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#!/usr/bin/env python3
# UPEM / System programming / Project: Memory paging simulator
# Pacien TRAN-GIRARD, Adam NAILI
from mem import Memory
from pageexception import *
from fifo import FifoPaginator
from lru import LruPaginator
from secondchance import SecondChancePaginator
from randomp import RandomPaginator
paginators = {
'fifo': FifoPaginator,
'lru': LruPaginator,
'secondchance': SecondChancePaginator,
'random': RandomPaginator
}
def output(cmd, msg):
print('> \033[1A' + cmd + '\t' + msg)
def main(main_size, virt_size, paginator):
mem = Memory(main_size, virt_size)
pag = paginator(mem)
while True:
cmd = input('> ')
if cmd.isnumeric():
try:
pag.load(int(cmd))
output(cmd, mem.dump_main())
except PageException:
output(cmd, "Error: invalid page.")
elif cmd == 'p':
output(cmd, mem.dump_main() + '\t' + mem.dump_virt())
elif cmd == 'x':
break
else:
output(cmd, 'Error: invalid command.')
if __name__ == '__main__':
from argparse import ArgumentParser
argparser = ArgumentParser()
argparser.add_argument('-s', '--mem_size', type = int, required = True)
argparser.add_argument('-v', '--virtual_size', type = int, required = True)
argparser.add_argument('-a', '--algorithm', required = True, choices = paginators.keys())
args = argparser.parse_args()
assert args.mem_size < args.virtual_size
main(args.mem_size, args.virtual_size, paginators[args.algorithm])
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