If there is no current element corresponding to the current thread, then this method constructs a new element. A new element is copy-constructed if an exemplar was provided to the constructor for *this, otherwise a new element is default constructed. See Caution below.
Returns: A reference to the element of *this that corresponds to the current thread.
|reference local( bool& exists )||
Similar to local(), except that exists is set to true if an element was already present for the current thread; false otherwise. See Caution below.
Returns: Reference to thread-local element.
|size_type size() const||
Returns: The number of elements in *this. The value is equal to the number of distinct threads that have called local() after *this was constructed or most recently cleared. See Caution below.
|bool empty() const||
The OS-specific value returned by tbb::this_tbb_thread::get_id() is used to identify threads, and is not guaranteed to be unique except for the life of the thread. A newly created thread may get an OS-specific ID equal to that of an already destroyed thread. The number of elements of the enumerable_thread_specific may therefore be less than the number of actual distinct threads that have called local(), and the element returned by the first reference by a thread to the enumerable_thread_specific may not be newly-constructed.