Forgot to add

Author: minecraft server

plugins/long_operations.py

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+
+AUTHOR = "ekimekim"
+CONTACT = "[email protected]"
+DESCRIPTION = """This plugin allows for a function that takes a long time
+to do so in a way that will not cause a massive server lag.
+It does so with cooperative yields back to the main proxy.
+
+Usage:
+@long_operation
+def my_big_func():
+	yield
+	i = 0
+	for x in many_things:
+		do_something(x)
+		i += 1
+		if i >= 1000:
+			i = 0
+			yield
+
+This function will do_something with x 1000 times before allowing the proxy to continue.
+It will do so every tick until complete.
+
+The return value (as it appears to the outside function) is the first value yielded.
+It is good practice to (as above) yield the return value early on, even if not distinct from later yields.
+This is especially important as the function must always yield at least once.
+Later yield values are ignored.
+"""
+
+
+def on_start():
+	global running
+	running = []
+
+
+def on_tick(users):
+	global running
+	for fn in running[:]:
+		try:
+			next(fn)
+		except (Exception, StopIteration):
+			running.remove(fn)
+
+
+def long_operation(fn):
+	def _long_operation(*args, **kwargs):
+		global running
+		gen = fn(*args, **kwargs)
+		running.append(gen)
+		return next(gen)
+	return _long_operation