QThreadStorage<QCache<QString, SomeClass> > caches;

void cacheObject(const QString &key, SomeClass *object)
{
    caches.localData().insert(key, object);
}

void removeFromCache(const QString &key)
{
    if (!caches.hasLocalData())
        return;

    caches.localData().remove(key);
}

Member Function Documentation

QThreadStorage::QThreadStorage()

Constructs a new per-thread data storage object.

QThreadStorage::~QThreadStorage()

Destroys the per-thread data storage object.

Note: The per-thread data stored is not deleted. Any data left in QThreadStorage is leaked. Make sure that all threads using QThreadStorage have exited before deleting the QThreadStorage.

See also hasLocalData().

bool QThreadStorage::hasLocalData() const

If T is a pointer type, returns true if the calling thread has non-zero data available.

If T is a value type, returns whether the data has already been constructed by calling setLocalData or localData.

See also localData().

T &QThreadStorage::localData()

Returns a reference to the data that was set by the calling thread.

If no data has been set, this will create a default constructed instance of type T.

See also setLocalData() and hasLocalData().

T QThreadStorage::localData() const

This is an overloaded function.

Returns a copy of the data that was set by the calling thread.

See also hasLocalData().

void QThreadStorage::setLocalData(T data)

Sets the local data for the calling thread to data. It can be accessed later using the localData() functions.

If T is a pointer type, QThreadStorage takes ownership of the data and deletes it automatically either when the thread exits (either normally or via termination) or when setLocalData() is called again.

See also localData() and hasLocalData().