Software / code / prosody
Annotate
net/resolvers/manual.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 | 8531:601681acea73 |
| child | 9691:e11e076f0eb8 |
| rev | line source |
|---|---|
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8531
601681acea73
net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
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1 local methods = {}; |
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601681acea73
net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
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2 local resolver_mt = { __index = methods }; |
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601681acea73
net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
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3 |
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601681acea73
net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
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4 -- Find the next target to connect to, and |
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601681acea73
net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
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5 -- pass it to cb() |
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601681acea73
net.connect: New API for outgoing connections, based on 'service resolvers'
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6 function methods:next(cb) |
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net.connect: New API for outgoing connections, based on 'service resolvers'
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7 if #self.targets == 0 then |
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601681acea73
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8 cb(nil); |
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9 return; |
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10 end |
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11 local next_target = table.remove(self.targets, 1); |
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12 cb(unpack(next_target, 1, 4)); |
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13 end |
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14 |
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15 local function new(targets, conn_type, extra) |
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16 return setmetatable({ |
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17 conn_type = conn_type; |
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18 extra = extra; |
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19 targets = targets or {}; |
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20 }, resolver_mt); |
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21 end |
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22 |
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23 return { |
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24 new = new; |
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25 }; |
