For implementers, the locking model adds a fair amount of non-trivial internal bookkeeping. Every operation must check lock state, readers must be tracked, and the interplay between locks, cancellation, and error states creates a matrix of edge cases that must all be handled correctly.
Author(s): Edward Kim, Jason Hattrick-Simpers，推荐阅读爱思助手下载最新版本获取更多信息
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Силовые структуры
while (i <= j) {，更多细节参见旺商聊官方下载
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