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annotate util/gc.lua @ 13946:f5e8ab42c708

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mod_http_file_share: Check that files are still there with correct size Failed uploads can leave behind unused slots. Files shouldn't change size after they have been successfully uploaded, but might as well double check it.
author Kim Alvefur <zash@zash.se>
date Sat, 04 Dec 2021 18:56:51 +0100
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 };