Search for folder when the directory is not known

[Ylvy]

I'm searching for a specific folder when its directory is unknown, the folder contains a _ in its name, I wonder if its possible to filter the folders.
In the sample below its taking so long to find the folder.

void searchFolderInAllDrives(const QString &folderName)
{
    QElapsedTimer timer;
    timer.start();

    QList<QStorageInfo> drives = QStorageInfo::mountedVolumes();

    QString folderPath;
    for (const QStorageInfo &drive : drives)
    {
        QDirIterator it(drive.rootPath(), QStringList() << folderName, QDir::Dirs | QDir::NoDotAndDotDot, QDirIterator::Subdirectories);

        if (it.hasNext()) 
        {
            folderPath = it.next();
            qDebug() << "Found folder:" << folderPath;
            break;
        }      
    }

    qint64 elapsedTime = timer.elapsed();
    qDebug() << "Time taken to find the folder:" << elapsedTime << "ms";
}




int main(int argc, char *argv[])
{
    searchFolderInAllDrives("folder_name");
    return 0;
}

[JonB]

@Ylvy
What would you expect to be any faster than this? It has to search all directory entries recursively on all mounted volumes. That takes a while :) Linux filing systems don't have a magical call for finding things other than you looking at the filename retrieved, and these days I don't think Windows has a faster native call.

This is also why OSs offer features like Windows "indexing" or Linux locate, so you can look up previously cached answers quickly!