template <typename T, typename ObjectPoolPolicyT = DefaultObjectPoolPolicy<T>, uint32_t FramesUntilEviction = 4>class HashCache
Defined at line 80 of file ../../src/ui/lib/escher/util/hash_cache.h
Provides a frame-based cache that evicts items that haven't been used for
|FramesUntilEviction| frames. In other words:
- if FramesUntilEviction == 0, there is no frame-to-frame caching; items are
evicted even if they were used in the previous frame.
- if FramesUntilEviction == 1, items are evicted if they were not used in the
previous frame, otherwise they remain in the cache.
- if FramesUntilEviction == 2, items are evicted if two frames pass without
the resource being used.
- and so on...
Clients are responsible for not using the cached object after it has been
evicted from the cache. The recommended way to do this is to re-request
cached objects every frame (or even more often).
Public Methods
template <typename... Args>void HashCache<T, ObjectPoolPolicyT, FramesUntilEviction> (Args &&... args)Defined at line 83 of file ../../src/ui/lib/escher/util/hash_cache.h
void ~HashCache<T, ObjectPoolPolicyT, FramesUntilEviction> ()Defined at line 84 of file ../../src/ui/lib/escher/util/hash_cache.h
void Clear ()Defined at line 86 of file ../../src/ui/lib/escher/util/hash_cache.h
void BeginFrame ()Defined at line 98 of file ../../src/ui/lib/escher/util/hash_cache.h
std::pair<T *, bool> Obtain (Hash hash)Defined at line 103 of file ../../src/ui/lib/escher/util/hash_cache.h
size_t cache_hits ()Defined at line 135 of file ../../src/ui/lib/escher/util/hash_cache.h
size_t cache_misses ()Defined at line 136 of file ../../src/ui/lib/escher/util/hash_cache.h
size_t size ()Defined at line 137 of file ../../src/ui/lib/escher/util/hash_cache.h
const ObjectPoolType & object_pool ()Defined at line 141 of file ../../src/ui/lib/escher/util/hash_cache.h