Refactored lamexp_temp_folder2() function. This also fixes a potential deadlock at application when %TMP% points to an invalid folder. Now using separate locks for lamexp_temp_folder2() and lamexp_known_folder().
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@ -21,6 +21,7 @@ a:visited { color: #0000EE; }
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<li>Updated Qt runtime libraries to v4.8.5 (2013-05-31), compiled with MSVC 11.0
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<li>Updated FLAC encoder/decoder to v1.3.0 (2013-05-27), compiled with ICL 13.0
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<li>Updated Opus encoder/decoder libraries to v1.1.x and Opus-Tools to v0.1.6 (2013-06-17)
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<li>Fixed a potential deadlock during startup when %TMP% points to an invalid folder
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<li>Fixed a superfluous "beep" sound that appeared on application startup
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</ul><br>
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@ -34,7 +34,7 @@
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#define VER_LAMEXP_MINOR_LO 8
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#define VER_LAMEXP_TYPE Alpha
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#define VER_LAMEXP_PATCH 3
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#define VER_LAMEXP_BUILD 1298
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#define VER_LAMEXP_BUILD 1301
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#define VER_LAMEXP_CONFG 1288
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///////////////////////////////////////////////////////////////////////////////
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@ -144,12 +144,14 @@ void SplashScreen::showSplash(QThread *thread)
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//Loop while thread is still running
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if(bool bIsRunning = THREAD_RUNNING(thread))
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{
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int deadlockCounter = 0;
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while(bIsRunning)
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{
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loop->exec();
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if(bIsRunning = THREAD_RUNNING(thread))
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{
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qWarning("Potential deadlock in initialization thread!");
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if(++deadlockCounter >= 10) qFatal("Deadlock in initialization thread!");
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}
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}
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}
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197
src/Global.cpp
197
src/Global.cpp
@ -228,11 +228,18 @@ static const unsigned int g_lamexp_toolver_coreaudio = VER_LAMEXP_TOOL_COREAUDIO
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//Special folders
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static struct
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{
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QString *temp;
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QMap<size_t, QString> *knownFolders;
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QReadWriteLock lock;
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}
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g_lamexp_folder;
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g_lamexp_known_folder;
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//%TEMP% folder
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static struct
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{
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QString *path;
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QReadWriteLock lock;
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}
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g_lamexp_temp_folder;
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//Tools
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static struct
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@ -1487,102 +1494,103 @@ QString lamexp_rand_str(void)
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throw "The RegExp didn't match on the UUID string. This shouldn't happen ;-)";
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}
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/*
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* Try to initialize the folder (with *write* access)
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*/
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static QString lamexp_try_init_folder(const QString &folderPath)
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{
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bool success = false;
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const QFileInfo folderInfo(folderPath);
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const QDir folderDir(folderInfo.absoluteFilePath());
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//Create folder, if it does *not* exist yet
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if(!folderDir.exists())
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{
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folderDir.mkpath(".");
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}
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//Make sure folder exists now *and* is writable
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if(folderDir.exists())
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{
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QFile testFile(folderDir.absoluteFilePath(QString("~%1.tmp").arg(lamexp_rand_str())));
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if(testFile.open(QIODevice::ReadWrite))
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{
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const QByteArray testData = QByteArray("Lorem ipsum dolor sit amet, consectetur, adipisci velit!");
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if(testFile.write(testData) >= strlen(testData))
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{
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success = true;
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testFile.remove();
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}
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testFile.close();
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}
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}
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return (success ? folderDir.canonicalPath() : QString());
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}
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/*
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* Get LameXP temp folder
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*/
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const QString &lamexp_temp_folder2(void)
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{
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QReadLocker readLock(&g_lamexp_folder.lock);
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QReadLocker readLock(&g_lamexp_temp_folder.lock);
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//Already initialized?
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if(g_lamexp_folder.temp)
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if(g_lamexp_temp_folder.path && (!g_lamexp_temp_folder.path->isEmpty()))
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{
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if(!g_lamexp_folder.temp->isEmpty())
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if(QDir(*g_lamexp_temp_folder.path).exists())
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{
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if(QDir(*g_lamexp_folder.temp).exists())
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{
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return *g_lamexp_folder.temp;
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}
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return *g_lamexp_temp_folder.path;
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}
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}
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//Obtain the write lock to initilaize
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readLock.unlock();
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QWriteLocker writeLock(&g_lamexp_folder.lock);
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QWriteLocker writeLock(&g_lamexp_temp_folder.lock);
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if(!g_lamexp_folder.temp)
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//Still uninitilaized?
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if(g_lamexp_temp_folder.path && (!g_lamexp_temp_folder.path->isEmpty()))
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{
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g_lamexp_folder.temp = new QString();
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if(QDir(*g_lamexp_temp_folder.path).exists())
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{
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return *g_lamexp_temp_folder.path;
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}
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}
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//Create the string, if not done yet
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if(!g_lamexp_temp_folder.path)
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{
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g_lamexp_temp_folder.path = new QString();
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}
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g_lamexp_folder.temp->clear();
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static const char *TEMP_STR = "Temp";
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const QString WRITE_TEST_DATA = lamexp_rand_str();
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const QString SUB_FOLDER = lamexp_rand_str();
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g_lamexp_temp_folder.path->clear();
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//Try the %TMP% or %TEMP% directory first
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QDir temp = QDir::temp();
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if(temp.exists())
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QString tempPath = lamexp_try_init_folder(QDir::temp().absolutePath());
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if(!tempPath.isEmpty())
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{
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temp.mkdir(SUB_FOLDER);
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if(temp.cd(SUB_FOLDER) && temp.exists())
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(*g_lamexp_temp_folder.path) = lamexp_try_init_folder(QString("%1/%2").arg(tempPath, lamexp_rand_str()));
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}
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//Otherwise create TEMP folder in %LOCALAPPDATA%
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if(g_lamexp_temp_folder.path->isEmpty())
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{
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tempPath = lamexp_try_init_folder(QString("%1/Temp").arg(lamexp_known_folder(lamexp_folder_localappdata)));
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if(!tempPath.isEmpty())
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{
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QFile testFile(QString("%1/~%2.tmp").arg(temp.canonicalPath(), lamexp_rand_str()));
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if(testFile.open(QIODevice::ReadWrite))
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{
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if(testFile.write(WRITE_TEST_DATA.toLatin1().constData()) >= strlen(WRITE_TEST_DATA.toLatin1().constData()))
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{
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(*g_lamexp_folder.temp) = temp.canonicalPath();
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}
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testFile.remove();
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}
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}
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if(!g_lamexp_folder.temp->isEmpty())
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{
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return *g_lamexp_folder.temp;
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(*g_lamexp_temp_folder.path) = lamexp_try_init_folder(QString("%1/%2").arg(tempPath, lamexp_rand_str()));
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}
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}
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//Create TEMP folder in %LOCALAPPDATA%
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QDir localAppData = QDir(lamexp_known_folder(lamexp_folder_localappdata));
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if(!localAppData.path().isEmpty())
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//Failed to create TEMP folder?
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if(g_lamexp_temp_folder.path->isEmpty())
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{
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if(!localAppData.exists())
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{
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localAppData.mkpath(".");
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}
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if(localAppData.exists())
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{
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if(!localAppData.entryList(QDir::AllDirs).contains(TEMP_STR, Qt::CaseInsensitive))
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{
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localAppData.mkdir(TEMP_STR);
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}
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if(localAppData.cd(TEMP_STR) && localAppData.exists())
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{
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localAppData.mkdir(SUB_FOLDER);
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if(localAppData.cd(SUB_FOLDER) && localAppData.exists())
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{
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QFile testFile(QString("%1/~%2.tmp").arg(localAppData.canonicalPath(), lamexp_rand_str()));
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if(testFile.open(QIODevice::ReadWrite))
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{
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if(testFile.write(WRITE_TEST_DATA.toLatin1().constData()) >= strlen(WRITE_TEST_DATA.toLatin1().constData()))
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{
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(*g_lamexp_folder.temp) = localAppData.canonicalPath();
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}
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testFile.remove();
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}
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}
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}
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}
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if(!g_lamexp_folder.temp->isEmpty())
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{
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return *g_lamexp_folder.temp;
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}
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qFatal("Temporary directory could not be initialized !!!");
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}
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//Failed to create TEMP folder!
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qFatal("Temporary directory could not be initialized!\n\nFirst attempt:\n%s\n\nSecond attempt:\n%s", temp.canonicalPath().toUtf8().constData(), localAppData.canonicalPath().toUtf8().constData());
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return *g_lamexp_folder.temp;
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return *g_lamexp_temp_folder.path;
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}
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/*
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@ -1908,7 +1916,7 @@ const QString &lamexp_known_folder(lamexp_known_folder_t folder_id)
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static const GUID GUID_PROGRAM_FILES = {0x905e63b6,0xc1bf,0x494e,{0xb2,0x9c,0x65,0xb7,0x32,0xd3,0xd2,0x1a}};
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static const GUID GUID_SYSTEM_FOLDER = {0x1AC14E77,0x02E7,0x4E5D,{0xB7,0x44,0x2E,0xB1,0xAE,0x51,0x98,0xB7}};
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QReadLocker readLock(&g_lamexp_folder.lock);
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QReadLocker readLock(&g_lamexp_known_folder.lock);
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int folderCSIDL = -1;
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GUID folderGUID = {0x0000,0x0000,0x0000,{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}};
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@ -1938,20 +1946,31 @@ const QString &lamexp_known_folder(lamexp_known_folder_t folder_id)
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}
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//Already in cache?
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if(g_lamexp_folder.knownFolders)
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if(g_lamexp_known_folder.knownFolders)
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{
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if(g_lamexp_folder.knownFolders->contains(folderCacheId))
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if(g_lamexp_known_folder.knownFolders->contains(folderCacheId))
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{
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return (*g_lamexp_folder.knownFolders)[folderCacheId];
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return (*g_lamexp_known_folder.knownFolders)[folderCacheId];
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}
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}
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//Obtain write lock to initialize
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readLock.unlock();
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QWriteLocker writeLock(&g_lamexp_folder.lock);
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QWriteLocker writeLock(&g_lamexp_known_folder.lock);
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//Still not in cache?
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if(g_lamexp_known_folder.knownFolders)
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{
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if(g_lamexp_known_folder.knownFolders->contains(folderCacheId))
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{
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return (*g_lamexp_known_folder.knownFolders)[folderCacheId];
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}
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}
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static SHGetKnownFolderPathFun SHGetKnownFolderPathPtr = NULL;
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static SHGetFolderPathFun SHGetFolderPathPtr = NULL;
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//Lookup functions
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if((!SHGetKnownFolderPathPtr) && (!SHGetFolderPathPtr))
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{
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QLibrary kernel32Lib("shell32.dll");
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@ -1964,6 +1983,7 @@ const QString &lamexp_known_folder(lamexp_known_folder_t folder_id)
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QString folder;
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//Now try to get the folder path!
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if(SHGetKnownFolderPathPtr)
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{
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WCHAR *path = NULL;
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@ -2002,14 +2022,14 @@ const QString &lamexp_known_folder(lamexp_known_folder_t folder_id)
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}
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//Create cache
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if(!g_lamexp_folder.knownFolders)
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if(!g_lamexp_known_folder.knownFolders)
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{
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g_lamexp_folder.knownFolders = new QMap<size_t, QString>();
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g_lamexp_known_folder.knownFolders = new QMap<size_t, QString>();
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}
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//Update cache
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g_lamexp_folder.knownFolders->insert(folderCacheId, folder);
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return (*g_lamexp_folder.knownFolders)[folderCacheId];
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g_lamexp_known_folder.knownFolders->insert(folderCacheId, folder);
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return (*g_lamexp_known_folder.knownFolders)[folderCacheId];
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}
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/*
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@ -2434,7 +2454,8 @@ extern "C"
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LAMEXP_ZERO_MEMORY(g_lamexp_tools);
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LAMEXP_ZERO_MEMORY(g_lamexp_currentTranslator);
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LAMEXP_ZERO_MEMORY(g_lamexp_translation);
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LAMEXP_ZERO_MEMORY(g_lamexp_folder);
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LAMEXP_ZERO_MEMORY(g_lamexp_known_folder);
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LAMEXP_ZERO_MEMORY(g_lamexp_temp_folder);
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LAMEXP_ZERO_MEMORY(g_lamexp_ipc_ptr);
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LAMEXP_ZERO_MEMORY(g_lamexp_os_version);
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LAMEXP_ZERO_MEMORY(g_lamexp_themes_enabled);
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@ -2501,24 +2522,24 @@ void lamexp_finalization(void)
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}
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//Delete temporary files
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if(g_lamexp_folder.temp)
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if(g_lamexp_temp_folder.path)
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{
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if(!g_lamexp_folder.temp->isEmpty())
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if(!g_lamexp_temp_folder.path->isEmpty())
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{
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for(int i = 0; i < 100; i++)
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{
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if(lamexp_clean_folder(*g_lamexp_folder.temp))
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if(lamexp_clean_folder(*g_lamexp_temp_folder.path))
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{
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break;
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}
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Sleep(125);
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}
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}
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LAMEXP_DELETE(g_lamexp_folder.temp);
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LAMEXP_DELETE(g_lamexp_temp_folder.path);
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}
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//Clear folder cache
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LAMEXP_DELETE(g_lamexp_folder.knownFolders);
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LAMEXP_DELETE(g_lamexp_known_folder.knownFolders);
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//Clear languages
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if(g_lamexp_currentTranslator.instance)
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@ -297,6 +297,10 @@ void InitializationThread::run()
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qWarning("Extracting tools took %.3f seconds -> probably slow realtime virus scanner.", delayExtract);
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qWarning("Please report performance problems to your anti-virus developer !!!\n");
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}
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else
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{
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qDebug("Extracting the tools took %.3f seconds (OK).\n", delayExtract);
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}
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//Register all translations
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initTranslations();
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