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std::once_flag

From cppreference.com
< cpp‎ | thread
 
C++
 
Concurrency support library
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this_thread namespace
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Cooperative cancellation
Mutual exclusion
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Generic lock management
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once_flag
(C++11)
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(C++11)(C++11)(C++11)(C++11)(C++11)(C++11)
Condition variables
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Semaphores
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Latches and Barriers
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Futures
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Safe reclamation
(C++26)
(C++26)
(C++26)
Hazard pointers
(C++26)
(C++26)
(C++26)