prosody
750ff9f579e2
util/gc.lua

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util/gc.lua @ 13575:750ff9f579e2

mod_c2s, mod_s2s: Support for queuing callbacks to run in session thread This allows certain session-specific code that needs to run in the async context, but is itself triggered outside of that context (e.g. timers), to be queued. An example of this is the session destruction code of mod_smacks, when the hibernation timeout is reached.
author Matthew Wild <mwild1@gmail.com>
date Thu, 21 Nov 2024 17:02:07 +0000
parent 12975:d10957394a3c
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12975
d10957394a3c util: Prefix module imports with prosody namespace
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1 local set = require "prosody.util.set";
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2
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3 local known_options = {
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4 incremental = set.new { "mode", "threshold", "speed", "step_size" };
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5 generational = set.new { "mode", "minor_threshold", "major_threshold" };
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6 };
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7
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4874b54af344 util.gc: Fix check for Lua 5.4
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8 if _VERSION ~= "Lua 5.4" then
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9 known_options.generational = nil;
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10 known_options.incremental:remove("step_size");
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11 end
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12
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13 local function configure(user, defaults)
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14 local mode = user.mode or defaults.mode or "incremental";
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15 if not known_options[mode] then
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16 return nil, "GC mode not supported on ".._VERSION..": "..mode;
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17 end
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18
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19 for k, v in pairs(user) do
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20 if not known_options[mode]:contains(k) then
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21 return nil, "Unknown GC parameter: "..k;
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22 elseif k ~= "mode" and type(v) ~= "number" then
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23 return nil, "parameter '"..k.."' should be a number";
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24 end
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25 end
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26
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27 if mode == "incremental" then
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28 if _VERSION == "Lua 5.4" then
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29 collectgarbage(mode,
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30 user.threshold or defaults.threshold,
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31 user.speed or defaults.speed,
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32 user.step_size or defaults.step_size
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33 );
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34 else
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35 collectgarbage("setpause", user.threshold or defaults.threshold);
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36 collectgarbage("setstepmul", user.speed or defaults.speed);
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37 end
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38 elseif mode == "generational" then
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39 collectgarbage(mode,
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40 user.minor_threshold or defaults.minor_threshold,
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41 user.major_threshold or defaults.major_threshold
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42 );
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43 end
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44 return true;
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45 end
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46
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47 return {
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48 configure = configure;
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49 };