diff options
| -rw-r--r-- | src/qml/qml/qqmlmetatype.cpp | 8 | ||||
| -rw-r--r-- | src/qml/qml/qqmlmetatype_p.h | 1 | ||||
| -rw-r--r-- | tests/auto/qml/qqmlenginecleanup/qqmlenginecleanup.pro | 2 | ||||
| -rw-r--r-- | tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp | 59 |
4 files changed, 61 insertions, 9 deletions
diff --git a/src/qml/qml/qqmlmetatype.cpp b/src/qml/qml/qqmlmetatype.cpp index 8f5d11a96f..ac670bdabb 100644 --- a/src/qml/qml/qqmlmetatype.cpp +++ b/src/qml/qml/qqmlmetatype.cpp @@ -1144,6 +1144,13 @@ void QQmlType::derefHandle(QQmlTypePrivate *priv) delete priv; } +int QQmlType::refCount(QQmlTypePrivate *priv) +{ + if (priv) + return priv->refCount; + return -1; +} + namespace { template <typename QQmlTypeContainer> void removeQQmlTypePrivate(QQmlTypeContainer &container, const QQmlTypePrivate *reference) @@ -1334,6 +1341,7 @@ void qmlClearTypeRegistrations() // Declared in qqml.h data->urlToNonFileImportType.clear(); data->metaObjectToType.clear(); data->uriToModule.clear(); + data->undeletableTypes.clear(); QQmlEnginePrivate::baseModulesUninitialized = true; //So the engine re-registers its types #if QT_CONFIG(library) diff --git a/src/qml/qml/qqmlmetatype_p.h b/src/qml/qml/qqmlmetatype_p.h index 9a7736ffcd..74b1cf0e06 100644 --- a/src/qml/qml/qqmlmetatype_p.h +++ b/src/qml/qml/qqmlmetatype_p.h @@ -245,6 +245,7 @@ public: QQmlTypePrivate *priv() const { return d; } static void refHandle(QQmlTypePrivate *priv); static void derefHandle(QQmlTypePrivate *priv); + static int refCount(QQmlTypePrivate *priv); enum RegistrationType { CppType = 0, diff --git a/tests/auto/qml/qqmlenginecleanup/qqmlenginecleanup.pro b/tests/auto/qml/qqmlenginecleanup/qqmlenginecleanup.pro index 5bcec9f5b4..90508609a8 100644 --- a/tests/auto/qml/qqmlenginecleanup/qqmlenginecleanup.pro +++ b/tests/auto/qml/qqmlenginecleanup/qqmlenginecleanup.pro @@ -6,4 +6,4 @@ include (../../shared/util.pri) SOURCES += tst_qqmlenginecleanup.cpp -QT += testlib qml +QT += testlib qml qml-private diff --git a/tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp b/tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp index d0a8b6401f..7e9a1524b0 100644 --- a/tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp +++ b/tests/auto/qml/qqmlenginecleanup/tst_qqmlenginecleanup.cpp @@ -31,6 +31,8 @@ #include <QtQml/qqml.h> #include <QtQml/QQmlEngine> #include <QtQml/QQmlComponent> +#include <private/qhashedstring_p.h> +#include <private/qqmlmetatype_p.h> //Separate test, because if engine cleanup attempts fail they can easily break unrelated tests class tst_qqmlenginecleanup : public QQmlDataTest @@ -44,41 +46,82 @@ private slots: void test_valueTypeProviderModule(); // QTBUG-43004 }; +// A wrapper around QQmlComponent to ensure the temporary reference counts +// on the type data as a result of the main thread <> loader thread communication +// are dropped. Regular Synchronous loading will leave us with an event posted +// to the gui thread and an extra refcount that will only be dropped after the +// event delivery. A plain sendPostedEvents() however is insufficient because +// we can't be sure that the event is posted after the constructor finished. +class CleanlyLoadingComponent : public QQmlComponent +{ +public: + CleanlyLoadingComponent(QQmlEngine *engine, const QUrl &url) + : QQmlComponent(engine, url, QQmlComponent::Asynchronous) + { waitForLoad(); } + CleanlyLoadingComponent(QQmlEngine *engine, const QString &fileName) + : QQmlComponent(engine, fileName, QQmlComponent::Asynchronous) + { waitForLoad(); } + + void waitForLoad() + { + QTRY_VERIFY(status() == QQmlComponent::Ready || status() == QQmlComponent::Error); + } +}; + void tst_qqmlenginecleanup::test_qmlClearTypeRegistrations() { //Test for preventing memory leaks is in tests/manual/qmltypememory QQmlEngine* engine; - QQmlComponent* component; + CleanlyLoadingComponent* component; QUrl testFile = testFileUrl("types.qml"); + const auto qmlTypeForTestType = []() { + return QQmlMetaType::qmlType(QStringLiteral("TestTypeCpp"), QStringLiteral("Test"), 2, 0); + }; + + QVERIFY(!qmlTypeForTestType().isValid()); qmlRegisterType<QObject>("Test", 2, 0, "TestTypeCpp"); + QVERIFY(qmlTypeForTestType().isValid()); + engine = new QQmlEngine; - component = new QQmlComponent(engine, testFile); + component = new CleanlyLoadingComponent(engine, testFile); QVERIFY(component->isReady()); - delete engine; delete component; - qmlClearTypeRegistrations(); + delete engine; + + { + auto cppType = qmlTypeForTestType(); + + qmlClearTypeRegistrations(); + QVERIFY(!qmlTypeForTestType().isValid()); + + // cppType should hold the last ref, qmlClearTypeRegistration should have wiped + // all internal references. + QCOMPARE(QQmlType::refCount(cppType.priv()), 1); + } //2nd run verifies that types can reload after a qmlClearTypeRegistrations qmlRegisterType<QObject>("Test", 2, 0, "TestTypeCpp"); + QVERIFY(qmlTypeForTestType().isValid()); engine = new QQmlEngine; - component = new QQmlComponent(engine, testFile); + component = new CleanlyLoadingComponent(engine, testFile); QVERIFY(component->isReady()); - delete engine; delete component; + delete engine; qmlClearTypeRegistrations(); + QVERIFY(!qmlTypeForTestType().isValid()); //3nd run verifies that TestTypeCpp is no longer registered engine = new QQmlEngine; - component = new QQmlComponent(engine, testFile); + component = new CleanlyLoadingComponent(engine, testFile); QVERIFY(component->isError()); QCOMPARE(component->errorString(), testFile.toString() +":33 module \"Test\" is not installed\n"); - delete engine; delete component; + delete engine; } static void cleanState(QQmlEngine **e) |