sysvitals/api-py/reloader.py

import os
from os import path
import sys
import thread

def init(server):
	thread.start_new_thread(_reloader, (server,))

def _reloader(server):
	import inotifyx

	fd = inotifyx.init()
	rootdir = path.dirname(path.abspath(__file__))
	for dirpath, _, _ in os.walk(rootdir):
		inotifyx.add_watch(fd, dirpath, inotifyx.IN_CLOSE_WRITE)
	config_path = path.normpath(path.join(rootdir, '..', 'config.py'))
	config_wd = inotifyx.add_watch(fd, config_path, inotifyx.IN_CLOSE_WRITE)

	while True:
		events = inotifyx.get_events(fd)
		for event in events:
			if event.name == '4913': # https://code.google.com/p/vim/source/browse/src/fileio.c?spec=svn94df797ed6b03d5387b5ed7526f8c65024112822&r=29eb4c2a33ac701bfcd4d2e2bed7864eba876e0e#3767
				continue
			elif event.name is None and event.wd == config_wd:
				print 'config.py changed, reloading...'
				do_reload(fd, server)
				return
			elif event.name.endswith('.py'):
				print event.name, 'changed, reloading...'
				do_reload(fd, server)
				return

def do_reload(fd, server):
	os.close(fd)
	server.stop()
	os.closerange(sys.stderr.fileno()+1, os.sysconf('SC_OPEN_MAX')) # close keep-alive client sockets
	os.execv(sys.argv[0], sys.argv)