prosody
297b4cfcc3d9
util/gc.lua

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util/gc.lua @ 12943:297b4cfcc3d9

util.jsonschema: Ignore some new tests in test suite These seem to be using absolute URI references, Not Yet Implemented
author Kim Alvefur <zash@zash.se>
date Sat, 11 Mar 2023 12:01:17 +0100
parent 11431:4874b54af344
child 12975:d10957394a3c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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f59bc81245b3 util.gc: New module for configuring the Lua garbage collector
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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 };