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std::shared_lock<Mutex>:: ~shared_lock

From cppreference.net
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std::shared_lock
~shared_lock ( ) ;
(seit C++14)

Zerstört die Sperre.

Wenn * this einen zugeordneten Mutex hat (( mutex() gibt einen nicht-null Zeiger zurück) und dessen Besitz erworben hat ( owns() gibt true zurück), wird der Mutex durch Aufruf von unlock_shared() entsperrt.