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doc/roster_format.txt @ 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 | 132:9a4aa57af367 |
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This file documents the structure of the roster object. table roster { [string bare_jid] = roster_item } table roster_item { string subscription = "none" | "to" | "from" | "both" string name = Opaque string set by client. (optional) set groups = a set of opaque strings set by the client boolean ask = nil | "subscribe" - a value of true indicates subscription is pending } The roster is available as hosts[host].sessions[username].roster and a copy is made to session.roster for all sessions. All modifications to a roster should be done through the rostermanager.