Ticket #159: autoreload.py

Line
1	# autoreloading launcher
2	# stolen a lot from Ian Bicking's WSGIKit (www.wsgikit.org)
3
4	import os
5	import sys
6	import time
7	import thread
8	from cherrypy import _cputil
9
10	RUN_RELOADER = True
11	reloadFiles = []
12
13	def reloader_thread():
14	mtimes = {}
15	while RUN_RELOADER:
16	for filename in filter(lambda v: v, map(lambda m: getattr(m, "__file__", None), sys.modules.values())) + reloadFiles:
17	if filename.endswith(".pyc"):
18	filename = filename[:-1]
19	mtime = os.stat(filename).st_mtime
20	if filename not in mtimes:
21	mtimes[filename] = mtime
22	continue
23	if mtime > mtimes[filename]:
24	sys.exit(3) # force reload
25	time.sleep(1)
26
27	def restart_with_reloader():
28	while True:
29	args = [sys.executable] + sys.argv
30	if sys.platform == "win32": args = ['"%s"' % arg for arg in args]
31	new_environ = os.environ.copy()
32	new_environ["RUN_MAIN"] = 'true'
33	exit_code = os.spawnve(os.P_WAIT, sys.executable,
34	args, new_environ)
35	if exit_code != 3:
36	return exit_code
37
38	def main(main_func):
39	if os.environ.get("RUN_MAIN") == "true":
40
41	thread.start_new_thread(main_func, ())
42
43	try:
44	reloader_thread()
45	except KeyboardInterrupt:
46	pass
47	else:
48	try:
49	sys.exit(restart_with_reloader())
50	except KeyboardInterrupt:
51	_cputil.getSpecialFunction('_cpLogMessage')("<Ctrl-C> hit: shutting down", "HTTP")
52