol::Profiler::Profile> V8ProfilerAgentImpl::stopProfiling(
const String16& title, bool serialize) | |
| 311 { | |
| 312 v8::HandleScope handleScope(m_isolate); | |
| 313 v8::CpuProfile* profile = profiler()->StopProfiling(toV8String(m_isolate, ti
tle)); | |
| 314 if (!profile) | |
| 315 return nullptr; | |
| 316 std::unique_ptr<protocol::Profiler::Profile> result; | |
| 317 if (serialize) | |
| 318 result = createCPUProfile(m_isolate, profile); | |
| 319 profile->Delete(); | |
| 320 return result; | |
| 321 } | |
| 322 | |
| 323 bool V8ProfilerAgentImpl::isRecording() const | |
| 324 { | |
| 325 return m_recordingCPUProfile || !m_startedProfiles.empty(); | |
| 326 } | |
| 327 | |
| 328 v8::CpuProfiler* V8ProfilerAgentImpl::profiler() | |
| 329 { | |
| 330 #if ENSURE_V8_VERSION(5, 4) | |
| 331 return m_profiler; | |
| 332 #else | |
| 333 return m_isolate->GetCpuProfiler(); | |
| 334 #endif | |
| 335 } | |
| 336 | |
| 337 } // namespace v8_inspector | |
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Chromium Code Reviews
Issue 2300823002:
Revert of [inspector] Initial import of v8_inspector. (Closed)
