Unverified50% confidenceFactExact time
Arena 分配（bump allocation）的工作原理是预先分配一大块连续内存，每次分配只需将指针向前移动相应字节数，时间复杂度为 O(1)
1
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50%
Confidence
Long-term
Relevance
8/25/2026
First Seen
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