def __init__(self, *, memorysize=10):
self.time = 0 # This state's wall duration
self.clock = 0 # The current wall clock
self.mem = PhysicalMemory(memorysize)
self.pagemngr = PageManager(self.mem)
self.sched = Scheduler()
self.pidcount = 0
self.pid = None
def test_simple_free():
mem = PhysicalMemory(2)
mem.allocate_page = simple_alloc
mem.free_page = simple_free
mem.alloc(1)
mem.free(0)
assert mem.freelist == []
def test_process_run_two_segments():
mem = PhysicalMemory(1)
pm = PageManager(mem)
proc = Process(pm, '../programs/two_fifties.process', 1)
proc.run(100)
assert proc.state == ProcessState.EXIT
assert proc.program_counter == 2
def test_process_run():
mem = PhysicalMemory(1)
pm = PageManager(mem)
proc = Process(pm, '../programs/100work.process', 1)
proc.run(90)
assert proc.unfinished_work == 90
proc.run(10)
assert proc.state == ProcessState.EXIT
class SimulationState:
def __init__(self, *, memorysize=10):
self.time = 0 # This state's wall duration
self.clock = 0 # The current wall clock
self.mem = PhysicalMemory(memorysize)
self.pagemngr = PageManager(self.mem)
self.sched = Scheduler()
self.pidcount = 0
self.pid = None
def serialize(self):
obj = {}
obj['clock'] = self.clock
obj['time'] = self.time
obj['pid'] = self.pid
obj['mem'] = self.mem.serialize()
obj['pagemngr'] = self.pagemngr.serialize()
obj['scheduler'] = self.sched.serialize()
return obj
def test_raises_address_out_of_bounds():
mem = PhysicalMemory(1)
mem.allocate_page = simple_alloc
with pytest.raises(exceptions.AddressInvalid):
for i in range(5):
mem.alloc(i + 1)
def test_simple_alloc():
mem = PhysicalMemory(10)
mem.allocate_page = simple_alloc
for i in range(5):
mem.alloc(i + 1)
assert mem.state == [1, 2, 3, 4, 5, 0, 0, 0, 0, 0]
def test_make_page():
mem = PhysicalMemory(1)
pm = PageManager(mem)
page = pm.make_page(32)
assert pm.mem.get(page.addr) == 32