monkeypatching - Pyudev 的 ObserverMonitor 在猴子修补时锁定 GIL

Question

每当我使用 eventlet 的猴子补丁（Flask-SocketIO 所必需的）时，disk_monitor_thread() 都会阻止其他线程触发。Eventlet 和猴子补丁对我来说是必须的。有没有办法让 pyudev 的 MonitorObserver 放置好并通过猴子补丁发布 GIL？

from threading import Thread
from pyudev import Context, Monitor, MonitorObserver

import eventlet
eventlet.monkey_patch()

def useless_thread():
    while True:
        print 'sleep thread 1'
        time.sleep(2)

# Monitor UDEV for drive insertion / removal
def disk_monitor_thread():
    context = Context()
    monitor = Monitor.from_netlink(context)
    monitor.filter_by('block')
    def print_device_event(action, device):
        if 'ID_FS_TYPE' in device and device.get('ID_FS_UUID') == '123-UUIDEXAMPLE':
            print('{0}, {1}'.format(device.action, device.get('ID_FS_UUID')))
    print 'Starting Disk Monitor...'
    observer = MonitorObserver(monitor, print_device_event, name='monitor-observer')
    print 'Disk Monitor Started'
    observer.start()

t1 = Thread(name='uselessthread', target=useless_thread)
t1.start()
disk_monitor_thread()

结果是：

sleep thread 1
Starting Disk Monitor...

并且永远不会从那里前进