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plugins/mod_watchregistrations.lua @ 12201:e5e0ab93d7f4 0.11
util.xml: Break reference to help the GC (fix #1711)
LuaExpat uses a registry reference to track handlers, which makes
it so that an upvalue like this creates a reference loop that keeps the
parser and its handlers from being garbage collected. The same issue has
affected util.xmppstream in the past.
Code for checking:
local xml_parse = require"util.xml".parse;
for i = 1, 10000 do xml_parse("<root/>") end
collectgarbage(); collectgarbage();
print(collectgarbage("count"), "KiB");
A future release of LuaExpat may fix the underlying issue there.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Thu, 20 Jan 2022 09:57:20 +0100 |
parent | 8812:3d7fceaff230 |
child | 12977:74b9e05af71e |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local host = module:get_host(); local jid_prep = require "util.jid".prep; local registration_watchers = module:get_option_set("registration_watchers", module:get_option("admins", {})) / jid_prep; local registration_from = module:get_option_string("registration_from", host); local registration_notification = module:get_option_string("registration_notification", "User $username just registered on $host from $ip"); local msg_type = module:get_option_string("registration_notification_type", "chat"); local st = require "util.stanza"; module:hook("user-registered", function (user) module:log("debug", "Notifying of new registration"); local message = st.message{ type = msg_type, from = registration_from } :tag("body") :text(registration_notification:gsub("%$(%w+)", function (v) return user[v] or user.session and user.session[v] or nil; end)) :up(); for jid in registration_watchers do module:log("debug", "Notifying %s", jid); message.attr.to = jid; module:send(message); end end);