prosody
494577d883ff
util/gc.lua

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util/gc.lua @ 12591:494577d883ff

util.table: Fix inaccurate comment Probably a duplicate of the comment next to Lmove, recorded by mistake Lpack can probably be removed at some point in the near future once we are confident it is not used anywhere.
author Kim Alvefur <zash@zash.se>
date Mon, 11 Jul 2022 20:02:10 +0200
parent 11431:4874b54af344
child 12975:d10957394a3c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 local set = require "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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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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2d57c49bfa12 util.gc: Linter fixes [luacheck]
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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 };