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写给小白的操作系统入门科普
一般情况下,开机后,用户启动某个应用程序,操作系统内核程序会在合适的时候主动让出 CPU,转为用户态。这时,如果发生了中断,操作系统内核会强行夺回 CPU 控制权,让 CPU 从用户态变成内核态。
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今日热点
Helene death toll rises
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Chief adviser subpoenaed
Malibu coast earthquake
Condemns Israeli strikes
Szarewicz case update
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Earth's orbit new asteroid
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ISR strikes Lebanon again
NY ballot appeal rejected
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Ukrainian drones shot down
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Dow closes at record high
Haney sues Garcia
Van Gogh paintings attacked
121st loss of the season
Houthis attack US warships
AL sued over purging voters
Diocese reaches settlement
UNC digital IDs blocked
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