Unverified50% confidenceFactExact time
RCU写者遵循读取-复制-更新三步范式，调用synchronize_rcu()等待所有已进入读临界区的线程退出，这段等待时间称为宽限期（Grace Period）
1
Sources
50%
Confidence
Long-term
Relevance
7/9/2026
First Seen
Sources
C++ Asymmetric Memory Barriers: Principles, Implementation, and Engineering Applications
hackernewshackernews7/3/2026
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