prosody
54530085dffe
net/cqueues.lua

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net/cqueues.lua @ 11762:54530085dffe

net.server: Fall back to default backend from libevent instead of always select Fixes that selecting libevent when unavaibalbe would fall back to select instead of epoll, even if that's available. This way, we only have to update it in once place when choosing a new default.
author Kim Alvefur <zash@zash.se>
date Fri, 03 Sep 2021 17:35:34 +0200
parent 10999:37b884d675f7
child 12974:ba409c67353b
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d425fc41e59f net.cqueues: Add module that allows use of cqueues while still using net.server as main loop
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1 -- Prosody IM
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2 -- Copyright (C) 2014 Daurnimator
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3 --
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4 -- This project is MIT/X11 licensed. Please see the
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5 -- COPYING file in the source package for more information.
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6 --
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7 -- This module allows you to use cqueues with a net.server mainloop
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8 --
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9
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10 local server = require "net.server";
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11 local cqueues = require "cqueues";
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12 local timer = require "util.timer";
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13 assert(cqueues.VERSION >= 20150113, "cqueues newer than 20150113 required")
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15 -- Create a single top level cqueue
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16 local cq;
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17
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18 if server.cq then -- server provides cqueues object
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19 cq = server.cq;
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20 elseif server.watchfd then
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21 cq = cqueues.new();
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22 local timeout = timer.add_task(cq:timeout() or 0, function ()
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23 -- FIXME It should be enough to reschedule this timeout instead of replacing it, but this does not work. See https://issues.prosody.im/1572
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24 assert(cq:loop(0));
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25 return cq:timeout();
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26 end);
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27 server.watchfd(cq:pollfd(), function ()
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28 assert(cq:loop(0));
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29 local t = cq:timeout();
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30 if t then
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31 timer.stop(timeout);
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32 timeout = timer.add_task(cq:timeout(), function ()
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33 assert(cq:loop(0));
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34 return cq:timeout();
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35 end);
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36 end
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37 end);
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38 else
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39 error "NYI"
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40 end
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41
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42 return {
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43 cq = cq;
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44 }