debug.py 文件源码

def acquire(self, blocking=1):
    while not self.lock.acquire(blocking=0):
      time.sleep(1)
      print >> sys.out, "TRYING"
      traceback.print_stack(None, None, out)
      print >> sys.out, "TRYING"
    print >> sys.out, "ACQUIRED"
    traceback.print_stack(None, None, out)
    print >> sys.out, "ACQUIRED"
    return True