labutilsleep介绍:主要用来熟悉下环境以及代码结构。Seekernel/sysproc.cforthexv6kernelcodethatimplementsthesleepsystemcall(lookforsys_sleep),user/user.hfortheCdefinitionofsleepcallablefromauserprogram,anduser/usys.Sfortheassemblercodethatjumpsfromusercodeintothekernelforsleep.代码:#include"kernel/types.h"#include"user/use