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Rintaro Ishizaki
a6c926fa34
For ID counters and standalone flags (most sites), drop to .relaxed since nothing reads other memory based on the atomic's value. MultiEntrySemaphore.signaled is the exception: it is used as a signal/wait primitive where waiters proceed to use state set up before signal(). Use .releasing on store and .acquiring on load so that pre-signal writes are visible to waiters that observe `true`. .relaxed there would be incorrect on weakly-ordered architectures.