class _RLock(object):
def __init__(self):
self._lock = ReentrantLock()
self.__owner = None
def acquire(self, blocking=1):
if blocking:
self._lock.lock()
self.__owner = currentThread()
return True
else:
return self._lock.tryLock()
def __enter__(self):
self.acquire()
return self
def release(self):
assert self._lock.isHeldByCurrentThread(), \
"release() of un-acquire()d lock"
self.__owner = None
self._lock.unlock()
def __exit__(self, t, v, tb):
self.release()
def locked(self):
return self._lock.isLocked()
def _is_owned(self):
return self._lock.isHeldByCurrentThread()
