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QFactoryLoader: use RAII for QLibraryPrivate

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Good style.

Change-Id: I5e52dc5b093c43a3b678fffd16b5f15fddb9d8b4
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
This commit is contained in:
Thiago Macieira 2021-11-09 09:37:13 -08:00 committed by Edward Welbourne
parent d5cac0b19b
commit b7a8051269
1 changed files with 10 additions and 9 deletions
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19
src/corelib/plugin/qfactoryloader.cpp
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@ -164,6 +164,11 @@ QFactoryLoaderPrivate::~QFactoryLoaderPrivate()
inline void QFactoryLoaderPrivate::updateSinglePath(const QString &path)
{
struct LibraryReleaser {
void operator()(QLibraryPrivate *library)
{ if (library) library->release(); }
};
// If we've already loaded, skip it...
if (loadedPaths.hasSeen(path))
return;
@ -203,11 +208,11 @@ inline void QFactoryLoaderPrivate::updateSinglePath(const QString &path)
Q_TRACE(QFactoryLoader_update, fileName);
QLibraryPrivate *library = QLibraryPrivate::findOrCreate(QFileInfo(fileName).canonicalFilePath());
std::unique_ptr<QLibraryPrivate, LibraryReleaser> library;
library.reset(QLibraryPrivate::findOrCreate(QFileInfo(fileName).canonicalFilePath()));
if (!library->isPlugin()) {
qCDebug(lcFactoryLoader) << library->errorString << Qt::endl
<< " not a plugin";
library->release();
continue;
}
@ -225,10 +230,8 @@ inline void QFactoryLoaderPrivate::updateSinglePath(const QString &path)
}
qCDebug(lcFactoryLoader) << "Got keys from plugin meta data" << keys;
if (!metaDataOk) {
library->release();
if (!metaDataOk)
continue;
}
int keyUsageCount = 0;
for (int k = 0; k < keys.count(); ++k) {
@ -244,16 +247,14 @@ inline void QFactoryLoaderPrivate::updateSinglePath(const QString &path)
prev_qt_version = int(previous->metaData.value(QtPluginMetaDataKeys::QtVersion).toInteger());
int qt_version = int(library->metaData.value(QtPluginMetaDataKeys::QtVersion).toInteger());
if (!previous || (prev_qt_version > QtVersionNoPatch && qt_version <= QtVersionNoPatch)) {
keyMap[key] = library;
keyMap[key] = library.get(); // we WILL .release()
++keyUsageCount;
}
}
if (keyUsageCount || keys.isEmpty()) {
library->setLoadHints(QLibrary::PreventUnloadHint); // once loaded, don't unload
QMutexLocker locker(&mutex);
libraryList += library;
} else {
library->release();
libraryList += library.release();
}
};
}