o V ht @sddlmZddlZddlZddlmZddlmZddlmZddlm Z er4ddlm Z ddlm Z ed Z ed e d ZGd d d eje ZdddZdS)) annotationsN) TYPE_CHECKING)TypeVar)overload)WeakKeyDictionary)Any)CallableTC)boundcsReZdZdfdd Ze ddd d Zedddd Z ddfdd ZZS)AtomicCachedPropertyfuncCallable[[C], T]returnNonecs"t|t|_t|_dSN)super__init__ threadingBoundedSemaphore _semaphorer_locks)selfr  __class__j/var/www/html/construction_image-detection-poc/venv/lib/python3.10/site-packages/poetry/utils/threading.pyrs   zAtomicCachedProperty.__init__.instanceownertype[Any] | NoneAtomicCachedProperty[T]cCdSrrrrrrrr__get__szAtomicCachedProperty.__get__objectr cCr!rrr"rrrr#sNC | NoneAtomicCachedProperty[T] | Tcs|dur|S||jvr*|j||jvrt|j|<Wdn1s%wY|j|t||WdS1sAwYdSr)rrrLockrr#r"rrrr#"s    $)r rrr).)rrrrrr )rr$rrrr r)rr%rrrr&)__name__ __module__ __qualname__rrr# __classcell__rrrrr sr r rrr cCst|S)a A thread-safe implementation of functools.cached_property that ensures lazily-computed properties are calculated only once, even in multithreaded environments. This property decorator works similar to functools.cached_property but employs thread locks and a bounded semaphore to handle concurrent access safely. The computed value is cached on the instance itself and is reused for subsequent accesses unless explicitly invalidated. The added thread-safety makes it ideal for situations where multiple threads might access and compute the property simultaneously. Note: - The cache is stored in the instance dictionary just like `functools.cached_property`. :param func: The function to be turned into a thread-safe cached property. )r )r rrratomic_cached_property4sr,)r rrr ) __future__r functoolsrtypingrrrweakrefrrrr r$r cached_propertyr r,rrrrs