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#!/usr/bin/env python3
# UPEM / System programming / Project: Memory paging simulator
# Pacien TRAN-GIRARD, Adam NAILI
class Memory:
def __init__(self, main_size, virt_size):
self.main = [None] * main_size
self.virt = [None] * virt_size
self._virt_cursor = 0
def _mem_to_string(self, mem):
return ''.join(['%d' % n if n is not None else 'x' for n in mem])
def dump_main(self):
return self._mem_to_string(self.main)
def dump_virt(self):
return self._mem_to_string(self.virt)
def page_in_range(self, page):
return 0 <= page < len(self.main + self.virt)
def put_virt(self, page):
self.virt[self._virt_cursor] = page
self._virt_cursor += 1
def remove_virt(self, page):
for i in range(len(self.virt)):
if self.virt[i] == page:
self._virt_cursor -= 1
self.virt[i] = self.virt[self._virt_cursor]
self.virt[self._virt_cursor] = None
break
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