KisLazySharedCacheStorage.h File Reference

#include <type_traits>
#include <functional>
#include <utility>
#include <QMutex>
#include <QAtomicPointer>
#include <QSharedPointer>
#include <QSharedDataPointer>
#include <QExplicitlySharedDataPointer>

Go to the source code of this file.

Classes
struct	KisLazySharedCacheStorageDetail::DataStorage< StorageType, T, Args >
struct	KisLazySharedCacheStorageDetail::DataWrapperShared< T, Args >
class	KisLazySharedCacheStorageBase< DataWrapper, T, Args >
struct	KisLazySharedCacheStorageDetail::DataWrapperShared< T, Args >::SharedStorage

Namespaces
namespace	KisLazySharedCacheStorageDetail

Typedefs
template<typename T , typename... Args>
using	KisLazySharedCacheStorageDetail::DataWrapperLocal = DataStorage<QSharedPointer<T>, T, Args...>
template<typename T , typename... Args>
using	KisLazySharedCacheStorage
template<typename T , typename... Args>
using	KisLazySharedCacheStorageLinked

Typedef Documentation

KisLazySharedCacheStorage

template<typename T , typename... Args>

using KisLazySharedCacheStorage

Initial value:

 
    KisLazySharedCacheStorageBase<
        KisLazySharedCacheStorageDetail::DataWrapperLocal<T, Args...>, T, Args...>

KisLazySharedCacheStorage is a special class that allows two classes lazily share an existing cache data. That is, after the class has been cloned via a copy constructor it keeps a pointer to the cached data of the source object. This link is kept until one of the objects calls cache.reset(), then the cached data is detached.

Take it into account that KisLazySharedCacheStorage will keep a link only in case the cache existed at the moment of cloning. That is the main difference to KisLazySharedCacheStorageLinked.

The class guarantees full tread-safety of the access and detach of the cache object.

Definition at line 189 of file KisLazySharedCacheStorage.h.

KisLazySharedCacheStorageLinked

template<typename T , typename... Args>

using KisLazySharedCacheStorageLinked

Initial value:

 
    KisLazySharedCacheStorageBase<
        KisLazySharedCacheStorageDetail::DataWrapperShared<T, Args...>, T, Args...>

KisLazySharedCacheStorageLinked is a special class that allows two classes lazily share a cache object. The two classes will not only share cache data, but also the cache object itself. That is, when one of the objects updates the cache data, this data will also be uploaded into the cache of the other object. The link between the two objects is kept until one of the objects calls cache.reset().

The class guarantees full tread-safety of the access and detach of the cache object.

Definition at line 205 of file KisLazySharedCacheStorage.h.