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annotate util/gc.lua @ 14229:ce31fdde0ad1 default tip

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net.unbound: Simplify conditional
author Kim Alvefur <zash@zash.se>
date Sat, 13 Jun 2026 11:35:18 +0200
parents c9cc84bee17b
children
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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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8 if _VERSION == "Lua 5.5" then
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9 known_options.generational = set.new { "mode", "minor_multiplier", "minor_major_threshold", "major_minor_threshold" };
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10 elseif _VERSION ~= "Lua 5.4" then
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11 known_options.generational = nil;
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12 known_options.incremental:remove("step_size");
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13 end
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14
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15 local function configure(user, defaults)
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16 local mode = user.mode or defaults.mode or "incremental";
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17 if not known_options[mode] then
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18 return nil, "GC mode not supported on ".._VERSION..": "..mode;
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19 end
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20
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21 for k, v in pairs(user) do
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22 if not known_options[mode]:contains(k) then
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23 return nil, "Unknown GC parameter: "..k;
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24 elseif k ~= "mode" and type(v) ~= "number" then
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25 return nil, "parameter '"..k.."' should be a number";
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26 end
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27 end
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28
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29 if mode == "incremental" then
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30 if _VERSION == "Lua 5.4" then
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31 collectgarbage(mode,
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32 user.threshold or defaults.threshold,
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33 user.speed or defaults.speed,
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34 user.step_size or defaults.step_size
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35 );
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36 elseif _VERSION == "Lua 5.5" then
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37 collectgarbage(mode);
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38 collectgarbage("param", "pause", user.threshold or defaults.threshold);
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39 collectgarbage("param", "stepmul", user.speed or defaults.speed);
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40 collectgarbage("param", "stepsize", user.step_size or defaults.step_size);
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41 else
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42 collectgarbage("setpause", user.threshold or defaults.threshold);
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43 collectgarbage("setstepmul", user.speed or defaults.speed);
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44 end
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45 elseif mode == "generational" then
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46 if _VERSION == "Lua 5.4" then
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47 collectgarbage(mode,
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48 user.minor_threshold or defaults.minor_threshold,
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49 user.major_threshold or defaults.major_threshold
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50 );
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51 elseif _VERSION == "Lua 5.5" then
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52 collectgarbage(mode);
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53 collectgarbage("param", "minormul", user.minor_multiplier or defaults.minor_multiplier);
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54 collectgarbage("param", "majorminor", user.major_minor_threshold or defaults.major_minor_threshold);
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55 collectgarbage("param", "minormajor", user.minor_major_threshold or defaults.minor_major_threshold);
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56 end
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57 end
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58 return true;
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59 end
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60
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61 return {
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62 configure = configure;
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63 };