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qquickworkerscript.cpp

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1 /**************************************************************************** -

2 ** -

4 ** Contact: https://www.qt.io/licensing/ -

5 ** -

6 ** This file is part of the QtQml module of the Qt Toolkit. -

7 ** -

8 ** $QT_BEGIN_LICENSE:LGPL$ -

9 ** Commercial License Usage -

10 ** Licensees holding valid commercial Qt licenses may use this file in -

11 ** accordance with the commercial license agreement provided with the -

12 ** Software or, alternatively, in accordance with the terms contained in -

13 ** a written agreement between you and The Qt Company. For licensing terms -

14 ** and conditions see https://www.qt.io/terms-conditions. For further -

15 ** information use the contact form at https://www.qt.io/contact-us. -

16 ** -

17 ** GNU Lesser General Public License Usage -

18 ** Alternatively, this file may be used under the terms of the GNU Lesser -

19 ** General Public License version 3 as published by the Free Software -

20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the -

21 ** packaging of this file. Please review the following information to -

22 ** ensure the GNU Lesser General Public License version 3 requirements -

23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -

24 ** -

25 ** GNU General Public License Usage -

26 ** Alternatively, this file may be used under the terms of the GNU -

27 ** General Public License version 2.0 or (at your option) the GNU General -

28 ** Public license version 3 or any later version approved by the KDE Free -

29 ** Qt Foundation. The licenses are as published by the Free Software -

30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -

31 ** included in the packaging of this file. Please review the following -

32 ** information to ensure the GNU General Public License requirements will -

33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and -

34 ** https://www.gnu.org/licenses/gpl-3.0.html. -

35 ** -

36 ** $QT_END_LICENSE$ -

37 ** -

38 ****************************************************************************/ -

39 -

40 #include "qtqmlglobal_p.h" -

41 #include "qquickworkerscript_p.h" -

42 #if QT_CONFIG(qml_list_model) -

43 #include "qqmllistmodel_p.h" -

44 #include "qqmllistmodelworkeragent_p.h" -

45 #endif -

46 #include <private/qqmlengine_p.h> -

47 #include <private/qqmlexpression_p.h> -

48 -

49 #include <QtCore/qcoreevent.h> -

50 #include <QtCore/qcoreapplication.h> -

51 #include <QtCore/qdebug.h> -

52 #include <QtQml/qjsengine.h> -

53 #include <QtCore/qmutex.h> -

54 #include <QtCore/qwaitcondition.h> -

55 #include <QtCore/qfile.h> -

56 #include <QtCore/qdatetime.h> -

57 #include <QtQml/qqmlinfo.h> -

58 #include <QtQml/qqmlfile.h> -

59 #if QT_CONFIG(qml_network) -

60 #include <QtNetwork/qnetworkaccessmanager.h> -

61 #include "qqmlnetworkaccessmanagerfactory.h" -

62 #endif -

63 -

64 #include <private/qv8engine_p.h> -

65 #include <private/qv4serialize_p.h> -

66 -

67 #include <private/qv4value_p.h> -

68 #include <private/qv4functionobject_p.h> -

69 #include <private/qv4script_p.h> -

70 #include <private/qv4scopedvalue_p.h> -

71 #include <private/qv4jscall_p.h> -

72 -

73 QT_BEGIN_NAMESPACE -

74 -

75 class WorkerDataEvent : public QEvent -

76 { -

77 public: -

78 enum Type { WorkerData = QEvent::User }; -

79 -

80 WorkerDataEvent(int workerId, const QByteArray &data); -

81 virtual ~WorkerDataEvent(); -

82 -

83 int workerId() const; -

84 QByteArray data() const; -

85 -

86 private: -

87 int m_id; -

88 QByteArray m_data; -

89 }; -

90 -

91 class WorkerLoadEvent : public QEvent -

92 { -

93 public: -

94 enum Type { WorkerLoad = WorkerDataEvent::WorkerData + 1 }; -

95 -

96 WorkerLoadEvent(int workerId, const QUrl &url); -

97 -

98 int workerId() const; -

99 QUrl url() const; -

100 -

101 private: -

102 int m_id; -

103 QUrl m_url; -

104 }; -

105 -

106 class WorkerRemoveEvent : public QEvent -

107 { -

108 public: -

109 enum Type { WorkerRemove = WorkerLoadEvent::WorkerLoad + 1 }; -

110 -

111 WorkerRemoveEvent(int workerId); -

112 -

113 int workerId() const; -

114 -

115 private: -

116 int m_id; -

117 }; -

118 -

119 class WorkerErrorEvent : public QEvent -

120 { -

121 public: -

122 enum Type { WorkerError = WorkerRemoveEvent::WorkerRemove + 1 }; -

123 -

124 WorkerErrorEvent(const QQmlError &error); -

125 -

126 QQmlError error() const; -

127 -

128 private: -

129 QQmlError m_error; -

130 }; -

131 -

132 class QQuickWorkerScriptEnginePrivate : public QObject -

133 { -

134 Q_OBJECT -

135 public: -

136 enum WorkerEventTypes { -

137 WorkerDestroyEvent = QEvent::User + 100 -

138 }; -

139 -

140 QQuickWorkerScriptEnginePrivate(QQmlEngine *eng); -

141 -

142 class WorkerEngine : public QV8Engine -

143 { -

144 public: -

145 WorkerEngine(QQuickWorkerScriptEnginePrivate *parent); -

146 ~WorkerEngine(); -

147 -

148 void init(); -

149 -

150 #if QT_CONFIG(qml_network) -

151 QNetworkAccessManager *networkAccessManager() override; -

152 #endif -

153 -

154 QQuickWorkerScriptEnginePrivate *p; -

155 -

156 QV4::ReturnedValue sendFunction(int id); -

157 -

158 QV4::PersistentValue onmessage; -

159 private: -

160 QV4::PersistentValue createsend; -

161 #if QT_CONFIG(qml_network) -

162 QNetworkAccessManager *accessManager; -

163 #endif -

164 }; -

165 -

166 WorkerEngine *workerEngine; -

167 static QQuickWorkerScriptEnginePrivate *get(QV8Engine *e) { -

168

return static_cast<WorkerEngine *>(e)->p;

executed 8 times by 1 test: return static_cast<WorkerEngine *>(e)->p;

Executed by:

tst_qquickworkerscript

169 } -

170 -

171 QQmlEngine *qmlengine; -

172 -

173 QMutex m_lock; -

174 QWaitCondition m_wait; -

175 -

176 struct WorkerScript { -

177 WorkerScript(); -

178 ~WorkerScript(); -

179 -

180 int id; -

181 QUrl source; -

182 bool initialized; -

183 QQuickWorkerScript *owner; -

184 QV4::PersistentValue qmlContext; -

185 }; -

186 -

187 QHash<int, WorkerScript *> workers; -

188 QV4::ReturnedValue getWorker(WorkerScript *); -

189 -

190 int m_nextId; -

191 -

192 static QV4::ReturnedValue method_sendMessage(const QV4::FunctionObject *, const QV4::Value *thisObject, const QV4::Value *argv, int argc); -

193 -

194 signals: -

195 void stopThread(); -

196 -

197 protected: -

198 bool event(QEvent *) override; -

199 -

200 private: -

201 void processMessage(int, const QByteArray &); -

202 void processLoad(int, const QUrl &); -

203 void reportScriptException(WorkerScript *, const QQmlError &error); -

204 }; -

205 -

206 QQuickWorkerScriptEnginePrivate::WorkerEngine::WorkerEngine(QQuickWorkerScriptEnginePrivate *parent) -

207 : QV8Engine(new QV4::ExecutionEngine), p(parent) -

208 #if QT_CONFIG(qml_network) -

209 , accessManager(nullptr) -

210 #endif -

211 { -

212 m_v4Engine->v8Engine = this; -

213

}

executed 1110 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1110

214 -

215 QQuickWorkerScriptEnginePrivate::WorkerEngine::~WorkerEngine() -

216 { -

217 #if QT_CONFIG(qml_network) -

218 delete accessManager; -

219 #endif -

220 delete m_v4Engine; -

221

}

executed 1110 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1110

222 -

223 void QQuickWorkerScriptEnginePrivate::WorkerEngine::init() -

224 { -

225 initQmlGlobalObject(); -

226 #define CALL_ONMESSAGE_SCRIPT \ -

227 "(function(object, message) { "\ -

228 "var isfunction = false; "\ -

229 "try { "\ -

230 "isfunction = object.WorkerScript.onMessage instanceof Function; "\ -

231 "} catch (e) {}" \ -

232 "if (isfunction) "\ -

233 "object.WorkerScript.onMessage(message); "\ -

234 "})" -

235 -

236 #define SEND_MESSAGE_CREATE_SCRIPT \ -

237 "(function(method, engine) { "\ -

238 "return (function(id) { "\ -

239 "return (function(message) { "\ -

240 "if (arguments.length) method(engine, id, message); "\ -

241 "}); "\ -

242 "}); "\ -

243 "})" -

244 -

245 QV4::Scope scope(m_v4Engine); -

246 QV4::ExecutionContext *globalContext = scope.engine->rootContext(); -

247 onmessage.set(scope.engine, QV4::Script(globalContext, QV4::Compiler::ContextType::Global, QString::fromUtf8(CALL_ONMESSAGE_SCRIPT)).run()); // do not use QStringLiteral here, MSVC2012 cannot apply this cleanly to the macro -

248 Q_ASSERT(!scope.engine->hasException); -

249 QV4::Script createsendscript(globalContext, QV4::Compiler::ContextType::Global, QString::fromUtf8(SEND_MESSAGE_CREATE_SCRIPT)); // do not use QStringLiteral here, MSVC2012 cannot apply this cleanly to the macro -

250 QV4::ScopedFunctionObject createsendconstructor(scope, createsendscript.run()); -

251 Q_ASSERT(!scope.engine->hasException); -

252

QV4::ScopedString name(scope, m_v4Engine->newString(QStringLiteral("sendMessage")));

executed 1110 times by 5 tests: return qstring_literal_temp;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1110

253 QV4::ScopedValue function(scope, QV4::FunctionObject::createBuiltinFunction(m_v4Engine, name, method_sendMessage, 1)); -

254 QV4::JSCallData jsCallData(scope, 1); -

255 jsCallData->args[0] = function; -

256 *jsCallData->thisObject = m_v4Engine->global(); -

257 createsend.set(scope.engine, createsendconstructor->call(jsCallData)); -

258

}

executed 1110 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1110

259 -

260 // Requires handle and context scope -

261 QV4::ReturnedValue QQuickWorkerScriptEnginePrivate::WorkerEngine::sendFunction(int id) -

262 { -

263 QV4::ExecutionEngine *v4 = createsend.engine(); -

264

if (!v4)

!v4	Description
TRUE	never evaluated
FALSE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

0-1152

265

return QV4::Encode::undefined();

never executed: return QV4::Encode::undefined();

266 -

267 QV4::Scope scope(v4); -

268 QV4::ScopedFunctionObject f(scope, createsend.value()); -

269 -

270 QV4::ScopedValue v(scope); -

271 QV4::JSCallData jsCallData(scope, 1); -

272 jsCallData->args[0] = QV4::Primitive::fromInt32(id); -

273 *jsCallData->thisObject = m_v4Engine->global(); -

274 v = f->call(jsCallData); -

275

if (scope.hasException())

scope.hasException()	Description
TRUE	never evaluated
FALSE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

0-1152

276

v = scope.engine->catchException();

never executed: v = scope.engine->catchException();

277

return v->asReturnedValue();

executed 1152 times by 5 tests: return v->asReturnedValue();

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1152

278 } -

279 -

280 #if QT_CONFIG(qml_network) -

281 QNetworkAccessManager *QQuickWorkerScriptEnginePrivate::WorkerEngine::networkAccessManager() -

282 { -

283

if (!accessManager) {

!accessManager	Description
TRUE	never evaluated
FALSE	never evaluated

284

if (p->qmlengine && p->qmlengine->networkAccessManagerFactory()) {

p->qmlengine	Description
TRUE	never evaluated
FALSE	never evaluated

p->qmlengine->...nagerFactory()	Description
TRUE	never evaluated
FALSE	never evaluated

285 accessManager = p->qmlengine->networkAccessManagerFactory()->create(p); -

286

} else {

never executed: end of block

287 accessManager = new QNetworkAccessManager(p); -

288

}

never executed: end of block

289 } -

290

return accessManager;

never executed: return accessManager;

291 } -

292 #endif -

293 -

294 QQuickWorkerScriptEnginePrivate::QQuickWorkerScriptEnginePrivate(QQmlEngine *engine) -

295 : workerEngine(nullptr), qmlengine(engine), m_nextId(0) -

296 { -

297

}

executed 1110 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1110

298 -

299 QV4::ReturnedValue QQuickWorkerScriptEnginePrivate::method_sendMessage(const QV4::FunctionObject *b, -

300 const QV4::Value *, const QV4::Value *argv, int argc) -

301 { -

302 QV4::Scope scope(b); -

303 WorkerEngine *engine = static_cast<WorkerEngine *>(scope.engine->v8Engine); -

304 -

305

int id = argc > 1 ? argv[1].toInt32() : 0;

argc > 1	Description
TRUE	evaluated 976 times by 4 tests Evaluated by: tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	never evaluated

0-976

306 -

307 QV4::ScopedValue v(scope, argc > 2 ? argv[2] : QV4::Primitive::undefinedValue()); -

308 QByteArray data = QV4::Serialize::serialize(v, scope.engine); -

309 -

310 QMutexLocker locker(&engine->p->m_lock); -

311 WorkerScript *script = engine->p->workers.value(id); -

312

if (script && script->owner)

script	Description
TRUE	evaluated 976 times by 4 tests Evaluated by: tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	never evaluated

script->owner	Description
TRUE	evaluated 972 times by 4 tests Evaluated by: tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 4 times by 1 test Evaluated by: tst_qqmllistmodelworkerscript

0-976

313

QCoreApplication::postEvent(script->owner, new WorkerDataEvent(0, data));

executed 972 times by 4 tests: QCoreApplication::postEvent(script->owner, new WorkerDataEvent(0, data));

Executed by:

tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

972

314 -

315

return QV4::Encode::undefined();

executed 976 times by 4 tests: return QV4::Encode::undefined();

Executed by:

tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

976

316 } -

317 -

318 QV4::ReturnedValue QQuickWorkerScriptEnginePrivate::getWorker(WorkerScript *script) -

319 { -

320

if (!script->initialized) {

!script->initialized	Description
TRUE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 2 times by 1 test Evaluated by: tst_qquickworkerscript

2-1152

321 script->initialized = true; -

322 -

323 QV4::ExecutionEngine *v4 = QV8Engine::getV4(workerEngine); -

324 QV4::Scope scope(v4); -

325 QV4::ScopedValue v(scope, workerEngine->sendFunction(script->id)); -

326 script->qmlContext.set(v4, QV4::QmlContext::createWorkerContext(v4->rootContext(), script->source, v)); -

327

}

executed 1152 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1152

328 -

329

return script->qmlContext.value();

executed 1154 times by 5 tests: return script->qmlContext.value();

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1154

330 } -

331 -

332 bool QQuickWorkerScriptEnginePrivate::event(QEvent *event) -

333 { -

334

if (event->type() == (QEvent::Type)WorkerDataEvent::WorkerData) {

event->type() ...nt::WorkerData	Description
TRUE	evaluated 1182 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 4526 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

1182-4526

335 WorkerDataEvent *workerEvent = static_cast<WorkerDataEvent *>(event); -

336 processMessage(workerEvent->workerId(), workerEvent->data()); -

337

return true;

executed 1182 times by 5 tests: return true;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1182

338

} else if (event->type() == (QEvent::Type)WorkerLoadEvent::WorkerLoad) {

event->type() ...nt::WorkerLoad	Description
TRUE	evaluated 1154 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 3372 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

1154-3372

339 WorkerLoadEvent *workerEvent = static_cast<WorkerLoadEvent *>(event); -

340 processLoad(workerEvent->workerId(), workerEvent->url()); -

341

return true;

executed 1154 times by 5 tests: return true;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1154

342

} else if (event->type() == (QEvent::Type)WorkerDestroyEvent) {

event->type() ...erDestroyEvent	Description
TRUE	evaluated 1110 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 2262 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

1110-2262

343 emit stopThread(); -

344

return true;

executed 1110 times by 5 tests: return true;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1110

345

} else if (event->type() == (QEvent::Type)WorkerRemoveEvent::WorkerRemove) {

event->type() ...::WorkerRemove	Description
TRUE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 1110 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

1110-1152

346 WorkerRemoveEvent *workerEvent = static_cast<WorkerRemoveEvent *>(event); -

347 QHash<int, WorkerScript *>::iterator itr = workers.find(workerEvent->workerId()); -

348

if (itr != workers.end()) {

itr != workers.end()	Description
TRUE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	never evaluated

0-1152

349 delete itr.value(); -

350 workers.erase(itr); -

351

}

executed 1152 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1152

352

return true;

executed 1152 times by 5 tests: return true;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1152

353 } else { -

354

return QObject::event(event);

executed 1110 times by 5 tests: return QObject::event(event);

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1110

355 } -

356 } -

357 -

358 void QQuickWorkerScriptEnginePrivate::processMessage(int id, const QByteArray &data) -

359 { -

360 WorkerScript *script = workers.value(id); -

361

if (!script)

!script	Description
TRUE	never evaluated
FALSE	evaluated 1182 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

0-1182

362

return;

never executed: return;

363 -

364 QV4::ExecutionEngine *v4 = QV8Engine::getV4(workerEngine); -

365 QV4::Scope scope(v4); -

366 QV4::ScopedFunctionObject f(scope, workerEngine->onmessage.value()); -

367 -

368 QV4::ScopedValue value(scope, QV4::Serialize::deserialize(data, v4)); -

369 QV4::Scoped<QV4::QmlContext> qmlContext(scope, script->qmlContext.value()); -

370 Q_ASSERT(!!qmlContext); -

371 -

372 QV4::JSCallData jsCallData(scope, 2); -

373 *jsCallData->thisObject = v4->global(); -

374 jsCallData->args[0] = qmlContext->d()->qml(); // ### -

375 jsCallData->args[1] = value; -

376 f->call(jsCallData); -

377

if (scope.hasException()) {

scope.hasException()	Description
TRUE	evaluated 4 times by 1 test Evaluated by: tst_qquickworkerscript
FALSE	evaluated 1178 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

4-1178

378 QQmlError error = scope.engine->catchExceptionAsQmlError(); -

379 reportScriptException(script, error); -

380

}

executed 4 times by 1 test: end of block

Executed by:

tst_qquickworkerscript

381

}

executed 1182 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1182

382 -

383 void QQuickWorkerScriptEnginePrivate::processLoad(int id, const QUrl &url) -

384 { -

385

if (url.isRelative())

url.isRelative()	Description
TRUE	never evaluated
FALSE	evaluated 1154 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

0-1154

386

return;

never executed: return;

387 -

388 QString fileName = QQmlFile::urlToLocalFileOrQrc(url); -

389 -

390 QV4::ExecutionEngine *v4 = QV8Engine::getV4(workerEngine); -

391 QV4::Scope scope(v4); -

392 QScopedPointer<QV4::Script> program; -

393 -

394 WorkerScript *script = workers.value(id); -

395

if (!script)

!script	Description
TRUE	never evaluated
FALSE	evaluated 1154 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

0-1154

396

return;

never executed: return;

397 script->source = url; -

398 -

399 QV4::Scoped<QV4::QmlContext> qmlContext(scope, getWorker(script)); -

400 Q_ASSERT(!!qmlContext); -

401 -

402 QString error; -

403 program.reset(QV4::Script::createFromFileOrCache(v4, qmlContext, fileName, url, &error)); -

404

if (program.isNull()) {

program.isNull()	Description
TRUE	never evaluated
FALSE	evaluated 1154 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

0-1154

405

if (!error.isEmpty())

!error.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

406

qWarning().nospace() << error;

never executed: QMessageLogger(__FILE__, 406, __PRETTY_FUNCTION__).warning().nospace() << error;

407

return;

never executed: return;

408 } -

409 -

410

if (!v4->hasException)

!v4->hasException	Description
TRUE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 2 times by 1 test Evaluated by: tst_qquickworkerscript

2-1152

411

program->run();

executed 1152 times by 5 tests: program->run();

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1152

412 -

413

if (v4->hasException) {

v4->hasException	Description
TRUE	evaluated 4 times by 1 test Evaluated by: tst_qquickworkerscript
FALSE	evaluated 1150 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

4-1150

414 QQmlError error = v4->catchExceptionAsQmlError(); -

415 reportScriptException(script, error); -

416

}

executed 4 times by 1 test: end of block

Executed by:

tst_qquickworkerscript

417

}

executed 1154 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
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tst_qquickworkerscript

1154

418 -

419 void QQuickWorkerScriptEnginePrivate::reportScriptException(WorkerScript *script, -

420 const QQmlError &error) -

421 { -

422 QQuickWorkerScriptEnginePrivate *p = QQuickWorkerScriptEnginePrivate::get(workerEngine); -

423 -

424 QMutexLocker locker(&p->m_lock); -

425

if (script->owner)

script->owner	Description
TRUE	evaluated 8 times by 1 test Evaluated by: tst_qquickworkerscript
FALSE	never evaluated

0-8

426

QCoreApplication::postEvent(script->owner, new WorkerErrorEvent(error));

executed 8 times by 1 test: QCoreApplication::postEvent(script->owner, new WorkerErrorEvent(error));

Executed by:

tst_qquickworkerscript

427

}

executed 8 times by 1 test: end of block

Executed by:

tst_qquickworkerscript

428 -

429 WorkerDataEvent::WorkerDataEvent(int workerId, const QByteArray &data) -

430 : QEvent((QEvent::Type)WorkerData), m_id(workerId), m_data(data) -

431 { -

432

}

executed 2154 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

2154

433 -

434 WorkerDataEvent::~WorkerDataEvent() -

435 { -

436 } -

437 -

438 int WorkerDataEvent::workerId() const -

439 { -

440

return m_id;

executed 1182 times by 5 tests: return m_id;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1182

441 } -

442 -

443 QByteArray WorkerDataEvent::data() const -

444 { -

445

return m_data;

executed 2154 times by 5 tests: return m_data;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

2154

446 } -

447 -

448 WorkerLoadEvent::WorkerLoadEvent(int workerId, const QUrl &url) -

449 : QEvent((QEvent::Type)WorkerLoad), m_id(workerId), m_url(url) -

450 { -

451

}

executed 1154 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
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tst_qquickworkerscript

1154

452 -

453 int WorkerLoadEvent::workerId() const -

454 { -

455

return m_id;

executed 1154 times by 5 tests: return m_id;

Executed by:

tst_examples
tst_qmlcachegen
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tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1154

456 } -

457 -

458 QUrl WorkerLoadEvent::url() const -

459 { -

460

return m_url;

executed 1154 times by 5 tests: return m_url;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1154

461 } -

462 -

463 WorkerRemoveEvent::WorkerRemoveEvent(int workerId) -

464 : QEvent((QEvent::Type)WorkerRemove), m_id(workerId) -

465 { -

466

}

executed 1152 times by 5 tests: end of block

Executed by:

tst_examples
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1152

467 -

468 int WorkerRemoveEvent::workerId() const -

469 { -

470

return m_id;

executed 1152 times by 5 tests: return m_id;

Executed by:

tst_examples
tst_qmlcachegen
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tst_qquickworkerscript

1152

471 } -

472 -

473 WorkerErrorEvent::WorkerErrorEvent(const QQmlError &error) -

474 : QEvent((QEvent::Type)WorkerError), m_error(error) -

475 { -

476

}

executed 8 times by 1 test: end of block

Executed by:

tst_qquickworkerscript

477 -

478 QQmlError WorkerErrorEvent::error() const -

479 { -

480

return m_error;

executed 8 times by 1 test: return m_error;

Executed by:

tst_qquickworkerscript

481 } -

482 -

483 QQuickWorkerScriptEngine::QQuickWorkerScriptEngine(QQmlEngine *parent) -

484 : QThread(parent), d(new QQuickWorkerScriptEnginePrivate(parent)) -

485 { -

486 d->m_lock.lock(); -

487 connect(d, SIGNAL(stopThread()), this, SLOT(quit()), Qt::DirectConnection); -

488 start(QThread::LowestPriority); -

489 d->m_wait.wait(&d->m_lock); -

490 d->moveToThread(this); -

491 d->m_lock.unlock(); -

492

}

executed 1110 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1110

493 -

494 QQuickWorkerScriptEngine::~QQuickWorkerScriptEngine() -

495 { -

496 d->m_lock.lock(); -

497 QCoreApplication::postEvent(d, new QEvent((QEvent::Type)QQuickWorkerScriptEnginePrivate::WorkerDestroyEvent)); -

498 d->m_lock.unlock(); -

499 -

500 //We have to force to cleanup the main thread's event queue here -

501 //to make sure the main GUI release all pending locks/wait conditions which -

502 //some worker script/agent are waiting for (QQmlListModelWorkerAgent::sync() for example). -

503

while (!isFinished()) {

!isFinished()	Description
TRUE	evaluated 136696 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 1110 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

1110-136696

504 // We can't simply wait here, because the worker thread will not terminate -

505 // until the main thread processes the last data event it generates -

506 QCoreApplication::processEvents(); -

507 yieldCurrentThread(); -

508

}

executed 136696 times by 5 tests: end of block

Executed by:

tst_examples
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tst_qquickworkerscript

136696

509 -

510 d->deleteLater(); -

511

}

executed 1110 times by 5 tests: end of block

Executed by:

tst_examples
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tst_qquickworkerscript

1110

512 -

513 QQuickWorkerScriptEnginePrivate::WorkerScript::WorkerScript() -

514 : id(-1), initialized(false), owner(nullptr) -

515 { -

516

}

executed 1152 times by 5 tests: end of block

Executed by:

tst_examples
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1152

517 -

518 QQuickWorkerScriptEnginePrivate::WorkerScript::~WorkerScript() -

519 { -

520 } -

521 -

522 int QQuickWorkerScriptEngine::registerWorkerScript(QQuickWorkerScript *owner) -

523 { -

524 typedef QQuickWorkerScriptEnginePrivate::WorkerScript WorkerScript; -

525 WorkerScript *script = new WorkerScript; -

526 -

527 script->id = d->m_nextId++; -

528 script->owner = owner; -

529 -

530 d->m_lock.lock(); -

531 d->workers.insert(script->id, script); -

532 d->m_lock.unlock(); -

533 -

534

return script->id;

executed 1152 times by 5 tests: return script->id;

Executed by:

tst_examples
tst_qmlcachegen
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tst_qquickworkerscript

1152

535 } -

536 -

537 void QQuickWorkerScriptEngine::removeWorkerScript(int id) -

538 { -

539 QQuickWorkerScriptEnginePrivate::WorkerScript* script = d->workers.value(id); -

540

if (script) {

script	Description
TRUE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	never evaluated

0-1152

541 script->owner = nullptr; -

542 QCoreApplication::postEvent(d, new WorkerRemoveEvent(id)); -

543

}

executed 1152 times by 5 tests: end of block

Executed by:

tst_examples
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1152

544

}

executed 1152 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
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1152

545 -

546 void QQuickWorkerScriptEngine::executeUrl(int id, const QUrl &url) -

547 { -

548 QCoreApplication::postEvent(d, new WorkerLoadEvent(id, url)); -

549

}

executed 1154 times by 5 tests: end of block

Executed by:

tst_examples
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tst_qquickworkerscript

1154

550 -

551 void QQuickWorkerScriptEngine::sendMessage(int id, const QByteArray &data) -

552 { -

553 QCoreApplication::postEvent(d, new WorkerDataEvent(id, data)); -

554

}

executed 1182 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
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tst_qquickworkerscript

1182

555 -

556 void QQuickWorkerScriptEngine::run() -

557 { -

558 d->m_lock.lock(); -

559 -

560 d->workerEngine = new QQuickWorkerScriptEnginePrivate::WorkerEngine(d); -

561 d->workerEngine->init(); -

562 -

563 d->m_wait.wakeAll(); -

564 -

565 d->m_lock.unlock(); -

566 -

567 exec(); -

568 -

569 qDeleteAll(d->workers); -

570 d->workers.clear(); -

571 -

572 delete d->workerEngine; d->workerEngine = nullptr; -

573

}

executed 1110 times by 5 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
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tst_qquickworkerscript

1110

574 -

575 -

576 /*! -

577 \qmltype WorkerScript -

578 \instantiates QQuickWorkerScript -

579 \ingroup qtquick-threading -

580 \inqmlmodule QtQuick -

581 \brief Enables the use of threads in a Qt Quick application. -

582 -

583 Use WorkerScript to run operations in a new thread. -

584 This is useful for running operations in the background so -

585 that the main GUI thread is not blocked. -

586 -

587 Messages can be passed between the new thread and the parent thread -

588 using \l sendMessage() and the \c onMessage() handler. -

589 -

590 An example: -

591 -

592 \snippet qml/workerscript/workerscript.qml 0 -

593 -

594 The above worker script specifies a JavaScript file, "script.js", that handles -

595 the operations to be performed in the new thread. Here is \c script.js: -

596 -

597 \quotefile qml/workerscript/script.js -

598 -

599 When the user clicks anywhere within the rectangle, \c sendMessage() is -

600 called, triggering the \tt WorkerScript.onMessage() handler in -

601 \tt script.js. This in turn sends a reply message that is then received -

602 by the \tt onMessage() handler of \tt myWorker. -

603 -

604 -

605 \section3 Restrictions -

606 -

607 Since the \c WorkerScript.onMessage() function is run in a separate thread, the -

608 JavaScript file is evaluated in a context separate from the main QML engine. This means -

609 that unlike an ordinary JavaScript file that is imported into QML, the \c script.js -

610 in the above example cannot access the properties, methods or other attributes -

611 of the QML item, nor can it access any context properties set on the QML object -

612 through QQmlContext. -

613 -

614 Additionally, there are restrictions on the types of values that can be passed to and -

615 from the worker script. See the sendMessage() documentation for details. -

616 -

617 Worker script can not use \l {qtqml-javascript-imports.html}{.import} syntax. -

618 -

619 \sa {Qt Quick Examples - Threading}, -

620 {Threaded ListModel Example} -

621 */ -

622 QQuickWorkerScript::QQuickWorkerScript(QObject *parent) -

623 : QObject(parent), m_engine(nullptr), m_scriptId(-1), m_componentComplete(true) -

624 { -

625

}

executed 1152 times by 5 tests: end of block

Executed by:

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1152

626 -

627 QQuickWorkerScript::~QQuickWorkerScript() -

628 { -

629

if (m_scriptId != -1) m_engine->removeWorkerScript(m_scriptId);

executed 1152 times by 5 tests: m_engine->removeWorkerScript(m_scriptId);

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

m_scriptId != -1	Description
TRUE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	never evaluated

0-1152

630

}

executed 1152 times by 5 tests: end of block

Executed by:

tst_examples
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1152

631 -

632 /*! -

633 \qmlproperty url WorkerScript::source -

634 -

635 This holds the url of the JavaScript file that implements the -

636 \tt WorkerScript.onMessage() handler for threaded operations. -

637 */ -

638 QUrl QQuickWorkerScript::source() const -

639 { -

640

return m_source;

executed 2 times by 1 test: return m_source;

Executed by:

tst_qquickworkerscript

641 } -

642 -

643 void QQuickWorkerScript::setSource(const QUrl &source) -

644 { -

645

if (m_source == source)

m_source == source	Description
TRUE	never evaluated
FALSE	evaluated 1154 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

0-1154

646

return;

never executed: return;

647 -

648 m_source = source; -

649 -

650

if (engine())

engine()	Description
TRUE	evaluated 2 times by 1 test Evaluated by: tst_qquickworkerscript
FALSE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

2-1152

651

m_engine->executeUrl(m_scriptId, m_source);

executed 2 times by 1 test: m_engine->executeUrl(m_scriptId, m_source);

Executed by:

tst_qquickworkerscript

652 -

653 emit sourceChanged(); -

654

}

executed 1154 times by 5 tests: end of block

Executed by:

tst_examples
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1154

655 -

656 /*! -

657 \qmlmethod WorkerScript::sendMessage(jsobject message) -

658 -

659 Sends the given \a message to a worker script handler in another -

660 thread. The other worker script handler can receive this message -

661 through the onMessage() handler. -

662 -

663 The \c message object may only contain values of the following -

664 types: -

665 -

666 \list -

667 \li boolean, number, string -

668 \li JavaScript objects and arrays -

669 \li ListModel objects (any other type of QObject* is not allowed) -

670 \endlist -

671 -

672 All objects and arrays are copied to the \c message. With the exception -

673 of ListModel objects, any modifications by the other thread to an object -

674 passed in \c message will not be reflected in the original object. -

675 */ -

676 void QQuickWorkerScript::sendMessage(QQmlV4Function *args) -

677 { -

678

if (!engine()) {

!engine()	Description
TRUE	evaluated 4 times by 1 test Evaluated by: tst_examples
FALSE	evaluated 1182 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

4-1182

679 qWarning("QQuickWorkerScript: Attempt to send message before WorkerScript establishment"); -

680

return;

executed 4 times by 1 test: return;

Executed by:

tst_examples

681 } -

682 -

683 QV4::Scope scope(args->v4engine()); -

684 QV4::ScopedValue argument(scope, QV4::Primitive::undefinedValue()); -

685

if (args->length() != 0)

args->length() != 0	Description
TRUE	evaluated 1182 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	never evaluated

0-1182

686

argument = (*args)[0];

executed 1182 times by 5 tests: argument = (*args)[0];

Executed by:

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1182

687 -

688 m_engine->sendMessage(m_scriptId, QV4::Serialize::serialize(argument, scope.engine)); -

689

}

executed 1182 times by 5 tests: end of block

Executed by:

tst_examples
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1182

690 -

691 void QQuickWorkerScript::classBegin() -

692 { -

693 m_componentComplete = false; -

694

}

executed 1152 times by 5 tests: end of block

Executed by:

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1152

695 -

696 QQuickWorkerScriptEngine *QQuickWorkerScript::engine() -

697 { -

698

if (m_engine) return m_engine;

executed 1184 times by 5 tests: return m_engine;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

m_engine	Description
TRUE	evaluated 1184 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 2308 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

1184-2308

699

if (m_componentComplete) {

m_componentComplete	Description
TRUE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 1156 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

1152-1156

700 QQmlEngine *engine = qmlEngine(this); -

701

if (!engine) {

!engine	Description
TRUE	never evaluated
FALSE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript

0-1152

702 qWarning("QQuickWorkerScript: engine() called without qmlEngine() set"); -

703

return nullptr;

never executed: return nullptr;

704 } -

705 -

706 m_engine = QQmlEnginePrivate::get(engine)->getWorkerScriptEngine(); -

707 m_scriptId = m_engine->registerWorkerScript(this); -

708 -

709

if (m_source.isValid())

m_source.isValid()	Description
TRUE	evaluated 1152 times by 5 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	never evaluated

0-1152

710

m_engine->executeUrl(m_scriptId, m_source);

executed 1152 times by 5 tests: m_engine->executeUrl(m_scriptId, m_source);

Executed by:

tst_examples
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tst_qqmlecmascript
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tst_qquickworkerscript

1152

711 -

712

return m_engine;

executed 1152 times by 5 tests: return m_engine;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1152

713 } -

714

return nullptr;

executed 1156 times by 5 tests: return nullptr;

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

1156

715 } -

716 -

717 void QQuickWorkerScript::componentComplete() -

718 { -

719 m_componentComplete = true; -

720 engine(); // Get it started now. -

721

}

executed 1152 times by 5 tests: end of block

Executed by:

tst_examples
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1152

722 -

723 /*! -

724 \qmlsignal WorkerScript::message(jsobject msg) -

725 -

726 This signal is emitted when a message \a msg is received from a worker -

727 script in another thread through a call to sendMessage(). -

728 -

729 The corresponding handler is \c onMessage. -

730 */ -

731 -

732 bool QQuickWorkerScript::event(QEvent *event) -

733 { -

734

if (event->type() == (QEvent::Type)WorkerDataEvent::WorkerData) {

event->type() ...nt::WorkerData	Description
TRUE	evaluated 972 times by 4 tests Evaluated by: tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	evaluated 8 times by 1 test Evaluated by: tst_qquickworkerscript

8-972

735 QQmlEngine *engine = qmlEngine(this); -

736

if (engine) {

engine	Description
TRUE	evaluated 972 times by 4 tests Evaluated by: tst_qmlcachegen tst_qqmlecmascript tst_qqmllistmodelworkerscript tst_qquickworkerscript
FALSE	never evaluated

0-972

737 WorkerDataEvent *workerEvent = static_cast<WorkerDataEvent *>(event); -

738 QV4::Scope scope(engine->handle()); -

739 QV4::ScopedValue value(scope, QV4::Serialize::deserialize(workerEvent->data(), scope.engine)); -

740 emit message(QQmlV4Handle(value)); -

741

}

executed 972 times by 4 tests: end of block

Executed by:

tst_qmlcachegen
tst_qqmlecmascript
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tst_qquickworkerscript

972

742

return true;

executed 972 times by 4 tests: return true;

Executed by:

tst_qmlcachegen
tst_qqmlecmascript
tst_qqmllistmodelworkerscript
tst_qquickworkerscript

972

743

} else if (event->type() == (QEvent::Type)WorkerErrorEvent::WorkerError) {

event->type() ...t::WorkerError	Description
TRUE	evaluated 8 times by 1 test Evaluated by: tst_qquickworkerscript
FALSE	never evaluated

0-8

744 WorkerErrorEvent *workerEvent = static_cast<WorkerErrorEvent *>(event); -

745 QQmlEnginePrivate::warning(qmlEngine(this), workerEvent->error()); -

746

return true;

executed 8 times by 1 test: return true;

Executed by:

tst_qquickworkerscript

747 } else { -

748

return QObject::event(event);

never executed: return QObject::event(event);

749 } -

750 } -

751 -

752 QT_END_NAMESPACE -

753 -

754 #include <qquickworkerscript.moc> -

755 -

756 #include "moc_qquickworkerscript_p.cpp" -

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