Mercurial > prosody-hg

annotate plugins/mod_debug_sql.lua @ 12201:e5e0ab93d7f4 0.11

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util.xml: Break reference to help the GC (fix #1711) LuaExpat uses a registry reference to track handlers, which makes it so that an upvalue like this creates a reference loop that keeps the parser and its handlers from being garbage collected. The same issue has affected util.xmppstream in the past. Code for checking: local xml_parse = require"util.xml".parse; for i = 1, 10000 do xml_parse("<root/>") end collectgarbage(); collectgarbage(); print(collectgarbage("count"), "KiB"); A future release of LuaExpat may fix the underlying issue there.
author Kim Alvefur <zash@zash.se>
date Thu, 20 Jan 2022 09:57:20 +0100
parents 5edb0d01a94f
children
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b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
Kim Alvefur <zash@zash.se>
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1 -- Enables SQL query logging
b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
Kim Alvefur <zash@zash.se>
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2 --
b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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3 -- luacheck: ignore 213/uri
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5edb0d01a94f mod_debug_sql: Declare itself as global module
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5 module:set_global();
5edb0d01a94f mod_debug_sql: Declare itself as global module
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b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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7 local engines = module:shared("/*/sql/connections");
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9 for uri, engine in pairs(engines) do
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10 engine:debug(true);
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11 end
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12
b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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13 setmetatable(engines, {
b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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14 __newindex = function (t, uri, engine)
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15 engine:debug(true);
b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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16 rawset(t, uri, engine);
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17 end
b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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18 });
b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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20 function module.unload()
b8bbd5f91ad9 mod_debug_sql: Small plugin that enables raw SQL query logging (for debugging)
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21 setmetatable(engines, nil);
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22 for uri, engine in pairs(engines) do
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23 engine:debug(false);
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24 end
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25 end
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