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c| ocks and timers(时钟和记时器) Provide current time, elapsed time timer (提供当前的时间,经过的时间,计时器) if programmable interval time used for timings, periodic interrupts(如果把可编程的时间间隔用于计时,那么定期中断) ioctl(on UNIX) covers odd aspects of l/o such as clocks and timers (在UNX中,ioct掩盖了O设备(象时钟和计时器)之间区别) Applied Operating System Concepts Silberschatz, Galvin, and Gagne @199912.11 Silberschatz, Galvin, and Gagne ©1999 Applied Operating System Concepts Clocks and Timers(时钟和记时器) • Provide current time, elapsed time, timer (提供当前的时间,经过的时间,计时器) • if programmable interval time used for timings, periodic interrupts(如果把可编程的时间间隔用于计时,那么定期中断) •ioctl (on UNIX) covers odd aspects of I/O such as clocks and timers (在UNIX中,ioct1掩盖了I/O设备(象时钟和计时器)之间区别)
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