Software /
code /
prosody
File
plugins/muc/language.lib.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 | 9035:173c0e16e704 |
child | 10063:13ccc2f05007 |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- Copyright (C) 2014 Daurnimator -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local function get_language(room) return room._data.language; end local function set_language(room, language) if language == "" then language = nil; end if get_language(room) == language then return false; end room._data.language = language; return true; end local function add_disco_form(event) table.insert(event.form, { name = "muc#roominfo_lang"; value = ""; }); event.formdata["muc#roominfo_lang"] = get_language(event.room); end local function add_form_option(event) table.insert(event.form, { name = "muc#roomconfig_lang"; label = "Language tag for room (e.g. 'en', 'de', 'fr' etc.)"; type = "text-single"; desc = "Indicate the primary language spoken in this room"; value = get_language(event.room) or ""; }); end module:hook("muc-disco#info", add_disco_form); module:hook("muc-config-form", add_form_option, 100-3); module:hook("muc-config-submitted/muc#roomconfig_lang", function(event) if set_language(event.room, event.value) then event.status_codes["104"] = true; end end); return { get = get_language; set = set_language; };