diff options
| -rw-r--r-- | src/declarative/util/qdeclarativexmllistmodel.cpp | 296 |
1 files changed, 205 insertions, 91 deletions
diff --git a/src/declarative/util/qdeclarativexmllistmodel.cpp b/src/declarative/util/qdeclarativexmllistmodel.cpp index 983a25e..9a74c04 100644 --- a/src/declarative/util/qdeclarativexmllistmodel.cpp +++ b/src/declarative/util/qdeclarativexmllistmodel.cpp @@ -147,114 +147,226 @@ struct XmlQueryJob QString prefix; }; -class QDeclarativeXmlQuery : public QObject + +class QDeclarativeXmlQueryEngine; +class QDeclarativeXmlQueryThreadObject : public QObject { Q_OBJECT public: - QDeclarativeXmlQuery(QObject *parent=0) - : QObject(parent), m_queryIds(XMLLISTMODEL_CLEAR_ID + 1) { - qRegisterMetaType<QDeclarativeXmlQueryResult>("QDeclarativeXmlQueryResult"); - moveToThread(&m_thread); - m_thread.start(QThread::IdlePriority); - } + QDeclarativeXmlQueryThreadObject(QDeclarativeXmlQueryEngine *); - ~QDeclarativeXmlQuery() { - if(m_thread.isRunning()) { - m_thread.quit(); - m_thread.wait(); - } - } - - void abort(int id) { - QMutexLocker ml(&m_mutex); - if (id != -1) { - m_jobs.remove(id); - } - } - - int doQuery(QString query, QString namespaces, QByteArray data, QList<QDeclarativeXmlListModelRole *>* roleObjects, QStringList keyRoleResultsCache) { - { - QMutexLocker m1(&m_mutex); - m_queryIds.ref(); - if (m_queryIds <= 0) - m_queryIds = 1; - } - - XmlQueryJob job; - job.queryId = m_queryIds; - job.data = data; - job.query = QLatin1String("doc($src)") + query; - job.namespaces = namespaces; - job.keyRoleResultsCache = keyRoleResultsCache; - - for (int i=0; i<roleObjects->count(); i++) { - if (!roleObjects->at(i)->isValid()) { - job.roleQueries << QString(); - continue; - } - job.roleQueries << roleObjects->at(i)->query(); - job.roleQueryErrorId << static_cast<void*>(roleObjects->at(i)); - if (roleObjects->at(i)->isKey()) - job.keyRoleQueries << job.roleQueries.last(); - } + void processJobs(); + virtual bool event(QEvent *e); - { - QMutexLocker ml(&m_mutex); - m_jobs.insert(m_queryIds, job); - } +private: + QDeclarativeXmlQueryEngine *m_queryEngine; +}; - QMetaObject::invokeMethod(this, "processQuery", Qt::QueuedConnection, Q_ARG(int, job.queryId)); - return job.queryId; - } -private slots: - void processQuery(int queryId) { - XmlQueryJob job; +class QDeclarativeXmlQueryEngine : public QThread +{ + Q_OBJECT +public: + QDeclarativeXmlQueryEngine(QDeclarativeEngine *eng); + ~QDeclarativeXmlQueryEngine(); - { - QMutexLocker ml(&m_mutex); - if (!m_jobs.contains(queryId)) - return; - job = m_jobs.value(queryId); - } + int doQuery(QString query, QString namespaces, QByteArray data, QList<QDeclarativeXmlListModelRole *>* roleObjects, QStringList keyRoleResultsCache); + void abort(int id); - QDeclarativeXmlQueryResult result; - result.queryId = job.queryId; - doQueryJob(&job, &result); - doSubQueryJob(&job, &result); + void processJobs(); - { - QMutexLocker ml(&m_mutex); - if (m_jobs.contains(queryId)) { - emit queryCompleted(result); - m_jobs.remove(queryId); - } - } - } + static QDeclarativeXmlQueryEngine *instance(QDeclarativeEngine *engine); -Q_SIGNALS: +signals: void queryCompleted(const QDeclarativeXmlQueryResult &); void error(void*, const QString&); protected: - + void run(); private: + void processQuery(XmlQueryJob *job); void doQueryJob(XmlQueryJob *job, QDeclarativeXmlQueryResult *currentResult); void doSubQueryJob(XmlQueryJob *job, QDeclarativeXmlQueryResult *currentResult); void getValuesOfKeyRoles(const XmlQueryJob& currentJob, QStringList *values, QXmlQuery *query) const; void addIndexToRangeList(QList<QDeclarativeXmlListRange> *ranges, int index) const; -private: QMutex m_mutex; - QThread m_thread; - QMap<int, XmlQueryJob> m_jobs; + QDeclarativeXmlQueryThreadObject *m_threadObject; + QList<XmlQueryJob> m_jobs; + QSet<int> m_cancelledJobs; QAtomicInt m_queryIds; + + QDeclarativeEngine *m_engine; + QObject *m_eventLoopQuitHack; + + static QHash<QDeclarativeEngine *,QDeclarativeXmlQueryEngine*> queryEngines; + static QMutex queryEnginesMutex; }; +QHash<QDeclarativeEngine *,QDeclarativeXmlQueryEngine*> QDeclarativeXmlQueryEngine::queryEngines; +QMutex QDeclarativeXmlQueryEngine::queryEnginesMutex; + + +QDeclarativeXmlQueryThreadObject::QDeclarativeXmlQueryThreadObject(QDeclarativeXmlQueryEngine *e) + : m_queryEngine(e) +{ +} + +void QDeclarativeXmlQueryThreadObject::processJobs() +{ + QCoreApplication::postEvent(this, new QEvent(QEvent::User)); +} + +bool QDeclarativeXmlQueryThreadObject::event(QEvent *e) +{ + if (e->type() == QEvent::User) { + m_queryEngine->processJobs(); + return true; + } else { + return QObject::event(e); + } +} + + + +QDeclarativeXmlQueryEngine::QDeclarativeXmlQueryEngine(QDeclarativeEngine *eng) +: QThread(eng), m_threadObject(0), m_queryIds(XMLLISTMODEL_CLEAR_ID + 1), m_engine(eng), m_eventLoopQuitHack(0) +{ + qRegisterMetaType<QDeclarativeXmlQueryResult>("QDeclarativeXmlQueryResult"); -Q_GLOBAL_STATIC(QDeclarativeXmlQuery, globalXmlQuery) + m_eventLoopQuitHack = new QObject; + m_eventLoopQuitHack->moveToThread(this); + connect(m_eventLoopQuitHack, SIGNAL(destroyed(QObject*)), SLOT(quit()), Qt::DirectConnection); + start(QThread::IdlePriority); +} -void QDeclarativeXmlQuery::doQueryJob(XmlQueryJob *currentJob, QDeclarativeXmlQueryResult *currentResult) +QDeclarativeXmlQueryEngine::~QDeclarativeXmlQueryEngine() +{ + queryEnginesMutex.lock(); + queryEngines.remove(m_engine); + queryEnginesMutex.unlock(); + + m_eventLoopQuitHack->deleteLater(); + wait(); +} + +int QDeclarativeXmlQueryEngine::doQuery(QString query, QString namespaces, QByteArray data, QList<QDeclarativeXmlListModelRole *>* roleObjects, QStringList keyRoleResultsCache) { + { + QMutexLocker m1(&m_mutex); + m_queryIds.ref(); + if (m_queryIds <= 0) + m_queryIds = 1; + } + + XmlQueryJob job; + job.queryId = m_queryIds; + job.data = data; + job.query = QLatin1String("doc($src)") + query; + job.namespaces = namespaces; + job.keyRoleResultsCache = keyRoleResultsCache; + + for (int i=0; i<roleObjects->count(); i++) { + if (!roleObjects->at(i)->isValid()) { + job.roleQueries << QString(); + continue; + } + job.roleQueries << roleObjects->at(i)->query(); + job.roleQueryErrorId << static_cast<void*>(roleObjects->at(i)); + if (roleObjects->at(i)->isKey()) + job.keyRoleQueries << job.roleQueries.last(); + } + + { + QMutexLocker ml(&m_mutex); + m_jobs.append(job); + if (m_threadObject) + m_threadObject->processJobs(); + } + + return job.queryId; +} + +void QDeclarativeXmlQueryEngine::abort(int id) +{ + QMutexLocker ml(&m_mutex); + if (id != -1) { + m_cancelledJobs.insert(id); + if (m_threadObject) + m_threadObject->processJobs(); + } +} + +void QDeclarativeXmlQueryEngine::run() +{ + m_mutex.lock(); + m_threadObject = new QDeclarativeXmlQueryThreadObject(this); + m_mutex.unlock(); + + processJobs(); + exec(); + + delete m_threadObject; + m_threadObject = 0; +} + +void QDeclarativeXmlQueryEngine::processJobs() +{ + QMutexLocker locker(&m_mutex); + + while (true) { + if (m_cancelledJobs.isEmpty() && m_jobs.isEmpty()) + return; + + if (!m_cancelledJobs.isEmpty()) { + for (QList<XmlQueryJob>::Iterator it = m_jobs.begin(); it != m_jobs.end(); ++it) { + int queryId = (*it).queryId; + if (m_cancelledJobs.remove(queryId)) + it = m_jobs.erase(it); + } + m_cancelledJobs.clear(); + } + + if (!m_jobs.isEmpty()) { + XmlQueryJob currentJob = m_jobs.takeLast(); + + locker.unlock(); + processQuery(¤tJob); + locker.relock(); + } + } +} + +QDeclarativeXmlQueryEngine *QDeclarativeXmlQueryEngine::instance(QDeclarativeEngine *engine) +{ + queryEnginesMutex.lock(); + QDeclarativeXmlQueryEngine *queryEng = queryEngines.value(engine); + if (!queryEng) { + queryEng = new QDeclarativeXmlQueryEngine(engine); + queryEngines.insert(engine, queryEng); + } + queryEnginesMutex.unlock(); + + return queryEng; +} + +void QDeclarativeXmlQueryEngine::processQuery(XmlQueryJob *job) +{ + QDeclarativeXmlQueryResult result; + result.queryId = job->queryId; + doQueryJob(job, &result); + doSubQueryJob(job, &result); + + { + QMutexLocker ml(&m_mutex); + if (m_cancelledJobs.contains(job->queryId)) { + m_cancelledJobs.remove(job->queryId); + } else { + emit queryCompleted(result); + } + } +} + +void QDeclarativeXmlQueryEngine::doQueryJob(XmlQueryJob *currentJob, QDeclarativeXmlQueryResult *currentResult) { Q_ASSERT(currentJob->queryId != -1); @@ -293,7 +405,7 @@ void QDeclarativeXmlQuery::doQueryJob(XmlQueryJob *currentJob, QDeclarativeXmlQu currentResult->size = (count > 0 ? count : 0); } -void QDeclarativeXmlQuery::getValuesOfKeyRoles(const XmlQueryJob& currentJob, QStringList *values, QXmlQuery *query) const +void QDeclarativeXmlQueryEngine::getValuesOfKeyRoles(const XmlQueryJob& currentJob, QStringList *values, QXmlQuery *query) const { const QStringList &keysQueries = currentJob.keyRoleQueries; QString keysQuery; @@ -314,7 +426,7 @@ void QDeclarativeXmlQuery::getValuesOfKeyRoles(const XmlQueryJob& currentJob, QS } } -void QDeclarativeXmlQuery::addIndexToRangeList(QList<QDeclarativeXmlListRange> *ranges, int index) const { +void QDeclarativeXmlQueryEngine::addIndexToRangeList(QList<QDeclarativeXmlListRange> *ranges, int index) const { if (ranges->isEmpty()) ranges->append(qMakePair(index, 1)); else if (ranges->last().first + ranges->last().second == index) @@ -323,7 +435,7 @@ void QDeclarativeXmlQuery::addIndexToRangeList(QList<QDeclarativeXmlListRange> * ranges->append(qMakePair(index, 1)); } -void QDeclarativeXmlQuery::doSubQueryJob(XmlQueryJob *currentJob, QDeclarativeXmlQueryResult *currentResult) +void QDeclarativeXmlQueryEngine::doSubQueryJob(XmlQueryJob *currentJob, QDeclarativeXmlQueryResult *currentResult) { Q_ASSERT(currentJob->queryId != -1); @@ -583,10 +695,6 @@ void QDeclarativeXmlListModelPrivate::clear_role(QDeclarativeListProperty<QDecla QDeclarativeXmlListModel::QDeclarativeXmlListModel(QObject *parent) : QListModelInterface(*(new QDeclarativeXmlListModelPrivate), parent) { - connect(globalXmlQuery(), SIGNAL(queryCompleted(QDeclarativeXmlQueryResult)), - this, SLOT(queryCompleted(QDeclarativeXmlQueryResult))); - connect(globalXmlQuery(), SIGNAL(error(void*,QString)), - this, SLOT(queryError(void*,QString))); } QDeclarativeXmlListModel::~QDeclarativeXmlListModel() @@ -852,6 +960,12 @@ void QDeclarativeXmlListModel::classBegin() { Q_D(QDeclarativeXmlListModel); d->isComponentComplete = false; + + QDeclarativeXmlQueryEngine *queryEngine = QDeclarativeXmlQueryEngine::instance(qmlEngine(this)); + connect(queryEngine, SIGNAL(queryCompleted(QDeclarativeXmlQueryResult)), + SLOT(queryCompleted(QDeclarativeXmlQueryResult))); + connect(queryEngine, SIGNAL(error(void*,QString)), + SLOT(queryError(void*,QString))); } void QDeclarativeXmlListModel::componentComplete() @@ -881,7 +995,7 @@ void QDeclarativeXmlListModel::reload() if (!d->isComponentComplete) return; - globalXmlQuery()->abort(d->queryId); + QDeclarativeXmlQueryEngine::instance(qmlEngine(this))->abort(d->queryId); d->queryId = -1; if (d->size < 0) @@ -897,7 +1011,7 @@ void QDeclarativeXmlListModel::reload() } if (!d->xml.isEmpty()) { - d->queryId = globalXmlQuery()->doQuery(d->query, d->namespaces, d->xml.toUtf8(), &d->roleObjects, d->keyRoleResultsCache); + d->queryId = QDeclarativeXmlQueryEngine::instance(qmlEngine(this))->doQuery(d->query, d->namespaces, d->xml.toUtf8(), &d->roleObjects, d->keyRoleResultsCache); d->notifyQueryStarted(false); } else if (d->src.isEmpty()) { @@ -958,7 +1072,7 @@ void QDeclarativeXmlListModel::requestFinished() d->queryId = XMLLISTMODEL_CLEAR_ID; QTimer::singleShot(0, this, SLOT(dataCleared())); } else { - d->queryId = globalXmlQuery()->doQuery(d->query, d->namespaces, data, &d->roleObjects, d->keyRoleResultsCache); + d->queryId = QDeclarativeXmlQueryEngine::instance(qmlEngine(this))->doQuery(d->query, d->namespaces, data, &d->roleObjects, d->keyRoleResultsCache); } disconnect(d->reply, 0, this, 0); d->reply->deleteLater(); |