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Why I built this: I was dealing with a really annoying bug in my M:N scheduler. Under heavy load, throughput would just flatline to zero. I ran ASAN and TSAN, but they came up empty because no memory was actually corrupted. It turned out to be a "lost wakeup"—coroutines were stuck forever waiting on a closed file descriptor. Traditional tools just can't catch these logical state machine breaks. I wrote coroTracer to track this exact issue down, and it worked.
any other method [2].
最新精确计算结果是137.035999206(11)，准确度达到万亿分之81，相当于测量地球到月球的距离误差不到一根头发丝，因此成为人类历史上测量最精确的物理学常数之一。