| Absolute File Name: | /home/qt/qt5_coco/qt5/qtbase/src/corelib/plugin/qpluginloader.cpp |
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| 1 | /**************************************************************************** | - | ||||||||||||
| 2 | ** | - | ||||||||||||
| 3 | ** Copyright (C) 2016 The Qt Company Ltd. | - | ||||||||||||
| 4 | ** Contact: https://www.qt.io/licensing/ | - | ||||||||||||
| 5 | ** | - | ||||||||||||
| 6 | ** This file is part of the QtCore 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 "qplatformdefs.h" | - | ||||||||||||
| 41 | - | |||||||||||||
| 42 | #include "qplugin.h" | - | ||||||||||||
| 43 | #include "qcoreapplication.h" | - | ||||||||||||
| 44 | #include "qpluginloader.h" | - | ||||||||||||
| 45 | #include <qfileinfo.h> | - | ||||||||||||
| 46 | #include "qlibrary_p.h" | - | ||||||||||||
| 47 | #include "qdebug.h" | - | ||||||||||||
| 48 | #include "qdir.h" | - | ||||||||||||
| 49 | - | |||||||||||||
| 50 | QT_BEGIN_NAMESPACE | - | ||||||||||||
| 51 | - | |||||||||||||
| 52 | #ifndef QT_NO_LIBRARY | - | ||||||||||||
| 53 | - | |||||||||||||
| 54 | /*! | - | ||||||||||||
| 55 | \class QPluginLoader | - | ||||||||||||
| 56 | \inmodule QtCore | - | ||||||||||||
| 57 | \reentrant | - | ||||||||||||
| 58 | \brief The QPluginLoader class loads a plugin at run-time. | - | ||||||||||||
| 59 | - | |||||||||||||
| 60 | - | |||||||||||||
| 61 | \ingroup plugins | - | ||||||||||||
| 62 | - | |||||||||||||
| 63 | QPluginLoader provides access to a \l{How to Create Qt | - | ||||||||||||
| 64 | Plugins}{Qt plugin}. A Qt plugin is stored in a shared library (a | - | ||||||||||||
| 65 | DLL) and offers these benefits over shared libraries accessed | - | ||||||||||||
| 66 | using QLibrary: | - | ||||||||||||
| 67 | - | |||||||||||||
| 68 | \list | - | ||||||||||||
| 69 | \li QPluginLoader checks that a plugin is linked against the same | - | ||||||||||||
| 70 | version of Qt as the application. | - | ||||||||||||
| 71 | \li QPluginLoader provides direct access to a root component object | - | ||||||||||||
| 72 | (instance()), instead of forcing you to resolve a C function manually. | - | ||||||||||||
| 73 | \endlist | - | ||||||||||||
| 74 | - | |||||||||||||
| 75 | An instance of a QPluginLoader object operates on a single shared | - | ||||||||||||
| 76 | library file, which we call a plugin. It provides access to the | - | ||||||||||||
| 77 | functionality in the plugin in a platform-independent way. To | - | ||||||||||||
| 78 | specify which plugin to load, either pass a file name in | - | ||||||||||||
| 79 | the constructor or set it with setFileName(). | - | ||||||||||||
| 80 | - | |||||||||||||
| 81 | The most important functions are load() to dynamically load the | - | ||||||||||||
| 82 | plugin file, isLoaded() to check whether loading was successful, | - | ||||||||||||
| 83 | and instance() to access the root component in the plugin. The | - | ||||||||||||
| 84 | instance() function implicitly tries to load the plugin if it has | - | ||||||||||||
| 85 | not been loaded yet. Multiple instances of QPluginLoader can be | - | ||||||||||||
| 86 | used to access the same physical plugin. | - | ||||||||||||
| 87 | - | |||||||||||||
| 88 | Once loaded, plugins remain in memory until all instances of | - | ||||||||||||
| 89 | QPluginLoader has been unloaded, or until the application | - | ||||||||||||
| 90 | terminates. You can attempt to unload a plugin using unload(), | - | ||||||||||||
| 91 | but if other instances of QPluginLoader are using the same | - | ||||||||||||
| 92 | library, the call will fail, and unloading will only happen when | - | ||||||||||||
| 93 | every instance has called unload(). Right before the unloading | - | ||||||||||||
| 94 | happen, the root component will also be deleted. | - | ||||||||||||
| 95 | - | |||||||||||||
| 96 | See \l{How to Create Qt Plugins} for more information about | - | ||||||||||||
| 97 | how to make your application extensible through plugins. | - | ||||||||||||
| 98 | - | |||||||||||||
| 99 | Note that the QPluginLoader cannot be used if your application is | - | ||||||||||||
| 100 | statically linked against Qt. In this case, you will also have to | - | ||||||||||||
| 101 | link to plugins statically. You can use QLibrary if you need to | - | ||||||||||||
| 102 | load dynamic libraries in a statically linked application. | - | ||||||||||||
| 103 | - | |||||||||||||
| 104 | \sa QLibrary, {Plug & Paint Example} | - | ||||||||||||
| 105 | */ | - | ||||||||||||
| 106 | - | |||||||||||||
| 107 | /*! | - | ||||||||||||
| 108 | \class QStaticPlugin | - | ||||||||||||
| 109 | \inmodule QtCore | - | ||||||||||||
| 110 | \since 5.2 | - | ||||||||||||
| 111 | - | |||||||||||||
| 112 | \brief QStaticPlugin is a struct containing a reference to a | - | ||||||||||||
| 113 | static plugin instance together with its meta data. | - | ||||||||||||
| 114 | - | |||||||||||||
| 115 | \sa QPluginLoader, {How to Create Qt Plugins} | - | ||||||||||||
| 116 | */ | - | ||||||||||||
| 117 | - | |||||||||||||
| 118 | /*! | - | ||||||||||||
| 119 | \fn QObject *QStaticPlugin::instance() | - | ||||||||||||
| 120 | - | |||||||||||||
| 121 | Returns the plugin instance. | - | ||||||||||||
| 122 | - | |||||||||||||
| 123 | \sa QPluginLoader::staticInstances() | - | ||||||||||||
| 124 | */ | - | ||||||||||||
| 125 | - | |||||||||||||
| 126 | /*! | - | ||||||||||||
| 127 | \fn const char *QStaticPlugin::rawMetaData() | - | ||||||||||||
| 128 | - | |||||||||||||
| 129 | Returns the raw meta data for the plugin. | - | ||||||||||||
| 130 | - | |||||||||||||
| 131 | \sa metaData(), Q_PLUGIN_METADATA() | - | ||||||||||||
| 132 | */ | - | ||||||||||||
| 133 | - | |||||||||||||
| 134 | /*! | - | ||||||||||||
| 135 | Constructs a plugin loader with the given \a parent. | - | ||||||||||||
| 136 | */ | - | ||||||||||||
| 137 | QPluginLoader::QPluginLoader(QObject *parent) | - | ||||||||||||
| 138 | : QObject(parent), d(0), did_load(false) | - | ||||||||||||
| 139 | { | - | ||||||||||||
| 140 | } executed 7 times by 1 test: end of blockExecuted by:
| 7 | ||||||||||||
| 141 | - | |||||||||||||
| 142 | /*! | - | ||||||||||||
| 143 | Constructs a plugin loader with the given \a parent that will | - | ||||||||||||
| 144 | load the plugin specified by \a fileName. | - | ||||||||||||
| 145 | - | |||||||||||||
| 146 | To be loadable, the file's suffix must be a valid suffix for a | - | ||||||||||||
| 147 | loadable library in accordance with the platform, e.g. \c .so on | - | ||||||||||||
| 148 | Unix, - \c .dylib on \macos and iOS, and \c .dll on Windows. The suffix | - | ||||||||||||
| 149 | can be verified with QLibrary::isLibrary(). | - | ||||||||||||
| 150 | - | |||||||||||||
| 151 | \sa setFileName() | - | ||||||||||||
| 152 | */ | - | ||||||||||||
| 153 | QPluginLoader::QPluginLoader(const QString &fileName, QObject *parent) | - | ||||||||||||
| 154 | : QObject(parent), d(0), did_load(false) | - | ||||||||||||
| 155 | { | - | ||||||||||||
| 156 | setFileName(fileName); | - | ||||||||||||
| 157 | setLoadHints(QLibrary::PreventUnloadHint); | - | ||||||||||||
| 158 | } executed 21 times by 2 tests: end of blockExecuted by:
| 21 | ||||||||||||
| 159 | - | |||||||||||||
| 160 | /*! | - | ||||||||||||
| 161 | Destroys the QPluginLoader object. | - | ||||||||||||
| 162 | - | |||||||||||||
| 163 | Unless unload() was called explicitly, the plugin stays in memory | - | ||||||||||||
| 164 | until the application terminates. | - | ||||||||||||
| 165 | - | |||||||||||||
| 166 | \sa isLoaded(), unload() | - | ||||||||||||
| 167 | */ | - | ||||||||||||
| 168 | QPluginLoader::~QPluginLoader() | - | ||||||||||||
| 169 | { | - | ||||||||||||
| 170 | if (d)
| 1-27 | ||||||||||||
| 171 | d->release(); executed 27 times by 2 tests: d->release();Executed by:
| 27 | ||||||||||||
| 172 | } executed 28 times by 2 tests: end of blockExecuted by:
| 28 | ||||||||||||
| 173 | - | |||||||||||||
| 174 | /*! | - | ||||||||||||
| 175 | Returns the root component object of the plugin. The plugin is | - | ||||||||||||
| 176 | loaded if necessary. The function returns 0 if the plugin could | - | ||||||||||||
| 177 | not be loaded or if the root component object could not be | - | ||||||||||||
| 178 | instantiated. | - | ||||||||||||
| 179 | - | |||||||||||||
| 180 | If the root component object was destroyed, calling this function | - | ||||||||||||
| 181 | creates a new instance. | - | ||||||||||||
| 182 | - | |||||||||||||
| 183 | The root component, returned by this function, is not deleted when | - | ||||||||||||
| 184 | the QPluginLoader is destroyed. If you want to ensure that the root | - | ||||||||||||
| 185 | component is deleted, you should call unload() as soon you don't | - | ||||||||||||
| 186 | need to access the core component anymore. When the library is | - | ||||||||||||
| 187 | finally unloaded, the root component will automatically be deleted. | - | ||||||||||||
| 188 | - | |||||||||||||
| 189 | The component object is a QObject. Use qobject_cast() to access | - | ||||||||||||
| 190 | interfaces you are interested in. | - | ||||||||||||
| 191 | - | |||||||||||||
| 192 | \sa load() | - | ||||||||||||
| 193 | */ | - | ||||||||||||
| 194 | QObject *QPluginLoader::instance() | - | ||||||||||||
| 195 | { | - | ||||||||||||
| 196 | if (!isLoaded() && !load())
| 1-16 | ||||||||||||
| 197 | return 0; executed 4 times by 1 test: return 0;Executed by:
| 4 | ||||||||||||
| 198 | if (!d->inst && d->instance)
| 0-9 | ||||||||||||
| 199 | d->inst = d->instance(); executed 9 times by 2 tests: d->inst = d->instance();Executed by:
| 9 | ||||||||||||
| 200 | return d->inst.data(); executed 17 times by 2 tests: return d->inst.data();Executed by:
| 17 | ||||||||||||
| 201 | } | - | ||||||||||||
| 202 | - | |||||||||||||
| 203 | /*! | - | ||||||||||||
| 204 | Returns the meta data for this plugin. The meta data is data specified | - | ||||||||||||
| 205 | in a json format using the Q_PLUGIN_METADATA() macro when compiling | - | ||||||||||||
| 206 | the plugin. | - | ||||||||||||
| 207 | - | |||||||||||||
| 208 | The meta data can be queried in a fast and inexpensive way without | - | ||||||||||||
| 209 | actually loading the plugin. This makes it possible to e.g. store | - | ||||||||||||
| 210 | capabilities of the plugin in there, and make the decision whether to | - | ||||||||||||
| 211 | load the plugin dependent on this meta data. | - | ||||||||||||
| 212 | */ | - | ||||||||||||
| 213 | QJsonObject QPluginLoader::metaData() const | - | ||||||||||||
| 214 | { | - | ||||||||||||
| 215 | if (!d)
| 0 | ||||||||||||
| 216 | return QJsonObject(); never executed: return QJsonObject(); | 0 | ||||||||||||
| 217 | return d->metaData; never executed: return d->metaData; | 0 | ||||||||||||
| 218 | } | - | ||||||||||||
| 219 | - | |||||||||||||
| 220 | /*! | - | ||||||||||||
| 221 | Loads the plugin and returns \c true if the plugin was loaded | - | ||||||||||||
| 222 | successfully; otherwise returns \c false. Since instance() always | - | ||||||||||||
| 223 | calls this function before resolving any symbols it is not | - | ||||||||||||
| 224 | necessary to call it explicitly. In some situations you might want | - | ||||||||||||
| 225 | the plugin loaded in advance, in which case you would use this | - | ||||||||||||
| 226 | function. | - | ||||||||||||
| 227 | - | |||||||||||||
| 228 | \sa unload() | - | ||||||||||||
| 229 | */ | - | ||||||||||||
| 230 | bool QPluginLoader::load() | - | ||||||||||||
| 231 | { | - | ||||||||||||
| 232 | if (!d || d->fileName.isEmpty())
| 2-27 | ||||||||||||
| 233 | return false; executed 6 times by 1 test: return false;Executed by:
| 6 | ||||||||||||
| 234 | if (did_load)
| 0-23 | ||||||||||||
| 235 | return d->pHnd && d->instance; never executed: return d->pHnd && d->instance; | 0 | ||||||||||||
| 236 | if (!d->isPlugin())
| 11-12 | ||||||||||||
| 237 | return false; executed 12 times by 1 test: return false;Executed by:
| 12 | ||||||||||||
| 238 | did_load = true; | - | ||||||||||||
| 239 | return d->loadPlugin(); executed 11 times by 2 tests: return d->loadPlugin();Executed by:
| 11 | ||||||||||||
| 240 | } | - | ||||||||||||
| 241 | - | |||||||||||||
| 242 | - | |||||||||||||
| 243 | /*! | - | ||||||||||||
| 244 | Unloads the plugin and returns \c true if the plugin could be | - | ||||||||||||
| 245 | unloaded; otherwise returns \c false. | - | ||||||||||||
| 246 | - | |||||||||||||
| 247 | This happens automatically on application termination, so you | - | ||||||||||||
| 248 | shouldn't normally need to call this function. | - | ||||||||||||
| 249 | - | |||||||||||||
| 250 | If other instances of QPluginLoader are using the same plugin, the | - | ||||||||||||
| 251 | call will fail, and unloading will only happen when every instance | - | ||||||||||||
| 252 | has called unload(). | - | ||||||||||||
| 253 | - | |||||||||||||
| 254 | Don't try to delete the root component. Instead rely on | - | ||||||||||||
| 255 | that unload() will automatically delete it when needed. | - | ||||||||||||
| 256 | - | |||||||||||||
| 257 | \sa instance(), load() | - | ||||||||||||
| 258 | */ | - | ||||||||||||
| 259 | bool QPluginLoader::unload() | - | ||||||||||||
| 260 | { | - | ||||||||||||
| 261 | if (did_load) {
| 4-9 | ||||||||||||
| 262 | did_load = false; | - | ||||||||||||
| 263 | return d->unload(); executed 9 times by 1 test: return d->unload();Executed by:
| 9 | ||||||||||||
| 264 | } | - | ||||||||||||
| 265 | if (d) // Ouch
| 1-3 | ||||||||||||
| 266 | d->errorString = tr("The plugin was not loaded."); executed 3 times by 1 test: d->errorString = tr("The plugin was not loaded.");Executed by:
| 3 | ||||||||||||
| 267 | return false; executed 4 times by 1 test: return false;Executed by:
| 4 | ||||||||||||
| 268 | } | - | ||||||||||||
| 269 | - | |||||||||||||
| 270 | /*! | - | ||||||||||||
| 271 | Returns \c true if the plugin is loaded; otherwise returns \c false. | - | ||||||||||||
| 272 | - | |||||||||||||
| 273 | \sa load() | - | ||||||||||||
| 274 | */ | - | ||||||||||||
| 275 | bool QPluginLoader::isLoaded() const | - | ||||||||||||
| 276 | { | - | ||||||||||||
| 277 | return d && d->pHnd && d->instance; executed 22 times by 2 tests: return d && d->pHnd && d->instance;Executed by:
| 22 | ||||||||||||
| 278 | } | - | ||||||||||||
| 279 | - | |||||||||||||
| 280 | #if defined(QT_SHARED) | - | ||||||||||||
| 281 | static QString locatePlugin(const QString& fileName) | - | ||||||||||||
| 282 | { | - | ||||||||||||
| 283 | const bool isAbsolute = QDir::isAbsolutePath(fileName); | - | ||||||||||||
| 284 | if (isAbsolute) {
| 3-24 | ||||||||||||
| 285 | QFileInfo fi(fileName); | - | ||||||||||||
| 286 | if (fi.isFile()) {
| 1-23 | ||||||||||||
| 287 | return fi.canonicalFilePath(); executed 23 times by 2 tests: return fi.canonicalFilePath();Executed by:
| 23 | ||||||||||||
| 288 | } | - | ||||||||||||
| 289 | } executed 1 time by 1 test: end of blockExecuted by:
| 1 | ||||||||||||
| 290 | QStringList prefixes = QLibraryPrivate::prefixes_sys(); | - | ||||||||||||
| 291 | prefixes.prepend(QString()); | - | ||||||||||||
| 292 | QStringList suffixes = QLibraryPrivate::suffixes_sys(QString()); | - | ||||||||||||
| 293 | suffixes.prepend(QString()); | - | ||||||||||||
| 294 | - | |||||||||||||
| 295 | // Split up "subdir/filename" | - | ||||||||||||
| 296 | const int slash = fileName.lastIndexOf(QLatin1Char('/')); | - | ||||||||||||
| 297 | const QStringRef baseName = fileName.midRef(slash + 1); | - | ||||||||||||
| 298 | const QStringRef basePath = isAbsolute ? QStringRef() : fileName.leftRef(slash + 1); // keep the '/'
| 1-3 | ||||||||||||
| 299 | - | |||||||||||||
| 300 | const bool debug = qt_debug_component(); | - | ||||||||||||
| 301 | - | |||||||||||||
| 302 | QStringList paths; | - | ||||||||||||
| 303 | if (isAbsolute) {
| 1-3 | ||||||||||||
| 304 | paths.append(fileName.left(slash)); // don't include the '/' | - | ||||||||||||
| 305 | } else { executed 1 time by 1 test: end of blockExecuted by:
| 1 | ||||||||||||
| 306 | paths = QCoreApplication::libraryPaths(); | - | ||||||||||||
| 307 | paths.prepend(QStringLiteral(".")); // search in current dir first executed 3 times by 1 test: return qstring_literal_temp;Executed by:
| 3 | ||||||||||||
| 308 | } executed 3 times by 1 test: end of blockExecuted by:
| 3 | ||||||||||||
| 309 | - | |||||||||||||
| 310 | for (const QString &path : qAsConst(paths)) { | - | ||||||||||||
| 311 | for (const QString &prefix : qAsConst(prefixes)) { | - | ||||||||||||
| 312 | for (const QString &suffix : qAsConst(suffixes)) { | - | ||||||||||||
| 313 | const QString fn = path + QLatin1Char('/') + basePath + prefix + baseName + suffix; | - | ||||||||||||
| 314 | if (debug)
| 0-36 | ||||||||||||
| 315 | qDebug() << "Trying..." << fn; never executed: QMessageLogger(__FILE__, 315, __PRETTY_FUNCTION__).debug() << "Trying..." << fn; | 0 | ||||||||||||
| 316 | if (QFileInfo(fn).isFile())
| 2-34 | ||||||||||||
| 317 | return fn; executed 2 times by 1 test: return fn;Executed by:
| 2 | ||||||||||||
| 318 | } executed 34 times by 1 test: end of blockExecuted by:
| 34 | ||||||||||||
| 319 | } executed 16 times by 1 test: end of blockExecuted by:
| 16 | ||||||||||||
| 320 | } executed 7 times by 1 test: end of blockExecuted by:
| 7 | ||||||||||||
| 321 | if (debug)
| 0-2 | ||||||||||||
| 322 | qDebug() << fileName << "not found"; never executed: QMessageLogger(__FILE__, 322, __PRETTY_FUNCTION__).debug() << fileName << "not found"; | 0 | ||||||||||||
| 323 | return QString(); executed 2 times by 1 test: return QString();Executed by:
| 2 | ||||||||||||
| 324 | } | - | ||||||||||||
| 325 | #endif | - | ||||||||||||
| 326 | - | |||||||||||||
| 327 | /*! | - | ||||||||||||
| 328 | \property QPluginLoader::fileName | - | ||||||||||||
| 329 | \brief the file name of the plugin | - | ||||||||||||
| 330 | - | |||||||||||||
| 331 | We recommend omitting the file's suffix in the file name, since | - | ||||||||||||
| 332 | QPluginLoader will automatically look for the file with the appropriate | - | ||||||||||||
| 333 | suffix (see QLibrary::isLibrary()). | - | ||||||||||||
| 334 | - | |||||||||||||
| 335 | When loading the plugin, QPluginLoader searches in the current directory and | - | ||||||||||||
| 336 | in all plugin locations specified by QCoreApplication::libraryPaths(), | - | ||||||||||||
| 337 | unless the file name has an absolute path. After loading the plugin | - | ||||||||||||
| 338 | successfully, fileName() returns the fully-qualified file name of | - | ||||||||||||
| 339 | the plugin, including the full path to the plugin if one was given | - | ||||||||||||
| 340 | in the constructor or passed to setFileName(). | - | ||||||||||||
| 341 | - | |||||||||||||
| 342 | If the file name does not exist, it will not be set. This property | - | ||||||||||||
| 343 | will then contain an empty string. | - | ||||||||||||
| 344 | - | |||||||||||||
| 345 | By default, this property contains an empty string. | - | ||||||||||||
| 346 | - | |||||||||||||
| 347 | \sa load() | - | ||||||||||||
| 348 | */ | - | ||||||||||||
| 349 | void QPluginLoader::setFileName(const QString &fileName) | - | ||||||||||||
| 350 | { | - | ||||||||||||
| 351 | #if defined(QT_SHARED) | - | ||||||||||||
| 352 | QLibrary::LoadHints lh = QLibrary::PreventUnloadHint; | - | ||||||||||||
| 353 | if (d) {
| 1-26 | ||||||||||||
| 354 | lh = d->loadHints(); | - | ||||||||||||
| 355 | d->release(); | - | ||||||||||||
| 356 | d = 0; | - | ||||||||||||
| 357 | did_load = false; | - | ||||||||||||
| 358 | } executed 1 time by 1 test: end of blockExecuted by:
| 1 | ||||||||||||
| 359 | - | |||||||||||||
| 360 | const QString fn = locatePlugin(fileName); | - | ||||||||||||
| 361 | - | |||||||||||||
| 362 | d = QLibraryPrivate::findOrCreate(fn, QString(), lh); | - | ||||||||||||
| 363 | if (!fn.isEmpty())
| 2-25 | ||||||||||||
| 364 | d->updatePluginState(); executed 25 times by 2 tests: d->updatePluginState();Executed by:
| 25 | ||||||||||||
| 365 | - | |||||||||||||
| 366 | #else | - | ||||||||||||
| 367 | if (qt_debug_component()) { | - | ||||||||||||
| 368 | qWarning("Cannot load %s into a statically linked Qt library.", | - | ||||||||||||
| 369 | (const char*)QFile::encodeName(fileName)); | - | ||||||||||||
| 370 | } | - | ||||||||||||
| 371 | Q_UNUSED(fileName); | - | ||||||||||||
| 372 | #endif | - | ||||||||||||
| 373 | } executed 27 times by 2 tests: end of blockExecuted by:
| 27 | ||||||||||||
| 374 | - | |||||||||||||
| 375 | QString QPluginLoader::fileName() const | - | ||||||||||||
| 376 | { | - | ||||||||||||
| 377 | if (d)
| 0 | ||||||||||||
| 378 | return d->fileName; never executed: return d->fileName; | 0 | ||||||||||||
| 379 | return QString(); never executed: return QString(); | 0 | ||||||||||||
| 380 | } | - | ||||||||||||
| 381 | - | |||||||||||||
| 382 | /*! | - | ||||||||||||
| 383 | \since 4.2 | - | ||||||||||||
| 384 | - | |||||||||||||
| 385 | Returns a text string with the description of the last error that occurred. | - | ||||||||||||
| 386 | */ | - | ||||||||||||
| 387 | QString QPluginLoader::errorString() const | - | ||||||||||||
| 388 | { | - | ||||||||||||
| 389 | return (!d || d->errorString.isEmpty()) ? tr("Unknown error") : d->errorString; executed 26 times by 1 test: return (!d || d->errorString.isEmpty()) ? tr("Unknown error") : d->errorString;Executed by:
| 26 | ||||||||||||
| 390 | } | - | ||||||||||||
| 391 | - | |||||||||||||
| 392 | /*! \since 4.4 | - | ||||||||||||
| 393 | - | |||||||||||||
| 394 | \property QPluginLoader::loadHints | - | ||||||||||||
| 395 | \brief Give the load() function some hints on how it should behave. | - | ||||||||||||
| 396 | - | |||||||||||||
| 397 | You can give hints on how the symbols in the plugin are | - | ||||||||||||
| 398 | resolved. By default since Qt 5.7, QLibrary::PreventUnloadHint is set. | - | ||||||||||||
| 399 | - | |||||||||||||
| 400 | See the documentation of QLibrary::loadHints for a complete | - | ||||||||||||
| 401 | description of how this property works. | - | ||||||||||||
| 402 | - | |||||||||||||
| 403 | \sa QLibrary::loadHints | - | ||||||||||||
| 404 | */ | - | ||||||||||||
| 405 | - | |||||||||||||
| 406 | void QPluginLoader::setLoadHints(QLibrary::LoadHints loadHints) | - | ||||||||||||
| 407 | { | - | ||||||||||||
| 408 | if (!d) {
| 1-22 | ||||||||||||
| 409 | d = QLibraryPrivate::findOrCreate(QString()); // ugly, but we need a d-ptr | - | ||||||||||||
| 410 | d->errorString.clear(); | - | ||||||||||||
| 411 | } executed 1 time by 1 test: end of blockExecuted by:
| 1 | ||||||||||||
| 412 | d->setLoadHints(loadHints); | - | ||||||||||||
| 413 | } executed 23 times by 2 tests: end of blockExecuted by:
| 23 | ||||||||||||
| 414 | - | |||||||||||||
| 415 | QLibrary::LoadHints QPluginLoader::loadHints() const | - | ||||||||||||
| 416 | { | - | ||||||||||||
| 417 | return d ? d->loadHints() : QLibrary::LoadHints(); executed 2 times by 1 test: return d ? d->loadHints() : QLibrary::LoadHints();Executed by:
| 2 | ||||||||||||
| 418 | } | - | ||||||||||||
| 419 | - | |||||||||||||
| 420 | #endif // QT_NO_LIBRARY | - | ||||||||||||
| 421 | - | |||||||||||||
| 422 | typedef QVector<QStaticPlugin> StaticPluginList; | - | ||||||||||||
| 423 | Q_GLOBAL_STATIC(StaticPluginList, staticPluginList) executed 270 times by 244 tests: end of blockExecuted by:
executed 270 times by 244 tests: guard.store(QtGlobalStatic::Destroyed);Executed by:
executed 42699 times by 147 tests: return &holder.value;Executed by:
| 0-42699 | ||||||||||||
| 424 | - | |||||||||||||
| 425 | /*! | - | ||||||||||||
| 426 | \relates QPluginLoader | - | ||||||||||||
| 427 | \since 5.0 | - | ||||||||||||
| 428 | - | |||||||||||||
| 429 | Registers the \a plugin specified with the plugin loader, and is used | - | ||||||||||||
| 430 | by Q_IMPORT_PLUGIN(). | - | ||||||||||||
| 431 | */ | - | ||||||||||||
| 432 | void Q_CORE_EXPORT qRegisterStaticPluginFunction(QStaticPlugin plugin) | - | ||||||||||||
| 433 | { | - | ||||||||||||
| 434 | staticPluginList()->append(plugin); | - | ||||||||||||
| 435 | } executed 1 time by 1 test: end of blockExecuted by:
| 1 | ||||||||||||
| 436 | - | |||||||||||||
| 437 | /*! | - | ||||||||||||
| 438 | Returns a list of static plugin instances (root components) held | - | ||||||||||||
| 439 | by the plugin loader. | - | ||||||||||||
| 440 | \sa staticPlugins() | - | ||||||||||||
| 441 | */ | - | ||||||||||||
| 442 | QObjectList QPluginLoader::staticInstances() | - | ||||||||||||
| 443 | { | - | ||||||||||||
| 444 | QObjectList instances; | - | ||||||||||||
| 445 | const StaticPluginList *plugins = staticPluginList(); | - | ||||||||||||
| 446 | if (plugins) {
| 0 | ||||||||||||
| 447 | const int numPlugins = plugins->size(); | - | ||||||||||||
| 448 | instances.reserve(numPlugins); | - | ||||||||||||
| 449 | for (int i = 0; i < numPlugins; ++i)
| 0 | ||||||||||||
| 450 | instances += plugins->at(i).instance(); never executed: instances += plugins->at(i).instance(); | 0 | ||||||||||||
| 451 | } never executed: end of block | 0 | ||||||||||||
| 452 | return instances; never executed: return instances; | 0 | ||||||||||||
| 453 | } | - | ||||||||||||
| 454 | - | |||||||||||||
| 455 | /*! | - | ||||||||||||
| 456 | Returns a list of QStaticPlugins held by the plugin | - | ||||||||||||
| 457 | loader. The function is similar to \l staticInstances() | - | ||||||||||||
| 458 | with the addition that a QStaticPlugin also contains | - | ||||||||||||
| 459 | meta data information. | - | ||||||||||||
| 460 | \sa staticInstances() | - | ||||||||||||
| 461 | */ | - | ||||||||||||
| 462 | QVector<QStaticPlugin> QPluginLoader::staticPlugins() | - | ||||||||||||
| 463 | { | - | ||||||||||||
| 464 | StaticPluginList *plugins = staticPluginList(); | - | ||||||||||||
| 465 | if (plugins)
| 0-42698 | ||||||||||||
| 466 | return *plugins; executed 42698 times by 147 tests: return *plugins;Executed by:
| 42698 | ||||||||||||
| 467 | return QVector<QStaticPlugin>(); never executed: return QVector<QStaticPlugin>(); | 0 | ||||||||||||
| 468 | } | - | ||||||||||||
| 469 | - | |||||||||||||
| 470 | /*! | - | ||||||||||||
| 471 | Returns a the meta data for the plugin as a QJsonObject. | - | ||||||||||||
| 472 | - | |||||||||||||
| 473 | \sa rawMetaData() | - | ||||||||||||
| 474 | */ | - | ||||||||||||
| 475 | QJsonObject QStaticPlugin::metaData() const | - | ||||||||||||
| 476 | { | - | ||||||||||||
| 477 | return qJsonFromRawLibraryMetaData(rawMetaData()).object(); executed 26 times by 1 test: return qJsonFromRawLibraryMetaData(rawMetaData()).object();Executed by:
| 26 | ||||||||||||
| 478 | } | - | ||||||||||||
| 479 | - | |||||||||||||
| 480 | QT_END_NAMESPACE | - | ||||||||||||
| 481 | - | |||||||||||||
| Source code | Switch to Preprocessed file |