# If the logging module is imported *before* monkey patching,
# the existing handlers are correctly monkey patched to use gevent locks
import logging
logging.basicConfig()

import threading
import sys
PY2 = sys.version_info[0] == 2


def _inner_lock(lock):
    # The inner attribute changed between 2 and 3
    attr = getattr(lock, '_block' if not PY2 else '_RLock__block', None)
    return attr

def _check_type(root, lock, inner_semaphore, kind):
    if not isinstance(inner_semaphore, kind):
        raise AssertionError(
            "Expected <object>.[_]lock._block to be of type %s, "
            "but it was of type %s.\n"
            "\t<object>.[_]lock=%r\n"
            "\t<object>.[_]lock._block=%r\n"
            "\t<object>=%r" % (
                kind,
                type(inner_semaphore),
                lock,
                inner_semaphore,
                root
            )
        )

def checkLocks(kind, ignore_none=True):
    handlers = logging._handlerList
    assert handlers

    for weakref in handlers:
        # In py26, these are actual handlers, not weakrefs
        handler = weakref() if callable(weakref) else weakref
        block = _inner_lock(handler.lock)
        if block is None and ignore_none:
            continue
        _check_type(handler, handler.lock, block, kind)

    attr = _inner_lock(logging._lock)
    if attr is None and ignore_none:
        return
    _check_type(logging, logging._lock, attr, kind)

checkLocks(type(threading._allocate_lock()))

import gevent.monkey
gevent.monkey.patch_all()

import gevent.lock

checkLocks(type(gevent.thread.allocate_lock()), ignore_none=False)