scheduling-xv6-lottery

Get process states from test output

$ ./test-scheduler.sh
$ %run plot.py

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• here usys.S,syscall.h,syscall.c are to define syscalls. and user.h,defs.h is similar to declare self-defined functions. sysproc.c is to define functions. proc.h,proc.c are to define the scheduler. Makefile needs add ps.c.