The A/D bits exist entirely for the operating system's benefit. The Accessed bit tells the OS which pages have been recently used, enabling page replacement algorithms to choose pages to evict when memory runs low. The Dirty bit tells the OS which pages have been modified and must be written back to disk before eviction; clean pages can simply be discarded and re-read from disk later.
Examples: The samples directory has working code for common patterns，详情可参考同城约会
Ранее президент Украины Владимир Зеленский в интервью Sky News заявил, что с удовольствием принял бы ядерное оружие от Франции или Британии, но «таких предложений не поступало».。雷电模拟器官方版本下载对此有专业解读
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