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      std::unique_lock<Mutex>::owns_lock

      From cppreference.com
      <cpp‎ |thread‎ |unique lock
       
       
      Concurrency support library
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      this_thread namespace
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      bool owns_lock()constnoexcept;
      		(since C++11)

      Checks whether*this owns a locked mutex or not.

      [edit]Parameters

      (none)

      [edit]Return value

      true if*this has an associated mutex and has acquired ownership of it,false otherwise.

      [edit]See also

      tests whether the lock owns (i.e., has locked) its associated mutex
      (public member function)[edit]
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