def __init__(self, cache_file, dirty=False, *args, **kargs):
if 'workers' not in kargs:
kargs['workers'] = 16
self.done = False
self.gbd = GBD(*args, **kargs)
self.uuid = self.gbd.uuid
self.block_size = self.gbd.block_size
self.block_count = self.gbd.block_count
self.total_size = self.gbd.total_size
self.cache = open(cache_file, 'r+b')
self.cache_lock = Lock()
self.entry_count = self.calc_entry_count()
self.clean_que = RLUQueue(self.entry_count)
self.dirty_que = RLUQueue(self.entry_count)
self.last_modify = [0] * self.entry_count
self.map = {}
self.rmap = [self.EMPTY] * self.entry_count
self.map_lock = Lock()
self.load_cache(dirty)
self.wb_sem = Semaphore(8)
self.wb_daemon = Thread(target=self.do_writeback)
self.wb_daemon.daemon = True
self.wb_daemon.start()
self.pull_que = TimedPriorityQueue()
self.dque_lock = Lock()
self.pull_delay_que = {}
self.pull_daemon = Thread(target=self.do_pull)
self.pull_daemon.daemon = True
self.pull_daemon.start()
self.done = True
