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42 #include "qv8profilerservice_p.h"
43 #include "qdeclarativedebugservice_p_p.h"
44 #include "private/qjsconverter_impl_p.h"
45 #include <private/qv8profiler_p.h>
47 #include <QtCore/QHash>
51 Q_GLOBAL_STATIC(QV8ProfilerService, v8ProfilerInstance)
53 class DebugServiceOutputStream : public v8::OutputStream
55 QDeclarativeDebugService &_service;
57 DebugServiceOutputStream(QDeclarativeDebugService &service)
61 WriteResult WriteAsciiChunk(char *rawData, int size)
64 QDataStream ds(&data, QIODevice::WriteOnly);
65 ds << QV8ProfilerService::V8SnapshotChunk << QByteArray(rawData, size);
66 _service.sendMessage(data);
71 // convert to a QByteArray that can be sent to the debug client
72 QByteArray QV8ProfilerData::toByteArray() const
75 //### using QDataStream is relatively expensive
76 QDataStream ds(&data, QIODevice::WriteOnly);
77 ds << messageType << filename << functionname << lineNumber << totalTime << selfTime << treeLevel;
82 class QV8ProfilerServicePrivate : public QDeclarativeDebugServicePrivate
84 Q_DECLARE_PUBLIC(QV8ProfilerService)
87 QV8ProfilerServicePrivate()
92 void takeSnapshot(v8::HeapSnapshot::Type);
94 void printProfileTree(const v8::CpuProfileNode *node, int level = 0);
97 QList<QV8ProfilerData> m_data;
102 QV8ProfilerService::QV8ProfilerService(QObject *parent)
103 : QDeclarativeDebugService(*(new QV8ProfilerServicePrivate()), QLatin1String("V8Profiler"), 1, parent)
105 Q_D(QV8ProfilerService);
107 if (registerService() == Enabled) {
108 // ,block mode, client attached
109 while (!d->initialized)
114 QV8ProfilerService::~QV8ProfilerService()
118 QV8ProfilerService *QV8ProfilerService::instance()
120 return v8ProfilerInstance();
123 void QV8ProfilerService::initialize()
125 // just make sure that the service is properly registered
126 v8ProfilerInstance();
129 void QV8ProfilerService::messageReceived(const QByteArray &message)
131 Q_D(QV8ProfilerService);
133 QDataStream ds(message);
137 ds >> command >> option;
139 if (command == "V8PROFILER") {
141 if (option == "start") {
142 QMetaObject::invokeMethod(this, "startProfiling", Qt::QueuedConnection, Q_ARG(QString, QString::fromUtf8(title)));
143 } else if (option == "stop") {
144 QMetaObject::invokeMethod(this, "stopProfiling", Qt::QueuedConnection, Q_ARG(QString, QString::fromUtf8(title)));
145 QMetaObject::invokeMethod(this, "sendProfilingData", Qt::QueuedConnection);
147 d->initialized = true;
150 if (command == "V8SNAPSHOT") {
151 if (option == "full")
152 QMetaObject::invokeMethod(this, "takeSnapshot", Qt::QueuedConnection);
153 else if (option == "delete") {
154 QMetaObject::invokeMethod(this, "deleteSnapshots", Qt::QueuedConnection);
158 QDeclarativeDebugService::messageReceived(message);
161 void QV8ProfilerService::startProfiling(const QString &title)
164 v8::HandleScope handle_scope;
165 v8::Handle<v8::String> v8title = v8::String::New(reinterpret_cast<const uint16_t*>(title.data()), title.size());
166 v8::CpuProfiler::StartProfiling(v8title);
169 void QV8ProfilerService::stopProfiling(const QString &title)
171 Q_D(QV8ProfilerService);
173 v8::HandleScope handle_scope;
174 v8::Handle<v8::String> v8title = v8::String::New(reinterpret_cast<const uint16_t*>(title.data()), title.size());
175 const v8::CpuProfile *cpuProfile = v8::CpuProfiler::StopProfiling(v8title);
177 // can happen at start
178 const v8::CpuProfileNode *rootNode = cpuProfile->GetTopDownRoot();
179 d->printProfileTree(rootNode);
183 void QV8ProfilerService::takeSnapshot()
185 Q_D(QV8ProfilerService);
186 d->takeSnapshot(v8::HeapSnapshot::kFull);
189 void QV8ProfilerService::deleteSnapshots()
191 v8::HeapProfiler::DeleteAllSnapshots();
194 void QV8ProfilerService::sendProfilingData()
196 Q_D(QV8ProfilerService);
197 // Send messages to client
201 void QV8ProfilerServicePrivate::printProfileTree(const v8::CpuProfileNode *node, int level)
203 for (int index = 0 ; index < node->GetChildrenCount() ; index++) {
204 const v8::CpuProfileNode* childNode = node->GetChild(index);
205 QString scriptResourceName = QJSConverter::toString(childNode->GetScriptResourceName());
206 if (scriptResourceName.length() > 0) {
208 QV8ProfilerData rd = {(int)QV8ProfilerService::V8Entry, scriptResourceName,
209 QJSConverter::toString(childNode->GetFunctionName()),
210 childNode->GetLineNumber(), childNode->GetTotalTime(), childNode->GetSelfTime(), level};
213 // different nodes might have common children: fix at client side
214 if (childNode->GetChildrenCount() > 0) {
215 printProfileTree(childNode, level+1);
221 void QV8ProfilerServicePrivate::takeSnapshot(v8::HeapSnapshot::Type snapshotType)
223 Q_Q(QV8ProfilerService);
225 v8::HandleScope scope;
226 v8::Local<v8::String> title = v8::String::New("");
228 DebugServiceOutputStream outputStream(*q);
229 const v8::HeapSnapshot *snapshot = v8::HeapProfiler::TakeSnapshot(title, snapshotType);
230 snapshot->Serialize(&outputStream, v8::HeapSnapshot::kJSON);
232 //indicate completion
234 QDataStream ds(&data, QIODevice::WriteOnly);
235 ds << (int)QV8ProfilerService::V8SnapshotComplete;
237 q->sendMessage(data);
240 void QV8ProfilerServicePrivate::sendMessages()
242 Q_Q(QV8ProfilerService);
244 QList<QByteArray> messages;
245 for (int i = 0; i < m_data.count(); ++i)
246 messages << m_data.at(i).toByteArray();
247 q->sendMessages(messages);
250 //indicate completion
252 QDataStream ds(&data, QIODevice::WriteOnly);
253 ds << (int)QV8ProfilerService::V8Complete;
255 q->sendMessage(data);