MBThreadsafeCache(ForSubclassEyesOnly) Category Reference

Declared in	MBThreadsafeCache+Subclassing.h

Overview

The class extensions in this header file are intended for internal use only by MBThreadsafeCache implementations.

Code external to MBThreadsafeCache should never call these methods directly.

Acquiring the memory cache

`– internalCache`

Returns the internal NSMutableDictionary where in-memory cached objects are stored.

- (nonnull NSMutableDictionary *)internalCache

Discussion

Note: The cache is locked when this method is called by the MBThreadsafeCache superclass implementation; subclasses that call this method directly or perform mutations on the returned dictionary must only do so when the cache is locked.

Declared In

MBThreadsafeCache+Subclassing.h

Accessing cached items

`– internalIsKeyInCache:`

Called internally to determine whether a given key has a corresponding value in the cache.

- (BOOL)internalIsKeyInCache:(nonnull id)key

Parameters

`key`	The key.

Return Value

YES if there is a value for the given key in the cache; NO otherwise.

Discussion

Note: The cache is locked when this method is called by the MBThreadsafeCache superclass implementation; subclasses that call this method directly must only do so when the cache is locked.

Declared In

MBThreadsafeCache+Subclassing.h

`– internalObjectForKey:`

Called internally to retrieve a cached object value given its key.

- (nullable id)internalObjectForKey:(nonnull id)key

Parameters

`key`	The key whose associated value is to be retrieved.

Return Value

The value associated with key. May be nil.

Discussion

Note: The cache is locked when this method is called by the MBThreadsafeCache superclass implementation; subclasses that call this method directly must only do so when the cache is locked.

Declared In

MBThreadsafeCache+Subclassing.h

Modifying the cache

`– internalSetObject:forKey:`

Called internally to set a cached object value and associates it with the given key.

- (void)internalSetObject:(nonnull id)obj forKey:(nonnull id)key

Parameters

`obj`	The new cached value.
`key`	The key whose associated value is to be set.

Discussion

Note: The cache is locked when this method is called by the MBThreadsafeCache superclass implementation; subclasses that call this method directly must only do so when the cache is locked.

Declared In

MBThreadsafeCache+Subclassing.h

`– internalRemoveObjectForKey:`

Called internally to remove from the cache the object associated with the given key.

- (void)internalRemoveObjectForKey:(nonnull id)key

Parameters

`key`	The key whose associated value is to be removed.

Discussion

Note: The cache is locked when this method is called by the MBThreadsafeCache superclass implementation; subclasses that call this method directly must only do so when the cache is locked.

Declared In

MBThreadsafeCache+Subclassing.h

`– internalClearMemoryCache`

Called internally to empty the in-memory object cache.

- (void)internalClearMemoryCache

Discussion

Depending on how the cache instance was initialized, this method may be called automatically in response to memory warnings.

Note: The cache is locked when this method is called by the MBThreadsafeCache superclass implementation; subclasses that call this method directly must only do so when the cache is locked.

Declared In

MBThreadsafeCache+Subclassing.h